diff options
Diffstat (limited to 'arch/unicore32')
25 files changed, 226 insertions, 187 deletions
diff --git a/arch/unicore32/boot/Makefile b/arch/unicore32/boot/Makefile index 79e5f88845d9..ec7fb70b412b 100644 --- a/arch/unicore32/boot/Makefile +++ b/arch/unicore32/boot/Makefile @@ -11,8 +11,6 @@ # Copyright (C) 2001~2010 GUAN Xue-tao # -MKIMAGE := $(srctree)/scripts/mkuboot.sh - targets := Image zImage uImage $(obj)/Image: vmlinux FORCE @@ -26,14 +24,8 @@ $(obj)/zImage: $(obj)/compressed/vmlinux FORCE $(call if_changed,objcopy) @echo ' Kernel: $@ is ready' -quiet_cmd_uimage = UIMAGE $@ - cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A unicore -O linux -T kernel \ - -C none -a $(LOADADDR) -e $(STARTADDR) \ - -n 'Linux-$(KERNELRELEASE)' -d $< $@ - -$(obj)/uImage: LOADADDR=0x0 - -$(obj)/uImage: STARTADDR=$(LOADADDR) +UIMAGE_ARCH = unicore +UIMAGE_LOADADDR = 0x0 $(obj)/uImage: $(obj)/zImage FORCE $(call if_changed,uimage) diff --git a/arch/unicore32/include/asm/Kbuild b/arch/unicore32/include/asm/Kbuild index ca113d6999c5..34b789b71115 100644 --- a/arch/unicore32/include/asm/Kbuild +++ b/arch/unicore32/include/asm/Kbuild @@ -3,7 +3,6 @@ include include/asm-generic/Kbuild.asm generic-y += atomic.h generic-y += auxvec.h generic-y += bitsperlong.h -generic-y += bug.h generic-y += bugs.h generic-y += cputime.h generic-y += current.h diff --git a/arch/unicore32/include/asm/barrier.h b/arch/unicore32/include/asm/barrier.h new file mode 100644 index 000000000000..a6620e5336b6 --- /dev/null +++ b/arch/unicore32/include/asm/barrier.h @@ -0,0 +1,28 @@ +/* + * Memory barrier implementations for PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2012 GUAN Xue-tao + * + * 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. + */ +#ifndef __UNICORE_BARRIER_H__ +#define __UNICORE_BARRIER_H__ + +#define isb() __asm__ __volatile__ ("" : : : "memory") +#define dsb() __asm__ __volatile__ ("" : : : "memory") +#define dmb() __asm__ __volatile__ ("" : : : "memory") + +#define mb() barrier() +#define rmb() barrier() +#define wmb() barrier() +#define smp_mb() barrier() +#define smp_rmb() barrier() +#define smp_wmb() barrier() +#define read_barrier_depends() do { } while (0) +#define smp_read_barrier_depends() do { } while (0) + +#define set_mb(var, value) do { var = value; smp_mb(); } while (0) + +#endif /* __UNICORE_BARRIER_H__ */ diff --git a/arch/unicore32/include/asm/bug.h b/arch/unicore32/include/asm/bug.h new file mode 100644 index 000000000000..b1ff8cadb086 --- /dev/null +++ b/arch/unicore32/include/asm/bug.h @@ -0,0 +1,27 @@ +/* + * Bug handling for PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2012 GUAN Xue-tao + * + * 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. + */ +#ifndef __UNICORE_BUG_H__ +#define __UNICORE_BUG_H__ + +#include <asm-generic/bug.h> + +struct pt_regs; +struct siginfo; + +extern void die(const char *msg, struct pt_regs *regs, int err); +extern void uc32_notify_die(const char *str, struct pt_regs *regs, + struct siginfo *info, unsigned long err, unsigned long trap); + +extern asmlinkage void __backtrace(void); +extern asmlinkage void c_backtrace(unsigned long fp, int pmode); + +extern void __show_regs(struct pt_regs *); + +#endif /* __UNICORE_BUG_H__ */ diff --git a/arch/unicore32/include/asm/cmpxchg.h b/arch/unicore32/include/asm/cmpxchg.h new file mode 100644 index 000000000000..df4d5acfd19f --- /dev/null +++ b/arch/unicore32/include/asm/cmpxchg.h @@ -0,0 +1,61 @@ +/* + * Atomics xchg/cmpxchg for PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2012 GUAN Xue-tao + * + * 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. + */ +#ifndef __UNICORE_CMPXCHG_H__ +#define __UNICORE_CMPXCHG_H__ + +/* + * Generate a link failure on undefined symbol if the pointer points to a value + * of unsupported size. + */ +extern void __xchg_bad_pointer(void); + +static inline unsigned long __xchg(unsigned long x, volatile void *ptr, + int size) +{ + unsigned long ret; + + switch (size) { + case 1: + asm volatile("swapb %0, %1, [%2]" + : "=&r" (ret) + : "r" (x), "r" (ptr) + : "memory", "cc"); + break; + case 4: + asm volatile("swapw %0, %1, [%2]" + : "=&r" (ret) + : "r" (x), "r" (ptr) + : "memory", "cc"); + break; + default: + ret = __xchg_bad_pointer(); + } + + return ret; +} + +#define xchg(ptr, x) \ + ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr)))) + +#include <asm-generic/cmpxchg-local.h> + +/* + * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make + * them available. + */ +#define cmpxchg_local(ptr, o, n) \ + ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), \ + (unsigned long)(o), (unsigned long)(n), sizeof(*(ptr)))) +#define cmpxchg64_local(ptr, o, n) \ + __cmpxchg64_local_generic((ptr), (o), (n)) + +#include <asm-generic/cmpxchg.h> + +#endif /* __UNICORE_CMPXCHG_H__ */ diff --git a/arch/unicore32/include/asm/exec.h b/arch/unicore32/include/asm/exec.h new file mode 100644 index 000000000000..06d1f0f57888 --- /dev/null +++ b/arch/unicore32/include/asm/exec.h @@ -0,0 +1,15 @@ +/* + * Process execution bits for PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2012 GUAN Xue-tao + * + * 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. + */ +#ifndef __UNICORE_EXEC_H__ +#define __UNICORE_EXEC_H__ + +#define arch_align_stack(x) (x) + +#endif /* __UNICORE_EXEC_H__ */ diff --git a/arch/unicore32/include/asm/hwdef-copro.h b/arch/unicore32/include/asm/hwdef-copro.h new file mode 100644 index 000000000000..a3292f039a68 --- /dev/null +++ b/arch/unicore32/include/asm/hwdef-copro.h @@ -0,0 +1,48 @@ +/* + * Co-processor register definitions for PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2012 GUAN Xue-tao + * + * 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. + */ +#ifndef __UNICORE_HWDEF_COPRO_H__ +#define __UNICORE_HWDEF_COPRO_H__ + +/* + * Control Register bits (CP#0 CR1) + */ +#define CR_M (1 << 0) /* MMU enable */ +#define CR_A (1 << 1) /* Alignment abort enable */ +#define CR_D (1 << 2) /* Dcache enable */ +#define CR_I (1 << 3) /* Icache enable */ +#define CR_B (1 << 4) /* Dcache write mechanism: write back */ +#define CR_T (1 << 5) /* Burst enable */ +#define CR_V (1 << 13) /* Vectors relocated to 0xffff0000 */ + +#ifndef __ASSEMBLY__ + +#define vectors_high() (cr_alignment & CR_V) + +extern unsigned long cr_no_alignment; /* defined in entry.S */ +extern unsigned long cr_alignment; /* defined in entry.S */ + +static inline unsigned int get_cr(void) +{ + unsigned int val; + asm("movc %0, p0.c1, #0" : "=r" (val) : : "cc"); + return val; +} + +static inline void set_cr(unsigned int val) +{ + asm volatile("movc p0.c1, %0, #0" : : "r" (val) : "cc"); + isb(); +} + +extern void adjust_cr(unsigned long mask, unsigned long set); + +#endif /* __ASSEMBLY__ */ + +#endif /* __UNICORE_HWDEF_COPRO_H__ */ diff --git a/arch/unicore32/include/asm/io.h b/arch/unicore32/include/asm/io.h index adddf6d64077..39decb6e6f57 100644 --- a/arch/unicore32/include/asm/io.h +++ b/arch/unicore32/include/asm/io.h @@ -16,7 +16,6 @@ #include <asm/byteorder.h> #include <asm/memory.h> -#include <asm/system.h> #define PCI_IOBASE PKUNITY_PCILIO_BASE #include <asm-generic/io.h> diff --git a/arch/unicore32/include/asm/pci.h b/arch/unicore32/include/asm/pci.h index dd3867727c35..f5e108f4a151 100644 --- a/arch/unicore32/include/asm/pci.h +++ b/arch/unicore32/include/asm/pci.h @@ -14,6 +14,7 @@ #ifdef __KERNEL__ #include <asm-generic/pci-dma-compat.h> +#include <asm-generic/pci-bridge.h> #include <asm-generic/pci.h> #include <mach/hardware.h> /* for PCIBIOS_MIN_* */ diff --git a/arch/unicore32/include/asm/switch_to.h b/arch/unicore32/include/asm/switch_to.h new file mode 100644 index 000000000000..39572d2bd692 --- /dev/null +++ b/arch/unicore32/include/asm/switch_to.h @@ -0,0 +1,30 @@ +/* + * Task switching for PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2012 GUAN Xue-tao + * + * 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. + */ +#ifndef __UNICORE_SWITCH_TO_H__ +#define __UNICORE_SWITCH_TO_H__ + +struct task_struct; +struct thread_info; + +/* + * switch_to(prev, next) should switch from task `prev' to `next' + * `prev' will never be the same as `next'. schedule() itself + * contains the memory barrier to tell GCC not to cache `current'. + */ +extern struct task_struct *__switch_to(struct task_struct *, + struct thread_info *, struct thread_info *); + +#define switch_to(prev, next, last) \ + do { \ + last = __switch_to(prev, task_thread_info(prev), \ + task_thread_info(next)); \ + } while (0) + +#endif /* __UNICORE_SWITCH_TO_H__ */ diff --git a/arch/unicore32/include/asm/system.h b/arch/unicore32/include/asm/system.h deleted file mode 100644 index 246b71c17fda..000000000000 --- a/arch/unicore32/include/asm/system.h +++ /dev/null @@ -1,161 +0,0 @@ -/* - * linux/arch/unicore32/include/asm/system.h - * - * Code specific to PKUnity SoC and UniCore ISA - * - * Copyright (C) 2001-2010 GUAN Xue-tao - * - * 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. - */ -#ifndef __UNICORE_SYSTEM_H__ -#define __UNICORE_SYSTEM_H__ - -#ifdef __KERNEL__ - -/* - * CR1 bits (CP#0 CR1) - */ -#define CR_M (1 << 0) /* MMU enable */ -#define CR_A (1 << 1) /* Alignment abort enable */ -#define CR_D (1 << 2) /* Dcache enable */ -#define CR_I (1 << 3) /* Icache enable */ -#define CR_B (1 << 4) /* Dcache write mechanism: write back */ -#define CR_T (1 << 5) /* Burst enable */ -#define CR_V (1 << 13) /* Vectors relocated to 0xffff0000 */ - -#ifndef __ASSEMBLY__ - -#include <linux/linkage.h> -#include <linux/irqflags.h> - -struct thread_info; -struct task_struct; - -struct pt_regs; - -void die(const char *msg, struct pt_regs *regs, int err); - -struct siginfo; -void uc32_notify_die(const char *str, struct pt_regs *regs, - struct siginfo *info, unsigned long err, unsigned long trap); - -void hook_fault_code(int nr, int (*fn)(unsigned long, unsigned int, - struct pt_regs *), - int sig, int code, const char *name); - -#define xchg(ptr, x) \ - ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr)))) - -extern asmlinkage void __backtrace(void); -extern asmlinkage void c_backtrace(unsigned long fp, int pmode); - -struct mm_struct; -extern void show_pte(struct mm_struct *mm, unsigned long addr); -extern void __show_regs(struct pt_regs *); - -extern int cpu_architecture(void); -extern void cpu_init(void); - -#define vectors_high() (cr_alignment & CR_V) - -#define isb() __asm__ __volatile__ ("" : : : "memory") -#define dsb() __asm__ __volatile__ ("" : : : "memory") -#define dmb() __asm__ __volatile__ ("" : : : "memory") - -#define mb() barrier() -#define rmb() barrier() -#define wmb() barrier() -#define smp_mb() barrier() -#define smp_rmb() barrier() -#define smp_wmb() barrier() -#define read_barrier_depends() do { } while (0) -#define smp_read_barrier_depends() do { } while (0) - -#define set_mb(var, value) do { var = value; smp_mb(); } while (0) -#define nop() __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t"); - -extern unsigned long cr_no_alignment; /* defined in entry-unicore.S */ -extern unsigned long cr_alignment; /* defined in entry-unicore.S */ - -static inline unsigned int get_cr(void) -{ - unsigned int val; - asm("movc %0, p0.c1, #0" : "=r" (val) : : "cc"); - return val; -} - -static inline void set_cr(unsigned int val) -{ - asm volatile("movc p0.c1, %0, #0 @set CR" - : : "r" (val) : "cc"); - isb(); -} - -extern void adjust_cr(unsigned long mask, unsigned long set); - -/* - * switch_to(prev, next) should switch from task `prev' to `next' - * `prev' will never be the same as `next'. schedule() itself - * contains the memory barrier to tell GCC not to cache `current'. - */ -extern struct task_struct *__switch_to(struct task_struct *, - struct thread_info *, struct thread_info *); -extern void panic(const char *fmt, ...); - -#define switch_to(prev, next, last) \ -do { \ - last = __switch_to(prev, \ - task_thread_info(prev), task_thread_info(next)); \ -} while (0) - -static inline unsigned long -__xchg(unsigned long x, volatile void *ptr, int size) -{ - unsigned long ret; - - switch (size) { - case 1: - asm volatile("@ __xchg1\n" - " swapb %0, %1, [%2]" - : "=&r" (ret) - : "r" (x), "r" (ptr) - : "memory", "cc"); - break; - case 4: - asm volatile("@ __xchg4\n" - " swapw %0, %1, [%2]" - : "=&r" (ret) - : "r" (x), "r" (ptr) - : "memory", "cc"); - break; - default: - panic("xchg: bad data size: ptr 0x%p, size %d\n", - ptr, size); - } - - return ret; -} - -#include <asm-generic/cmpxchg-local.h> - -/* - * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make - * them available. - */ -#define cmpxchg_local(ptr, o, n) \ - ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), \ - (unsigned long)(o), (unsigned long)(n), sizeof(*(ptr)))) -#define cmpxchg64_local(ptr, o, n) \ - __cmpxchg64_local_generic((ptr), (o), (n)) - -#include <asm-generic/cmpxchg.h> - -#endif /* __ASSEMBLY__ */ - -#define arch_align_stack(x) (x) - -#endif /* __KERNEL__ */ - -#endif diff --git a/arch/unicore32/include/asm/uaccess.h b/arch/unicore32/include/asm/uaccess.h index 2acda503a6d9..897e11ad8124 100644 --- a/arch/unicore32/include/asm/uaccess.h +++ b/arch/unicore32/include/asm/uaccess.h @@ -16,7 +16,6 @@ #include <linux/errno.h> #include <asm/memory.h> -#include <asm/system.h> #define __copy_from_user __copy_from_user #define __copy_to_user __copy_to_user diff --git a/arch/unicore32/kernel/dma.c b/arch/unicore32/kernel/dma.c index ae441bc3122c..ed2d4d78d9c4 100644 --- a/arch/unicore32/kernel/dma.c +++ b/arch/unicore32/kernel/dma.c @@ -18,7 +18,6 @@ #include <linux/errno.h> #include <linux/io.h> -#include <asm/system.h> #include <asm/irq.h> #include <mach/hardware.h> #include <mach/dma.h> diff --git a/arch/unicore32/kernel/head.S b/arch/unicore32/kernel/head.S index 8caf322e110d..e8f0b98c02ee 100644 --- a/arch/unicore32/kernel/head.S +++ b/arch/unicore32/kernel/head.S @@ -17,7 +17,7 @@ #include <generated/asm-offsets.h> #include <asm/memory.h> #include <asm/thread_info.h> -#include <asm/system.h> +#include <asm/hwdef-copro.h> #include <asm/pgtable-hwdef.h> #if (PHYS_OFFSET & 0x003fffff) diff --git a/arch/unicore32/kernel/hibernate.c b/arch/unicore32/kernel/hibernate.c index 7d0f0b7983a0..d75ef8b6cb56 100644 --- a/arch/unicore32/kernel/hibernate.c +++ b/arch/unicore32/kernel/hibernate.c @@ -15,7 +15,6 @@ #include <linux/suspend.h> #include <linux/bootmem.h> -#include <asm/system.h> #include <asm/page.h> #include <asm/pgtable.h> #include <asm/pgalloc.h> diff --git a/arch/unicore32/kernel/irq.c b/arch/unicore32/kernel/irq.c index d4efa7d679ff..0be5ccd7ccd2 100644 --- a/arch/unicore32/kernel/irq.c +++ b/arch/unicore32/kernel/irq.c @@ -26,7 +26,6 @@ #include <linux/syscore_ops.h> #include <linux/gpio.h> -#include <asm/system.h> #include <mach/hardware.h> #include "setup.h" diff --git a/arch/unicore32/kernel/ksyms.c b/arch/unicore32/kernel/ksyms.c index d98bd812cae1..d285d71cbe35 100644 --- a/arch/unicore32/kernel/ksyms.c +++ b/arch/unicore32/kernel/ksyms.c @@ -20,7 +20,6 @@ #include <linux/io.h> #include <asm/checksum.h> -#include <asm/system.h> #include "ksyms.h" diff --git a/arch/unicore32/kernel/pci.c b/arch/unicore32/kernel/pci.c index a8f07fe10cad..2fc2b1ba825e 100644 --- a/arch/unicore32/kernel/pci.c +++ b/arch/unicore32/kernel/pci.c @@ -21,7 +21,6 @@ #include <linux/io.h> static int debug_pci; -static int use_firmware; #define CONFIG_CMD(bus, devfn, where) \ (0x80000000 | (bus->number << 16) | (devfn << 8) | (where & ~3)) @@ -276,7 +275,7 @@ static int __init pci_common_init(void) pci_fixup_irqs(pci_common_swizzle, pci_puv3_map_irq); - if (!use_firmware) { + if (!pci_has_flag(PCI_PROBE_ONLY)) { /* * Size the bridge windows. */ @@ -303,7 +302,7 @@ char * __devinit pcibios_setup(char *str) debug_pci = 1; return NULL; } else if (!strcmp(str, "firmware")) { - use_firmware = 1; + pci_add_flags(PCI_PROBE_ONLY); return NULL; } return str; diff --git a/arch/unicore32/kernel/process.c b/arch/unicore32/kernel/process.c index 52edc2b62873..b6f0458c3143 100644 --- a/arch/unicore32/kernel/process.c +++ b/arch/unicore32/kernel/process.c @@ -34,7 +34,6 @@ #include <asm/cacheflush.h> #include <asm/processor.h> -#include <asm/system.h> #include <asm/stacktrace.h> #include "setup.h" @@ -381,7 +380,7 @@ int vectors_user_mapping(void) return install_special_mapping(mm, 0xffff0000, PAGE_SIZE, VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC | - VM_ALWAYSDUMP | VM_RESERVED, + VM_RESERVED, NULL); } diff --git a/arch/unicore32/kernel/setup.h b/arch/unicore32/kernel/setup.h index dcd1306eb5c6..f23955028a18 100644 --- a/arch/unicore32/kernel/setup.h +++ b/arch/unicore32/kernel/setup.h @@ -12,8 +12,11 @@ #ifndef __UNICORE_KERNEL_SETUP_H__ #define __UNICORE_KERNEL_SETUP_H__ +#include <asm/hwdef-copro.h> + extern void paging_init(void); extern void puv3_core_init(void); +extern void cpu_init(void); extern void puv3_ps2_init(void); extern void pci_puv3_preinit(void); diff --git a/arch/unicore32/kernel/traps.c b/arch/unicore32/kernel/traps.c index b9a26465e728..2054f0d4db13 100644 --- a/arch/unicore32/kernel/traps.c +++ b/arch/unicore32/kernel/traps.c @@ -26,7 +26,6 @@ #include <linux/unistd.h> #include <asm/cacheflush.h> -#include <asm/system.h> #include <asm/traps.h> #include "setup.h" diff --git a/arch/unicore32/mm/alignment.c b/arch/unicore32/mm/alignment.c index 28f576d733ee..de7dc5fdd58b 100644 --- a/arch/unicore32/mm/alignment.c +++ b/arch/unicore32/mm/alignment.c @@ -24,6 +24,8 @@ #include <asm/tlbflush.h> #include <asm/unaligned.h> +#include "mm.h" + #define CODING_BITS(i) (i & 0xe0000120) #define LDST_P_BIT(i) (i & (1 << 28)) /* Preindex */ diff --git a/arch/unicore32/mm/fault.c b/arch/unicore32/mm/fault.c index 283aa4b50b7a..2eeb9c04cab0 100644 --- a/arch/unicore32/mm/fault.c +++ b/arch/unicore32/mm/fault.c @@ -20,7 +20,6 @@ #include <linux/sched.h> #include <linux/io.h> -#include <asm/system.h> #include <asm/pgtable.h> #include <asm/tlbflush.h> diff --git a/arch/unicore32/mm/flush.c b/arch/unicore32/mm/flush.c index 93478cc8b26d..6d4c096ffa2a 100644 --- a/arch/unicore32/mm/flush.c +++ b/arch/unicore32/mm/flush.c @@ -14,7 +14,6 @@ #include <linux/pagemap.h> #include <asm/cacheflush.h> -#include <asm/system.h> #include <asm/tlbflush.h> void flush_cache_mm(struct mm_struct *mm) diff --git a/arch/unicore32/mm/mm.h b/arch/unicore32/mm/mm.h index 3296bca0f1f7..05c7f532eee2 100644 --- a/arch/unicore32/mm/mm.h +++ b/arch/unicore32/mm/mm.h @@ -9,6 +9,8 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ +#include <asm/hwdef-copro.h> + /* the upper-most page table pointer */ extern pmd_t *top_pmd; extern int sysctl_overcommit_memory; @@ -34,6 +36,9 @@ struct mem_type { const struct mem_type *get_mem_type(unsigned int type); extern void __flush_dcache_page(struct address_space *, struct page *); +extern void hook_fault_code(int nr, int (*fn) + (unsigned long, unsigned int, struct pt_regs *), + int sig, int code, const char *name); void __init bootmem_init(void); void uc32_mm_memblock_reserve(void); |