diff options
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/checksum.h | 17 | ||||
| -rw-r--r-- | arch/arm/include/asm/efi.h | 23 | ||||
| -rw-r--r-- | arch/arm/include/asm/hardirq.h | 17 | ||||
| -rw-r--r-- | arch/arm/include/asm/smp.h | 5 | ||||
| -rw-r--r-- | arch/arm/include/asm/tlb.h | 1 | ||||
| -rw-r--r-- | arch/arm/include/asm/vmlinux.lds.h | 147 |
6 files changed, 168 insertions, 42 deletions
diff --git a/arch/arm/include/asm/checksum.h b/arch/arm/include/asm/checksum.h index ed6073fee338..f0f54aef3724 100644 --- a/arch/arm/include/asm/checksum.h +++ b/arch/arm/include/asm/checksum.h @@ -35,23 +35,20 @@ __wsum csum_partial(const void *buff, int len, __wsum sum); */ __wsum -csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum); +csum_partial_copy_nocheck(const void *src, void *dst, int len); __wsum -csum_partial_copy_from_user(const void __user *src, void *dst, int len, __wsum sum, int *err_ptr); +csum_partial_copy_from_user(const void __user *src, void *dst, int len); #define _HAVE_ARCH_COPY_AND_CSUM_FROM_USER +#define _HAVE_ARCH_CSUM_AND_COPY static inline -__wsum csum_and_copy_from_user (const void __user *src, void *dst, - int len, __wsum sum, int *err_ptr) +__wsum csum_and_copy_from_user(const void __user *src, void *dst, int len) { - if (access_ok(src, len)) - return csum_partial_copy_from_user(src, dst, len, sum, err_ptr); + if (!access_ok(src, len)) + return 0; - if (len) - *err_ptr = -EFAULT; - - return sum; + return csum_partial_copy_from_user(src, dst, len); } /* diff --git a/arch/arm/include/asm/efi.h b/arch/arm/include/asm/efi.h index 5dcf3c6011b7..3ee4f4381985 100644 --- a/arch/arm/include/asm/efi.h +++ b/arch/arm/include/asm/efi.h @@ -66,25 +66,24 @@ static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt) #define MAX_UNCOMP_KERNEL_SIZE SZ_32M /* - * The kernel zImage should preferably be located between 32 MB and 128 MB - * from the base of DRAM. The min address leaves space for a maximal size - * uncompressed image, and the max address is due to how the zImage decompressor - * picks a destination address. + * phys-to-virt patching requires that the physical to virtual offset fits + * into the immediate field of an add/sub instruction, which comes down to the + * 24 least significant bits being zero, and so the offset should be a multiple + * of 16 MB. Since PAGE_OFFSET itself is a multiple of 16 MB, the physical + * base should be aligned to 16 MB as well. */ -#define ZIMAGE_OFFSET_LIMIT SZ_128M -#define MIN_ZIMAGE_OFFSET MAX_UNCOMP_KERNEL_SIZE +#define EFI_PHYS_ALIGN SZ_16M -/* on ARM, the FDT should be located in the first 128 MB of RAM */ -static inline unsigned long efi_get_max_fdt_addr(unsigned long dram_base) +/* on ARM, the FDT should be located in a lowmem region */ +static inline unsigned long efi_get_max_fdt_addr(unsigned long image_addr) { - return dram_base + ZIMAGE_OFFSET_LIMIT; + return round_down(image_addr, EFI_PHYS_ALIGN) + SZ_512M; } /* on ARM, the initrd should be loaded in a lowmem region */ -static inline unsigned long efi_get_max_initrd_addr(unsigned long dram_base, - unsigned long image_addr) +static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr) { - return dram_base + SZ_512M; + return round_down(image_addr, EFI_PHYS_ALIGN) + SZ_512M; } struct efi_arm_entry_state { diff --git a/arch/arm/include/asm/hardirq.h b/arch/arm/include/asm/hardirq.h index 7a88f160b1fb..b95848ed2bc7 100644 --- a/arch/arm/include/asm/hardirq.h +++ b/arch/arm/include/asm/hardirq.h @@ -6,29 +6,12 @@ #include <linux/threads.h> #include <asm/irq.h> -/* number of IPIS _not_ including IPI_CPU_BACKTRACE */ -#define NR_IPI 7 - typedef struct { unsigned int __softirq_pending; -#ifdef CONFIG_SMP - unsigned int ipi_irqs[NR_IPI]; -#endif } ____cacheline_aligned irq_cpustat_t; #include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */ -#define __inc_irq_stat(cpu, member) __IRQ_STAT(cpu, member)++ -#define __get_irq_stat(cpu, member) __IRQ_STAT(cpu, member) - -#ifdef CONFIG_SMP -u64 smp_irq_stat_cpu(unsigned int cpu); -#else -#define smp_irq_stat_cpu(cpu) 0 -#endif - -#define arch_irq_stat_cpu smp_irq_stat_cpu - #define __ARCH_IRQ_EXIT_IRQS_DISABLED 1 #endif /* __ASM_HARDIRQ_H */ diff --git a/arch/arm/include/asm/smp.h b/arch/arm/include/asm/smp.h index a91f21e3c5b5..0ca55a607d0a 100644 --- a/arch/arm/include/asm/smp.h +++ b/arch/arm/include/asm/smp.h @@ -39,11 +39,10 @@ void handle_IPI(int ipinr, struct pt_regs *regs); */ extern void smp_init_cpus(void); - /* - * Provide a function to raise an IPI cross call on CPUs in callmap. + * Register IPI interrupts with the arch SMP code */ -extern void set_smp_cross_call(void (*)(const struct cpumask *, unsigned int)); +extern void set_smp_ipi_range(int ipi_base, int nr_ipi); /* * Called from platform specific assembly code, this is the diff --git a/arch/arm/include/asm/tlb.h b/arch/arm/include/asm/tlb.h index 9415222b49ad..b8cbe03ad260 100644 --- a/arch/arm/include/asm/tlb.h +++ b/arch/arm/include/asm/tlb.h @@ -59,6 +59,7 @@ __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp, unsigned long addr) #ifdef CONFIG_ARM_LPAE struct page *page = virt_to_page(pmdp); + pgtable_pmd_page_dtor(page); tlb_remove_table(tlb, page); #endif } diff --git a/arch/arm/include/asm/vmlinux.lds.h b/arch/arm/include/asm/vmlinux.lds.h new file mode 100644 index 000000000000..4a91428c324d --- /dev/null +++ b/arch/arm/include/asm/vmlinux.lds.h @@ -0,0 +1,147 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include <asm-generic/vmlinux.lds.h> + +#ifdef CONFIG_HOTPLUG_CPU +#define ARM_CPU_DISCARD(x) +#define ARM_CPU_KEEP(x) x +#else +#define ARM_CPU_DISCARD(x) x +#define ARM_CPU_KEEP(x) +#endif + +#if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \ + defined(CONFIG_GENERIC_BUG) || defined(CONFIG_JUMP_LABEL) +#define ARM_EXIT_KEEP(x) x +#define ARM_EXIT_DISCARD(x) +#else +#define ARM_EXIT_KEEP(x) +#define ARM_EXIT_DISCARD(x) x +#endif + +#ifdef CONFIG_MMU +#define ARM_MMU_KEEP(x) x +#define ARM_MMU_DISCARD(x) +#else +#define ARM_MMU_KEEP(x) +#define ARM_MMU_DISCARD(x) x +#endif + +#define PROC_INFO \ + . = ALIGN(4); \ + __proc_info_begin = .; \ + *(.proc.info.init) \ + __proc_info_end = .; + +#define IDMAP_TEXT \ + ALIGN_FUNCTION(); \ + __idmap_text_start = .; \ + *(.idmap.text) \ + __idmap_text_end = .; \ + +#define ARM_DISCARD \ + *(.ARM.exidx.exit.text) \ + *(.ARM.extab.exit.text) \ + *(.ARM.exidx.text.exit) \ + *(.ARM.extab.text.exit) \ + ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text)) \ + ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text)) \ + ARM_EXIT_DISCARD(EXIT_TEXT) \ + ARM_EXIT_DISCARD(EXIT_DATA) \ + EXIT_CALL \ + ARM_MMU_DISCARD(*(.text.fixup)) \ + ARM_MMU_DISCARD(*(__ex_table)) \ + COMMON_DISCARDS + +/* + * Sections that should stay zero sized, which is safer to explicitly + * check instead of blindly discarding. + */ +#define ARM_ASSERTS \ + .plt : { \ + *(.iplt) *(.rel.iplt) *(.iplt) *(.igot.plt) \ + } \ + ASSERT(SIZEOF(.plt) == 0, \ + "Unexpected run-time procedure linkages detected!") + +#define ARM_DETAILS \ + ELF_DETAILS \ + .ARM.attributes 0 : { *(.ARM.attributes) } + +#define ARM_STUBS_TEXT \ + *(.gnu.warning) \ + *(.glue_7) \ + *(.glue_7t) \ + *(.vfp11_veneer) \ + *(.v4_bx) + +#define ARM_TEXT \ + IDMAP_TEXT \ + __entry_text_start = .; \ + *(.entry.text) \ + __entry_text_end = .; \ + IRQENTRY_TEXT \ + SOFTIRQENTRY_TEXT \ + TEXT_TEXT \ + SCHED_TEXT \ + CPUIDLE_TEXT \ + LOCK_TEXT \ + KPROBES_TEXT \ + ARM_STUBS_TEXT \ + . = ALIGN(4); \ + *(.got) /* Global offset table */ \ + ARM_CPU_KEEP(PROC_INFO) + +/* Stack unwinding tables */ +#define ARM_UNWIND_SECTIONS \ + . = ALIGN(8); \ + .ARM.unwind_idx : { \ + __start_unwind_idx = .; \ + *(.ARM.exidx*) \ + __stop_unwind_idx = .; \ + } \ + .ARM.unwind_tab : { \ + __start_unwind_tab = .; \ + *(.ARM.extab*) \ + __stop_unwind_tab = .; \ + } + +/* + * The vectors and stubs are relocatable code, and the + * only thing that matters is their relative offsets + */ +#define ARM_VECTORS \ + __vectors_start = .; \ + .vectors 0xffff0000 : AT(__vectors_start) { \ + *(.vectors) \ + } \ + . = __vectors_start + SIZEOF(.vectors); \ + __vectors_end = .; \ + \ + __stubs_start = .; \ + .stubs ADDR(.vectors) + 0x1000 : AT(__stubs_start) { \ + *(.stubs) \ + } \ + . = __stubs_start + SIZEOF(.stubs); \ + __stubs_end = .; \ + \ + PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors)); + +#define ARM_TCM \ + __itcm_start = ALIGN(4); \ + .text_itcm ITCM_OFFSET : AT(__itcm_start - LOAD_OFFSET) { \ + __sitcm_text = .; \ + *(.tcm.text) \ + *(.tcm.rodata) \ + . = ALIGN(4); \ + __eitcm_text = .; \ + } \ + . = __itcm_start + SIZEOF(.text_itcm); \ + \ + __dtcm_start = .; \ + .data_dtcm DTCM_OFFSET : AT(__dtcm_start - LOAD_OFFSET) { \ + __sdtcm_data = .; \ + *(.tcm.data) \ + . = ALIGN(4); \ + __edtcm_data = .; \ + } \ + . = __dtcm_start + SIZEOF(.data_dtcm); |