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-rw-r--r--arch/avr32/kernel/.gitignore1
-rw-r--r--arch/avr32/kernel/Makefile15
-rw-r--r--arch/avr32/kernel/asm-offsets.c24
-rw-r--r--arch/avr32/kernel/avr32_ksyms.c68
-rw-r--r--arch/avr32/kernel/cpu.c410
-rw-r--r--arch/avr32/kernel/entry-avr32b.S877
-rw-r--r--arch/avr32/kernel/head.S22
-rw-r--r--arch/avr32/kernel/irq.c28
-rw-r--r--arch/avr32/kernel/kprobes.c267
-rw-r--r--arch/avr32/kernel/module.c291
-rw-r--r--arch/avr32/kernel/nmi_debug.c83
-rw-r--r--arch/avr32/kernel/ocd.c167
-rw-r--r--arch/avr32/kernel/process.c358
-rw-r--r--arch/avr32/kernel/ptrace.c357
-rw-r--r--arch/avr32/kernel/setup.c609
-rw-r--r--arch/avr32/kernel/signal.c288
-rw-r--r--arch/avr32/kernel/stacktrace.c56
-rw-r--r--arch/avr32/kernel/switch_to.S35
-rw-r--r--arch/avr32/kernel/syscall-stubs.S153
-rw-r--r--arch/avr32/kernel/syscall_table.S347
-rw-r--r--arch/avr32/kernel/time.c161
-rw-r--r--arch/avr32/kernel/traps.c262
-rw-r--r--arch/avr32/kernel/vmlinux.lds.S89
23 files changed, 0 insertions, 4968 deletions
diff --git a/arch/avr32/kernel/.gitignore b/arch/avr32/kernel/.gitignore
deleted file mode 100644
index c5f676c3c224..000000000000
--- a/arch/avr32/kernel/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-vmlinux.lds
diff --git a/arch/avr32/kernel/Makefile b/arch/avr32/kernel/Makefile
deleted file mode 100644
index 119a2e41defe..000000000000
--- a/arch/avr32/kernel/Makefile
+++ /dev/null
@@ -1,15 +0,0 @@
-#
-# Makefile for the Linux/AVR32 kernel.
-#
-
-extra-y := head.o vmlinux.lds
-
-obj-$(CONFIG_SUBARCH_AVR32B) += entry-avr32b.o
-obj-y += syscall_table.o syscall-stubs.o irq.o
-obj-y += setup.o traps.o ocd.o ptrace.o
-obj-y += signal.o process.o time.o
-obj-y += switch_to.o cpu.o
-obj-$(CONFIG_MODULES) += module.o avr32_ksyms.o
-obj-$(CONFIG_KPROBES) += kprobes.o
-obj-$(CONFIG_STACKTRACE) += stacktrace.o
-obj-$(CONFIG_NMI_DEBUGGING) += nmi_debug.o
diff --git a/arch/avr32/kernel/asm-offsets.c b/arch/avr32/kernel/asm-offsets.c
deleted file mode 100644
index 2c9764fe3532..000000000000
--- a/arch/avr32/kernel/asm-offsets.c
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * Generate definitions needed by assembly language modules.
- * This code generates raw asm output which is post-processed
- * to extract and format the required data.
- */
-
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/thread_info.h>
-#include <linux/kbuild.h>
-
-void foo(void)
-{
- OFFSET(TI_task, thread_info, task);
- OFFSET(TI_flags, thread_info, flags);
- OFFSET(TI_cpu, thread_info, cpu);
- OFFSET(TI_preempt_count, thread_info, preempt_count);
- OFFSET(TI_rar_saved, thread_info, rar_saved);
- OFFSET(TI_rsr_saved, thread_info, rsr_saved);
- BLANK();
- OFFSET(TSK_active_mm, task_struct, active_mm);
- BLANK();
- OFFSET(MM_pgd, mm_struct, pgd);
-}
diff --git a/arch/avr32/kernel/avr32_ksyms.c b/arch/avr32/kernel/avr32_ksyms.c
deleted file mode 100644
index 0cdae8eb0220..000000000000
--- a/arch/avr32/kernel/avr32_ksyms.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * Export AVR32-specific functions for loadable modules.
- *
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/module.h>
-
-#include <asm/checksum.h>
-#include <linux/uaccess.h>
-
-/*
- * GCC functions
- */
-extern unsigned long long __avr32_lsl64(unsigned long long u, unsigned long b);
-extern unsigned long long __avr32_lsr64(unsigned long long u, unsigned long b);
-extern unsigned long long __avr32_asr64(unsigned long long u, unsigned long b);
-EXPORT_SYMBOL(__avr32_lsl64);
-EXPORT_SYMBOL(__avr32_lsr64);
-EXPORT_SYMBOL(__avr32_asr64);
-
-/*
- * String functions
- */
-EXPORT_SYMBOL(memset);
-EXPORT_SYMBOL(memcpy);
-
-EXPORT_SYMBOL(clear_page);
-EXPORT_SYMBOL(copy_page);
-
-/*
- * Userspace access stuff.
- */
-EXPORT_SYMBOL(__copy_user);
-EXPORT_SYMBOL(strncpy_from_user);
-EXPORT_SYMBOL(__strncpy_from_user);
-EXPORT_SYMBOL(clear_user);
-EXPORT_SYMBOL(__clear_user);
-EXPORT_SYMBOL(strnlen_user);
-
-EXPORT_SYMBOL(csum_partial);
-EXPORT_SYMBOL(csum_partial_copy_generic);
-
-/* Delay loops (lib/delay.S) */
-EXPORT_SYMBOL(__ndelay);
-EXPORT_SYMBOL(__udelay);
-EXPORT_SYMBOL(__const_udelay);
-
-/* Bit operations (lib/findbit.S) */
-EXPORT_SYMBOL(find_first_zero_bit);
-EXPORT_SYMBOL(find_next_zero_bit);
-EXPORT_SYMBOL(find_first_bit);
-EXPORT_SYMBOL(find_next_bit);
-EXPORT_SYMBOL(find_next_bit_le);
-EXPORT_SYMBOL(find_next_zero_bit_le);
-
-/* I/O primitives (lib/io-*.S) */
-EXPORT_SYMBOL(__raw_readsb);
-EXPORT_SYMBOL(__raw_readsw);
-EXPORT_SYMBOL(__raw_readsl);
-EXPORT_SYMBOL(__raw_writesb);
-EXPORT_SYMBOL(__raw_writesw);
-EXPORT_SYMBOL(__raw_writesl);
diff --git a/arch/avr32/kernel/cpu.c b/arch/avr32/kernel/cpu.c
deleted file mode 100644
index 0341ae27c9ec..000000000000
--- a/arch/avr32/kernel/cpu.c
+++ /dev/null
@@ -1,410 +0,0 @@
-/*
- * Copyright (C) 2005-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/init.h>
-#include <linux/device.h>
-#include <linux/seq_file.h>
-#include <linux/cpu.h>
-#include <linux/module.h>
-#include <linux/percpu.h>
-#include <linux/param.h>
-#include <linux/errno.h>
-#include <linux/clk.h>
-
-#include <asm/setup.h>
-#include <asm/sysreg.h>
-
-static DEFINE_PER_CPU(struct cpu, cpu_devices);
-
-#ifdef CONFIG_PERFORMANCE_COUNTERS
-
-/*
- * XXX: If/when a SMP-capable implementation of AVR32 will ever be
- * made, we must make sure that the code executes on the correct CPU.
- */
-static ssize_t show_pc0event(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- unsigned long pccr;
-
- pccr = sysreg_read(PCCR);
- return sprintf(buf, "0x%lx\n", (pccr >> 12) & 0x3f);
-}
-static ssize_t store_pc0event(struct device *dev,
- struct device_attribute *attr, const char *buf,
- size_t count)
-{
- unsigned long val;
- int ret;
-
- ret = kstrtoul(buf, 0, &val);
- if (ret)
- return ret;
- if (val > 0x3f)
- return -EINVAL;
- val = (val << 12) | (sysreg_read(PCCR) & 0xfffc0fff);
- sysreg_write(PCCR, val);
- return count;
-}
-static ssize_t show_pc0count(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- unsigned long pcnt0;
-
- pcnt0 = sysreg_read(PCNT0);
- return sprintf(buf, "%lu\n", pcnt0);
-}
-static ssize_t store_pc0count(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- unsigned long val;
- int ret;
-
- ret = kstrtoul(buf, 0, &val);
- if (ret)
- return ret;
- sysreg_write(PCNT0, val);
-
- return count;
-}
-
-static ssize_t show_pc1event(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- unsigned long pccr;
-
- pccr = sysreg_read(PCCR);
- return sprintf(buf, "0x%lx\n", (pccr >> 18) & 0x3f);
-}
-static ssize_t store_pc1event(struct device *dev,
- struct device_attribute *attr, const char *buf,
- size_t count)
-{
- unsigned long val;
- int ret;
-
- ret = kstrtoul(buf, 0, &val);
- if (ret)
- return ret;
- if (val > 0x3f)
- return -EINVAL;
- val = (val << 18) | (sysreg_read(PCCR) & 0xff03ffff);
- sysreg_write(PCCR, val);
- return count;
-}
-static ssize_t show_pc1count(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- unsigned long pcnt1;
-
- pcnt1 = sysreg_read(PCNT1);
- return sprintf(buf, "%lu\n", pcnt1);
-}
-static ssize_t store_pc1count(struct device *dev,
- struct device_attribute *attr, const char *buf,
- size_t count)
-{
- unsigned long val;
- int ret;
-
- ret = kstrtoul(buf, 0, &val);
- if (ret)
- return ret;
- sysreg_write(PCNT1, val);
-
- return count;
-}
-
-static ssize_t show_pccycles(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- unsigned long pccnt;
-
- pccnt = sysreg_read(PCCNT);
- return sprintf(buf, "%lu\n", pccnt);
-}
-static ssize_t store_pccycles(struct device *dev,
- struct device_attribute *attr, const char *buf,
- size_t count)
-{
- unsigned long val;
- int ret;
-
- ret = kstrtoul(buf, 0, &val);
- if (ret)
- return ret;
- sysreg_write(PCCNT, val);
-
- return count;
-}
-
-static ssize_t show_pcenable(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- unsigned long pccr;
-
- pccr = sysreg_read(PCCR);
- return sprintf(buf, "%c\n", (pccr & 1)?'1':'0');
-}
-static ssize_t store_pcenable(struct device *dev,
- struct device_attribute *attr, const char *buf,
- size_t count)
-{
- unsigned long pccr, val;
- int ret;
-
- ret = kstrtoul(buf, 0, &val);
- if (ret)
- return ret;
- if (val)
- val = 1;
-
- pccr = sysreg_read(PCCR);
- pccr = (pccr & ~1UL) | val;
- sysreg_write(PCCR, pccr);
-
- return count;
-}
-
-static DEVICE_ATTR(pc0event, 0600, show_pc0event, store_pc0event);
-static DEVICE_ATTR(pc0count, 0600, show_pc0count, store_pc0count);
-static DEVICE_ATTR(pc1event, 0600, show_pc1event, store_pc1event);
-static DEVICE_ATTR(pc1count, 0600, show_pc1count, store_pc1count);
-static DEVICE_ATTR(pccycles, 0600, show_pccycles, store_pccycles);
-static DEVICE_ATTR(pcenable, 0600, show_pcenable, store_pcenable);
-
-#endif /* CONFIG_PERFORMANCE_COUNTERS */
-
-static int __init topology_init(void)
-{
- int cpu;
-
- for_each_possible_cpu(cpu) {
- struct cpu *c = &per_cpu(cpu_devices, cpu);
-
- register_cpu(c, cpu);
-
-#ifdef CONFIG_PERFORMANCE_COUNTERS
- device_create_file(&c->dev, &dev_attr_pc0event);
- device_create_file(&c->dev, &dev_attr_pc0count);
- device_create_file(&c->dev, &dev_attr_pc1event);
- device_create_file(&c->dev, &dev_attr_pc1count);
- device_create_file(&c->dev, &dev_attr_pccycles);
- device_create_file(&c->dev, &dev_attr_pcenable);
-#endif
- }
-
- return 0;
-}
-
-subsys_initcall(topology_init);
-
-struct chip_id_map {
- u16 mid;
- u16 pn;
- const char *name;
-};
-
-static const struct chip_id_map chip_names[] = {
- { .mid = 0x1f, .pn = 0x1e82, .name = "AT32AP700x" },
-};
-#define NR_CHIP_NAMES ARRAY_SIZE(chip_names)
-
-static const char *cpu_names[] = {
- "Morgan",
- "AP7",
-};
-#define NR_CPU_NAMES ARRAY_SIZE(cpu_names)
-
-static const char *arch_names[] = {
- "AVR32A",
- "AVR32B",
-};
-#define NR_ARCH_NAMES ARRAY_SIZE(arch_names)
-
-static const char *mmu_types[] = {
- "No MMU",
- "ITLB and DTLB",
- "Shared TLB",
- "MPU"
-};
-
-static const char *cpu_feature_flags[] = {
- "rmw", "dsp", "simd", "ocd", "perfctr", "java", "fpu",
-};
-
-static const char *get_chip_name(struct avr32_cpuinfo *cpu)
-{
- unsigned int i;
- unsigned int mid = avr32_get_manufacturer_id(cpu);
- unsigned int pn = avr32_get_product_number(cpu);
-
- for (i = 0; i < NR_CHIP_NAMES; i++) {
- if (chip_names[i].mid == mid && chip_names[i].pn == pn)
- return chip_names[i].name;
- }
-
- return "(unknown)";
-}
-
-void __init setup_processor(void)
-{
- unsigned long config0, config1;
- unsigned long features;
- unsigned cpu_id, cpu_rev, arch_id, arch_rev, mmu_type;
- unsigned device_id;
- unsigned tmp;
- unsigned i;
-
- config0 = sysreg_read(CONFIG0);
- config1 = sysreg_read(CONFIG1);
- cpu_id = SYSREG_BFEXT(PROCESSORID, config0);
- cpu_rev = SYSREG_BFEXT(PROCESSORREVISION, config0);
- arch_id = SYSREG_BFEXT(AT, config0);
- arch_rev = SYSREG_BFEXT(AR, config0);
- mmu_type = SYSREG_BFEXT(MMUT, config0);
-
- device_id = ocd_read(DID);
-
- boot_cpu_data.arch_type = arch_id;
- boot_cpu_data.cpu_type = cpu_id;
- boot_cpu_data.arch_revision = arch_rev;
- boot_cpu_data.cpu_revision = cpu_rev;
- boot_cpu_data.tlb_config = mmu_type;
- boot_cpu_data.device_id = device_id;
-
- tmp = SYSREG_BFEXT(ILSZ, config1);
- if (tmp) {
- boot_cpu_data.icache.ways = 1 << SYSREG_BFEXT(IASS, config1);
- boot_cpu_data.icache.sets = 1 << SYSREG_BFEXT(ISET, config1);
- boot_cpu_data.icache.linesz = 1 << (tmp + 1);
- }
- tmp = SYSREG_BFEXT(DLSZ, config1);
- if (tmp) {
- boot_cpu_data.dcache.ways = 1 << SYSREG_BFEXT(DASS, config1);
- boot_cpu_data.dcache.sets = 1 << SYSREG_BFEXT(DSET, config1);
- boot_cpu_data.dcache.linesz = 1 << (tmp + 1);
- }
-
- if ((cpu_id >= NR_CPU_NAMES) || (arch_id >= NR_ARCH_NAMES)) {
- printk ("Unknown CPU configuration (ID %02x, arch %02x), "
- "continuing anyway...\n",
- cpu_id, arch_id);
- return;
- }
-
- printk ("CPU: %s chip revision %c\n", get_chip_name(&boot_cpu_data),
- avr32_get_chip_revision(&boot_cpu_data) + 'A');
- printk ("CPU: %s [%02x] core revision %d (%s arch revision %d)\n",
- cpu_names[cpu_id], cpu_id, cpu_rev,
- arch_names[arch_id], arch_rev);
- printk ("CPU: MMU configuration: %s\n", mmu_types[mmu_type]);
-
- printk ("CPU: features:");
- features = 0;
- if (config0 & SYSREG_BIT(CONFIG0_R))
- features |= AVR32_FEATURE_RMW;
- if (config0 & SYSREG_BIT(CONFIG0_D))
- features |= AVR32_FEATURE_DSP;
- if (config0 & SYSREG_BIT(CONFIG0_S))
- features |= AVR32_FEATURE_SIMD;
- if (config0 & SYSREG_BIT(CONFIG0_O))
- features |= AVR32_FEATURE_OCD;
- if (config0 & SYSREG_BIT(CONFIG0_P))
- features |= AVR32_FEATURE_PCTR;
- if (config0 & SYSREG_BIT(CONFIG0_J))
- features |= AVR32_FEATURE_JAVA;
- if (config0 & SYSREG_BIT(CONFIG0_F))
- features |= AVR32_FEATURE_FPU;
-
- for (i = 0; i < ARRAY_SIZE(cpu_feature_flags); i++)
- if (features & (1 << i))
- printk(" %s", cpu_feature_flags[i]);
-
- printk("\n");
- boot_cpu_data.features = features;
-}
-
-#ifdef CONFIG_PROC_FS
-static int c_show(struct seq_file *m, void *v)
-{
- unsigned int icache_size, dcache_size;
- unsigned int cpu = smp_processor_id();
- unsigned int freq;
- unsigned int i;
-
- icache_size = boot_cpu_data.icache.ways *
- boot_cpu_data.icache.sets *
- boot_cpu_data.icache.linesz;
- dcache_size = boot_cpu_data.dcache.ways *
- boot_cpu_data.dcache.sets *
- boot_cpu_data.dcache.linesz;
-
- seq_printf(m, "processor\t: %d\n", cpu);
-
- seq_printf(m, "chip type\t: %s revision %c\n",
- get_chip_name(&boot_cpu_data),
- avr32_get_chip_revision(&boot_cpu_data) + 'A');
- if (boot_cpu_data.arch_type < NR_ARCH_NAMES)
- seq_printf(m, "cpu arch\t: %s revision %d\n",
- arch_names[boot_cpu_data.arch_type],
- boot_cpu_data.arch_revision);
- if (boot_cpu_data.cpu_type < NR_CPU_NAMES)
- seq_printf(m, "cpu core\t: %s revision %d\n",
- cpu_names[boot_cpu_data.cpu_type],
- boot_cpu_data.cpu_revision);
-
- freq = (clk_get_rate(boot_cpu_data.clk) + 500) / 1000;
- seq_printf(m, "cpu MHz\t\t: %u.%03u\n", freq / 1000, freq % 1000);
-
- seq_printf(m, "i-cache\t\t: %dK (%u ways x %u sets x %u)\n",
- icache_size >> 10,
- boot_cpu_data.icache.ways,
- boot_cpu_data.icache.sets,
- boot_cpu_data.icache.linesz);
- seq_printf(m, "d-cache\t\t: %dK (%u ways x %u sets x %u)\n",
- dcache_size >> 10,
- boot_cpu_data.dcache.ways,
- boot_cpu_data.dcache.sets,
- boot_cpu_data.dcache.linesz);
-
- seq_printf(m, "features\t:");
- for (i = 0; i < ARRAY_SIZE(cpu_feature_flags); i++)
- if (boot_cpu_data.features & (1 << i))
- seq_printf(m, " %s", cpu_feature_flags[i]);
-
- seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
- boot_cpu_data.loops_per_jiffy / (500000/HZ),
- (boot_cpu_data.loops_per_jiffy / (5000/HZ)) % 100);
-
- return 0;
-}
-
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
- return *pos < 1 ? (void *)1 : NULL;
-}
-
-static void *c_next(struct seq_file *m, void *v, loff_t *pos)
-{
- ++*pos;
- return NULL;
-}
-
-static void c_stop(struct seq_file *m, void *v)
-{
-
-}
-
-const struct seq_operations cpuinfo_op = {
- .start = c_start,
- .next = c_next,
- .stop = c_stop,
- .show = c_show
-};
-#endif /* CONFIG_PROC_FS */
diff --git a/arch/avr32/kernel/entry-avr32b.S b/arch/avr32/kernel/entry-avr32b.S
deleted file mode 100644
index 7301f4806bbe..000000000000
--- a/arch/avr32/kernel/entry-avr32b.S
+++ /dev/null
@@ -1,877 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/*
- * This file contains the low-level entry-points into the kernel, that is,
- * exception handlers, debug trap handlers, interrupt handlers and the
- * system call handler.
- */
-#include <linux/errno.h>
-
-#include <asm/asm.h>
-#include <asm/hardirq.h>
-#include <asm/irq.h>
-#include <asm/ocd.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/ptrace.h>
-#include <asm/sysreg.h>
-#include <asm/thread_info.h>
-#include <asm/unistd.h>
-
-#ifdef CONFIG_PREEMPT
-# define preempt_stop mask_interrupts
-#else
-# define preempt_stop
-# define fault_resume_kernel fault_restore_all
-#endif
-
-#define __MASK(x) ((1 << (x)) - 1)
-#define IRQ_MASK ((__MASK(SOFTIRQ_BITS) << SOFTIRQ_SHIFT) | \
- (__MASK(HARDIRQ_BITS) << HARDIRQ_SHIFT))
-
- .section .ex.text,"ax",@progbits
- .align 2
-exception_vectors:
- bral handle_critical
- .align 2
- bral handle_critical
- .align 2
- bral do_bus_error_write
- .align 2
- bral do_bus_error_read
- .align 2
- bral do_nmi_ll
- .align 2
- bral handle_address_fault
- .align 2
- bral handle_protection_fault
- .align 2
- bral handle_debug
- .align 2
- bral do_illegal_opcode_ll
- .align 2
- bral do_illegal_opcode_ll
- .align 2
- bral do_illegal_opcode_ll
- .align 2
- bral do_fpe_ll
- .align 2
- bral do_illegal_opcode_ll
- .align 2
- bral handle_address_fault
- .align 2
- bral handle_address_fault
- .align 2
- bral handle_protection_fault
- .align 2
- bral handle_protection_fault
- .align 2
- bral do_dtlb_modified
-
-#define tlbmiss_save pushm r0-r3
-#define tlbmiss_restore popm r0-r3
-
- .org 0x50
- .global itlb_miss
-itlb_miss:
- tlbmiss_save
- rjmp tlb_miss_common
-
- .org 0x60
-dtlb_miss_read:
- tlbmiss_save
- rjmp tlb_miss_common
-
- .org 0x70
-dtlb_miss_write:
- tlbmiss_save
-
- .global tlb_miss_common
- .align 2
-tlb_miss_common:
- mfsr r0, SYSREG_TLBEAR
- mfsr r1, SYSREG_PTBR
-
- /*
- * First level lookup: The PGD contains virtual pointers to
- * the second-level page tables, but they may be NULL if not
- * present.
- */
-pgtbl_lookup:
- lsr r2, r0, PGDIR_SHIFT
- ld.w r3, r1[r2 << 2]
- bfextu r1, r0, PAGE_SHIFT, PGDIR_SHIFT - PAGE_SHIFT
- cp.w r3, 0
- breq page_table_not_present
-
- /* Second level lookup */
- ld.w r2, r3[r1 << 2]
- mfsr r0, SYSREG_TLBARLO
- bld r2, _PAGE_BIT_PRESENT
- brcc page_not_present
-
- /* Mark the page as accessed */
- sbr r2, _PAGE_BIT_ACCESSED
- st.w r3[r1 << 2], r2
-
- /* Drop software flags */
- andl r2, _PAGE_FLAGS_HARDWARE_MASK & 0xffff
- mtsr SYSREG_TLBELO, r2
-
- /* Figure out which entry we want to replace */
- mfsr r1, SYSREG_MMUCR
- clz r2, r0
- brcc 1f
- mov r3, -1 /* All entries have been accessed, */
- mov r2, 0 /* so start at 0 */
- mtsr SYSREG_TLBARLO, r3 /* and reset TLBAR */
-
-1: bfins r1, r2, SYSREG_DRP_OFFSET, SYSREG_DRP_SIZE
- mtsr SYSREG_MMUCR, r1
- tlbw
-
- tlbmiss_restore
- rete
-
- /* The slow path of the TLB miss handler */
- .align 2
-page_table_not_present:
- /* Do we need to synchronize with swapper_pg_dir? */
- bld r0, 31
- brcs sync_with_swapper_pg_dir
-
-page_not_present:
- tlbmiss_restore
- sub sp, 4
- stmts --sp, r0-lr
- call save_full_context_ex
- mfsr r12, SYSREG_ECR
- mov r11, sp
- call do_page_fault
- rjmp ret_from_exception
-
- .align 2
-sync_with_swapper_pg_dir:
- /*
- * If swapper_pg_dir contains a non-NULL second-level page
- * table pointer, copy it into the current PGD. If not, we
- * must handle it as a full-blown page fault.
- *
- * Jumping back to pgtbl_lookup causes an unnecessary lookup,
- * but it is guaranteed to be a cache hit, it won't happen
- * very often, and we absolutely do not want to sacrifice any
- * performance in the fast path in order to improve this.
- */
- mov r1, lo(swapper_pg_dir)
- orh r1, hi(swapper_pg_dir)
- ld.w r3, r1[r2 << 2]
- cp.w r3, 0
- breq page_not_present
- mfsr r1, SYSREG_PTBR
- st.w r1[r2 << 2], r3
- rjmp pgtbl_lookup
-
- /*
- * We currently have two bytes left at this point until we
- * crash into the system call handler...
- *
- * Don't worry, the assembler will let us know.
- */
-
-
- /* --- System Call --- */
-
- .org 0x100
-system_call:
-#ifdef CONFIG_PREEMPT
- mask_interrupts
-#endif
- pushm r12 /* r12_orig */
- stmts --sp, r0-lr
-
- mfsr r0, SYSREG_RAR_SUP
- mfsr r1, SYSREG_RSR_SUP
-#ifdef CONFIG_PREEMPT
- unmask_interrupts
-#endif
- zero_fp
- stm --sp, r0-r1
-
- /* check for syscall tracing */
- get_thread_info r0
- ld.w r1, r0[TI_flags]
- bld r1, TIF_SYSCALL_TRACE
- brcs syscall_trace_enter
-
-syscall_trace_cont:
- cp.w r8, NR_syscalls
- brhs syscall_badsys
-
- lddpc lr, syscall_table_addr
- ld.w lr, lr[r8 << 2]
- mov r8, r5 /* 5th argument (6th is pushed by stub) */
- icall lr
-
- .global syscall_return
-syscall_return:
- get_thread_info r0
- mask_interrupts /* make sure we don't miss an interrupt
- setting need_resched or sigpending
- between sampling and the rets */
-
- /* Store the return value so that the correct value is loaded below */
- stdsp sp[REG_R12], r12
-
- ld.w r1, r0[TI_flags]
- andl r1, _TIF_ALLWORK_MASK, COH
- brne syscall_exit_work
-
-syscall_exit_cont:
- popm r8-r9
- mtsr SYSREG_RAR_SUP, r8
- mtsr SYSREG_RSR_SUP, r9
- ldmts sp++, r0-lr
- sub sp, -4 /* r12_orig */
- rets
-
- .align 2
-syscall_table_addr:
- .long sys_call_table
-
-syscall_badsys:
- mov r12, -ENOSYS
- rjmp syscall_return
-
- .global ret_from_fork
-ret_from_fork:
- call schedule_tail
- mov r12, 0
- rjmp syscall_return
-
- .global ret_from_kernel_thread
-ret_from_kernel_thread:
- call schedule_tail
- mov r12, r0
- mov lr, r2 /* syscall_return */
- mov pc, r1
-
-syscall_trace_enter:
- pushm r8-r12
- call syscall_trace
- popm r8-r12
- rjmp syscall_trace_cont
-
-syscall_exit_work:
- bld r1, TIF_SYSCALL_TRACE
- brcc 1f
- unmask_interrupts
- call syscall_trace
- mask_interrupts
- ld.w r1, r0[TI_flags]
-
-1: bld r1, TIF_NEED_RESCHED
- brcc 2f
- unmask_interrupts
- call schedule
- mask_interrupts
- ld.w r1, r0[TI_flags]
- rjmp 1b
-
-2: mov r2, _TIF_SIGPENDING | _TIF_NOTIFY_RESUME
- tst r1, r2
- breq 3f
- unmask_interrupts
- mov r12, sp
- mov r11, r0
- call do_notify_resume
- mask_interrupts
- ld.w r1, r0[TI_flags]
- rjmp 1b
-
-3: bld r1, TIF_BREAKPOINT
- brcc syscall_exit_cont
- rjmp enter_monitor_mode
-
- /* This function expects to find offending PC in SYSREG_RAR_EX */
- .type save_full_context_ex, @function
- .align 2
-save_full_context_ex:
- mfsr r11, SYSREG_RAR_EX
- sub r9, pc, . - debug_trampoline
- mfsr r8, SYSREG_RSR_EX
- cp.w r9, r11
- breq 3f
- mov r12, r8
- andh r8, (MODE_MASK >> 16), COH
- brne 2f
-
-1: pushm r11, r12 /* PC and SR */
- unmask_exceptions
- ret r12
-
-2: sub r10, sp, -(FRAME_SIZE_FULL - REG_LR)
- stdsp sp[4], r10 /* replace saved SP */
- rjmp 1b
-
- /*
- * The debug handler set up a trampoline to make us
- * automatically enter monitor mode upon return, but since
- * we're saving the full context, we must assume that the
- * exception handler might want to alter the return address
- * and/or status register. So we need to restore the original
- * context and enter monitor mode manually after the exception
- * has been handled.
- */
-3: get_thread_info r8
- ld.w r11, r8[TI_rar_saved]
- ld.w r12, r8[TI_rsr_saved]
- rjmp 1b
- .size save_full_context_ex, . - save_full_context_ex
-
- /* Low-level exception handlers */
-handle_critical:
- /*
- * AT32AP700x errata:
- *
- * After a Java stack overflow or underflow trap, any CPU
- * memory access may cause erratic behavior. This will happen
- * when the four least significant bits of the JOSP system
- * register contains any value between 9 and 15 (inclusive).
- *
- * Possible workarounds:
- * - Don't use the Java Extension Module
- * - Ensure that the stack overflow and underflow trap
- * handlers do not do any memory access or trigger any
- * exceptions before the overflow/underflow condition is
- * cleared (by incrementing or decrementing the JOSP)
- * - Make sure that JOSP does not contain any problematic
- * value before doing any exception or interrupt
- * processing.
- * - Set up a critical exception handler which writes a
- * known-to-be-safe value, e.g. 4, to JOSP before doing
- * any further processing.
- *
- * We'll use the last workaround for now since we cannot
- * guarantee that user space processes don't use Java mode.
- * Non-well-behaving userland will be terminated with extreme
- * prejudice.
- */
-#ifdef CONFIG_CPU_AT32AP700X
- /*
- * There's a chance we can't touch memory, so temporarily
- * borrow PTBR to save the stack pointer while we fix things
- * up...
- */
- mtsr SYSREG_PTBR, sp
- mov sp, 4
- mtsr SYSREG_JOSP, sp
- mfsr sp, SYSREG_PTBR
- sub pc, -2
-
- /* Push most of pt_regs on stack. We'll do the rest later */
- sub sp, 4
- pushm r0-r12
-
- /* PTBR mirrors current_thread_info()->task->active_mm->pgd */
- get_thread_info r0
- ld.w r1, r0[TI_task]
- ld.w r2, r1[TSK_active_mm]
- ld.w r3, r2[MM_pgd]
- mtsr SYSREG_PTBR, r3
-#else
- sub sp, 4
- pushm r0-r12
-#endif
- sub r0, sp, -(14 * 4)
- mov r1, lr
- mfsr r2, SYSREG_RAR_EX
- mfsr r3, SYSREG_RSR_EX
- pushm r0-r3
-
- mfsr r12, SYSREG_ECR
- mov r11, sp
- call do_critical_exception
-
- /* We should never get here... */
-bad_return:
- sub r12, pc, (. - 1f)
- lddpc pc, 2f
- .align 2
-1: .asciz "Return from critical exception!"
-2: .long panic
-
- .align 1
-do_bus_error_write:
- sub sp, 4
- stmts --sp, r0-lr
- call save_full_context_ex
- mov r11, 1
- rjmp 1f
-
-do_bus_error_read:
- sub sp, 4
- stmts --sp, r0-lr
- call save_full_context_ex
- mov r11, 0
-1: mfsr r12, SYSREG_BEAR
- mov r10, sp
- call do_bus_error
- rjmp ret_from_exception
-
- .align 1
-do_nmi_ll:
- sub sp, 4
- stmts --sp, r0-lr
- mfsr r9, SYSREG_RSR_NMI
- mfsr r8, SYSREG_RAR_NMI
- bfextu r0, r9, MODE_SHIFT, 3
- brne 2f
-
-1: pushm r8, r9 /* PC and SR */
- mfsr r12, SYSREG_ECR
- mov r11, sp
- call do_nmi
- popm r8-r9
- mtsr SYSREG_RAR_NMI, r8
- tst r0, r0
- mtsr SYSREG_RSR_NMI, r9
- brne 3f
-
- ldmts sp++, r0-lr
- sub sp, -4 /* skip r12_orig */
- rete
-
-2: sub r10, sp, -(FRAME_SIZE_FULL - REG_LR)
- stdsp sp[4], r10 /* replace saved SP */
- rjmp 1b
-
-3: popm lr
- sub sp, -4 /* skip sp */
- popm r0-r12
- sub sp, -4 /* skip r12_orig */
- rete
-
-handle_address_fault:
- sub sp, 4
- stmts --sp, r0-lr
- call save_full_context_ex
- mfsr r12, SYSREG_ECR
- mov r11, sp
- call do_address_exception
- rjmp ret_from_exception
-
-handle_protection_fault:
- sub sp, 4
- stmts --sp, r0-lr
- call save_full_context_ex
- mfsr r12, SYSREG_ECR
- mov r11, sp
- call do_page_fault
- rjmp ret_from_exception
-
- .align 1
-do_illegal_opcode_ll:
- sub sp, 4
- stmts --sp, r0-lr
- call save_full_context_ex
- mfsr r12, SYSREG_ECR
- mov r11, sp
- call do_illegal_opcode
- rjmp ret_from_exception
-
-do_dtlb_modified:
- pushm r0-r3
- mfsr r1, SYSREG_TLBEAR
- mfsr r0, SYSREG_PTBR
- lsr r2, r1, PGDIR_SHIFT
- ld.w r0, r0[r2 << 2]
- lsl r1, (32 - PGDIR_SHIFT)
- lsr r1, (32 - PGDIR_SHIFT) + PAGE_SHIFT
-
- /* Translate to virtual address in P1 */
- andl r0, 0xf000
- sbr r0, 31
- add r2, r0, r1 << 2
- ld.w r3, r2[0]
- sbr r3, _PAGE_BIT_DIRTY
- mov r0, r3
- st.w r2[0], r3
-
- /* The page table is up-to-date. Update the TLB entry as well */
- andl r0, lo(_PAGE_FLAGS_HARDWARE_MASK)
- mtsr SYSREG_TLBELO, r0
-
- /* MMUCR[DRP] is updated automatically, so let's go... */
- tlbw
-
- popm r0-r3
- rete
-
-do_fpe_ll:
- sub sp, 4
- stmts --sp, r0-lr
- call save_full_context_ex
- unmask_interrupts
- mov r12, 26
- mov r11, sp
- call do_fpe
- rjmp ret_from_exception
-
-ret_from_exception:
- mask_interrupts
- lddsp r4, sp[REG_SR]
-
- andh r4, (MODE_MASK >> 16), COH
- brne fault_resume_kernel
-
- get_thread_info r0
- ld.w r1, r0[TI_flags]
- andl r1, _TIF_WORK_MASK, COH
- brne fault_exit_work
-
-fault_resume_user:
- popm r8-r9
- mask_exceptions
- mtsr SYSREG_RAR_EX, r8
- mtsr SYSREG_RSR_EX, r9
- ldmts sp++, r0-lr
- sub sp, -4
- rete
-
-fault_resume_kernel:
-#ifdef CONFIG_PREEMPT
- get_thread_info r0
- ld.w r2, r0[TI_preempt_count]
- cp.w r2, 0
- brne 1f
- ld.w r1, r0[TI_flags]
- bld r1, TIF_NEED_RESCHED
- brcc 1f
- lddsp r4, sp[REG_SR]
- bld r4, SYSREG_GM_OFFSET
- brcs 1f
- call preempt_schedule_irq
-1:
-#endif
-
- popm r8-r9
- mask_exceptions
- mfsr r1, SYSREG_SR
- mtsr SYSREG_RAR_EX, r8
- mtsr SYSREG_RSR_EX, r9
- popm lr
- sub sp, -4 /* ignore SP */
- popm r0-r12
- sub sp, -4 /* ignore r12_orig */
- rete
-
-irq_exit_work:
- /* Switch to exception mode so that we can share the same code. */
- mfsr r8, SYSREG_SR
- cbr r8, SYSREG_M0_OFFSET
- orh r8, hi(SYSREG_BIT(M1) | SYSREG_BIT(M2))
- mtsr SYSREG_SR, r8
- sub pc, -2
- get_thread_info r0
- ld.w r1, r0[TI_flags]
-
-fault_exit_work:
- bld r1, TIF_NEED_RESCHED
- brcc 1f
- unmask_interrupts
- call schedule
- mask_interrupts
- ld.w r1, r0[TI_flags]
- rjmp fault_exit_work
-
-1: mov r2, _TIF_SIGPENDING | _TIF_NOTIFY_RESUME
- tst r1, r2
- breq 2f
- unmask_interrupts
- mov r12, sp
- mov r11, r0
- call do_notify_resume
- mask_interrupts
- ld.w r1, r0[TI_flags]
- rjmp fault_exit_work
-
-2: bld r1, TIF_BREAKPOINT
- brcc fault_resume_user
- rjmp enter_monitor_mode
-
- .section .kprobes.text, "ax", @progbits
- .type handle_debug, @function
-handle_debug:
- sub sp, 4 /* r12_orig */
- stmts --sp, r0-lr
- mfsr r8, SYSREG_RAR_DBG
- mfsr r9, SYSREG_RSR_DBG
- unmask_exceptions
- pushm r8-r9
- bfextu r9, r9, SYSREG_MODE_OFFSET, SYSREG_MODE_SIZE
- brne debug_fixup_regs
-
-.Ldebug_fixup_cont:
-#ifdef CONFIG_TRACE_IRQFLAGS
- call trace_hardirqs_off
-#endif
- mov r12, sp
- call do_debug
- mov sp, r12
-
- lddsp r2, sp[REG_SR]
- bfextu r3, r2, SYSREG_MODE_OFFSET, SYSREG_MODE_SIZE
- brne debug_resume_kernel
-
- get_thread_info r0
- ld.w r1, r0[TI_flags]
- mov r2, _TIF_DBGWORK_MASK
- tst r1, r2
- brne debug_exit_work
-
- bld r1, TIF_SINGLE_STEP
- brcc 1f
- mfdr r4, OCD_DC
- sbr r4, OCD_DC_SS_BIT
- mtdr OCD_DC, r4
-
-1: popm r10,r11
- mask_exceptions
- mtsr SYSREG_RSR_DBG, r11
- mtsr SYSREG_RAR_DBG, r10
-#ifdef CONFIG_TRACE_IRQFLAGS
- call trace_hardirqs_on
-1:
-#endif
- ldmts sp++, r0-lr
- sub sp, -4
- retd
- .size handle_debug, . - handle_debug
-
- /* Mode of the trapped context is in r9 */
- .type debug_fixup_regs, @function
-debug_fixup_regs:
- mfsr r8, SYSREG_SR
- mov r10, r8
- bfins r8, r9, SYSREG_MODE_OFFSET, SYSREG_MODE_SIZE
- mtsr SYSREG_SR, r8
- sub pc, -2
- stdsp sp[REG_LR], lr
- mtsr SYSREG_SR, r10
- sub pc, -2
- sub r8, sp, -FRAME_SIZE_FULL
- stdsp sp[REG_SP], r8
- rjmp .Ldebug_fixup_cont
- .size debug_fixup_regs, . - debug_fixup_regs
-
- .type debug_resume_kernel, @function
-debug_resume_kernel:
- mask_exceptions
- popm r10, r11
- mtsr SYSREG_RAR_DBG, r10
- mtsr SYSREG_RSR_DBG, r11
-#ifdef CONFIG_TRACE_IRQFLAGS
- bld r11, SYSREG_GM_OFFSET
- brcc 1f
- call trace_hardirqs_on
-1:
-#endif
- mfsr r2, SYSREG_SR
- mov r1, r2
- bfins r2, r3, SYSREG_MODE_OFFSET, SYSREG_MODE_SIZE
- mtsr SYSREG_SR, r2
- sub pc, -2
- popm lr
- mtsr SYSREG_SR, r1
- sub pc, -2
- sub sp, -4 /* skip SP */
- popm r0-r12
- sub sp, -4
- retd
- .size debug_resume_kernel, . - debug_resume_kernel
-
- .type debug_exit_work, @function
-debug_exit_work:
- /*
- * We must return from Monitor Mode using a retd, and we must
- * not schedule since that involves the D bit in SR getting
- * cleared by something other than the debug hardware. This
- * may cause undefined behaviour according to the Architecture
- * manual.
- *
- * So we fix up the return address and status and return to a
- * stub below in Exception mode. From there, we can follow the
- * normal exception return path.
- *
- * The real return address and status registers are stored on
- * the stack in the way the exception return path understands,
- * so no need to fix anything up there.
- */
- sub r8, pc, . - fault_exit_work
- mtsr SYSREG_RAR_DBG, r8
- mov r9, 0
- orh r9, hi(SR_EM | SR_GM | MODE_EXCEPTION)
- mtsr SYSREG_RSR_DBG, r9
- sub pc, -2
- retd
- .size debug_exit_work, . - debug_exit_work
-
- .set rsr_int0, SYSREG_RSR_INT0
- .set rsr_int1, SYSREG_RSR_INT1
- .set rsr_int2, SYSREG_RSR_INT2
- .set rsr_int3, SYSREG_RSR_INT3
- .set rar_int0, SYSREG_RAR_INT0
- .set rar_int1, SYSREG_RAR_INT1
- .set rar_int2, SYSREG_RAR_INT2
- .set rar_int3, SYSREG_RAR_INT3
-
- .macro IRQ_LEVEL level
- .type irq_level\level, @function
-irq_level\level:
- sub sp, 4 /* r12_orig */
- stmts --sp,r0-lr
- mfsr r8, rar_int\level
- mfsr r9, rsr_int\level
-
-#ifdef CONFIG_PREEMPT
- sub r11, pc, (. - system_call)
- cp.w r11, r8
- breq 4f
-#endif
-
- pushm r8-r9
-
- mov r11, sp
- mov r12, \level
-
- call do_IRQ
-
- lddsp r4, sp[REG_SR]
- bfextu r4, r4, SYSREG_M0_OFFSET, 3
- cp.w r4, MODE_SUPERVISOR >> SYSREG_M0_OFFSET
- breq 2f
- cp.w r4, MODE_USER >> SYSREG_M0_OFFSET
-#ifdef CONFIG_PREEMPT
- brne 3f
-#else
- brne 1f
-#endif
-
- get_thread_info r0
- ld.w r1, r0[TI_flags]
- andl r1, _TIF_WORK_MASK, COH
- brne irq_exit_work
-
-1:
-#ifdef CONFIG_TRACE_IRQFLAGS
- call trace_hardirqs_on
-#endif
- popm r8-r9
- mtsr rar_int\level, r8
- mtsr rsr_int\level, r9
- ldmts sp++,r0-lr
- sub sp, -4 /* ignore r12_orig */
- rete
-
-#ifdef CONFIG_PREEMPT
-4: mask_interrupts
- mfsr r8, rsr_int\level
- sbr r8, 16
- mtsr rsr_int\level, r8
- ldmts sp++, r0-lr
- sub sp, -4 /* ignore r12_orig */
- rete
-#endif
-
-2: get_thread_info r0
- ld.w r1, r0[TI_flags]
- bld r1, TIF_CPU_GOING_TO_SLEEP
-#ifdef CONFIG_PREEMPT
- brcc 3f
-#else
- brcc 1b
-#endif
- sub r1, pc, . - cpu_idle_skip_sleep
- stdsp sp[REG_PC], r1
-#ifdef CONFIG_PREEMPT
-3: get_thread_info r0
- ld.w r2, r0[TI_preempt_count]
- cp.w r2, 0
- brne 1b
- ld.w r1, r0[TI_flags]
- bld r1, TIF_NEED_RESCHED
- brcc 1b
- lddsp r4, sp[REG_SR]
- bld r4, SYSREG_GM_OFFSET
- brcs 1b
- call preempt_schedule_irq
-#endif
- rjmp 1b
- .endm
-
- .section .irq.text,"ax",@progbits
-
- .global irq_level0
- .global irq_level1
- .global irq_level2
- .global irq_level3
- IRQ_LEVEL 0
- IRQ_LEVEL 1
- IRQ_LEVEL 2
- IRQ_LEVEL 3
-
- .section .kprobes.text, "ax", @progbits
- .type enter_monitor_mode, @function
-enter_monitor_mode:
- /*
- * We need to enter monitor mode to do a single step. The
- * monitor code will alter the return address so that we
- * return directly to the user instead of returning here.
- */
- breakpoint
- rjmp breakpoint_failed
-
- .size enter_monitor_mode, . - enter_monitor_mode
-
- .type debug_trampoline, @function
- .global debug_trampoline
-debug_trampoline:
- /*
- * Save the registers on the stack so that the monitor code
- * can find them easily.
- */
- sub sp, 4 /* r12_orig */
- stmts --sp, r0-lr
- get_thread_info r0
- ld.w r8, r0[TI_rar_saved]
- ld.w r9, r0[TI_rsr_saved]
- pushm r8-r9
-
- /*
- * The monitor code will alter the return address so we don't
- * return here.
- */
- breakpoint
- rjmp breakpoint_failed
- .size debug_trampoline, . - debug_trampoline
-
- .type breakpoint_failed, @function
-breakpoint_failed:
- /*
- * Something went wrong. Perhaps the debug hardware isn't
- * enabled?
- */
- lda.w r12, msg_breakpoint_failed
- mov r11, sp
- mov r10, 9 /* SIGKILL */
- call die
-1: rjmp 1b
-
-msg_breakpoint_failed:
- .asciz "Failed to enter Debug Mode"
diff --git a/arch/avr32/kernel/head.S b/arch/avr32/kernel/head.S
deleted file mode 100644
index 59eae6dfbed2..000000000000
--- a/arch/avr32/kernel/head.S
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Non-board-specific low-level startup code
- *
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/linkage.h>
-
-#include <asm/page.h>
-
- .section .init.text,"ax"
- .global kernel_entry
-kernel_entry:
- /* Start the show */
- lddpc pc, kernel_start_addr
-
- .align 2
-kernel_start_addr:
- .long start_kernel
diff --git a/arch/avr32/kernel/irq.c b/arch/avr32/kernel/irq.c
deleted file mode 100644
index 900e49b2258b..000000000000
--- a/arch/avr32/kernel/irq.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * Based on arch/i386/kernel/irq.c
- * Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/kernel_stat.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/device.h>
-
-/* May be overridden by platform code */
-int __weak nmi_enable(void)
-{
- return -ENOSYS;
-}
-
-void __weak nmi_disable(void)
-{
-
-}
diff --git a/arch/avr32/kernel/kprobes.c b/arch/avr32/kernel/kprobes.c
deleted file mode 100644
index a94ece4a72c8..000000000000
--- a/arch/avr32/kernel/kprobes.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/*
- * Kernel Probes (KProbes)
- *
- * Copyright (C) 2005-2006 Atmel Corporation
- *
- * Based on arch/ppc64/kernel/kprobes.c
- * Copyright (C) IBM Corporation, 2002, 2004
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/kprobes.h>
-#include <linux/ptrace.h>
-
-#include <asm/cacheflush.h>
-#include <linux/kdebug.h>
-#include <asm/ocd.h>
-
-DEFINE_PER_CPU(struct kprobe *, current_kprobe);
-static unsigned long kprobe_status;
-static struct pt_regs jprobe_saved_regs;
-
-struct kretprobe_blackpoint kretprobe_blacklist[] = {{NULL, NULL}};
-
-int __kprobes arch_prepare_kprobe(struct kprobe *p)
-{
- int ret = 0;
-
- if ((unsigned long)p->addr & 0x01) {
- printk("Attempt to register kprobe at an unaligned address\n");
- ret = -EINVAL;
- }
-
- /* XXX: Might be a good idea to check if p->addr is a valid
- * kernel address as well... */
-
- if (!ret) {
- pr_debug("copy kprobe at %p\n", p->addr);
- memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t));
- p->opcode = *p->addr;
- }
-
- return ret;
-}
-
-void __kprobes arch_arm_kprobe(struct kprobe *p)
-{
- pr_debug("arming kprobe at %p\n", p->addr);
- ocd_enable(NULL);
- *p->addr = BREAKPOINT_INSTRUCTION;
- flush_icache_range((unsigned long)p->addr,
- (unsigned long)p->addr + sizeof(kprobe_opcode_t));
-}
-
-void __kprobes arch_disarm_kprobe(struct kprobe *p)
-{
- pr_debug("disarming kprobe at %p\n", p->addr);
- ocd_disable(NULL);
- *p->addr = p->opcode;
- flush_icache_range((unsigned long)p->addr,
- (unsigned long)p->addr + sizeof(kprobe_opcode_t));
-}
-
-static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
-{
- unsigned long dc;
-
- pr_debug("preparing to singlestep over %p (PC=%08lx)\n",
- p->addr, regs->pc);
-
- BUG_ON(!(sysreg_read(SR) & SYSREG_BIT(SR_D)));
-
- dc = ocd_read(DC);
- dc |= 1 << OCD_DC_SS_BIT;
- ocd_write(DC, dc);
-
- /*
- * We must run the instruction from its original location
- * since it may actually reference PC.
- *
- * TODO: Do the instruction replacement directly in icache.
- */
- *p->addr = p->opcode;
- flush_icache_range((unsigned long)p->addr,
- (unsigned long)p->addr + sizeof(kprobe_opcode_t));
-}
-
-static void __kprobes resume_execution(struct kprobe *p, struct pt_regs *regs)
-{
- unsigned long dc;
-
- pr_debug("resuming execution at PC=%08lx\n", regs->pc);
-
- dc = ocd_read(DC);
- dc &= ~(1 << OCD_DC_SS_BIT);
- ocd_write(DC, dc);
-
- *p->addr = BREAKPOINT_INSTRUCTION;
- flush_icache_range((unsigned long)p->addr,
- (unsigned long)p->addr + sizeof(kprobe_opcode_t));
-}
-
-static void __kprobes set_current_kprobe(struct kprobe *p)
-{
- __this_cpu_write(current_kprobe, p);
-}
-
-static int __kprobes kprobe_handler(struct pt_regs *regs)
-{
- struct kprobe *p;
- void *addr = (void *)regs->pc;
- int ret = 0;
-
- pr_debug("kprobe_handler: kprobe_running=%p\n",
- kprobe_running());
-
- /*
- * We don't want to be preempted for the entire
- * duration of kprobe processing
- */
- preempt_disable();
-
- /* Check that we're not recursing */
- if (kprobe_running()) {
- p = get_kprobe(addr);
- if (p) {
- if (kprobe_status == KPROBE_HIT_SS) {
- printk("FIXME: kprobe hit while single-stepping!\n");
- goto no_kprobe;
- }
-
- printk("FIXME: kprobe hit while handling another kprobe\n");
- goto no_kprobe;
- } else {
- p = kprobe_running();
- if (p->break_handler && p->break_handler(p, regs))
- goto ss_probe;
- }
- /* If it's not ours, can't be delete race, (we hold lock). */
- goto no_kprobe;
- }
-
- p = get_kprobe(addr);
- if (!p)
- goto no_kprobe;
-
- kprobe_status = KPROBE_HIT_ACTIVE;
- set_current_kprobe(p);
- if (p->pre_handler && p->pre_handler(p, regs))
- /* handler has already set things up, so skip ss setup */
- return 1;
-
-ss_probe:
- prepare_singlestep(p, regs);
- kprobe_status = KPROBE_HIT_SS;
- return 1;
-
-no_kprobe:
- preempt_enable_no_resched();
- return ret;
-}
-
-static int __kprobes post_kprobe_handler(struct pt_regs *regs)
-{
- struct kprobe *cur = kprobe_running();
-
- pr_debug("post_kprobe_handler, cur=%p\n", cur);
-
- if (!cur)
- return 0;
-
- if (cur->post_handler) {
- kprobe_status = KPROBE_HIT_SSDONE;
- cur->post_handler(cur, regs, 0);
- }
-
- resume_execution(cur, regs);
- reset_current_kprobe();
- preempt_enable_no_resched();
-
- return 1;
-}
-
-int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
-{
- struct kprobe *cur = kprobe_running();
-
- pr_debug("kprobe_fault_handler: trapnr=%d\n", trapnr);
-
- if (cur->fault_handler && cur->fault_handler(cur, regs, trapnr))
- return 1;
-
- if (kprobe_status & KPROBE_HIT_SS) {
- resume_execution(cur, regs);
- preempt_enable_no_resched();
- }
- return 0;
-}
-
-/*
- * Wrapper routine to for handling exceptions.
- */
-int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
- unsigned long val, void *data)
-{
- struct die_args *args = (struct die_args *)data;
- int ret = NOTIFY_DONE;
-
- pr_debug("kprobe_exceptions_notify: val=%lu, data=%p\n",
- val, data);
-
- switch (val) {
- case DIE_BREAKPOINT:
- if (kprobe_handler(args->regs))
- ret = NOTIFY_STOP;
- break;
- case DIE_SSTEP:
- if (post_kprobe_handler(args->regs))
- ret = NOTIFY_STOP;
- break;
- default:
- break;
- }
-
- return ret;
-}
-
-int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
-{
- struct jprobe *jp = container_of(p, struct jprobe, kp);
-
- memcpy(&jprobe_saved_regs, regs, sizeof(struct pt_regs));
-
- /*
- * TODO: We should probably save some of the stack here as
- * well, since gcc may pass arguments on the stack for certain
- * functions (lots of arguments, large aggregates, varargs)
- */
-
- /* setup return addr to the jprobe handler routine */
- regs->pc = (unsigned long)jp->entry;
- return 1;
-}
-
-void __kprobes jprobe_return(void)
-{
- asm volatile("breakpoint" ::: "memory");
-}
-
-int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
-{
- /*
- * FIXME - we should ideally be validating that we got here 'cos
- * of the "trap" in jprobe_return() above, before restoring the
- * saved regs...
- */
- memcpy(regs, &jprobe_saved_regs, sizeof(struct pt_regs));
- return 1;
-}
-
-int __init arch_init_kprobes(void)
-{
- /* TODO: Register kretprobe trampoline */
- return 0;
-}
diff --git a/arch/avr32/kernel/module.c b/arch/avr32/kernel/module.c
deleted file mode 100644
index 2b4c54c04cb6..000000000000
--- a/arch/avr32/kernel/module.c
+++ /dev/null
@@ -1,291 +0,0 @@
-/*
- * AVR32-specific kernel module loader
- *
- * Copyright (C) 2005-2006 Atmel Corporation
- *
- * GOT initialization parts are based on the s390 version
- * Copyright (C) 2002, 2003 IBM Deutschland Entwicklung GmbH,
- * IBM Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/bug.h>
-#include <linux/elf.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/moduleloader.h>
-#include <linux/vmalloc.h>
-
-void module_arch_freeing_init(struct module *mod)
-{
- vfree(mod->arch.syminfo);
- mod->arch.syminfo = NULL;
-}
-
-static inline int check_rela(Elf32_Rela *rela, struct module *module,
- char *strings, Elf32_Sym *symbols)
-{
- struct mod_arch_syminfo *info;
-
- info = module->arch.syminfo + ELF32_R_SYM(rela->r_info);
- switch (ELF32_R_TYPE(rela->r_info)) {
- case R_AVR32_GOT32:
- case R_AVR32_GOT16:
- case R_AVR32_GOT8:
- case R_AVR32_GOT21S:
- case R_AVR32_GOT18SW: /* mcall */
- case R_AVR32_GOT16S: /* ld.w */
- if (rela->r_addend != 0) {
- printk(KERN_ERR
- "GOT relocation against %s at offset %u with addend\n",
- strings + symbols[ELF32_R_SYM(rela->r_info)].st_name,
- rela->r_offset);
- return -ENOEXEC;
- }
- if (info->got_offset == -1UL) {
- info->got_offset = module->arch.got_size;
- module->arch.got_size += sizeof(void *);
- }
- pr_debug("GOT[%3lu] %s\n", info->got_offset,
- strings + symbols[ELF32_R_SYM(rela->r_info)].st_name);
- break;
- }
-
- return 0;
-}
-
-int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
- char *secstrings, struct module *module)
-{
- Elf32_Shdr *symtab;
- Elf32_Sym *symbols;
- Elf32_Rela *rela;
- char *strings;
- int nrela, i, j;
- int ret;
-
- /* Find the symbol table */
- symtab = NULL;
- for (i = 0; i < hdr->e_shnum; i++)
- switch (sechdrs[i].sh_type) {
- case SHT_SYMTAB:
- symtab = &sechdrs[i];
- break;
- }
- if (!symtab) {
- printk(KERN_ERR "module %s: no symbol table\n", module->name);
- return -ENOEXEC;
- }
-
- /* Allocate room for one syminfo structure per symbol. */
- module->arch.nsyms = symtab->sh_size / sizeof(Elf_Sym);
- module->arch.syminfo = vmalloc(module->arch.nsyms
- * sizeof(struct mod_arch_syminfo));
- if (!module->arch.syminfo)
- return -ENOMEM;
-
- symbols = (void *)hdr + symtab->sh_offset;
- strings = (void *)hdr + sechdrs[symtab->sh_link].sh_offset;
- for (i = 0; i < module->arch.nsyms; i++) {
- if (symbols[i].st_shndx == SHN_UNDEF &&
- strcmp(strings + symbols[i].st_name,
- "_GLOBAL_OFFSET_TABLE_") == 0)
- /* "Define" it as absolute. */
- symbols[i].st_shndx = SHN_ABS;
- module->arch.syminfo[i].got_offset = -1UL;
- module->arch.syminfo[i].got_initialized = 0;
- }
-
- /* Allocate GOT entries for symbols that need it. */
- module->arch.got_size = 0;
- for (i = 0; i < hdr->e_shnum; i++) {
- if (sechdrs[i].sh_type != SHT_RELA)
- continue;
- nrela = sechdrs[i].sh_size / sizeof(Elf32_Rela);
- rela = (void *)hdr + sechdrs[i].sh_offset;
- for (j = 0; j < nrela; j++) {
- ret = check_rela(rela + j, module,
- strings, symbols);
- if (ret)
- goto out_free_syminfo;
- }
- }
-
- /*
- * Increase core size to make room for GOT and set start
- * offset for GOT.
- */
- module->core_layout.size = ALIGN(module->core_layout.size, 4);
- module->arch.got_offset = module->core_layout.size;
- module->core_layout.size += module->arch.got_size;
-
- return 0;
-
-out_free_syminfo:
- vfree(module->arch.syminfo);
- module->arch.syminfo = NULL;
-
- return ret;
-}
-
-static inline int reloc_overflow(struct module *module, const char *reloc_name,
- Elf32_Addr relocation)
-{
- printk(KERN_ERR "module %s: Value %lx does not fit relocation %s\n",
- module->name, (unsigned long)relocation, reloc_name);
- return -ENOEXEC;
-}
-
-#define get_u16(loc) (*((uint16_t *)loc))
-#define put_u16(loc, val) (*((uint16_t *)loc) = (val))
-
-int apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab,
- unsigned int symindex, unsigned int relindex,
- struct module *module)
-{
- Elf32_Shdr *symsec = sechdrs + symindex;
- Elf32_Shdr *relsec = sechdrs + relindex;
- Elf32_Shdr *dstsec = sechdrs + relsec->sh_info;
- Elf32_Rela *rel = (void *)relsec->sh_addr;
- unsigned int i;
- int ret = 0;
-
- for (i = 0; i < relsec->sh_size / sizeof(Elf32_Rela); i++, rel++) {
- struct mod_arch_syminfo *info;
- Elf32_Sym *sym;
- Elf32_Addr relocation;
- uint32_t *location;
- uint32_t value;
-
- location = (void *)dstsec->sh_addr + rel->r_offset;
- sym = (Elf32_Sym *)symsec->sh_addr + ELF32_R_SYM(rel->r_info);
- relocation = sym->st_value + rel->r_addend;
-
- info = module->arch.syminfo + ELF32_R_SYM(rel->r_info);
-
- /* Initialize GOT entry if necessary */
- switch (ELF32_R_TYPE(rel->r_info)) {
- case R_AVR32_GOT32:
- case R_AVR32_GOT16:
- case R_AVR32_GOT8:
- case R_AVR32_GOT21S:
- case R_AVR32_GOT18SW:
- case R_AVR32_GOT16S:
- if (!info->got_initialized) {
- Elf32_Addr *gotent;
-
- gotent = (module->core_layout.base
- + module->arch.got_offset
- + info->got_offset);
- *gotent = relocation;
- info->got_initialized = 1;
- }
-
- relocation = info->got_offset;
- break;
- }
-
- switch (ELF32_R_TYPE(rel->r_info)) {
- case R_AVR32_32:
- case R_AVR32_32_CPENT:
- *location = relocation;
- break;
- case R_AVR32_22H_PCREL:
- relocation -= (Elf32_Addr)location;
- if ((relocation & 0xffe00001) != 0
- && (relocation & 0xffc00001) != 0xffc00000)
- return reloc_overflow(module,
- "R_AVR32_22H_PCREL",
- relocation);
- relocation >>= 1;
-
- value = *location;
- value = ((value & 0xe1ef0000)
- | (relocation & 0xffff)
- | ((relocation & 0x10000) << 4)
- | ((relocation & 0x1e0000) << 8));
- *location = value;
- break;
- case R_AVR32_11H_PCREL:
- relocation -= (Elf32_Addr)location;
- if ((relocation & 0xfffffc01) != 0
- && (relocation & 0xfffff801) != 0xfffff800)
- return reloc_overflow(module,
- "R_AVR32_11H_PCREL",
- relocation);
- value = get_u16(location);
- value = ((value & 0xf00c)
- | ((relocation & 0x1fe) << 3)
- | ((relocation & 0x600) >> 9));
- put_u16(location, value);
- break;
- case R_AVR32_9H_PCREL:
- relocation -= (Elf32_Addr)location;
- if ((relocation & 0xffffff01) != 0
- && (relocation & 0xfffffe01) != 0xfffffe00)
- return reloc_overflow(module,
- "R_AVR32_9H_PCREL",
- relocation);
- value = get_u16(location);
- value = ((value & 0xf00f)
- | ((relocation & 0x1fe) << 3));
- put_u16(location, value);
- break;
- case R_AVR32_9UW_PCREL:
- relocation -= ((Elf32_Addr)location) & 0xfffffffc;
- if ((relocation & 0xfffffc03) != 0)
- return reloc_overflow(module,
- "R_AVR32_9UW_PCREL",
- relocation);
- value = get_u16(location);
- value = ((value & 0xf80f)
- | ((relocation & 0x1fc) << 2));
- put_u16(location, value);
- break;
- case R_AVR32_GOTPC:
- /*
- * R6 = PC - (PC - GOT)
- *
- * At this point, relocation contains the
- * value of PC. Just subtract the value of
- * GOT, and we're done.
- */
- pr_debug("GOTPC: PC=0x%x, got_offset=0x%lx, core=0x%p\n",
- relocation, module->arch.got_offset,
- module->core_layout.base);
- relocation -= ((unsigned long)module->core_layout.base
- + module->arch.got_offset);
- *location = relocation;
- break;
- case R_AVR32_GOT18SW:
- if ((relocation & 0xfffe0003) != 0
- && (relocation & 0xfffc0000) != 0xfffc0000)
- return reloc_overflow(module, "R_AVR32_GOT18SW",
- relocation);
- relocation >>= 2;
- /* fall through */
- case R_AVR32_GOT16S:
- if ((relocation & 0xffff8000) != 0
- && (relocation & 0xffff0000) != 0xffff0000)
- return reloc_overflow(module, "R_AVR32_GOT16S",
- relocation);
- pr_debug("GOT reloc @ 0x%x -> %u\n",
- rel->r_offset, relocation);
- value = *location;
- value = ((value & 0xffff0000)
- | (relocation & 0xffff));
- *location = value;
- break;
-
- default:
- printk(KERN_ERR "module %s: Unknown relocation: %u\n",
- module->name, ELF32_R_TYPE(rel->r_info));
- return -ENOEXEC;
- }
- }
-
- return ret;
-}
diff --git a/arch/avr32/kernel/nmi_debug.c b/arch/avr32/kernel/nmi_debug.c
deleted file mode 100644
index 25823049bb99..000000000000
--- a/arch/avr32/kernel/nmi_debug.c
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * Copyright (C) 2007 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/delay.h>
-#include <linux/kdebug.h>
-#include <linux/notifier.h>
-#include <linux/sched.h>
-#include <linux/sched/debug.h>
-
-#include <asm/irq.h>
-
-enum nmi_action {
- NMI_SHOW_STATE = 1 << 0,
- NMI_SHOW_REGS = 1 << 1,
- NMI_DIE = 1 << 2,
- NMI_DEBOUNCE = 1 << 3,
-};
-
-static unsigned long nmi_actions;
-
-static int nmi_debug_notify(struct notifier_block *self,
- unsigned long val, void *data)
-{
- struct die_args *args = data;
-
- if (likely(val != DIE_NMI))
- return NOTIFY_DONE;
-
- if (nmi_actions & NMI_SHOW_STATE)
- show_state();
- if (nmi_actions & NMI_SHOW_REGS)
- show_regs(args->regs);
- if (nmi_actions & NMI_DEBOUNCE)
- mdelay(10);
- if (nmi_actions & NMI_DIE)
- return NOTIFY_BAD;
-
- return NOTIFY_OK;
-}
-
-static struct notifier_block nmi_debug_nb = {
- .notifier_call = nmi_debug_notify,
-};
-
-static int __init nmi_debug_setup(char *str)
-{
- char *p, *sep;
-
- register_die_notifier(&nmi_debug_nb);
- if (nmi_enable()) {
- printk(KERN_WARNING "Unable to enable NMI.\n");
- return 0;
- }
-
- if (*str != '=')
- return 0;
-
- for (p = str + 1; *p; p = sep + 1) {
- sep = strchr(p, ',');
- if (sep)
- *sep = 0;
- if (strcmp(p, "state") == 0)
- nmi_actions |= NMI_SHOW_STATE;
- else if (strcmp(p, "regs") == 0)
- nmi_actions |= NMI_SHOW_REGS;
- else if (strcmp(p, "debounce") == 0)
- nmi_actions |= NMI_DEBOUNCE;
- else if (strcmp(p, "die") == 0)
- nmi_actions |= NMI_DIE;
- else
- printk(KERN_WARNING "NMI: Unrecognized action `%s'\n",
- p);
- if (!sep)
- break;
- }
-
- return 0;
-}
-__setup("nmi_debug", nmi_debug_setup);
diff --git a/arch/avr32/kernel/ocd.c b/arch/avr32/kernel/ocd.c
deleted file mode 100644
index 1b0245d4e0ca..000000000000
--- a/arch/avr32/kernel/ocd.c
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
- * Copyright (C) 2007 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/spinlock.h>
-
-#include <asm/ocd.h>
-
-static long ocd_count;
-static spinlock_t ocd_lock;
-
-/**
- * ocd_enable - enable on-chip debugging
- * @child: task to be debugged
- *
- * If @child is non-NULL, ocd_enable() first checks if debugging has
- * already been enabled for @child, and if it has, does nothing.
- *
- * If @child is NULL (e.g. when debugging the kernel), or debugging
- * has not already been enabled for it, ocd_enable() increments the
- * reference count and enables the debugging hardware.
- */
-void ocd_enable(struct task_struct *child)
-{
- u32 dc;
-
- if (child)
- pr_debug("ocd_enable: child=%s [%u]\n",
- child->comm, child->pid);
- else
- pr_debug("ocd_enable (no child)\n");
-
- if (!child || !test_and_set_tsk_thread_flag(child, TIF_DEBUG)) {
- spin_lock(&ocd_lock);
- ocd_count++;
- dc = ocd_read(DC);
- dc |= (1 << OCD_DC_MM_BIT) | (1 << OCD_DC_DBE_BIT);
- ocd_write(DC, dc);
- spin_unlock(&ocd_lock);
- }
-}
-
-/**
- * ocd_disable - disable on-chip debugging
- * @child: task that was being debugged, but isn't anymore
- *
- * If @child is non-NULL, ocd_disable() checks if debugging is enabled
- * for @child, and if it isn't, does nothing.
- *
- * If @child is NULL (e.g. when debugging the kernel), or debugging is
- * enabled, ocd_disable() decrements the reference count, and if it
- * reaches zero, disables the debugging hardware.
- */
-void ocd_disable(struct task_struct *child)
-{
- u32 dc;
-
- if (!child)
- pr_debug("ocd_disable (no child)\n");
- else if (test_tsk_thread_flag(child, TIF_DEBUG))
- pr_debug("ocd_disable: child=%s [%u]\n",
- child->comm, child->pid);
-
- if (!child || test_and_clear_tsk_thread_flag(child, TIF_DEBUG)) {
- spin_lock(&ocd_lock);
- ocd_count--;
-
- WARN_ON(ocd_count < 0);
-
- if (ocd_count <= 0) {
- dc = ocd_read(DC);
- dc &= ~((1 << OCD_DC_MM_BIT) | (1 << OCD_DC_DBE_BIT));
- ocd_write(DC, dc);
- }
- spin_unlock(&ocd_lock);
- }
-}
-
-#ifdef CONFIG_DEBUG_FS
-#include <linux/debugfs.h>
-#include <linux/module.h>
-
-static struct dentry *ocd_debugfs_root;
-static struct dentry *ocd_debugfs_DC;
-static struct dentry *ocd_debugfs_DS;
-static struct dentry *ocd_debugfs_count;
-
-static int ocd_DC_get(void *data, u64 *val)
-{
- *val = ocd_read(DC);
- return 0;
-}
-static int ocd_DC_set(void *data, u64 val)
-{
- ocd_write(DC, val);
- return 0;
-}
-DEFINE_SIMPLE_ATTRIBUTE(fops_DC, ocd_DC_get, ocd_DC_set, "0x%08llx\n");
-
-static int ocd_DS_get(void *data, u64 *val)
-{
- *val = ocd_read(DS);
- return 0;
-}
-DEFINE_SIMPLE_ATTRIBUTE(fops_DS, ocd_DS_get, NULL, "0x%08llx\n");
-
-static int ocd_count_get(void *data, u64 *val)
-{
- *val = ocd_count;
- return 0;
-}
-DEFINE_SIMPLE_ATTRIBUTE(fops_count, ocd_count_get, NULL, "%lld\n");
-
-static void ocd_debugfs_init(void)
-{
- struct dentry *root;
-
- root = debugfs_create_dir("ocd", NULL);
- if (IS_ERR(root) || !root)
- goto err_root;
- ocd_debugfs_root = root;
-
- ocd_debugfs_DC = debugfs_create_file("DC", S_IRUSR | S_IWUSR,
- root, NULL, &fops_DC);
- if (!ocd_debugfs_DC)
- goto err_DC;
-
- ocd_debugfs_DS = debugfs_create_file("DS", S_IRUSR, root,
- NULL, &fops_DS);
- if (!ocd_debugfs_DS)
- goto err_DS;
-
- ocd_debugfs_count = debugfs_create_file("count", S_IRUSR, root,
- NULL, &fops_count);
- if (!ocd_debugfs_count)
- goto err_count;
-
- return;
-
-err_count:
- debugfs_remove(ocd_debugfs_DS);
-err_DS:
- debugfs_remove(ocd_debugfs_DC);
-err_DC:
- debugfs_remove(ocd_debugfs_root);
-err_root:
- printk(KERN_WARNING "OCD: Failed to create debugfs entries\n");
-}
-#else
-static inline void ocd_debugfs_init(void)
-{
-
-}
-#endif
-
-static int __init ocd_init(void)
-{
- spin_lock_init(&ocd_lock);
- ocd_debugfs_init();
- return 0;
-}
-arch_initcall(ocd_init);
diff --git a/arch/avr32/kernel/process.c b/arch/avr32/kernel/process.c
deleted file mode 100644
index ad0dfccedb79..000000000000
--- a/arch/avr32/kernel/process.c
+++ /dev/null
@@ -1,358 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/sched.h>
-#include <linux/sched/debug.h>
-#include <linux/sched/task.h>
-#include <linux/sched/task_stack.h>
-#include <linux/module.h>
-#include <linux/kallsyms.h>
-#include <linux/fs.h>
-#include <linux/pm.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/reboot.h>
-#include <linux/tick.h>
-#include <linux/uaccess.h>
-#include <linux/unistd.h>
-
-#include <asm/sysreg.h>
-#include <asm/ocd.h>
-#include <asm/syscalls.h>
-
-#include <mach/pm.h>
-
-void (*pm_power_off)(void);
-EXPORT_SYMBOL(pm_power_off);
-
-/*
- * This file handles the architecture-dependent parts of process handling..
- */
-
-void arch_cpu_idle(void)
-{
- cpu_enter_idle();
-}
-
-void machine_halt(void)
-{
- /*
- * Enter Stop mode. The 32 kHz oscillator will keep running so
- * the RTC will keep the time properly and the system will
- * boot quickly.
- */
- asm volatile("sleep 3\n\t"
- "sub pc, -2");
-}
-
-void machine_power_off(void)
-{
- if (pm_power_off)
- pm_power_off();
-}
-
-void machine_restart(char *cmd)
-{
- ocd_write(DC, (1 << OCD_DC_DBE_BIT));
- ocd_write(DC, (1 << OCD_DC_RES_BIT));
- while (1) ;
-}
-
-/*
- * Free current thread data structures etc
- */
-void exit_thread(struct task_struct *tsk)
-{
- ocd_disable(tsk);
-}
-
-void flush_thread(void)
-{
- /* nothing to do */
-}
-
-void release_thread(struct task_struct *dead_task)
-{
- /* do nothing */
-}
-
-static void dump_mem(const char *str, const char *log_lvl,
- unsigned long bottom, unsigned long top)
-{
- unsigned long p;
- int i;
-
- printk("%s%s(0x%08lx to 0x%08lx)\n", log_lvl, str, bottom, top);
-
- for (p = bottom & ~31; p < top; ) {
- printk("%s%04lx: ", log_lvl, p & 0xffff);
-
- for (i = 0; i < 8; i++, p += 4) {
- unsigned int val;
-
- if (p < bottom || p >= top)
- printk(" ");
- else {
- if (__get_user(val, (unsigned int __user *)p)) {
- printk("\n");
- goto out;
- }
- printk("%08x ", val);
- }
- }
- printk("\n");
- }
-
-out:
- return;
-}
-
-static inline int valid_stack_ptr(struct thread_info *tinfo, unsigned long p)
-{
- return (p > (unsigned long)tinfo)
- && (p < (unsigned long)tinfo + THREAD_SIZE - 3);
-}
-
-#ifdef CONFIG_FRAME_POINTER
-static void show_trace_log_lvl(struct task_struct *tsk, unsigned long *sp,
- struct pt_regs *regs, const char *log_lvl)
-{
- unsigned long lr, fp;
- struct thread_info *tinfo;
-
- if (regs)
- fp = regs->r7;
- else if (tsk == current)
- asm("mov %0, r7" : "=r"(fp));
- else
- fp = tsk->thread.cpu_context.r7;
-
- /*
- * Walk the stack as long as the frame pointer (a) is within
- * the kernel stack of the task, and (b) it doesn't move
- * downwards.
- */
- tinfo = task_thread_info(tsk);
- printk("%sCall trace:\n", log_lvl);
- while (valid_stack_ptr(tinfo, fp)) {
- unsigned long new_fp;
-
- lr = *(unsigned long *)fp;
-#ifdef CONFIG_KALLSYMS
- printk("%s [<%08lx>] ", log_lvl, lr);
-#else
- printk(" [<%08lx>] ", lr);
-#endif
- print_symbol("%s\n", lr);
-
- new_fp = *(unsigned long *)(fp + 4);
- if (new_fp <= fp)
- break;
- fp = new_fp;
- }
- printk("\n");
-}
-#else
-static void show_trace_log_lvl(struct task_struct *tsk, unsigned long *sp,
- struct pt_regs *regs, const char *log_lvl)
-{
- unsigned long addr;
-
- printk("%sCall trace:\n", log_lvl);
-
- while (!kstack_end(sp)) {
- addr = *sp++;
- if (kernel_text_address(addr)) {
-#ifdef CONFIG_KALLSYMS
- printk("%s [<%08lx>] ", log_lvl, addr);
-#else
- printk(" [<%08lx>] ", addr);
-#endif
- print_symbol("%s\n", addr);
- }
- }
- printk("\n");
-}
-#endif
-
-void show_stack_log_lvl(struct task_struct *tsk, unsigned long sp,
- struct pt_regs *regs, const char *log_lvl)
-{
- struct thread_info *tinfo;
-
- if (sp == 0) {
- if (tsk)
- sp = tsk->thread.cpu_context.ksp;
- else
- sp = (unsigned long)&tinfo;
- }
- if (!tsk)
- tsk = current;
-
- tinfo = task_thread_info(tsk);
-
- if (valid_stack_ptr(tinfo, sp)) {
- dump_mem("Stack: ", log_lvl, sp,
- THREAD_SIZE + (unsigned long)tinfo);
- show_trace_log_lvl(tsk, (unsigned long *)sp, regs, log_lvl);
- }
-}
-
-void show_stack(struct task_struct *tsk, unsigned long *stack)
-{
- show_stack_log_lvl(tsk, (unsigned long)stack, NULL, "");
-}
-
-static const char *cpu_modes[] = {
- "Application", "Supervisor", "Interrupt level 0", "Interrupt level 1",
- "Interrupt level 2", "Interrupt level 3", "Exception", "NMI"
-};
-
-void show_regs_log_lvl(struct pt_regs *regs, const char *log_lvl)
-{
- unsigned long sp = regs->sp;
- unsigned long lr = regs->lr;
- unsigned long mode = (regs->sr & MODE_MASK) >> MODE_SHIFT;
-
- show_regs_print_info(log_lvl);
-
- if (!user_mode(regs)) {
- sp = (unsigned long)regs + FRAME_SIZE_FULL;
-
- printk("%s", log_lvl);
- print_symbol("PC is at %s\n", instruction_pointer(regs));
- printk("%s", log_lvl);
- print_symbol("LR is at %s\n", lr);
- }
-
- printk("%spc : [<%08lx>] lr : [<%08lx>] %s\n"
- "%ssp : %08lx r12: %08lx r11: %08lx\n",
- log_lvl, instruction_pointer(regs), lr, print_tainted(),
- log_lvl, sp, regs->r12, regs->r11);
- printk("%sr10: %08lx r9 : %08lx r8 : %08lx\n",
- log_lvl, regs->r10, regs->r9, regs->r8);
- printk("%sr7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
- log_lvl, regs->r7, regs->r6, regs->r5, regs->r4);
- printk("%sr3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
- log_lvl, regs->r3, regs->r2, regs->r1, regs->r0);
- printk("%sFlags: %c%c%c%c%c\n", log_lvl,
- regs->sr & SR_Q ? 'Q' : 'q',
- regs->sr & SR_V ? 'V' : 'v',
- regs->sr & SR_N ? 'N' : 'n',
- regs->sr & SR_Z ? 'Z' : 'z',
- regs->sr & SR_C ? 'C' : 'c');
- printk("%sMode bits: %c%c%c%c%c%c%c%c%c%c\n", log_lvl,
- regs->sr & SR_H ? 'H' : 'h',
- regs->sr & SR_J ? 'J' : 'j',
- regs->sr & SR_DM ? 'M' : 'm',
- regs->sr & SR_D ? 'D' : 'd',
- regs->sr & SR_EM ? 'E' : 'e',
- regs->sr & SR_I3M ? '3' : '.',
- regs->sr & SR_I2M ? '2' : '.',
- regs->sr & SR_I1M ? '1' : '.',
- regs->sr & SR_I0M ? '0' : '.',
- regs->sr & SR_GM ? 'G' : 'g');
- printk("%sCPU Mode: %s\n", log_lvl, cpu_modes[mode]);
-}
-
-void show_regs(struct pt_regs *regs)
-{
- unsigned long sp = regs->sp;
-
- if (!user_mode(regs))
- sp = (unsigned long)regs + FRAME_SIZE_FULL;
-
- show_regs_log_lvl(regs, "");
- show_trace_log_lvl(current, (unsigned long *)sp, regs, "");
-}
-EXPORT_SYMBOL(show_regs);
-
-/* Fill in the fpu structure for a core dump. This is easy -- we don't have any */
-int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
-{
- /* Not valid */
- return 0;
-}
-
-asmlinkage void ret_from_fork(void);
-asmlinkage void ret_from_kernel_thread(void);
-asmlinkage void syscall_return(void);
-
-int copy_thread(unsigned long clone_flags, unsigned long usp,
- unsigned long arg,
- struct task_struct *p)
-{
- struct pt_regs *childregs = task_pt_regs(p);
-
- if (unlikely(p->flags & PF_KTHREAD)) {
- memset(childregs, 0, sizeof(struct pt_regs));
- p->thread.cpu_context.r0 = arg;
- p->thread.cpu_context.r1 = usp; /* fn */
- p->thread.cpu_context.r2 = (unsigned long)syscall_return;
- p->thread.cpu_context.pc = (unsigned long)ret_from_kernel_thread;
- childregs->sr = MODE_SUPERVISOR;
- } else {
- *childregs = *current_pt_regs();
- if (usp)
- childregs->sp = usp;
- childregs->r12 = 0; /* Set return value for child */
- p->thread.cpu_context.pc = (unsigned long)ret_from_fork;
- }
-
- p->thread.cpu_context.sr = MODE_SUPERVISOR | SR_GM;
- p->thread.cpu_context.ksp = (unsigned long)childregs;
-
- clear_tsk_thread_flag(p, TIF_DEBUG);
- if ((clone_flags & CLONE_PTRACE) && test_thread_flag(TIF_DEBUG))
- ocd_enable(p);
-
- return 0;
-}
-
-/*
- * This function is supposed to answer the question "who called
- * schedule()?"
- */
-unsigned long get_wchan(struct task_struct *p)
-{
- unsigned long pc;
- unsigned long stack_page;
-
- if (!p || p == current || p->state == TASK_RUNNING)
- return 0;
-
- stack_page = (unsigned long)task_stack_page(p);
- BUG_ON(!stack_page);
-
- /*
- * The stored value of PC is either the address right after
- * the call to __switch_to() or ret_from_fork.
- */
- pc = thread_saved_pc(p);
- if (in_sched_functions(pc)) {
-#ifdef CONFIG_FRAME_POINTER
- unsigned long fp = p->thread.cpu_context.r7;
- BUG_ON(fp < stack_page || fp > (THREAD_SIZE + stack_page));
- pc = *(unsigned long *)fp;
-#else
- /*
- * We depend on the frame size of schedule here, which
- * is actually quite ugly. It might be possible to
- * determine the frame size automatically at build
- * time by doing this:
- * - compile sched/core.c
- * - disassemble the resulting sched.o
- * - look for 'sub sp,??' shortly after '<schedule>:'
- */
- unsigned long sp = p->thread.cpu_context.ksp + 16;
- BUG_ON(sp < stack_page || sp > (THREAD_SIZE + stack_page));
- pc = *(unsigned long *)sp;
-#endif
- }
-
- return pc;
-}
diff --git a/arch/avr32/kernel/ptrace.c b/arch/avr32/kernel/ptrace.c
deleted file mode 100644
index 41a14e96a1db..000000000000
--- a/arch/avr32/kernel/ptrace.c
+++ /dev/null
@@ -1,357 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#undef DEBUG
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/sched/task_stack.h>
-#include <linux/mm.h>
-#include <linux/ptrace.h>
-#include <linux/errno.h>
-#include <linux/user.h>
-#include <linux/security.h>
-#include <linux/unistd.h>
-#include <linux/notifier.h>
-
-#include <asm/traps.h>
-#include <linux/uaccess.h>
-#include <asm/ocd.h>
-#include <asm/mmu_context.h>
-#include <linux/kdebug.h>
-
-static struct pt_regs *get_user_regs(struct task_struct *tsk)
-{
- return (struct pt_regs *)((unsigned long)task_stack_page(tsk) +
- THREAD_SIZE - sizeof(struct pt_regs));
-}
-
-void user_enable_single_step(struct task_struct *tsk)
-{
- pr_debug("user_enable_single_step: pid=%u, PC=0x%08lx, SR=0x%08lx\n",
- tsk->pid, task_pt_regs(tsk)->pc, task_pt_regs(tsk)->sr);
-
- /*
- * We can't schedule in Debug mode, so when TIF_BREAKPOINT is
- * set, the system call or exception handler will do a
- * breakpoint to enter monitor mode before returning to
- * userspace.
- *
- * The monitor code will then notice that TIF_SINGLE_STEP is
- * set and return to userspace with single stepping enabled.
- * The CPU will then enter monitor mode again after exactly
- * one instruction has been executed, and the monitor code
- * will then send a SIGTRAP to the process.
- */
- set_tsk_thread_flag(tsk, TIF_BREAKPOINT);
- set_tsk_thread_flag(tsk, TIF_SINGLE_STEP);
-}
-
-void user_disable_single_step(struct task_struct *child)
-{
- /* XXX(hch): a no-op here seems wrong.. */
-}
-
-/*
- * Called by kernel/ptrace.c when detaching
- *
- * Make sure any single step bits, etc. are not set
- */
-void ptrace_disable(struct task_struct *child)
-{
- clear_tsk_thread_flag(child, TIF_SINGLE_STEP);
- clear_tsk_thread_flag(child, TIF_BREAKPOINT);
- ocd_disable(child);
-}
-
-/*
- * Read the word at offset "offset" into the task's "struct user". We
- * actually access the pt_regs struct stored on the kernel stack.
- */
-static int ptrace_read_user(struct task_struct *tsk, unsigned long offset,
- unsigned long __user *data)
-{
- unsigned long *regs;
- unsigned long value;
-
- if (offset & 3 || offset >= sizeof(struct user)) {
- printk("ptrace_read_user: invalid offset 0x%08lx\n", offset);
- return -EIO;
- }
-
- regs = (unsigned long *)get_user_regs(tsk);
-
- value = 0;
- if (offset < sizeof(struct pt_regs))
- value = regs[offset / sizeof(regs[0])];
-
- pr_debug("ptrace_read_user(%s[%u], %#lx, %p) -> %#lx\n",
- tsk->comm, tsk->pid, offset, data, value);
-
- return put_user(value, data);
-}
-
-/*
- * Write the word "value" to offset "offset" into the task's "struct
- * user". We actually access the pt_regs struct stored on the kernel
- * stack.
- */
-static int ptrace_write_user(struct task_struct *tsk, unsigned long offset,
- unsigned long value)
-{
- unsigned long *regs;
-
- pr_debug("ptrace_write_user(%s[%u], %#lx, %#lx)\n",
- tsk->comm, tsk->pid, offset, value);
-
- if (offset & 3 || offset >= sizeof(struct user)) {
- pr_debug(" invalid offset 0x%08lx\n", offset);
- return -EIO;
- }
-
- if (offset >= sizeof(struct pt_regs))
- return 0;
-
- regs = (unsigned long *)get_user_regs(tsk);
- regs[offset / sizeof(regs[0])] = value;
-
- return 0;
-}
-
-static int ptrace_getregs(struct task_struct *tsk, void __user *uregs)
-{
- struct pt_regs *regs = get_user_regs(tsk);
-
- return copy_to_user(uregs, regs, sizeof(*regs)) ? -EFAULT : 0;
-}
-
-static int ptrace_setregs(struct task_struct *tsk, const void __user *uregs)
-{
- struct pt_regs newregs;
- int ret;
-
- ret = -EFAULT;
- if (copy_from_user(&newregs, uregs, sizeof(newregs)) == 0) {
- struct pt_regs *regs = get_user_regs(tsk);
-
- ret = -EINVAL;
- if (valid_user_regs(&newregs)) {
- *regs = newregs;
- ret = 0;
- }
- }
-
- return ret;
-}
-
-long arch_ptrace(struct task_struct *child, long request,
- unsigned long addr, unsigned long data)
-{
- int ret;
- void __user *datap = (void __user *) data;
-
- switch (request) {
- /* Read the word at location addr in the child process */
- case PTRACE_PEEKTEXT:
- case PTRACE_PEEKDATA:
- ret = generic_ptrace_peekdata(child, addr, data);
- break;
-
- case PTRACE_PEEKUSR:
- ret = ptrace_read_user(child, addr, datap);
- break;
-
- /* Write the word in data at location addr */
- case PTRACE_POKETEXT:
- case PTRACE_POKEDATA:
- ret = generic_ptrace_pokedata(child, addr, data);
- break;
-
- case PTRACE_POKEUSR:
- ret = ptrace_write_user(child, addr, data);
- break;
-
- case PTRACE_GETREGS:
- ret = ptrace_getregs(child, datap);
- break;
-
- case PTRACE_SETREGS:
- ret = ptrace_setregs(child, datap);
- break;
-
- default:
- ret = ptrace_request(child, request, addr, data);
- break;
- }
-
- return ret;
-}
-
-asmlinkage void syscall_trace(void)
-{
- if (!test_thread_flag(TIF_SYSCALL_TRACE))
- return;
- if (!(current->ptrace & PT_PTRACED))
- return;
-
- /* The 0x80 provides a way for the tracing parent to
- * distinguish between a syscall stop and SIGTRAP delivery */
- ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
- ? 0x80 : 0));
-
- /*
- * this isn't the same as continuing with a signal, but it
- * will do for normal use. strace only continues with a
- * signal if the stopping signal is not SIGTRAP. -brl
- */
- if (current->exit_code) {
- pr_debug("syscall_trace: sending signal %d to PID %u\n",
- current->exit_code, current->pid);
- send_sig(current->exit_code, current, 1);
- current->exit_code = 0;
- }
-}
-
-/*
- * debug_trampoline() is an assembly stub which will store all user
- * registers on the stack and execute a breakpoint instruction.
- *
- * If we single-step into an exception handler which runs with
- * interrupts disabled the whole time so it doesn't have to check for
- * pending work, its return address will be modified so that it ends
- * up returning to debug_trampoline.
- *
- * If the exception handler decides to store the user context and
- * enable interrupts after all, it will restore the original return
- * address and status register value. Before it returns, it will
- * notice that TIF_BREAKPOINT is set and execute a breakpoint
- * instruction.
- */
-extern void debug_trampoline(void);
-
-asmlinkage struct pt_regs *do_debug(struct pt_regs *regs)
-{
- struct thread_info *ti;
- unsigned long trampoline_addr;
- u32 status;
- u32 ctrl;
- int code;
-
- status = ocd_read(DS);
- ti = current_thread_info();
- code = TRAP_BRKPT;
-
- pr_debug("do_debug: status=0x%08x PC=0x%08lx SR=0x%08lx tif=0x%08lx\n",
- status, regs->pc, regs->sr, ti->flags);
-
- if (!user_mode(regs)) {
- unsigned long die_val = DIE_BREAKPOINT;
-
- if (status & (1 << OCD_DS_SSS_BIT))
- die_val = DIE_SSTEP;
-
- if (notify_die(die_val, "ptrace", regs, 0, 0, SIGTRAP)
- == NOTIFY_STOP)
- return regs;
-
- if ((status & (1 << OCD_DS_SWB_BIT))
- && test_and_clear_ti_thread_flag(
- ti, TIF_BREAKPOINT)) {
- /*
- * Explicit breakpoint from trampoline or
- * exception/syscall/interrupt handler.
- *
- * The real saved regs are on the stack right
- * after the ones we saved on entry.
- */
- regs++;
- pr_debug(" -> TIF_BREAKPOINT done, adjusted regs:"
- "PC=0x%08lx SR=0x%08lx\n",
- regs->pc, regs->sr);
- BUG_ON(!user_mode(regs));
-
- if (test_thread_flag(TIF_SINGLE_STEP)) {
- pr_debug("Going to do single step...\n");
- return regs;
- }
-
- /*
- * No TIF_SINGLE_STEP means we're done
- * stepping over a syscall. Do the trap now.
- */
- code = TRAP_TRACE;
- } else if ((status & (1 << OCD_DS_SSS_BIT))
- && test_ti_thread_flag(ti, TIF_SINGLE_STEP)) {
-
- pr_debug("Stepped into something, "
- "setting TIF_BREAKPOINT...\n");
- set_ti_thread_flag(ti, TIF_BREAKPOINT);
-
- /*
- * We stepped into an exception, interrupt or
- * syscall handler. Some exception handlers
- * don't check for pending work, so we need to
- * set up a trampoline just in case.
- *
- * The exception entry code will undo the
- * trampoline stuff if it does a full context
- * save (which also means that it'll check for
- * pending work later.)
- */
- if ((regs->sr & MODE_MASK) == MODE_EXCEPTION) {
- trampoline_addr
- = (unsigned long)&debug_trampoline;
-
- pr_debug("Setting up trampoline...\n");
- ti->rar_saved = sysreg_read(RAR_EX);
- ti->rsr_saved = sysreg_read(RSR_EX);
- sysreg_write(RAR_EX, trampoline_addr);
- sysreg_write(RSR_EX, (MODE_EXCEPTION
- | SR_EM | SR_GM));
- BUG_ON(ti->rsr_saved & MODE_MASK);
- }
-
- /*
- * If we stepped into a system call, we
- * shouldn't do a single step after we return
- * since the return address is right after the
- * "scall" instruction we were told to step
- * over.
- */
- if ((regs->sr & MODE_MASK) == MODE_SUPERVISOR) {
- pr_debug("Supervisor; no single step\n");
- clear_ti_thread_flag(ti, TIF_SINGLE_STEP);
- }
-
- ctrl = ocd_read(DC);
- ctrl &= ~(1 << OCD_DC_SS_BIT);
- ocd_write(DC, ctrl);
-
- return regs;
- } else {
- printk(KERN_ERR "Unexpected OCD_DS value: 0x%08x\n",
- status);
- printk(KERN_ERR "Thread flags: 0x%08lx\n", ti->flags);
- die("Unhandled debug trap in kernel mode",
- regs, SIGTRAP);
- }
- } else if (status & (1 << OCD_DS_SSS_BIT)) {
- /* Single step in user mode */
- code = TRAP_TRACE;
-
- ctrl = ocd_read(DC);
- ctrl &= ~(1 << OCD_DC_SS_BIT);
- ocd_write(DC, ctrl);
- }
-
- pr_debug("Sending SIGTRAP: code=%d PC=0x%08lx SR=0x%08lx\n",
- code, regs->pc, regs->sr);
-
- clear_thread_flag(TIF_SINGLE_STEP);
- _exception(SIGTRAP, regs, code, instruction_pointer(regs));
-
- return regs;
-}
diff --git a/arch/avr32/kernel/setup.c b/arch/avr32/kernel/setup.c
deleted file mode 100644
index e6928896da2a..000000000000
--- a/arch/avr32/kernel/setup.c
+++ /dev/null
@@ -1,609 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/clk.h>
-#include <linux/init.h>
-#include <linux/initrd.h>
-#include <linux/sched.h>
-#include <linux/console.h>
-#include <linux/ioport.h>
-#include <linux/bootmem.h>
-#include <linux/fs.h>
-#include <linux/module.h>
-#include <linux/pfn.h>
-#include <linux/root_dev.h>
-#include <linux/cpu.h>
-#include <linux/kernel.h>
-
-#include <asm/sections.h>
-#include <asm/processor.h>
-#include <asm/pgtable.h>
-#include <asm/setup.h>
-#include <asm/sysreg.h>
-
-#include <mach/board.h>
-#include <mach/init.h>
-
-extern int root_mountflags;
-
-/*
- * Initialize loops_per_jiffy as 5000000 (500MIPS).
- * Better make it too large than too small...
- */
-struct avr32_cpuinfo boot_cpu_data = {
- .loops_per_jiffy = 5000000
-};
-EXPORT_SYMBOL(boot_cpu_data);
-
-static char __initdata command_line[COMMAND_LINE_SIZE];
-
-/*
- * Standard memory resources
- */
-static struct resource __initdata kernel_data = {
- .name = "Kernel data",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_SYSTEM_RAM,
-};
-static struct resource __initdata kernel_code = {
- .name = "Kernel code",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_SYSTEM_RAM,
- .sibling = &kernel_data,
-};
-
-/*
- * Available system RAM and reserved regions as singly linked
- * lists. These lists are traversed using the sibling pointer in
- * struct resource and are kept sorted at all times.
- */
-static struct resource *__initdata system_ram;
-static struct resource *__initdata reserved = &kernel_code;
-
-/*
- * We need to allocate these before the bootmem allocator is up and
- * running, so we need this "cache". 32 entries are probably enough
- * for all but the most insanely complex systems.
- */
-static struct resource __initdata res_cache[32];
-static unsigned int __initdata res_cache_next_free;
-
-static void __init resource_init(void)
-{
- struct resource *mem, *res;
- struct resource *new;
-
- kernel_code.start = __pa(init_mm.start_code);
-
- for (mem = system_ram; mem; mem = mem->sibling) {
- new = alloc_bootmem_low(sizeof(struct resource));
- memcpy(new, mem, sizeof(struct resource));
-
- new->sibling = NULL;
- if (request_resource(&iomem_resource, new))
- printk(KERN_WARNING "Bad RAM resource %08x-%08x\n",
- mem->start, mem->end);
- }
-
- for (res = reserved; res; res = res->sibling) {
- new = alloc_bootmem_low(sizeof(struct resource));
- memcpy(new, res, sizeof(struct resource));
-
- new->sibling = NULL;
- if (insert_resource(&iomem_resource, new))
- printk(KERN_WARNING
- "Bad reserved resource %s (%08x-%08x)\n",
- res->name, res->start, res->end);
- }
-}
-
-static void __init
-add_physical_memory(resource_size_t start, resource_size_t end)
-{
- struct resource *new, *next, **pprev;
-
- for (pprev = &system_ram, next = system_ram; next;
- pprev = &next->sibling, next = next->sibling) {
- if (end < next->start)
- break;
- if (start <= next->end) {
- printk(KERN_WARNING
- "Warning: Physical memory map is broken\n");
- printk(KERN_WARNING
- "Warning: %08x-%08x overlaps %08x-%08x\n",
- start, end, next->start, next->end);
- return;
- }
- }
-
- if (res_cache_next_free >= ARRAY_SIZE(res_cache)) {
- printk(KERN_WARNING
- "Warning: Failed to add physical memory %08x-%08x\n",
- start, end);
- return;
- }
-
- new = &res_cache[res_cache_next_free++];
- new->start = start;
- new->end = end;
- new->name = "System RAM";
- new->flags = IORESOURCE_SYSTEM_RAM;
-
- *pprev = new;
-}
-
-static int __init
-add_reserved_region(resource_size_t start, resource_size_t end,
- const char *name)
-{
- struct resource *new, *next, **pprev;
-
- if (end < start)
- return -EINVAL;
-
- if (res_cache_next_free >= ARRAY_SIZE(res_cache))
- return -ENOMEM;
-
- for (pprev = &reserved, next = reserved; next;
- pprev = &next->sibling, next = next->sibling) {
- if (end < next->start)
- break;
- if (start <= next->end)
- return -EBUSY;
- }
-
- new = &res_cache[res_cache_next_free++];
- new->start = start;
- new->end = end;
- new->name = name;
- new->sibling = next;
- new->flags = IORESOURCE_MEM;
-
- *pprev = new;
-
- return 0;
-}
-
-static unsigned long __init
-find_free_region(const struct resource *mem, resource_size_t size,
- resource_size_t align)
-{
- struct resource *res;
- unsigned long target;
-
- target = ALIGN(mem->start, align);
- for (res = reserved; res; res = res->sibling) {
- if ((target + size) <= res->start)
- break;
- if (target <= res->end)
- target = ALIGN(res->end + 1, align);
- }
-
- if ((target + size) > (mem->end + 1))
- return mem->end + 1;
-
- return target;
-}
-
-static int __init
-alloc_reserved_region(resource_size_t *start, resource_size_t size,
- resource_size_t align, const char *name)
-{
- struct resource *mem;
- resource_size_t target;
- int ret;
-
- for (mem = system_ram; mem; mem = mem->sibling) {
- target = find_free_region(mem, size, align);
- if (target <= mem->end) {
- ret = add_reserved_region(target, target + size - 1,
- name);
- if (!ret)
- *start = target;
- return ret;
- }
- }
-
- return -ENOMEM;
-}
-
-/*
- * Early framebuffer allocation. Works as follows:
- * - If fbmem_size is zero, nothing will be allocated or reserved.
- * - If fbmem_start is zero when setup_bootmem() is called,
- * a block of fbmem_size bytes will be reserved before bootmem
- * initialization. It will be aligned to the largest page size
- * that fbmem_size is a multiple of.
- * - If fbmem_start is nonzero, an area of size fbmem_size will be
- * reserved at the physical address fbmem_start if possible. If
- * it collides with other reserved memory, a different block of
- * same size will be allocated, just as if fbmem_start was zero.
- *
- * Board-specific code may use these variables to set up platform data
- * for the framebuffer driver if fbmem_size is nonzero.
- */
-resource_size_t __initdata fbmem_start;
-resource_size_t __initdata fbmem_size;
-
-/*
- * "fbmem=xxx[kKmM]" allocates the specified amount of boot memory for
- * use as framebuffer.
- *
- * "fbmem=xxx[kKmM]@yyy[kKmM]" defines a memory region of size xxx and
- * starting at yyy to be reserved for use as framebuffer.
- *
- * The kernel won't verify that the memory region starting at yyy
- * actually contains usable RAM.
- */
-static int __init early_parse_fbmem(char *p)
-{
- int ret;
- unsigned long align;
-
- fbmem_size = memparse(p, &p);
- if (*p == '@') {
- fbmem_start = memparse(p + 1, &p);
- ret = add_reserved_region(fbmem_start,
- fbmem_start + fbmem_size - 1,
- "Framebuffer");
- if (ret) {
- printk(KERN_WARNING
- "Failed to reserve framebuffer memory\n");
- fbmem_start = 0;
- }
- }
-
- if (!fbmem_start) {
- if ((fbmem_size & 0x000fffffUL) == 0)
- align = 0x100000; /* 1 MiB */
- else if ((fbmem_size & 0x0000ffffUL) == 0)
- align = 0x10000; /* 64 KiB */
- else
- align = 0x1000; /* 4 KiB */
-
- ret = alloc_reserved_region(&fbmem_start, fbmem_size,
- align, "Framebuffer");
- if (ret) {
- printk(KERN_WARNING
- "Failed to allocate framebuffer memory\n");
- fbmem_size = 0;
- } else {
- memset(__va(fbmem_start), 0, fbmem_size);
- }
- }
-
- return 0;
-}
-early_param("fbmem", early_parse_fbmem);
-
-/*
- * Pick out the memory size. We look for mem=size@start,
- * where start and size are "size[KkMmGg]"
- */
-static int __init early_mem(char *p)
-{
- resource_size_t size, start;
-
- start = system_ram->start;
- size = memparse(p, &p);
- if (*p == '@')
- start = memparse(p + 1, &p);
-
- system_ram->start = start;
- system_ram->end = system_ram->start + size - 1;
- return 0;
-}
-early_param("mem", early_mem);
-
-static int __init parse_tag_core(struct tag *tag)
-{
- if (tag->hdr.size > 2) {
- if ((tag->u.core.flags & 1) == 0)
- root_mountflags &= ~MS_RDONLY;
- ROOT_DEV = new_decode_dev(tag->u.core.rootdev);
- }
- return 0;
-}
-__tagtable(ATAG_CORE, parse_tag_core);
-
-static int __init parse_tag_mem(struct tag *tag)
-{
- unsigned long start, end;
-
- /*
- * Ignore zero-sized entries. If we're running standalone, the
- * SDRAM code may emit such entries if something goes
- * wrong...
- */
- if (tag->u.mem_range.size == 0)
- return 0;
-
- start = tag->u.mem_range.addr;
- end = tag->u.mem_range.addr + tag->u.mem_range.size - 1;
-
- add_physical_memory(start, end);
- return 0;
-}
-__tagtable(ATAG_MEM, parse_tag_mem);
-
-static int __init parse_tag_rdimg(struct tag *tag)
-{
-#ifdef CONFIG_BLK_DEV_INITRD
- struct tag_mem_range *mem = &tag->u.mem_range;
- int ret;
-
- if (initrd_start) {
- printk(KERN_WARNING
- "Warning: Only the first initrd image will be used\n");
- return 0;
- }
-
- ret = add_reserved_region(mem->addr, mem->addr + mem->size - 1,
- "initrd");
- if (ret) {
- printk(KERN_WARNING
- "Warning: Failed to reserve initrd memory\n");
- return ret;
- }
-
- initrd_start = (unsigned long)__va(mem->addr);
- initrd_end = initrd_start + mem->size;
-#else
- printk(KERN_WARNING "RAM disk image present, but "
- "no initrd support in kernel, ignoring\n");
-#endif
-
- return 0;
-}
-__tagtable(ATAG_RDIMG, parse_tag_rdimg);
-
-static int __init parse_tag_rsvd_mem(struct tag *tag)
-{
- struct tag_mem_range *mem = &tag->u.mem_range;
-
- return add_reserved_region(mem->addr, mem->addr + mem->size - 1,
- "Reserved");
-}
-__tagtable(ATAG_RSVD_MEM, parse_tag_rsvd_mem);
-
-static int __init parse_tag_cmdline(struct tag *tag)
-{
- strlcpy(boot_command_line, tag->u.cmdline.cmdline, COMMAND_LINE_SIZE);
- return 0;
-}
-__tagtable(ATAG_CMDLINE, parse_tag_cmdline);
-
-static int __init parse_tag_clock(struct tag *tag)
-{
- /*
- * We'll figure out the clocks by peeking at the system
- * manager regs directly.
- */
- return 0;
-}
-__tagtable(ATAG_CLOCK, parse_tag_clock);
-
-/*
- * The board_number correspond to the bd->bi_board_number in U-Boot. This
- * parameter is only available during initialisation and can be used in some
- * kind of board identification.
- */
-u32 __initdata board_number;
-
-static int __init parse_tag_boardinfo(struct tag *tag)
-{
- board_number = tag->u.boardinfo.board_number;
-
- return 0;
-}
-__tagtable(ATAG_BOARDINFO, parse_tag_boardinfo);
-
-/*
- * Scan the tag table for this tag, and call its parse function. The
- * tag table is built by the linker from all the __tagtable
- * declarations.
- */
-static int __init parse_tag(struct tag *tag)
-{
- extern struct tagtable __tagtable_begin, __tagtable_end;
- struct tagtable *t;
-
- for (t = &__tagtable_begin; t < &__tagtable_end; t++)
- if (tag->hdr.tag == t->tag) {
- t->parse(tag);
- break;
- }
-
- return t < &__tagtable_end;
-}
-
-/*
- * Parse all tags in the list we got from the boot loader
- */
-static void __init parse_tags(struct tag *t)
-{
- for (; t->hdr.tag != ATAG_NONE; t = tag_next(t))
- if (!parse_tag(t))
- printk(KERN_WARNING
- "Ignoring unrecognised tag 0x%08x\n",
- t->hdr.tag);
-}
-
-/*
- * Find a free memory region large enough for storing the
- * bootmem bitmap.
- */
-static unsigned long __init
-find_bootmap_pfn(const struct resource *mem)
-{
- unsigned long bootmap_pages, bootmap_len;
- unsigned long node_pages = PFN_UP(resource_size(mem));
- unsigned long bootmap_start;
-
- bootmap_pages = bootmem_bootmap_pages(node_pages);
- bootmap_len = bootmap_pages << PAGE_SHIFT;
-
- /*
- * Find a large enough region without reserved pages for
- * storing the bootmem bitmap. We can take advantage of the
- * fact that all lists have been sorted.
- *
- * We have to check that we don't collide with any reserved
- * regions, which includes the kernel image and any RAMDISK
- * images.
- */
- bootmap_start = find_free_region(mem, bootmap_len, PAGE_SIZE);
-
- return bootmap_start >> PAGE_SHIFT;
-}
-
-#define MAX_LOWMEM HIGHMEM_START
-#define MAX_LOWMEM_PFN PFN_DOWN(MAX_LOWMEM)
-
-static void __init setup_bootmem(void)
-{
- unsigned bootmap_size;
- unsigned long first_pfn, bootmap_pfn, pages;
- unsigned long max_pfn, max_low_pfn;
- unsigned node = 0;
- struct resource *res;
-
- printk(KERN_INFO "Physical memory:\n");
- for (res = system_ram; res; res = res->sibling)
- printk(" %08x-%08x\n", res->start, res->end);
- printk(KERN_INFO "Reserved memory:\n");
- for (res = reserved; res; res = res->sibling)
- printk(" %08x-%08x: %s\n",
- res->start, res->end, res->name);
-
- nodes_clear(node_online_map);
-
- if (system_ram->sibling)
- printk(KERN_WARNING "Only using first memory bank\n");
-
- for (res = system_ram; res; res = NULL) {
- first_pfn = PFN_UP(res->start);
- max_low_pfn = max_pfn = PFN_DOWN(res->end + 1);
- bootmap_pfn = find_bootmap_pfn(res);
- if (bootmap_pfn > max_pfn)
- panic("No space for bootmem bitmap!\n");
-
- if (max_low_pfn > MAX_LOWMEM_PFN) {
- max_low_pfn = MAX_LOWMEM_PFN;
-#ifndef CONFIG_HIGHMEM
- /*
- * Lowmem is memory that can be addressed
- * directly through P1/P2
- */
- printk(KERN_WARNING
- "Node %u: Only %ld MiB of memory will be used.\n",
- node, MAX_LOWMEM >> 20);
- printk(KERN_WARNING "Use a HIGHMEM enabled kernel.\n");
-#else
-#error HIGHMEM is not supported by AVR32 yet
-#endif
- }
-
- /* Initialize the boot-time allocator with low memory only. */
- bootmap_size = init_bootmem_node(NODE_DATA(node), bootmap_pfn,
- first_pfn, max_low_pfn);
-
- /*
- * Register fully available RAM pages with the bootmem
- * allocator.
- */
- pages = max_low_pfn - first_pfn;
- free_bootmem_node (NODE_DATA(node), PFN_PHYS(first_pfn),
- PFN_PHYS(pages));
-
- /* Reserve space for the bootmem bitmap... */
- reserve_bootmem_node(NODE_DATA(node),
- PFN_PHYS(bootmap_pfn),
- bootmap_size,
- BOOTMEM_DEFAULT);
-
- /* ...and any other reserved regions. */
- for (res = reserved; res; res = res->sibling) {
- if (res->start > PFN_PHYS(max_pfn))
- break;
-
- /*
- * resource_init will complain about partial
- * overlaps, so we'll just ignore such
- * resources for now.
- */
- if (res->start >= PFN_PHYS(first_pfn)
- && res->end < PFN_PHYS(max_pfn))
- reserve_bootmem_node(NODE_DATA(node),
- res->start,
- resource_size(res),
- BOOTMEM_DEFAULT);
- }
-
- node_set_online(node);
- }
-}
-
-void __init setup_arch (char **cmdline_p)
-{
- struct clk *cpu_clk;
-
- init_mm.start_code = (unsigned long)_stext;
- init_mm.end_code = (unsigned long)_etext;
- init_mm.end_data = (unsigned long)_edata;
- init_mm.brk = (unsigned long)_end;
-
- /*
- * Include .init section to make allocations easier. It will
- * be removed before the resource is actually requested.
- */
- kernel_code.start = __pa(__init_begin);
- kernel_code.end = __pa(init_mm.end_code - 1);
- kernel_data.start = __pa(init_mm.end_code);
- kernel_data.end = __pa(init_mm.brk - 1);
-
- parse_tags(bootloader_tags);
-
- setup_processor();
- setup_platform();
- setup_board();
-
- cpu_clk = clk_get(NULL, "cpu");
- if (IS_ERR(cpu_clk)) {
- printk(KERN_WARNING "Warning: Unable to get CPU clock\n");
- } else {
- unsigned long cpu_hz = clk_get_rate(cpu_clk);
-
- /*
- * Well, duh, but it's probably a good idea to
- * increment the use count.
- */
- clk_enable(cpu_clk);
-
- boot_cpu_data.clk = cpu_clk;
- boot_cpu_data.loops_per_jiffy = cpu_hz * 4;
- printk("CPU: Running at %lu.%03lu MHz\n",
- ((cpu_hz + 500) / 1000) / 1000,
- ((cpu_hz + 500) / 1000) % 1000);
- }
-
- strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
- *cmdline_p = command_line;
- parse_early_param();
-
- setup_bootmem();
-
-#ifdef CONFIG_VT
- conswitchp = &dummy_con;
-#endif
-
- paging_init();
- resource_init();
-}
diff --git a/arch/avr32/kernel/signal.c b/arch/avr32/kernel/signal.c
deleted file mode 100644
index b5fcc4914fe4..000000000000
--- a/arch/avr32/kernel/signal.c
+++ /dev/null
@@ -1,288 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * Based on linux/arch/sh/kernel/signal.c
- * Copyright (C) 1999, 2000 Niibe Yutaka & Kaz Kojima
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/errno.h>
-#include <linux/ptrace.h>
-#include <linux/unistd.h>
-#include <linux/tracehook.h>
-
-#include <linux/uaccess.h>
-#include <asm/ucontext.h>
-#include <asm/syscalls.h>
-
-struct rt_sigframe
-{
- struct siginfo info;
- struct ucontext uc;
- unsigned long retcode;
-};
-
-static int
-restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
-{
- int err = 0;
-
-#define COPY(x) err |= __get_user(regs->x, &sc->x)
- COPY(sr);
- COPY(pc);
- COPY(lr);
- COPY(sp);
- COPY(r12);
- COPY(r11);
- COPY(r10);
- COPY(r9);
- COPY(r8);
- COPY(r7);
- COPY(r6);
- COPY(r5);
- COPY(r4);
- COPY(r3);
- COPY(r2);
- COPY(r1);
- COPY(r0);
-#undef COPY
-
- /*
- * Don't allow anyone to pretend they're running in supervisor
- * mode or something...
- */
- err |= !valid_user_regs(regs);
-
- return err;
-}
-
-
-asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
-{
- struct rt_sigframe __user *frame;
- sigset_t set;
-
- /* Always make any pending restarted system calls return -EINTR */
- current->restart_block.fn = do_no_restart_syscall;
-
- frame = (struct rt_sigframe __user *)regs->sp;
- pr_debug("SIG return: frame = %p\n", frame);
-
- if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
- goto badframe;
-
- if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
- goto badframe;
-
- set_current_blocked(&set);
-
- if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
- goto badframe;
-
- if (restore_altstack(&frame->uc.uc_stack))
- goto badframe;
-
- pr_debug("Context restored: pc = %08lx, lr = %08lx, sp = %08lx\n",
- regs->pc, regs->lr, regs->sp);
-
- return regs->r12;
-
-badframe:
- force_sig(SIGSEGV, current);
- return 0;
-}
-
-static int
-setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs)
-{
- int err = 0;
-
-#define COPY(x) err |= __put_user(regs->x, &sc->x)
- COPY(sr);
- COPY(pc);
- COPY(lr);
- COPY(sp);
- COPY(r12);
- COPY(r11);
- COPY(r10);
- COPY(r9);
- COPY(r8);
- COPY(r7);
- COPY(r6);
- COPY(r5);
- COPY(r4);
- COPY(r3);
- COPY(r2);
- COPY(r1);
- COPY(r0);
-#undef COPY
-
- return err;
-}
-
-static inline void __user *
-get_sigframe(struct ksignal *ksig, struct pt_regs *regs, int framesize)
-{
- unsigned long sp = sigsp(regs->sp, ksig);
-
- return (void __user *)((sp - framesize) & ~3);
-}
-
-static int
-setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
-{
- struct rt_sigframe __user *frame;
- int err = 0;
-
- frame = get_sigframe(ksig, regs, sizeof(*frame));
- err = -EFAULT;
- if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
- goto out;
-
- /*
- * Set up the return code:
- *
- * mov r8, __NR_rt_sigreturn
- * scall
- *
- * Note: This will blow up since we're using a non-executable
- * stack. Better use SA_RESTORER.
- */
-#if __NR_rt_sigreturn > 127
-# error __NR_rt_sigreturn must be < 127 to fit in a short mov
-#endif
- err = __put_user(0x3008d733 | (__NR_rt_sigreturn << 20),
- &frame->retcode);
-
- err |= copy_siginfo_to_user(&frame->info, &ksig->info);
-
- /* Set up the ucontext */
- err |= __put_user(0, &frame->uc.uc_flags);
- err |= __put_user(NULL, &frame->uc.uc_link);
- err |= __save_altstack(&frame->uc.uc_stack, regs->sp);
- err |= setup_sigcontext(&frame->uc.uc_mcontext, regs);
- err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
-
- if (err)
- goto out;
-
- regs->r12 = ksig->sig;
- regs->r11 = (unsigned long) &frame->info;
- regs->r10 = (unsigned long) &frame->uc;
- regs->sp = (unsigned long) frame;
- if (ksig->ka.sa.sa_flags & SA_RESTORER)
- regs->lr = (unsigned long)ksig->ka.sa.sa_restorer;
- else {
- printk(KERN_NOTICE "[%s:%d] did not set SA_RESTORER\n",
- current->comm, current->pid);
- regs->lr = (unsigned long) &frame->retcode;
- }
-
- pr_debug("SIG deliver [%s:%d]: sig=%d sp=0x%lx pc=0x%lx->0x%p lr=0x%lx\n",
- current->comm, current->pid, ksig->sig, regs->sp,
- regs->pc, ksig->ka.sa.sa_handler, regs->lr);
-
- regs->pc = (unsigned long)ksig->ka.sa.sa_handler;
-
-out:
- return err;
-}
-
-static inline void setup_syscall_restart(struct pt_regs *regs)
-{
- if (regs->r12 == -ERESTART_RESTARTBLOCK)
- regs->r8 = __NR_restart_syscall;
- else
- regs->r12 = regs->r12_orig;
- regs->pc -= 2;
-}
-
-static inline void
-handle_signal(struct ksignal *ksig, struct pt_regs *regs, int syscall)
-{
- int ret;
-
- /*
- * Set up the stack frame
- */
- ret = setup_rt_frame(ksig, sigmask_to_save(), regs);
-
- /*
- * Check that the resulting registers are sane
- */
- ret |= !valid_user_regs(regs);
-
- /*
- * Block the signal if we were successful.
- */
- signal_setup_done(ret, ksig, 0);
-}
-
-/*
- * Note that 'init' is a special process: it doesn't get signals it
- * doesn't want to handle. Thus you cannot kill init even with a
- * SIGKILL even by mistake.
- */
-static void do_signal(struct pt_regs *regs, int syscall)
-{
- struct ksignal ksig;
-
- /*
- * We want the common case to go fast, which is why we may in
- * certain cases get here from kernel mode. Just return
- * without doing anything if so.
- */
- if (!user_mode(regs))
- return;
-
- get_signal(&ksig);
- if (syscall) {
- switch (regs->r12) {
- case -ERESTART_RESTARTBLOCK:
- case -ERESTARTNOHAND:
- if (ksig.sig > 0) {
- regs->r12 = -EINTR;
- break;
- }
- /* fall through */
- case -ERESTARTSYS:
- if (ksig.sig > 0 && !(ksig.ka.sa.sa_flags & SA_RESTART)) {
- regs->r12 = -EINTR;
- break;
- }
- /* fall through */
- case -ERESTARTNOINTR:
- setup_syscall_restart(regs);
- }
- }
-
- if (!ksig.sig) {
- /* No signal to deliver -- put the saved sigmask back */
- restore_saved_sigmask();
- return;
- }
-
- handle_signal(&ksig, regs, syscall);
-}
-
-asmlinkage void do_notify_resume(struct pt_regs *regs, struct thread_info *ti)
-{
- int syscall = 0;
-
- if ((sysreg_read(SR) & MODE_MASK) == MODE_SUPERVISOR)
- syscall = 1;
-
- if (ti->flags & _TIF_SIGPENDING)
- do_signal(regs, syscall);
-
- if (ti->flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
- tracehook_notify_resume(regs);
- }
-}
diff --git a/arch/avr32/kernel/stacktrace.c b/arch/avr32/kernel/stacktrace.c
deleted file mode 100644
index f8cc995cf0e0..000000000000
--- a/arch/avr32/kernel/stacktrace.c
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * Stack trace management functions
- *
- * Copyright (C) 2007 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/sched.h>
-#include <linux/sched/task_stack.h>
-#include <linux/stacktrace.h>
-#include <linux/thread_info.h>
-#include <linux/module.h>
-
-register unsigned long current_frame_pointer asm("r7");
-
-struct stackframe {
- unsigned long lr;
- unsigned long fp;
-};
-
-/*
- * Save stack-backtrace addresses into a stack_trace buffer.
- */
-void save_stack_trace(struct stack_trace *trace)
-{
- unsigned long low, high;
- unsigned long fp;
- struct stackframe *frame;
- int skip = trace->skip;
-
- low = (unsigned long)task_stack_page(current);
- high = low + THREAD_SIZE;
- fp = current_frame_pointer;
-
- while (fp >= low && fp <= (high - 8)) {
- frame = (struct stackframe *)fp;
-
- if (skip) {
- skip--;
- } else {
- trace->entries[trace->nr_entries++] = frame->lr;
- if (trace->nr_entries >= trace->max_entries)
- break;
- }
-
- /*
- * The next frame must be at a higher address than the
- * current frame.
- */
- low = fp + 8;
- fp = frame->fp;
- }
-}
-EXPORT_SYMBOL_GPL(save_stack_trace);
diff --git a/arch/avr32/kernel/switch_to.S b/arch/avr32/kernel/switch_to.S
deleted file mode 100644
index a48d046723c5..000000000000
--- a/arch/avr32/kernel/switch_to.S
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <asm/sysreg.h>
-
- .text
- .global __switch_to
- .type __switch_to, @function
-
- /* Switch thread context from "prev" to "next", returning "last"
- * r12 : prev
- * r11 : &prev->thread + 1
- * r10 : &next->thread
- */
-__switch_to:
- stm --r11, r0,r1,r2,r3,r4,r5,r6,r7,sp,lr
- mfsr r9, SYSREG_SR
- st.w --r11, r9
- ld.w r8, r10++
- /*
- * schedule() may have been called from a mode with a different
- * set of registers. Make sure we don't lose anything here.
- */
- pushm r10,r12
- mtsr SYSREG_SR, r8
- frs /* flush the return stack */
- sub pc, -2 /* flush the pipeline */
- popm r10,r12
- ldm r10++, r0,r1,r2,r3,r4,r5,r6,r7,sp,pc
- .size __switch_to, . - __switch_to
diff --git a/arch/avr32/kernel/syscall-stubs.S b/arch/avr32/kernel/syscall-stubs.S
deleted file mode 100644
index cb256534ed92..000000000000
--- a/arch/avr32/kernel/syscall-stubs.S
+++ /dev/null
@@ -1,153 +0,0 @@
-/*
- * Copyright (C) 2005-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/*
- * Stubs for syscalls that require access to pt_regs or that take more
- * than five parameters.
- */
-
-#define ARG6 r3
-
- .text
- .global __sys_rt_sigsuspend
- .type __sys_rt_sigsuspend,@function
-__sys_rt_sigsuspend:
- mov r10, sp
- rjmp sys_rt_sigsuspend
-
- .global __sys_rt_sigreturn
- .type __sys_rt_sigreturn,@function
-__sys_rt_sigreturn:
- mov r12, sp
- rjmp sys_rt_sigreturn
-
- .global __sys_mmap2
- .type __sys_mmap2,@function
-__sys_mmap2:
- pushm lr
- st.w --sp, ARG6
- call sys_mmap_pgoff
- sub sp, -4
- popm pc
-
- .global __sys_sendto
- .type __sys_sendto,@function
-__sys_sendto:
- pushm lr
- st.w --sp, ARG6
- call sys_sendto
- sub sp, -4
- popm pc
-
- .global __sys_recvfrom
- .type __sys_recvfrom,@function
-__sys_recvfrom:
- pushm lr
- st.w --sp, ARG6
- call sys_recvfrom
- sub sp, -4
- popm pc
-
- .global __sys_pselect6
- .type __sys_pselect6,@function
-__sys_pselect6:
- pushm lr
- st.w --sp, ARG6
- call sys_pselect6
- sub sp, -4
- popm pc
-
- .global __sys_splice
- .type __sys_splice,@function
-__sys_splice:
- pushm lr
- st.w --sp, ARG6
- call sys_splice
- sub sp, -4
- popm pc
-
- .global __sys_epoll_pwait
- .type __sys_epoll_pwait,@function
-__sys_epoll_pwait:
- pushm lr
- st.w --sp, ARG6
- call sys_epoll_pwait
- sub sp, -4
- popm pc
-
- .global __sys_sync_file_range
- .type __sys_sync_file_range,@function
-__sys_sync_file_range:
- pushm lr
- st.w --sp, ARG6
- call sys_sync_file_range
- sub sp, -4
- popm pc
-
- .global __sys_fallocate
- .type __sys_fallocate,@function
-__sys_fallocate:
- pushm lr
- st.w --sp, ARG6
- call sys_fallocate
- sub sp, -4
- popm pc
-
- .global __sys_fanotify_mark
- .type __sys_fanotify_mark,@function
-__sys_fanotify_mark:
- pushm lr
- st.w --sp, ARG6
- call sys_fanotify_mark
- sub sp, -4
- popm pc
-
- .global __sys_process_vm_readv
- .type __sys_process_vm_readv,@function
-__sys_process_vm_readv:
- pushm lr
- st.w --sp, ARG6
- call sys_process_vm_readv
- sub sp, -4
- popm pc
-
- .global __sys_process_vm_writev
- .type __sys_process_vm_writev,@function
-__sys_process_vm_writev:
- pushm lr
- st.w --sp, ARG6
- call sys_process_vm_writev
- sub sp, -4
- popm pc
-
- .global __sys_copy_file_range
- .type __sys_copy_file_range,@function
-__sys_copy_file_range:
- pushm lr
- st.w --sp, ARG6
- call sys_copy_file_range
- sub sp, -4
- popm pc
-
- .global __sys_preadv2
- .type __sys_preadv2,@function
-__sys_preadv2:
- pushm lr
- st.w --sp, ARG6
- call sys_preadv2
- sub sp, -4
- popm pc
-
- .global __sys_pwritev2
- .type __sys_pwritev2,@function
-__sys_pwritev2:
- pushm lr
- st.w --sp, ARG6
- call sys_pwritev2
- sub sp, -4
- popm pc
diff --git a/arch/avr32/kernel/syscall_table.S b/arch/avr32/kernel/syscall_table.S
deleted file mode 100644
index 774ce57f4948..000000000000
--- a/arch/avr32/kernel/syscall_table.S
+++ /dev/null
@@ -1,347 +0,0 @@
-/*
- * AVR32 system call table
- *
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
- .section .rodata,"a",@progbits
- .type sys_call_table,@object
- .global sys_call_table
- .align 2
-sys_call_table:
- .long sys_restart_syscall
- .long sys_exit
- .long sys_fork
- .long sys_read
- .long sys_write
- .long sys_open
- .long sys_close
- .long sys_umask
- .long sys_creat
- .long sys_link
- .long sys_unlink /* 10 */
- .long sys_execve
- .long sys_chdir
- .long sys_time
- .long sys_mknod
- .long sys_chmod
- .long sys_chown
- .long sys_lchown
- .long sys_lseek
- .long sys_llseek
- .long sys_getpid /* 20 */
- .long sys_mount
- .long sys_umount
- .long sys_setuid
- .long sys_getuid
- .long sys_stime
- .long sys_ptrace
- .long sys_alarm
- .long sys_pause
- .long sys_utime
- .long sys_newstat /* 30 */
- .long sys_newfstat
- .long sys_newlstat
- .long sys_access
- .long sys_chroot
- .long sys_sync
- .long sys_fsync
- .long sys_kill
- .long sys_rename
- .long sys_mkdir
- .long sys_rmdir /* 40 */
- .long sys_dup
- .long sys_pipe
- .long sys_times
- .long sys_clone
- .long sys_brk
- .long sys_setgid
- .long sys_getgid
- .long sys_getcwd
- .long sys_geteuid
- .long sys_getegid /* 50 */
- .long sys_acct
- .long sys_setfsuid
- .long sys_setfsgid
- .long sys_ioctl
- .long sys_fcntl
- .long sys_setpgid
- .long sys_mremap
- .long sys_setresuid
- .long sys_getresuid
- .long sys_setreuid /* 60 */
- .long sys_setregid
- .long sys_ustat
- .long sys_dup2
- .long sys_getppid
- .long sys_getpgrp
- .long sys_setsid
- .long sys_rt_sigaction
- .long __sys_rt_sigreturn
- .long sys_rt_sigprocmask
- .long sys_rt_sigpending /* 70 */
- .long sys_rt_sigtimedwait
- .long sys_rt_sigqueueinfo
- .long __sys_rt_sigsuspend
- .long sys_sethostname
- .long sys_setrlimit
- .long sys_getrlimit
- .long sys_getrusage
- .long sys_gettimeofday
- .long sys_settimeofday
- .long sys_getgroups /* 80 */
- .long sys_setgroups
- .long sys_select
- .long sys_symlink
- .long sys_fchdir
- .long sys_readlink
- .long sys_pread64
- .long sys_pwrite64
- .long sys_swapon
- .long sys_reboot
- .long __sys_mmap2 /* 90 */
- .long sys_munmap
- .long sys_truncate
- .long sys_ftruncate
- .long sys_fchmod
- .long sys_fchown
- .long sys_getpriority
- .long sys_setpriority
- .long sys_wait4
- .long sys_statfs
- .long sys_fstatfs /* 100 */
- .long sys_vhangup
- .long sys_sigaltstack
- .long sys_syslog
- .long sys_setitimer
- .long sys_getitimer
- .long sys_swapoff
- .long sys_sysinfo
- .long sys_ni_syscall /* was sys_ipc briefly */
- .long sys_sendfile
- .long sys_setdomainname /* 110 */
- .long sys_newuname
- .long sys_adjtimex
- .long sys_mprotect
- .long sys_vfork
- .long sys_init_module
- .long sys_delete_module
- .long sys_quotactl
- .long sys_getpgid
- .long sys_bdflush
- .long sys_sysfs /* 120 */
- .long sys_personality
- .long sys_ni_syscall /* reserved for afs_syscall */
- .long sys_getdents
- .long sys_flock
- .long sys_msync
- .long sys_readv
- .long sys_writev
- .long sys_getsid
- .long sys_fdatasync
- .long sys_sysctl /* 130 */
- .long sys_mlock
- .long sys_munlock
- .long sys_mlockall
- .long sys_munlockall
- .long sys_sched_setparam
- .long sys_sched_getparam
- .long sys_sched_setscheduler
- .long sys_sched_getscheduler
- .long sys_sched_yield
- .long sys_sched_get_priority_max /* 140 */
- .long sys_sched_get_priority_min
- .long sys_sched_rr_get_interval
- .long sys_nanosleep
- .long sys_poll
- .long sys_ni_syscall /* 145 was nfsservctl */
- .long sys_setresgid
- .long sys_getresgid
- .long sys_prctl
- .long sys_socket
- .long sys_bind /* 150 */
- .long sys_connect
- .long sys_listen
- .long sys_accept
- .long sys_getsockname
- .long sys_getpeername
- .long sys_socketpair
- .long sys_send
- .long sys_recv
- .long __sys_sendto
- .long __sys_recvfrom /* 160 */
- .long sys_shutdown
- .long sys_setsockopt
- .long sys_getsockopt
- .long sys_sendmsg
- .long sys_recvmsg
- .long sys_truncate64
- .long sys_ftruncate64
- .long sys_stat64
- .long sys_lstat64
- .long sys_fstat64 /* 170 */
- .long sys_pivot_root
- .long sys_mincore
- .long sys_madvise
- .long sys_getdents64
- .long sys_fcntl64
- .long sys_gettid
- .long sys_readahead
- .long sys_setxattr
- .long sys_lsetxattr
- .long sys_fsetxattr /* 180 */
- .long sys_getxattr
- .long sys_lgetxattr
- .long sys_fgetxattr
- .long sys_listxattr
- .long sys_llistxattr
- .long sys_flistxattr
- .long sys_removexattr
- .long sys_lremovexattr
- .long sys_fremovexattr
- .long sys_tkill /* 190 */
- .long sys_sendfile64
- .long sys_futex
- .long sys_sched_setaffinity
- .long sys_sched_getaffinity
- .long sys_capget
- .long sys_capset
- .long sys_io_setup
- .long sys_io_destroy
- .long sys_io_getevents
- .long sys_io_submit /* 200 */
- .long sys_io_cancel
- .long sys_fadvise64
- .long sys_exit_group
- .long sys_lookup_dcookie
- .long sys_epoll_create
- .long sys_epoll_ctl
- .long sys_epoll_wait
- .long sys_remap_file_pages
- .long sys_set_tid_address
- .long sys_timer_create /* 210 */
- .long sys_timer_settime
- .long sys_timer_gettime
- .long sys_timer_getoverrun
- .long sys_timer_delete
- .long sys_clock_settime
- .long sys_clock_gettime
- .long sys_clock_getres
- .long sys_clock_nanosleep
- .long sys_statfs64
- .long sys_fstatfs64 /* 220 */
- .long sys_tgkill
- .long sys_ni_syscall /* reserved for TUX */
- .long sys_utimes
- .long sys_fadvise64_64
- .long sys_cacheflush
- .long sys_ni_syscall /* sys_vserver */
- .long sys_mq_open
- .long sys_mq_unlink
- .long sys_mq_timedsend
- .long sys_mq_timedreceive /* 230 */
- .long sys_mq_notify
- .long sys_mq_getsetattr
- .long sys_kexec_load
- .long sys_waitid
- .long sys_add_key
- .long sys_request_key
- .long sys_keyctl
- .long sys_ioprio_set
- .long sys_ioprio_get
- .long sys_inotify_init /* 240 */
- .long sys_inotify_add_watch
- .long sys_inotify_rm_watch
- .long sys_openat
- .long sys_mkdirat
- .long sys_mknodat
- .long sys_fchownat
- .long sys_futimesat
- .long sys_fstatat64
- .long sys_unlinkat
- .long sys_renameat /* 250 */
- .long sys_linkat
- .long sys_symlinkat
- .long sys_readlinkat
- .long sys_fchmodat
- .long sys_faccessat
- .long __sys_pselect6
- .long sys_ppoll
- .long sys_unshare
- .long sys_set_robust_list
- .long sys_get_robust_list /* 260 */
- .long __sys_splice
- .long __sys_sync_file_range
- .long sys_tee
- .long sys_vmsplice
- .long __sys_epoll_pwait
- .long sys_msgget
- .long sys_msgsnd
- .long sys_msgrcv
- .long sys_msgctl
- .long sys_semget /* 270 */
- .long sys_semop
- .long sys_semctl
- .long sys_semtimedop
- .long sys_shmat
- .long sys_shmget
- .long sys_shmdt
- .long sys_shmctl
- .long sys_utimensat
- .long sys_signalfd
- .long sys_ni_syscall /* 280, was sys_timerfd */
- .long sys_eventfd
- .long sys_ni_syscall /* 282, was half-implemented recvmmsg */
- .long sys_setns
- .long sys_pread64
- .long sys_pwrite64
- .long sys_timerfd_create
- .long __sys_fallocate
- .long sys_timerfd_settime
- .long sys_timerfd_gettime
- .long sys_signalfd4 /* 290 */
- .long sys_eventfd2
- .long sys_epoll_create1
- .long sys_dup3
- .long sys_pipe2
- .long sys_inotify_init1
- .long sys_preadv
- .long sys_pwritev
- .long sys_rt_tgsigqueueinfo
- .long sys_perf_event_open
- .long sys_recvmmsg /* 300 */
- .long sys_fanotify_init
- .long __sys_fanotify_mark
- .long sys_prlimit64
- .long sys_name_to_handle_at
- .long sys_open_by_handle_at
- .long sys_clock_adjtime
- .long sys_syncfs
- .long sys_sendmmsg
- .long __sys_process_vm_readv
- .long __sys_process_vm_writev /* 310 */
- .long sys_kcmp
- .long sys_finit_module
- .long sys_sched_setattr
- .long sys_sched_getattr
- .long sys_renameat2
- .long sys_seccomp
- .long sys_getrandom
- .long sys_memfd_create
- .long sys_bpf
- .long sys_execveat /* 320 */
- .long sys_accept4
- .long sys_userfaultfd
- .long sys_membarrier
- .long sys_mlock2
- .long __sys_copy_file_range
- .long __sys_preadv2
- .long __sys_pwritev2
- .long sys_pkey_mprotect
- .long sys_pkey_alloc
- .long sys_pkey_free /* 330 */
- .long sys_ni_syscall /* r8 is saturated at nr_syscalls */
diff --git a/arch/avr32/kernel/time.c b/arch/avr32/kernel/time.c
deleted file mode 100644
index 4d9b69615979..000000000000
--- a/arch/avr32/kernel/time.c
+++ /dev/null
@@ -1,161 +0,0 @@
-/*
- * Copyright (C) 2004-2007 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/clk.h>
-#include <linux/clockchips.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/kernel.h>
-#include <linux/time.h>
-#include <linux/cpu.h>
-
-#include <asm/sysreg.h>
-
-#include <mach/pm.h>
-
-static bool disable_cpu_idle_poll;
-
-static u64 read_cycle_count(struct clocksource *cs)
-{
- return (u64)sysreg_read(COUNT);
-}
-
-/*
- * The architectural cycle count registers are a fine clocksource unless
- * the system idle loop use sleep states like "idle": the CPU cycles
- * measured by COUNT (and COMPARE) don't happen during sleep states.
- * Their duration also changes if cpufreq changes the CPU clock rate.
- * So we rate the clocksource using COUNT as very low quality.
- */
-static struct clocksource counter = {
- .name = "avr32_counter",
- .rating = 50,
- .read = read_cycle_count,
- .mask = CLOCKSOURCE_MASK(32),
- .flags = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-static irqreturn_t timer_interrupt(int irq, void *dev_id)
-{
- struct clock_event_device *evdev = dev_id;
-
- if (unlikely(!(intc_get_pending(0) & 1)))
- return IRQ_NONE;
-
- /*
- * Disable the interrupt until the clockevent subsystem
- * reprograms it.
- */
- sysreg_write(COMPARE, 0);
-
- evdev->event_handler(evdev);
- return IRQ_HANDLED;
-}
-
-static struct irqaction timer_irqaction = {
- .handler = timer_interrupt,
- /* Oprofile uses the same irq as the timer, so allow it to be shared */
- .flags = IRQF_TIMER | IRQF_SHARED,
- .name = "avr32_comparator",
-};
-
-static int comparator_next_event(unsigned long delta,
- struct clock_event_device *evdev)
-{
- unsigned long flags;
-
- raw_local_irq_save(flags);
-
- /* The time to read COUNT then update COMPARE must be less
- * than the min_delta_ns value for this clockevent source.
- */
- sysreg_write(COMPARE, (sysreg_read(COUNT) + delta) ? : 1);
-
- raw_local_irq_restore(flags);
-
- return 0;
-}
-
-static int comparator_shutdown(struct clock_event_device *evdev)
-{
- pr_debug("%s: %s\n", __func__, evdev->name);
- sysreg_write(COMPARE, 0);
-
- if (disable_cpu_idle_poll) {
- disable_cpu_idle_poll = false;
- /*
- * Only disable idle poll if we have forced that
- * in a previous call.
- */
- cpu_idle_poll_ctrl(false);
- }
- return 0;
-}
-
-static int comparator_set_oneshot(struct clock_event_device *evdev)
-{
- pr_debug("%s: %s\n", __func__, evdev->name);
-
- disable_cpu_idle_poll = true;
- /*
- * If we're using the COUNT and COMPARE registers we
- * need to force idle poll.
- */
- cpu_idle_poll_ctrl(true);
-
- return 0;
-}
-
-static struct clock_event_device comparator = {
- .name = "avr32_comparator",
- .features = CLOCK_EVT_FEAT_ONESHOT,
- .shift = 16,
- .rating = 50,
- .set_next_event = comparator_next_event,
- .set_state_shutdown = comparator_shutdown,
- .set_state_oneshot = comparator_set_oneshot,
- .tick_resume = comparator_set_oneshot,
-};
-
-void read_persistent_clock(struct timespec *ts)
-{
- ts->tv_sec = mktime(2007, 1, 1, 0, 0, 0);
- ts->tv_nsec = 0;
-}
-
-void __init time_init(void)
-{
- unsigned long counter_hz;
- int ret;
-
- /* figure rate for counter */
- counter_hz = clk_get_rate(boot_cpu_data.clk);
- ret = clocksource_register_hz(&counter, counter_hz);
- if (ret)
- pr_debug("timer: could not register clocksource: %d\n", ret);
-
- /* setup COMPARE clockevent */
- comparator.mult = div_sc(counter_hz, NSEC_PER_SEC, comparator.shift);
- comparator.max_delta_ns = clockevent_delta2ns((u32)~0, &comparator);
- comparator.min_delta_ns = clockevent_delta2ns(50, &comparator) + 1;
- comparator.cpumask = cpumask_of(0);
-
- sysreg_write(COMPARE, 0);
- timer_irqaction.dev_id = &comparator;
-
- ret = setup_irq(0, &timer_irqaction);
- if (ret)
- pr_debug("timer: could not request IRQ 0: %d\n", ret);
- else {
- clockevents_register_device(&comparator);
-
- pr_info("%s: irq 0, %lu.%03lu MHz\n", comparator.name,
- ((counter_hz + 500) / 1000) / 1000,
- ((counter_hz + 500) / 1000) % 1000);
- }
-}
diff --git a/arch/avr32/kernel/traps.c b/arch/avr32/kernel/traps.c
deleted file mode 100644
index 50b541325025..000000000000
--- a/arch/avr32/kernel/traps.c
+++ /dev/null
@@ -1,262 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/bug.h>
-#include <linux/hardirq.h>
-#include <linux/init.h>
-#include <linux/kallsyms.h>
-#include <linux/kdebug.h>
-#include <linux/extable.h>
-#include <linux/module.h> /* print_modules */
-#include <linux/notifier.h>
-#include <linux/sched/signal.h>
-#include <linux/uaccess.h>
-
-#include <asm/addrspace.h>
-#include <asm/mmu_context.h>
-#include <asm/ocd.h>
-#include <asm/sysreg.h>
-#include <asm/traps.h>
-
-static DEFINE_SPINLOCK(die_lock);
-
-void die(const char *str, struct pt_regs *regs, long err)
-{
- static int die_counter;
-
- console_verbose();
- spin_lock_irq(&die_lock);
- bust_spinlocks(1);
-
- printk(KERN_ALERT "Oops: %s, sig: %ld [#%d]\n",
- str, err, ++die_counter);
-
- printk(KERN_EMERG);
-
-#ifdef CONFIG_PREEMPT
- printk(KERN_CONT "PREEMPT ");
-#endif
-#ifdef CONFIG_FRAME_POINTER
- printk(KERN_CONT "FRAME_POINTER ");
-#endif
- if (current_cpu_data.features & AVR32_FEATURE_OCD) {
- unsigned long did = ocd_read(DID);
- printk(KERN_CONT "chip: 0x%03lx:0x%04lx rev %lu\n",
- (did >> 1) & 0x7ff,
- (did >> 12) & 0x7fff,
- (did >> 28) & 0xf);
- } else {
- printk(KERN_CONT "cpu: arch %u r%u / core %u r%u\n",
- current_cpu_data.arch_type,
- current_cpu_data.arch_revision,
- current_cpu_data.cpu_type,
- current_cpu_data.cpu_revision);
- }
-
- print_modules();
- show_regs_log_lvl(regs, KERN_EMERG);
- show_stack_log_lvl(current, regs->sp, regs, KERN_EMERG);
- bust_spinlocks(0);
- add_taint(TAINT_DIE, LOCKDEP_NOW_UNRELIABLE);
- spin_unlock_irq(&die_lock);
-
- if (in_interrupt())
- panic("Fatal exception in interrupt");
-
- if (panic_on_oops)
- panic("Fatal exception");
-
- do_exit(err);
-}
-
-void _exception(long signr, struct pt_regs *regs, int code,
- unsigned long addr)
-{
- siginfo_t info;
-
- if (!user_mode(regs)) {
- const struct exception_table_entry *fixup;
-
- /* Are we prepared to handle this kernel fault? */
- fixup = search_exception_tables(regs->pc);
- if (fixup) {
- regs->pc = fixup->fixup;
- return;
- }
- die("Unhandled exception in kernel mode", regs, signr);
- }
-
- memset(&info, 0, sizeof(info));
- info.si_signo = signr;
- info.si_code = code;
- info.si_addr = (void __user *)addr;
- force_sig_info(signr, &info, current);
-}
-
-asmlinkage void do_nmi(unsigned long ecr, struct pt_regs *regs)
-{
- int ret;
-
- nmi_enter();
-
- ret = notify_die(DIE_NMI, "NMI", regs, 0, ecr, SIGINT);
- switch (ret) {
- case NOTIFY_OK:
- case NOTIFY_STOP:
- break;
- case NOTIFY_BAD:
- die("Fatal Non-Maskable Interrupt", regs, SIGINT);
- default:
- printk(KERN_ALERT "Got NMI, but nobody cared. Disabling...\n");
- nmi_disable();
- break;
- }
- nmi_exit();
-}
-
-asmlinkage void do_critical_exception(unsigned long ecr, struct pt_regs *regs)
-{
- die("Critical exception", regs, SIGKILL);
-}
-
-asmlinkage void do_address_exception(unsigned long ecr, struct pt_regs *regs)
-{
- _exception(SIGBUS, regs, BUS_ADRALN, regs->pc);
-}
-
-/* This way of handling undefined instructions is stolen from ARM */
-static LIST_HEAD(undef_hook);
-static DEFINE_SPINLOCK(undef_lock);
-
-void register_undef_hook(struct undef_hook *hook)
-{
- spin_lock_irq(&undef_lock);
- list_add(&hook->node, &undef_hook);
- spin_unlock_irq(&undef_lock);
-}
-
-void unregister_undef_hook(struct undef_hook *hook)
-{
- spin_lock_irq(&undef_lock);
- list_del(&hook->node);
- spin_unlock_irq(&undef_lock);
-}
-
-static int do_cop_absent(u32 insn)
-{
- int cop_nr;
- u32 cpucr;
-
- if ((insn & 0xfdf00000) == 0xf1900000)
- /* LDC0 */
- cop_nr = 0;
- else
- cop_nr = (insn >> 13) & 0x7;
-
- /* Try enabling the coprocessor */
- cpucr = sysreg_read(CPUCR);
- cpucr |= (1 << (24 + cop_nr));
- sysreg_write(CPUCR, cpucr);
-
- cpucr = sysreg_read(CPUCR);
- if (!(cpucr & (1 << (24 + cop_nr))))
- return -ENODEV;
-
- return 0;
-}
-
-#ifdef CONFIG_BUG
-int is_valid_bugaddr(unsigned long pc)
-{
- unsigned short opcode;
-
- if (pc < PAGE_OFFSET)
- return 0;
- if (probe_kernel_address((u16 *)pc, opcode))
- return 0;
-
- return opcode == AVR32_BUG_OPCODE;
-}
-#endif
-
-asmlinkage void do_illegal_opcode(unsigned long ecr, struct pt_regs *regs)
-{
- u32 insn;
- struct undef_hook *hook;
- void __user *pc;
- long code;
-
-#ifdef CONFIG_BUG
- if (!user_mode(regs) && (ecr == ECR_ILLEGAL_OPCODE)) {
- enum bug_trap_type type;
-
- type = report_bug(regs->pc, regs);
- switch (type) {
- case BUG_TRAP_TYPE_NONE:
- break;
- case BUG_TRAP_TYPE_WARN:
- regs->pc += 2;
- return;
- case BUG_TRAP_TYPE_BUG:
- die("Kernel BUG", regs, SIGKILL);
- }
- }
-#endif
-
- local_irq_enable();
-
- if (user_mode(regs)) {
- pc = (void __user *)instruction_pointer(regs);
- if (get_user(insn, (u32 __user *)pc))
- goto invalid_area;
-
- if (ecr == ECR_COPROC_ABSENT && !do_cop_absent(insn))
- return;
-
- spin_lock_irq(&undef_lock);
- list_for_each_entry(hook, &undef_hook, node) {
- if ((insn & hook->insn_mask) == hook->insn_val) {
- if (hook->fn(regs, insn) == 0) {
- spin_unlock_irq(&undef_lock);
- return;
- }
- }
- }
- spin_unlock_irq(&undef_lock);
- }
-
- switch (ecr) {
- case ECR_PRIVILEGE_VIOLATION:
- code = ILL_PRVOPC;
- break;
- case ECR_COPROC_ABSENT:
- code = ILL_COPROC;
- break;
- default:
- code = ILL_ILLOPC;
- break;
- }
-
- _exception(SIGILL, regs, code, regs->pc);
- return;
-
-invalid_area:
- _exception(SIGSEGV, regs, SEGV_MAPERR, regs->pc);
-}
-
-asmlinkage void do_fpe(unsigned long ecr, struct pt_regs *regs)
-{
- /* We have no FPU yet */
- _exception(SIGILL, regs, ILL_COPROC, regs->pc);
-}
-
-
-void __init trap_init(void)
-{
-
-}
diff --git a/arch/avr32/kernel/vmlinux.lds.S b/arch/avr32/kernel/vmlinux.lds.S
deleted file mode 100644
index 17f2730eb497..000000000000
--- a/arch/avr32/kernel/vmlinux.lds.S
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * AVR32 linker script for the Linux kernel
- *
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#define LOAD_OFFSET 0x00000000
-#include <asm-generic/vmlinux.lds.h>
-#include <asm/cache.h>
-#include <asm/thread_info.h>
-
-OUTPUT_FORMAT("elf32-avr32", "elf32-avr32", "elf32-avr32")
-OUTPUT_ARCH(avr32)
-ENTRY(_start)
-
-/* Big endian */
-jiffies = jiffies_64 + 4;
-
-SECTIONS
-{
- . = CONFIG_ENTRY_ADDRESS;
- .init : AT(ADDR(.init) - LOAD_OFFSET) {
- _text = .;
- __init_begin = .;
- _sinittext = .;
- *(.text.reset)
- INIT_TEXT
- /*
- * .exit.text is discarded at runtime, not
- * link time, to deal with references from
- * __bug_table
- */
- EXIT_TEXT
- _einittext = .;
- . = ALIGN(4);
- __tagtable_begin = .;
- *(.taglist.init)
- __tagtable_end = .;
- }
- INIT_DATA_SECTION(16)
- . = ALIGN(PAGE_SIZE);
- __init_end = .;
-
- .text : AT(ADDR(.text) - LOAD_OFFSET) {
- _evba = .;
- _stext = .;
- *(.ex.text)
- *(.irq.text)
- KPROBES_TEXT
- TEXT_TEXT
- SCHED_TEXT
- CPUIDLE_TEXT
- LOCK_TEXT
- *(.fixup)
- *(.gnu.warning)
- _etext = .;
- } = 0xd703d703
-
- EXCEPTION_TABLE(4)
- RODATA
-
- .data : AT(ADDR(.data) - LOAD_OFFSET) {
- _data = .;
- _sdata = .;
-
- INIT_TASK_DATA(THREAD_SIZE)
- PAGE_ALIGNED_DATA(PAGE_SIZE);
- CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
- *(.data.rel*)
- DATA_DATA
- CONSTRUCTORS
-
- _edata = .;
- }
-
- BSS_SECTION(0, 8, 8)
- _end = .;
-
- DWARF_DEBUG
-
- /* When something in the kernel is NOT compiled as a module, the module
- * cleanup code and data are put into these segments. Both can then be
- * thrown away, as cleanup code is never called unless it's a module.
- */
- DISCARDS
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-01 05:06:13 +0000