diff options
Diffstat (limited to 'arch/arm/mm')
48 files changed, 690 insertions, 591 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index ed15f876c72..330814d1ee2 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -735,6 +735,14 @@ config CACHE_FEROCEON_L2 help This option enables the Feroceon L2 cache controller. +config CACHE_FEROCEON_L2_WRITETHROUGH + bool "Force Feroceon L2 cache write through" + depends on CACHE_FEROCEON_L2 + default n + help + Say Y here to use the Feroceon L2 cache in writethrough mode. + Unless you specifically require this, say N for writeback mode. + config CACHE_L2X0 bool "Enable the L2x0 outer cache controller" depends on REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || MACH_REALVIEW_PB1176 diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile index 2e27a8c8372..480f78a3611 100644 --- a/arch/arm/mm/Makefile +++ b/arch/arm/mm/Makefile @@ -2,7 +2,7 @@ # Makefile for the linux arm-specific parts of the memory manager. # -obj-y := consistent.o extable.o fault.o init.o \ +obj-y := dma-mapping.o extable.o fault.o init.o \ iomap.o obj-$(CONFIG_MMU) += fault-armv.o flush.o ioremap.o mmap.o \ diff --git a/arch/arm/mm/abort-ev7.S b/arch/arm/mm/abort-ev7.S index eb90bce38e1..2e6dc040c65 100644 --- a/arch/arm/mm/abort-ev7.S +++ b/arch/arm/mm/abort-ev7.S @@ -30,3 +30,4 @@ ENTRY(v7_early_abort) * New designs should not need to patch up faults. */ mov pc, lr +ENDPROC(v7_early_abort) diff --git a/arch/arm/mm/abort-nommu.S b/arch/arm/mm/abort-nommu.S index a7cc7f9ee45..625e580945b 100644 --- a/arch/arm/mm/abort-nommu.S +++ b/arch/arm/mm/abort-nommu.S @@ -17,3 +17,4 @@ ENTRY(nommu_early_abort) mov r0, #0 @ clear r0, r1 (no FSR/FAR) mov r1, #0 mov pc, lr +ENDPROC(nommu_early_abort) diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c index e162cca5917..133e65d166b 100644 --- a/arch/arm/mm/alignment.c +++ b/arch/arm/mm/alignment.c @@ -17,8 +17,8 @@ #include <linux/string.h> #include <linux/proc_fs.h> #include <linux/init.h> +#include <linux/uaccess.h> -#include <asm/uaccess.h> #include <asm/unaligned.h> #include "fault.h" diff --git a/arch/arm/mm/cache-feroceon-l2.c b/arch/arm/mm/cache-feroceon-l2.c index 7b5a25d8157..13cdae8b0d4 100644 --- a/arch/arm/mm/cache-feroceon-l2.c +++ b/arch/arm/mm/cache-feroceon-l2.c @@ -48,11 +48,12 @@ static inline void l2_clean_mva_range(unsigned long start, unsigned long end) * L2 is PIPT and range operations only do a TLB lookup on * the start address. */ - BUG_ON((start ^ end) & ~(PAGE_SIZE - 1)); + BUG_ON((start ^ end) >> PAGE_SHIFT); raw_local_irq_save(flags); - __asm__("mcr p15, 1, %0, c15, c9, 4" : : "r" (start)); - __asm__("mcr p15, 1, %0, c15, c9, 5" : : "r" (end)); + __asm__("mcr p15, 1, %0, c15, c9, 4\n\t" + "mcr p15, 1, %1, c15, c9, 5" + : : "r" (start), "r" (end)); raw_local_irq_restore(flags); } @@ -80,11 +81,12 @@ static inline void l2_inv_mva_range(unsigned long start, unsigned long end) * L2 is PIPT and range operations only do a TLB lookup on * the start address. */ - BUG_ON((start ^ end) & ~(PAGE_SIZE - 1)); + BUG_ON((start ^ end) >> PAGE_SHIFT); raw_local_irq_save(flags); - __asm__("mcr p15, 1, %0, c15, c11, 4" : : "r" (start)); - __asm__("mcr p15, 1, %0, c15, c11, 5" : : "r" (end)); + __asm__("mcr p15, 1, %0, c15, c11, 4\n\t" + "mcr p15, 1, %1, c15, c11, 5" + : : "r" (start), "r" (end)); raw_local_irq_restore(flags); } @@ -205,7 +207,7 @@ static void feroceon_l2_flush_range(unsigned long start, unsigned long end) * time. These are necessary because the L2 cache can only be enabled * or disabled while the L1 Dcache and Icache are both disabled. */ -static void __init invalidate_and_disable_dcache(void) +static int __init flush_and_disable_dcache(void) { u32 cr; @@ -217,7 +219,9 @@ static void __init invalidate_and_disable_dcache(void) flush_cache_all(); set_cr(cr & ~CR_C); raw_local_irq_restore(flags); + return 1; } + return 0; } static void __init enable_dcache(void) @@ -225,18 +229,17 @@ static void __init enable_dcache(void) u32 cr; cr = get_cr(); - if (!(cr & CR_C)) - set_cr(cr | CR_C); + set_cr(cr | CR_C); } static void __init __invalidate_icache(void) { int dummy; - __asm__ __volatile__("mcr p15, 0, %0, c7, c5, 0\n" : "=r" (dummy)); + __asm__ __volatile__("mcr p15, 0, %0, c7, c5, 0" : "=r" (dummy)); } -static void __init invalidate_and_disable_icache(void) +static int __init invalidate_and_disable_icache(void) { u32 cr; @@ -244,7 +247,9 @@ static void __init invalidate_and_disable_icache(void) if (cr & CR_I) { set_cr(cr & ~CR_I); __invalidate_icache(); + return 1; } + return 0; } static void __init enable_icache(void) @@ -252,8 +257,7 @@ static void __init enable_icache(void) u32 cr; cr = get_cr(); - if (!(cr & CR_I)) - set_cr(cr | CR_I); + set_cr(cr | CR_I); } static inline u32 read_extra_features(void) @@ -291,13 +295,17 @@ static void __init enable_l2(void) u = read_extra_features(); if (!(u & 0x00400000)) { + int i, d; + printk(KERN_INFO "Feroceon L2: Enabling L2\n"); - invalidate_and_disable_dcache(); - invalidate_and_disable_icache(); + d = flush_and_disable_dcache(); + i = invalidate_and_disable_icache(); write_extra_features(u | 0x00400000); - enable_icache(); - enable_dcache(); + if (i) + enable_icache(); + if (d) + enable_dcache(); } } diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c index 76b800a9519..b480f1d3591 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -18,9 +18,9 @@ */ #include <linux/init.h> #include <linux/spinlock.h> +#include <linux/io.h> #include <asm/cacheflush.h> -#include <asm/io.h> #include <asm/hardware/cache-l2x0.h> #define CACHE_LINE_SIZE 32 diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S index 35ffc4d9599..d19c2bec2b1 100644 --- a/arch/arm/mm/cache-v7.S +++ b/arch/arm/mm/cache-v7.S @@ -66,6 +66,7 @@ finished: mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr isb mov pc, lr +ENDPROC(v7_flush_dcache_all) /* * v7_flush_cache_all() @@ -85,6 +86,7 @@ ENTRY(v7_flush_kern_cache_all) mcr p15, 0, r0, c7, c5, 0 @ I+BTB cache invalidate ldmfd sp!, {r4-r5, r7, r9-r11, lr} mov pc, lr +ENDPROC(v7_flush_kern_cache_all) /* * v7_flush_cache_all() @@ -110,6 +112,8 @@ ENTRY(v7_flush_user_cache_all) */ ENTRY(v7_flush_user_cache_range) mov pc, lr +ENDPROC(v7_flush_user_cache_all) +ENDPROC(v7_flush_user_cache_range) /* * v7_coherent_kern_range(start,end) @@ -155,6 +159,8 @@ ENTRY(v7_coherent_user_range) dsb isb mov pc, lr +ENDPROC(v7_coherent_kern_range) +ENDPROC(v7_coherent_user_range) /* * v7_flush_kern_dcache_page(kaddr) @@ -174,6 +180,7 @@ ENTRY(v7_flush_kern_dcache_page) blo 1b dsb mov pc, lr +ENDPROC(v7_flush_kern_dcache_page) /* * v7_dma_inv_range(start,end) @@ -202,6 +209,7 @@ ENTRY(v7_dma_inv_range) blo 1b dsb mov pc, lr +ENDPROC(v7_dma_inv_range) /* * v7_dma_clean_range(start,end) @@ -219,6 +227,7 @@ ENTRY(v7_dma_clean_range) blo 1b dsb mov pc, lr +ENDPROC(v7_dma_clean_range) /* * v7_dma_flush_range(start,end) @@ -236,6 +245,7 @@ ENTRY(v7_dma_flush_range) blo 1b dsb mov pc, lr +ENDPROC(v7_dma_flush_range) __INITDATA diff --git a/arch/arm/mm/cache-xsc3l2.c b/arch/arm/mm/cache-xsc3l2.c index 158bd96763d..10b1bae1a25 100644 --- a/arch/arm/mm/cache-xsc3l2.c +++ b/arch/arm/mm/cache-xsc3l2.c @@ -18,10 +18,11 @@ */ #include <linux/init.h> #include <linux/spinlock.h> +#include <linux/io.h> #include <asm/system.h> +#include <asm/cputype.h> #include <asm/cacheflush.h> -#include <asm/io.h> #define CR_L2 (1 << 26) diff --git a/arch/arm/mm/copypage-v4mc.c b/arch/arm/mm/copypage-v4mc.c index ded0e96d069..8d33e254934 100644 --- a/arch/arm/mm/copypage-v4mc.c +++ b/arch/arm/mm/copypage-v4mc.c @@ -28,7 +28,7 @@ * specific hacks for copying pages efficiently. */ #define minicache_pgprot __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | \ - L_PTE_CACHEABLE) + L_PTE_MT_MINICACHE) static DEFINE_SPINLOCK(minicache_lock); diff --git a/arch/arm/mm/copypage-v6.c b/arch/arm/mm/copypage-v6.c index 3adb79257f4..0e21c076758 100644 --- a/arch/arm/mm/copypage-v6.c +++ b/arch/arm/mm/copypage-v6.c @@ -16,6 +16,7 @@ #include <asm/shmparam.h> #include <asm/tlbflush.h> #include <asm/cacheflush.h> +#include <asm/cachetype.h> #include "mm.h" diff --git a/arch/arm/mm/copypage-xscale.c b/arch/arm/mm/copypage-xscale.c index 2e455f82a4d..bad49331bbf 100644 --- a/arch/arm/mm/copypage-xscale.c +++ b/arch/arm/mm/copypage-xscale.c @@ -30,7 +30,7 @@ #define COPYPAGE_MINICACHE 0xffff8000 #define minicache_pgprot __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | \ - L_PTE_CACHEABLE) + L_PTE_MT_MINICACHE) static DEFINE_SPINLOCK(minicache_lock); diff --git a/arch/arm/mm/consistent.c b/arch/arm/mm/dma-mapping.c index db7b3e38ef1..67960017dc8 100644 --- a/arch/arm/mm/consistent.c +++ b/arch/arm/mm/dma-mapping.c @@ -1,5 +1,5 @@ /* - * linux/arch/arm/mm/consistent.c + * linux/arch/arm/mm/dma-mapping.c * * Copyright (C) 2000-2004 Russell King * @@ -512,3 +512,105 @@ void dma_cache_maint(const void *start, size_t size, int direction) } } EXPORT_SYMBOL(dma_cache_maint); + +/** + * dma_map_sg - map a set of SG buffers for streaming mode DMA + * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices + * @sg: list of buffers + * @nents: number of buffers to map + * @dir: DMA transfer direction + * + * Map a set of buffers described by scatterlist in streaming mode for DMA. + * This is the scatter-gather version of the dma_map_single interface. + * Here the scatter gather list elements are each tagged with the + * appropriate dma address and length. They are obtained via + * sg_dma_{address,length}. + * + * Device ownership issues as mentioned for dma_map_single are the same + * here. + */ +int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, + enum dma_data_direction dir) +{ + struct scatterlist *s; + int i, j; + + for_each_sg(sg, s, nents, i) { + s->dma_address = dma_map_page(dev, sg_page(s), s->offset, + s->length, dir); + if (dma_mapping_error(dev, s->dma_address)) + goto bad_mapping; + } + return nents; + + bad_mapping: + for_each_sg(sg, s, i, j) + dma_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir); + return 0; +} +EXPORT_SYMBOL(dma_map_sg); + +/** + * dma_unmap_sg - unmap a set of SG buffers mapped by dma_map_sg + * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices + * @sg: list of buffers + * @nents: number of buffers to unmap (returned from dma_map_sg) + * @dir: DMA transfer direction (same as was passed to dma_map_sg) + * + * Unmap a set of streaming mode DMA translations. Again, CPU access + * rules concerning calls here are the same as for dma_unmap_single(). + */ +void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents, + enum dma_data_direction dir) +{ + struct scatterlist *s; + int i; + + for_each_sg(sg, s, nents, i) + dma_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir); +} +EXPORT_SYMBOL(dma_unmap_sg); + +/** + * dma_sync_sg_for_cpu + * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices + * @sg: list of buffers + * @nents: number of buffers to map (returned from dma_map_sg) + * @dir: DMA transfer direction (same as was passed to dma_map_sg) + */ +void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction dir) +{ + struct scatterlist *s; + int i; + + for_each_sg(sg, s, nents, i) { + dmabounce_sync_for_cpu(dev, sg_dma_address(s), 0, + sg_dma_len(s), dir); + } +} +EXPORT_SYMBOL(dma_sync_sg_for_cpu); + +/** + * dma_sync_sg_for_device + * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices + * @sg: list of buffers + * @nents: number of buffers to map (returned from dma_map_sg) + * @dir: DMA transfer direction (same as was passed to dma_map_sg) + */ +void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction dir) +{ + struct scatterlist *s; + int i; + + for_each_sg(sg, s, nents, i) { + if (!dmabounce_sync_for_device(dev, sg_dma_address(s), 0, + sg_dma_len(s), dir)) + continue; + + if (!arch_is_coherent()) + dma_cache_maint(sg_virt(s), s->length, dir); + } +} +EXPORT_SYMBOL(dma_sync_sg_for_device); diff --git a/arch/arm/mm/extable.c b/arch/arm/mm/extable.c index 9592c3ee4cb..9d285626bc7 100644 --- a/arch/arm/mm/extable.c +++ b/arch/arm/mm/extable.c @@ -2,7 +2,7 @@ * linux/arch/arm/mm/extable.c */ #include <linux/module.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> int fixup_exception(struct pt_regs *regs) { diff --git a/arch/arm/mm/fault-armv.c b/arch/arm/mm/fault-armv.c index a8ec97b4752..81d0b8772de 100644 --- a/arch/arm/mm/fault-armv.c +++ b/arch/arm/mm/fault-armv.c @@ -17,11 +17,13 @@ #include <linux/init.h> #include <linux/pagemap.h> +#include <asm/bugs.h> #include <asm/cacheflush.h> +#include <asm/cachetype.h> #include <asm/pgtable.h> #include <asm/tlbflush.h> -static unsigned long shared_pte_mask = L_PTE_CACHEABLE; +static unsigned long shared_pte_mask = L_PTE_MT_BUFFERABLE; /* * We take the easy way out of this problem - we make the @@ -63,9 +65,10 @@ static int adjust_pte(struct vm_area_struct *vma, unsigned long address) * If this page isn't present, or is already setup to * fault (ie, is old), we can safely ignore any issues. */ - if (ret && pte_val(entry) & shared_pte_mask) { + if (ret && (pte_val(entry) & L_PTE_MT_MASK) != shared_pte_mask) { flush_cache_page(vma, address, pte_pfn(entry)); - pte_val(entry) &= ~shared_pte_mask; + pte_val(entry) &= ~L_PTE_MT_MASK; + pte_val(entry) |= shared_pte_mask; set_pte_at(vma->vm_mm, address, pte, entry); flush_tlb_page(vma, address); } @@ -197,7 +200,7 @@ void __init check_writebuffer_bugs(void) unsigned long *p1, *p2; pgprot_t prot = __pgprot(L_PTE_PRESENT|L_PTE_YOUNG| L_PTE_DIRTY|L_PTE_WRITE| - L_PTE_BUFFERABLE); + L_PTE_MT_BUFFERABLE); p1 = vmap(&page, 1, VM_IOREMAP, prot); p2 = vmap(&page, 1, VM_IOREMAP, prot); @@ -218,7 +221,7 @@ void __init check_writebuffer_bugs(void) if (v) { printk("failed, %s\n", reason); - shared_pte_mask |= L_PTE_BUFFERABLE; + shared_pte_mask = L_PTE_MT_UNCACHED; } else { printk("ok\n"); } diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c index 28ad7ab1c0c..2df8d9facf5 100644 --- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c @@ -13,11 +13,11 @@ #include <linux/mm.h> #include <linux/init.h> #include <linux/kprobes.h> +#include <linux/uaccess.h> #include <asm/system.h> #include <asm/pgtable.h> #include <asm/tlbflush.h> -#include <asm/uaccess.h> #include "fault.h" @@ -72,9 +72,8 @@ void show_pte(struct mm_struct *mm, unsigned long addr) } pmd = pmd_offset(pgd, addr); -#if PTRS_PER_PMD != 1 - printk(", *pmd=%08lx", pmd_val(*pmd)); -#endif + if (PTRS_PER_PMD != 1) + printk(", *pmd=%08lx", pmd_val(*pmd)); if (pmd_none(*pmd)) break; diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c index 029ee65fda2..0fa9bf388f0 100644 --- a/arch/arm/mm/flush.c +++ b/arch/arm/mm/flush.c @@ -12,6 +12,7 @@ #include <linux/pagemap.h> #include <asm/cacheflush.h> +#include <asm/cachetype.h> #include <asm/system.h> #include <asm/tlbflush.h> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 30a69d67d67..82c4b421798 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -26,9 +26,42 @@ #include "mm.h" -extern void _text, _etext, __data_start, _end, __init_begin, __init_end; -extern unsigned long phys_initrd_start; -extern unsigned long phys_initrd_size; +static unsigned long phys_initrd_start __initdata = 0; +static unsigned long phys_initrd_size __initdata = 0; + +static void __init early_initrd(char **p) +{ + unsigned long start, size; + + start = memparse(*p, p); + if (**p == ',') { + size = memparse((*p) + 1, p); + + phys_initrd_start = start; + phys_initrd_size = size; + } +} +__early_param("initrd=", early_initrd); + +static int __init parse_tag_initrd(const struct tag *tag) +{ + printk(KERN_WARNING "ATAG_INITRD is deprecated; " + "please update your bootloader.\n"); + phys_initrd_start = __virt_to_phys(tag->u.initrd.start); + phys_initrd_size = tag->u.initrd.size; + return 0; +} + +__tagtable(ATAG_INITRD, parse_tag_initrd); + +static int __init parse_tag_initrd2(const struct tag *tag) +{ + phys_initrd_start = tag->u.initrd.start; + phys_initrd_size = tag->u.initrd.size; + return 0; +} + +__tagtable(ATAG_INITRD2, parse_tag_initrd2); /* * This is used to pass memory configuration data from paging_init @@ -36,10 +69,6 @@ extern unsigned long phys_initrd_size; */ static struct meminfo meminfo = { 0, }; -#define for_each_nodebank(iter,mi,no) \ - for (iter = 0; iter < mi->nr_banks; iter++) \ - if (mi->bank[iter].node == no) - void show_mem(void) { int free = 0, total = 0, reserved = 0; @@ -50,14 +79,15 @@ void show_mem(void) show_free_areas(); for_each_online_node(node) { pg_data_t *n = NODE_DATA(node); - struct page *map = n->node_mem_map - n->node_start_pfn; + struct page *map = pgdat_page_nr(n, 0) - n->node_start_pfn; for_each_nodebank (i,mi,node) { + struct membank *bank = &mi->bank[i]; unsigned int pfn1, pfn2; struct page *page, *end; - pfn1 = __phys_to_pfn(mi->bank[i].start); - pfn2 = __phys_to_pfn(mi->bank[i].size + mi->bank[i].start); + pfn1 = bank_pfn_start(bank); + pfn2 = bank_pfn_end(bank); page = map + pfn1; end = map + pfn2; @@ -96,17 +126,17 @@ void show_mem(void) static unsigned int __init find_bootmap_pfn(int node, struct meminfo *mi, unsigned int bootmap_pages) { - unsigned int start_pfn, bank, bootmap_pfn; + unsigned int start_pfn, i, bootmap_pfn; start_pfn = PAGE_ALIGN(__pa(&_end)) >> PAGE_SHIFT; bootmap_pfn = 0; - for_each_nodebank(bank, mi, node) { + for_each_nodebank(i, mi, node) { + struct membank *bank = &mi->bank[i]; unsigned int start, end; - start = mi->bank[bank].start >> PAGE_SHIFT; - end = (mi->bank[bank].size + - mi->bank[bank].start) >> PAGE_SHIFT; + start = bank_pfn_start(bank); + end = bank_pfn_end(bank); if (end < start_pfn) continue; @@ -145,13 +175,10 @@ static int __init check_initrd(struct meminfo *mi) initrd_node = -1; for (i = 0; i < mi->nr_banks; i++) { - unsigned long bank_end; - - bank_end = mi->bank[i].start + mi->bank[i].size; - - if (mi->bank[i].start <= phys_initrd_start && - end <= bank_end) - initrd_node = mi->bank[i].node; + struct membank *bank = &mi->bank[i]; + if (bank_phys_start(bank) <= phys_initrd_start && + end <= bank_phys_end(bank)) + initrd_node = bank->node; } } @@ -171,19 +198,17 @@ static inline void map_memory_bank(struct membank *bank) #ifdef CONFIG_MMU struct map_desc map; - map.pfn = __phys_to_pfn(bank->start); - map.virtual = __phys_to_virt(bank->start); - map.length = bank->size; + map.pfn = bank_pfn_start(bank); + map.virtual = __phys_to_virt(bank_phys_start(bank)); + map.length = bank_phys_size(bank); map.type = MT_MEMORY; create_mapping(&map); #endif } -static unsigned long __init -bootmem_init_node(int node, int initrd_node, struct meminfo *mi) +static unsigned long __init bootmem_init_node(int node, struct meminfo *mi) { - unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES]; unsigned long start_pfn, end_pfn, boot_pfn; unsigned int boot_pages; pg_data_t *pgdat; @@ -199,8 +224,8 @@ bootmem_init_node(int node, int initrd_node, struct meminfo *mi) struct membank *bank = &mi->bank[i]; unsigned long start, end; - start = bank->start >> PAGE_SHIFT; - end = (bank->start + bank->size) >> PAGE_SHIFT; + start = bank_pfn_start(bank); + end = bank_pfn_end(bank); if (start_pfn > start) start_pfn = start; @@ -230,8 +255,11 @@ bootmem_init_node(int node, int initrd_node, struct meminfo *mi) pgdat = NODE_DATA(node); init_bootmem_node(pgdat, boot_pfn, start_pfn, end_pfn); - for_each_nodebank(i, mi, node) - free_bootmem_node(pgdat, mi->bank[i].start, mi->bank[i].size); + for_each_nodebank(i, mi, node) { + struct membank *bank = &mi->bank[i]; + free_bootmem_node(pgdat, bank_phys_start(bank), bank_phys_size(bank)); + memory_present(node, bank_pfn_start(bank), bank_pfn_end(bank)); + } /* * Reserve the bootmem bitmap for this node. @@ -239,31 +267,39 @@ bootmem_init_node(int node, int initrd_node, struct meminfo *mi) reserve_bootmem_node(pgdat, boot_pfn << PAGE_SHIFT, boot_pages << PAGE_SHIFT, BOOTMEM_DEFAULT); - /* - * Reserve any special node zero regions. - */ - if (node == 0) - reserve_node_zero(pgdat); + return end_pfn; +} +static void __init bootmem_reserve_initrd(int node) +{ #ifdef CONFIG_BLK_DEV_INITRD - /* - * If the initrd is in this node, reserve its memory. - */ - if (node == initrd_node) { - int res = reserve_bootmem_node(pgdat, phys_initrd_start, - phys_initrd_size, BOOTMEM_EXCLUSIVE); - - if (res == 0) { - initrd_start = __phys_to_virt(phys_initrd_start); - initrd_end = initrd_start + phys_initrd_size; - } else { - printk(KERN_ERR - "INITRD: 0x%08lx+0x%08lx overlaps in-use " - "memory region - disabling initrd\n", - phys_initrd_start, phys_initrd_size); - } + pg_data_t *pgdat = NODE_DATA(node); + int res; + + res = reserve_bootmem_node(pgdat, phys_initrd_start, + phys_initrd_size, BOOTMEM_EXCLUSIVE); + + if (res == 0) { + initrd_start = __phys_to_virt(phys_initrd_start); + initrd_end = initrd_start + phys_initrd_size; + } else { + printk(KERN_ERR + "INITRD: 0x%08lx+0x%08lx overlaps in-use " + "memory region - disabling initrd\n", + phys_initrd_start, phys_initrd_size); } #endif +} + +static void __init bootmem_free_node(int node, struct meminfo *mi) +{ + unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES]; + unsigned long start_pfn, end_pfn; + pg_data_t *pgdat = NODE_DATA(node); + int i; + + start_pfn = pgdat->bdata->node_min_pfn; + end_pfn = pgdat->bdata->node_low_pfn; /* * initialise the zones within this node. @@ -284,7 +320,7 @@ bootmem_init_node(int node, int initrd_node, struct meminfo *mi) */ zhole_size[0] = zone_size[0]; for_each_nodebank(i, mi, node) - zhole_size[0] -= mi->bank[i].size >> PAGE_SHIFT; + zhole_size[0] -= bank_pfn_size(&mi->bank[i]); /* * Adjust the sizes according to any special requirements for @@ -293,21 +329,12 @@ bootmem_init_node(int node, int initrd_node, struct meminfo *mi) arch_adjust_zones(node, zone_size, zhole_size); free_area_init_node(node, zone_size, start_pfn, zhole_size); - - return end_pfn; } void __init bootmem_init(struct meminfo *mi) { unsigned long memend_pfn = 0; - int node, initrd_node, i; - - /* - * Invalidate the node number for empty or invalid memory banks - */ - for (i = 0; i < mi->nr_banks; i++) - if (mi->bank[i].size == 0 || mi->bank[i].node >= MAX_NUMNODES) - mi->bank[i].node = -1; + int node, initrd_node; memcpy(&meminfo, mi, sizeof(meminfo)); @@ -320,9 +347,19 @@ void __init bootmem_init(struct meminfo *mi) * Run through each node initialising the bootmem allocator. */ for_each_node(node) { - unsigned long end_pfn; + unsigned long end_pfn = bootmem_init_node(node, mi); - end_pfn = bootmem_init_node(node, initrd_node, mi); + /* + * Reserve any special node zero regions. + */ + if (node == 0) + reserve_node_zero(NODE_DATA(node)); + + /* + * If the initrd is in this node, reserve its memory. + */ + if (node == initrd_node) + bootmem_reserve_initrd(node); /* * Remember the highest memory PFN. @@ -331,6 +368,19 @@ void __init bootmem_init(struct meminfo *mi) memend_pfn = end_pfn; } + /* + * sparse_init() needs the bootmem allocator up and running. + */ + sparse_init(); + + /* + * Now free memory in each node - free_area_init_node needs + * the sparse mem_map arrays initialized by sparse_init() + * for memmap_init_zone(), otherwise all PFNs are invalid. + */ + for_each_node(node) + bootmem_free_node(node, mi); + high_memory = __va(memend_pfn << PAGE_SHIFT); /* @@ -401,7 +451,9 @@ static void __init free_unused_memmap_node(int node, struct meminfo *mi) * information on the command line. */ for_each_nodebank(i, mi, node) { - bank_start = mi->bank[i].start >> PAGE_SHIFT; + struct membank *bank = &mi->bank[i]; + + bank_start = bank_pfn_start(bank); if (bank_start < prev_bank_end) { printk(KERN_ERR "MEM: unordered memory banks. " "Not freeing memmap.\n"); @@ -415,8 +467,7 @@ static void __init free_unused_memmap_node(int node, struct meminfo *mi) if (prev_bank_end && prev_bank_end != bank_start) free_memmap(node, prev_bank_end, bank_start); - prev_bank_end = (mi->bank[i].start + - mi->bank[i].size) >> PAGE_SHIFT; + prev_bank_end = bank_pfn_end(bank); } } @@ -461,8 +512,8 @@ void __init mem_init(void) num_physpages = 0; for (i = 0; i < meminfo.nr_banks; i++) { - num_physpages += meminfo.bank[i].size >> PAGE_SHIFT; - printk(" %ldMB", meminfo.bank[i].size >> 20); + num_physpages += bank_pfn_size(&meminfo.bank[i]); + printk(" %ldMB", bank_phys_size(&meminfo.bank[i]) >> 20); } printk(" = %luMB total\n", num_physpages >> (20 - PAGE_SHIFT)); diff --git a/arch/arm/mm/iomap.c b/arch/arm/mm/iomap.c index 7429f8c0101..ffad039cbb7 100644 --- a/arch/arm/mm/iomap.c +++ b/arch/arm/mm/iomap.c @@ -7,8 +7,7 @@ #include <linux/module.h> #include <linux/pci.h> #include <linux/ioport.h> - -#include <asm/io.h> +#include <linux/io.h> #ifdef __io void __iomem *ioport_map(unsigned long port, unsigned int nr) diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c index b81dbf9ffb7..18373f73f2f 100644 --- a/arch/arm/mm/ioremap.c +++ b/arch/arm/mm/ioremap.c @@ -24,9 +24,10 @@ #include <linux/errno.h> #include <linux/mm.h> #include <linux/vmalloc.h> +#include <linux/io.h> +#include <asm/cputype.h> #include <asm/cacheflush.h> -#include <asm/io.h> #include <asm/mmu_context.h> #include <asm/pgalloc.h> #include <asm/tlbflush.h> @@ -55,8 +56,7 @@ static int remap_area_pte(pmd_t *pmd, unsigned long addr, unsigned long end, if (!pte_none(*pte)) goto bad; - set_pte_ext(pte, pfn_pte(phys_addr >> PAGE_SHIFT, prot), - type->prot_pte_ext); + set_pte_ext(pte, pfn_pte(phys_addr >> PAGE_SHIFT, prot), 0); phys_addr += PAGE_SIZE; } while (pte++, addr += PAGE_SIZE, addr != end); return 0; @@ -332,15 +332,14 @@ __arm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype) } EXPORT_SYMBOL(__arm_ioremap); -void __iounmap(volatile void __iomem *addr) +void __iounmap(volatile void __iomem *io_addr) { + void *addr = (void *)(PAGE_MASK & (unsigned long)io_addr); #ifndef CONFIG_SMP struct vm_struct **p, *tmp; #endif unsigned int section_mapping = 0; - addr = (volatile void __iomem *)(PAGE_MASK & (unsigned long)addr); - #ifndef CONFIG_SMP /* * If this is a section based mapping we need to handle it @@ -351,7 +350,7 @@ void __iounmap(volatile void __iomem *addr) */ write_lock(&vmlist_lock); for (p = &vmlist ; (tmp = *p) ; p = &tmp->next) { - if((tmp->flags & VM_IOREMAP) && (tmp->addr == addr)) { + if ((tmp->flags & VM_IOREMAP) && (tmp->addr == addr)) { if (tmp->flags & VM_ARM_SECTION_MAPPING) { *p = tmp->next; unmap_area_sections((unsigned long)tmp->addr, @@ -366,6 +365,6 @@ void __iounmap(volatile void __iomem *addr) #endif if (!section_mapping) - vunmap((void __force *)addr); + vunmap(addr); } EXPORT_SYMBOL(__iounmap); diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h index 7647c597fc5..5d9f53907b4 100644 --- a/arch/arm/mm/mm.h +++ b/arch/arm/mm/mm.h @@ -18,7 +18,6 @@ static inline pmd_t *pmd_off_k(unsigned long virt) struct mem_type { unsigned int prot_pte; - unsigned int prot_pte_ext; unsigned int prot_l1; unsigned int prot_sect; unsigned int domain; @@ -35,3 +34,5 @@ struct pglist_data; void __init create_mapping(struct map_desc *md); void __init bootmem_init(struct meminfo *mi); void reserve_node_zero(struct pglist_data *pgdat); + +extern void _text, _stext, _etext, __data_start, _end, __init_begin, __init_end; diff --git a/arch/arm/mm/mmap.c b/arch/arm/mm/mmap.c index 3f6dc40b835..5358fcc7f61 100644 --- a/arch/arm/mm/mmap.c +++ b/arch/arm/mm/mmap.c @@ -6,6 +6,8 @@ #include <linux/mman.h> #include <linux/shm.h> #include <linux/sched.h> +#include <linux/io.h> +#include <asm/cputype.h> #include <asm/system.h> #define COLOUR_ALIGN(addr,pgoff) \ @@ -37,8 +39,8 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, * caches alias. This is indicated by bits 9 and 21 of the * cache type register. */ - cache_type = read_cpuid(CPUID_CACHETYPE); - if (cache_type != read_cpuid(CPUID_ID)) { + cache_type = read_cpuid_cachetype(); + if (cache_type != read_cpuid_id()) { aliasing = (cache_type | cache_type >> 12) & (1 << 11); if (aliasing) do_align = filp || flags & MAP_SHARED; diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 25d9a11eb61..8ba75406455 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -15,6 +15,7 @@ #include <linux/mman.h> #include <linux/nodemask.h> +#include <asm/cputype.h> #include <asm/mach-types.h> #include <asm/setup.h> #include <asm/sizes.h> @@ -27,9 +28,6 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); -extern void _stext, _etext, __data_start, _end; -extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; - /* * empty_zero_page is a special page that is used for * zero-initialized data and COW. @@ -68,27 +66,27 @@ static struct cachepolicy cache_policies[] __initdata = { .policy = "uncached", .cr_mask = CR_W|CR_C, .pmd = PMD_SECT_UNCACHED, - .pte = 0, + .pte = L_PTE_MT_UNCACHED, }, { .policy = "buffered", .cr_mask = CR_C, .pmd = PMD_SECT_BUFFERED, - .pte = PTE_BUFFERABLE, + .pte = L_PTE_MT_BUFFERABLE, }, { .policy = "writethrough", .cr_mask = 0, .pmd = PMD_SECT_WT, - .pte = PTE_CACHEABLE, + .pte = L_PTE_MT_WRITETHROUGH, }, { .policy = "writeback", .cr_mask = 0, .pmd = PMD_SECT_WB, - .pte = PTE_BUFFERABLE|PTE_CACHEABLE, + .pte = L_PTE_MT_WRITEBACK, }, { .policy = "writealloc", .cr_mask = 0, .pmd = PMD_SECT_WBWA, - .pte = PTE_BUFFERABLE|PTE_CACHEABLE, + .pte = L_PTE_MT_WRITEALLOC, } }; @@ -186,29 +184,28 @@ void adjust_cr(unsigned long mask, unsigned long set) static struct mem_type mem_types[] = { [MT_DEVICE] = { /* Strongly ordered / ARMv6 shared device */ - .prot_pte = PROT_PTE_DEVICE, + .prot_pte = PROT_PTE_DEVICE | L_PTE_MT_DEV_SHARED | + L_PTE_SHARED, .prot_l1 = PMD_TYPE_TABLE, .prot_sect = PROT_SECT_DEVICE | PMD_SECT_UNCACHED, .domain = DOMAIN_IO, }, [MT_DEVICE_NONSHARED] = { /* ARMv6 non-shared device */ - .prot_pte = PROT_PTE_DEVICE, - .prot_pte_ext = PTE_EXT_TEX(2), + .prot_pte = PROT_PTE_DEVICE | L_PTE_MT_DEV_NONSHARED, .prot_l1 = PMD_TYPE_TABLE, .prot_sect = PROT_SECT_DEVICE | PMD_SECT_TEX(2), .domain = DOMAIN_IO, }, [MT_DEVICE_CACHED] = { /* ioremap_cached */ - .prot_pte = PROT_PTE_DEVICE | L_PTE_CACHEABLE | L_PTE_BUFFERABLE, + .prot_pte = PROT_PTE_DEVICE | L_PTE_MT_DEV_CACHED, .prot_l1 = PMD_TYPE_TABLE, .prot_sect = PROT_SECT_DEVICE | PMD_SECT_WB, .domain = DOMAIN_IO, }, - [MT_DEVICE_IXP2000] = { /* IXP2400 requires XCB=101 for on-chip I/O */ - .prot_pte = PROT_PTE_DEVICE, + [MT_DEVICE_WC] = { /* ioremap_wc */ + .prot_pte = PROT_PTE_DEVICE | L_PTE_MT_DEV_WC, .prot_l1 = PMD_TYPE_TABLE, - .prot_sect = PROT_SECT_DEVICE | PMD_SECT_BUFFERABLE | - PMD_SECT_TEX(1), + .prot_sect = PROT_SECT_DEVICE | PMD_SECT_BUFFERABLE, .domain = DOMAIN_IO, }, [MT_CACHECLEAN] = { @@ -253,7 +250,7 @@ static void __init build_mem_type_table(void) { struct cachepolicy *cp; unsigned int cr = get_cr(); - unsigned int user_pgprot, kern_pgprot; + unsigned int user_pgprot, kern_pgprot, vecs_pgprot; int cpu_arch = cpu_architecture(); int i; @@ -271,6 +268,20 @@ static void __init build_mem_type_table(void) cachepolicy = CPOLICY_WRITEBACK; ecc_mask = 0; } +#ifdef CONFIG_SMP + cachepolicy = CPOLICY_WRITEALLOC; +#endif + + /* + * On non-Xscale3 ARMv5-and-older systems, use CB=01 + * (Uncached/Buffered) for ioremap_wc() mappings. On XScale3 + * and ARMv6+, use TEXCB=00100 mappings (Inner/Outer Uncacheable + * in xsc3 parlance, Uncached Normal in ARMv6 parlance). + */ + if (cpu_is_xsc3() || cpu_arch >= CPU_ARCH_ARMv6) { + mem_types[MT_DEVICE_WC].prot_sect |= PMD_SECT_TEX(1); + mem_types[MT_DEVICE_WC].prot_sect &= ~PMD_SECT_BUFFERABLE; + } /* * ARMv5 and lower, bit 4 must be set for page tables. @@ -292,7 +303,15 @@ static void __init build_mem_type_table(void) } cp = &cache_policies[cachepolicy]; - kern_pgprot = user_pgprot = cp->pte; + vecs_pgprot = kern_pgprot = user_pgprot = cp->pte; + +#ifndef CONFIG_SMP + /* + * Only use write-through for non-SMP systems + */ + if (cpu_arch >= CPU_ARCH_ARMv5 && cachepolicy > CPOLICY_WRITETHROUGH) + vecs_pgprot = cache_policies[CPOLICY_WRITETHROUGH].pte; +#endif /* * Enable CPU-specific coherency if supported. @@ -320,7 +339,6 @@ static void __init build_mem_type_table(void) /* * Mark the device area as "shared device" */ - mem_types[MT_DEVICE].prot_pte |= L_PTE_BUFFERABLE; mem_types[MT_DEVICE].prot_sect |= PMD_SECT_BUFFERED; #ifdef CONFIG_SMP @@ -329,30 +347,21 @@ static void __init build_mem_type_table(void) */ user_pgprot |= L_PTE_SHARED; kern_pgprot |= L_PTE_SHARED; + vecs_pgprot |= L_PTE_SHARED; mem_types[MT_MEMORY].prot_sect |= PMD_SECT_S; #endif } for (i = 0; i < 16; i++) { unsigned long v = pgprot_val(protection_map[i]); - v = (v & ~(L_PTE_BUFFERABLE|L_PTE_CACHEABLE)) | user_pgprot; - protection_map[i] = __pgprot(v); + protection_map[i] = __pgprot(v | user_pgprot); } - mem_types[MT_LOW_VECTORS].prot_pte |= kern_pgprot; - mem_types[MT_HIGH_VECTORS].prot_pte |= kern_pgprot; + mem_types[MT_LOW_VECTORS].prot_pte |= vecs_pgprot; + mem_types[MT_HIGH_VECTORS].prot_pte |= vecs_pgprot; - if (cpu_arch >= CPU_ARCH_ARMv5) { -#ifndef CONFIG_SMP - /* - * Only use write-through for non-SMP systems - */ - mem_types[MT_LOW_VECTORS].prot_pte &= ~L_PTE_BUFFERABLE; - mem_types[MT_HIGH_VECTORS].prot_pte &= ~L_PTE_BUFFERABLE; -#endif - } else { + if (cpu_arch < CPU_ARCH_ARMv5) mem_types[MT_MINICLEAN].prot_sect &= ~PMD_SECT_TEX(1); - } pgprot_user = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | user_pgprot); pgprot_kernel = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | @@ -400,8 +409,7 @@ static void __init alloc_init_pte(pmd_t *pmd, unsigned long addr, pte = pte_offset_kernel(pmd, addr); do { - set_pte_ext(pte, pfn_pte(pfn, __pgprot(type->prot_pte)), - type->prot_pte_ext); + set_pte_ext(pte, pfn_pte(pfn, __pgprot(type->prot_pte)), 0); pfn++; } while (pte++, addr += PAGE_SIZE, addr != end); } @@ -568,12 +576,35 @@ void __init iotable_init(struct map_desc *io_desc, int nr) create_mapping(io_desc + i); } +static unsigned long __initdata vmalloc_reserve = SZ_128M; + +/* + * vmalloc=size forces the vmalloc area to be exactly 'size' + * bytes. This can be used to increase (or decrease) the vmalloc + * area - the default is 128m. + */ +static void __init early_vmalloc(char **arg) +{ + vmalloc_reserve = memparse(*arg, arg); + + if (vmalloc_reserve < SZ_16M) { + vmalloc_reserve = SZ_16M; + printk(KERN_WARNING + "vmalloc area too small, limiting to %luMB\n", + vmalloc_reserve >> 20); + } +} +__early_param("vmalloc=", early_vmalloc); + +#define VMALLOC_MIN (void *)(VMALLOC_END - vmalloc_reserve) + static int __init check_membank_valid(struct membank *mb) { /* - * Check whether this memory region has non-zero size. + * Check whether this memory region has non-zero size or + * invalid node number. */ - if (mb->size == 0) + if (mb->size == 0 || mb->node >= MAX_NUMNODES) return 0; /* @@ -607,8 +638,7 @@ static int __init check_membank_valid(struct membank *mb) static void __init sanity_check_meminfo(struct meminfo *mi) { - int i; - int j; + int i, j; for (i = 0, j = 0; i < mi->nr_banks; i++) { if (check_membank_valid(&mi->bank[i])) diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c index 63c62fdea52..07b62b23897 100644 --- a/arch/arm/mm/nommu.c +++ b/arch/arm/mm/nommu.c @@ -7,16 +7,14 @@ #include <linux/mm.h> #include <linux/pagemap.h> #include <linux/bootmem.h> +#include <linux/io.h> #include <asm/cacheflush.h> -#include <asm/io.h> #include <asm/page.h> #include <asm/mach/arch.h> #include "mm.h" -extern void _stext, __data_start, _end; - /* * Reserve the various regions of node 0 */ @@ -43,12 +41,26 @@ void __init reserve_node_zero(pg_data_t *pgdat) BOOTMEM_DEFAULT); } +static void __init sanity_check_meminfo(struct meminfo *mi) +{ + int i, j; + + for (i = 0, j = 0; i < mi->nr_banks; i++) { + struct membank *mb = &mi->bank[i]; + + if (mb->size != 0 && mb->node < MAX_NUMNODES) + mi->bank[j++] = mi->bank[i]; + } + mi->nr_banks = j; +} + /* * paging_init() sets up the page tables, initialises the zone memory * maps, and sets up the zero page, bad page and bad page tables. */ void __init paging_init(struct meminfo *mi, struct machine_desc *mdesc) { + sanity_check_meminfo(mi); bootmem_init(mi); } diff --git a/arch/arm/mm/proc-arm1020.S b/arch/arm/mm/proc-arm1020.S index 5673f4d6113..b5551bf010a 100644 --- a/arch/arm/mm/proc-arm1020.S +++ b/arch/arm/mm/proc-arm1020.S @@ -29,7 +29,7 @@ #include <linux/init.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/ptrace.h> @@ -399,29 +399,7 @@ ENTRY(cpu_arm1020_switch_mm) .align 5 ENTRY(cpu_arm1020_set_pte_ext) #ifdef CONFIG_MMU - str r1, [r0], #-2048 @ linux version - - eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - bic r2, r1, #PTE_SMALL_AP_MASK - bic r2, r2, #PTE_TYPE_MASK - orr r2, r2, #PTE_TYPE_SMALL - - tst r1, #L_PTE_USER @ User? - orrne r2, r2, #PTE_SMALL_AP_URO_SRW - - tst r1, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty? - orreq r2, r2, #PTE_SMALL_AP_UNO_SRW - - tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young? - movne r2, #0 - -#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH - eor r3, r1, #0x0a @ C & small page? - tst r3, #0x0b - biceq r2, r2, #4 -#endif - str r2, [r0] @ hardware version + armv3_set_pte_ext mov r0, r0 #ifndef CONFIG_CPU_DCACHE_DISABLE mcr p15, 0, r0, c7, c10, 4 diff --git a/arch/arm/mm/proc-arm1020e.S b/arch/arm/mm/proc-arm1020e.S index 4343fdb0e9e..8bc6740c29e 100644 --- a/arch/arm/mm/proc-arm1020e.S +++ b/arch/arm/mm/proc-arm1020e.S @@ -29,7 +29,7 @@ #include <linux/init.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/ptrace.h> @@ -383,29 +383,7 @@ ENTRY(cpu_arm1020e_switch_mm) .align 5 ENTRY(cpu_arm1020e_set_pte_ext) #ifdef CONFIG_MMU - str r1, [r0], #-2048 @ linux version - - eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - bic r2, r1, #PTE_SMALL_AP_MASK - bic r2, r2, #PTE_TYPE_MASK - orr r2, r2, #PTE_TYPE_SMALL - - tst r1, #L_PTE_USER @ User? - orrne r2, r2, #PTE_SMALL_AP_URO_SRW - - tst r1, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty? - orreq r2, r2, #PTE_SMALL_AP_UNO_SRW - - tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young? - movne r2, #0 - -#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH - eor r3, r1, #0x0a @ C & small page? - tst r3, #0x0b - biceq r2, r2, #4 -#endif - str r2, [r0] @ hardware version + armv3_set_pte_ext mov r0, r0 #ifndef CONFIG_CPU_DCACHE_DISABLE mcr p15, 0, r0, c7, c10, 1 @ clean D entry diff --git a/arch/arm/mm/proc-arm1022.S b/arch/arm/mm/proc-arm1022.S index 2a4ea1659e9..2cd03e66c0a 100644 --- a/arch/arm/mm/proc-arm1022.S +++ b/arch/arm/mm/proc-arm1022.S @@ -18,7 +18,7 @@ #include <linux/init.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/ptrace.h> @@ -365,29 +365,7 @@ ENTRY(cpu_arm1022_switch_mm) .align 5 ENTRY(cpu_arm1022_set_pte_ext) #ifdef CONFIG_MMU - str r1, [r0], #-2048 @ linux version - - eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - bic r2, r1, #PTE_SMALL_AP_MASK - bic r2, r2, #PTE_TYPE_MASK - orr r2, r2, #PTE_TYPE_SMALL - - tst r1, #L_PTE_USER @ User? - orrne r2, r2, #PTE_SMALL_AP_URO_SRW - - tst r1, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty? - orreq r2, r2, #PTE_SMALL_AP_UNO_SRW - - tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young? - movne r2, #0 - -#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH - eor r3, r1, #0x0a @ C & small page? - tst r3, #0x0b - biceq r2, r2, #4 -#endif - str r2, [r0] @ hardware version + armv3_set_pte_ext mov r0, r0 #ifndef CONFIG_CPU_DCACHE_DISABLE mcr p15, 0, r0, c7, c10, 1 @ clean D entry diff --git a/arch/arm/mm/proc-arm1026.S b/arch/arm/mm/proc-arm1026.S index 77a1babd421..ad961a897f6 100644 --- a/arch/arm/mm/proc-arm1026.S +++ b/arch/arm/mm/proc-arm1026.S @@ -18,7 +18,7 @@ #include <linux/init.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/ptrace.h> @@ -354,29 +354,7 @@ ENTRY(cpu_arm1026_switch_mm) .align 5 ENTRY(cpu_arm1026_set_pte_ext) #ifdef CONFIG_MMU - str r1, [r0], #-2048 @ linux version - - eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - bic r2, r1, #PTE_SMALL_AP_MASK - bic r2, r2, #PTE_TYPE_MASK - orr r2, r2, #PTE_TYPE_SMALL - - tst r1, #L_PTE_USER @ User? - orrne r2, r2, #PTE_SMALL_AP_URO_SRW - - tst r1, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty? - orreq r2, r2, #PTE_SMALL_AP_UNO_SRW - - tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young? - movne r2, #0 - -#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH - eor r3, r1, #0x0a @ C & small page? - tst r3, #0x0b - biceq r2, r2, #4 -#endif - str r2, [r0] @ hardware version + armv3_set_pte_ext mov r0, r0 #ifndef CONFIG_CPU_DCACHE_DISABLE mcr p15, 0, r0, c7, c10, 1 @ clean D entry diff --git a/arch/arm/mm/proc-arm6_7.S b/arch/arm/mm/proc-arm6_7.S index c371fc87776..80d6e1de069 100644 --- a/arch/arm/mm/proc-arm6_7.S +++ b/arch/arm/mm/proc-arm6_7.S @@ -15,11 +15,13 @@ #include <linux/init.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/ptrace.h> +#include "proc-macros.S" + ENTRY(cpu_arm6_dcache_clean_area) ENTRY(cpu_arm7_dcache_clean_area) mov pc, lr @@ -214,30 +216,13 @@ ENTRY(cpu_arm7_switch_mm) * : r1 = value to set * Purpose : Set a PTE and flush it out of any WB cache */ - .align 5 + .align 5 ENTRY(cpu_arm6_set_pte_ext) ENTRY(cpu_arm7_set_pte_ext) #ifdef CONFIG_MMU - str r1, [r0], #-2048 @ linux version - - eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - bic r2, r1, #PTE_SMALL_AP_MASK - bic r2, r2, #PTE_TYPE_MASK - orr r2, r2, #PTE_TYPE_SMALL - - tst r1, #L_PTE_USER @ User? - orrne r2, r2, #PTE_SMALL_AP_URO_SRW - - tst r1, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty? - orreq r2, r2, #PTE_SMALL_AP_UNO_SRW - - tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young - movne r2, #0 - - str r2, [r0] @ hardware version + armv3_set_pte_ext wc_disable=0 #endif /* CONFIG_MMU */ - mov pc, lr + mov pc, lr /* * Function: _arm6_7_reset diff --git a/arch/arm/mm/proc-arm720.S b/arch/arm/mm/proc-arm720.S index eda733d3045..85ae18695f1 100644 --- a/arch/arm/mm/proc-arm720.S +++ b/arch/arm/mm/proc-arm720.S @@ -36,7 +36,7 @@ #include <linux/init.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/ptrace.h> @@ -93,29 +93,12 @@ ENTRY(cpu_arm720_switch_mm) * : r1 = value to set * Purpose : Set a PTE and flush it out of any WB cache */ - .align 5 + .align 5 ENTRY(cpu_arm720_set_pte_ext) #ifdef CONFIG_MMU - str r1, [r0], #-2048 @ linux version - - eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - bic r2, r1, #PTE_SMALL_AP_MASK - bic r2, r2, #PTE_TYPE_MASK - orr r2, r2, #PTE_TYPE_SMALL - - tst r1, #L_PTE_USER @ User? - orrne r2, r2, #PTE_SMALL_AP_URO_SRW - - tst r1, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty? - orreq r2, r2, #PTE_SMALL_AP_UNO_SRW - - tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young - movne r2, #0 - - str r2, [r0] @ hardware version + armv3_set_pte_ext wc_disable=0 #endif - mov pc, lr + mov pc, lr /* * Function: arm720_reset diff --git a/arch/arm/mm/proc-arm740.S b/arch/arm/mm/proc-arm740.S index 3a57376c8bc..4f95bee63e9 100644 --- a/arch/arm/mm/proc-arm740.S +++ b/arch/arm/mm/proc-arm740.S @@ -12,7 +12,7 @@ #include <linux/init.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/ptrace.h> diff --git a/arch/arm/mm/proc-arm7tdmi.S b/arch/arm/mm/proc-arm7tdmi.S index 7b3ecdeb537..93e05fa7bed 100644 --- a/arch/arm/mm/proc-arm7tdmi.S +++ b/arch/arm/mm/proc-arm7tdmi.S @@ -12,7 +12,7 @@ #include <linux/init.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/ptrace.h> diff --git a/arch/arm/mm/proc-arm920.S b/arch/arm/mm/proc-arm920.S index 28cdb060df4..914d688394f 100644 --- a/arch/arm/mm/proc-arm920.S +++ b/arch/arm/mm/proc-arm920.S @@ -28,7 +28,7 @@ #include <linux/linkage.h> #include <linux/init.h> #include <asm/assembler.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/page.h> @@ -351,33 +351,11 @@ ENTRY(cpu_arm920_switch_mm) .align 5 ENTRY(cpu_arm920_set_pte_ext) #ifdef CONFIG_MMU - str r1, [r0], #-2048 @ linux version - - eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - bic r2, r1, #PTE_SMALL_AP_MASK - bic r2, r2, #PTE_TYPE_MASK - orr r2, r2, #PTE_TYPE_SMALL - - tst r1, #L_PTE_USER @ User? - orrne r2, r2, #PTE_SMALL_AP_URO_SRW - - tst r1, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty? - orreq r2, r2, #PTE_SMALL_AP_UNO_SRW - - tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young? - movne r2, #0 - -#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH - eor r3, r2, #0x0a @ C & small page? - tst r3, #0x0b - biceq r2, r2, #4 -#endif - str r2, [r0] @ hardware version + armv3_set_pte_ext mov r0, r0 mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c10, 4 @ drain WB -#endif /* CONFIG_MMU */ +#endif mov pc, lr __INIT diff --git a/arch/arm/mm/proc-arm922.S b/arch/arm/mm/proc-arm922.S index 94ddcb4a4b7..51c9c9859e5 100644 --- a/arch/arm/mm/proc-arm922.S +++ b/arch/arm/mm/proc-arm922.S @@ -29,7 +29,7 @@ #include <linux/linkage.h> #include <linux/init.h> #include <asm/assembler.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/page.h> @@ -355,29 +355,7 @@ ENTRY(cpu_arm922_switch_mm) .align 5 ENTRY(cpu_arm922_set_pte_ext) #ifdef CONFIG_MMU - str r1, [r0], #-2048 @ linux version - - eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - bic r2, r1, #PTE_SMALL_AP_MASK - bic r2, r2, #PTE_TYPE_MASK - orr r2, r2, #PTE_TYPE_SMALL - - tst r1, #L_PTE_USER @ User? - orrne r2, r2, #PTE_SMALL_AP_URO_SRW - - tst r1, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty? - orreq r2, r2, #PTE_SMALL_AP_UNO_SRW - - tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young? - movne r2, #0 - -#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH - eor r3, r2, #0x0a @ C & small page? - tst r3, #0x0b - biceq r2, r2, #4 -#endif - str r2, [r0] @ hardware version + armv3_set_pte_ext mov r0, r0 mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c10, 4 @ drain WB diff --git a/arch/arm/mm/proc-arm925.S b/arch/arm/mm/proc-arm925.S index d045812f339..2724526d89c 100644 --- a/arch/arm/mm/proc-arm925.S +++ b/arch/arm/mm/proc-arm925.S @@ -52,7 +52,7 @@ #include <linux/linkage.h> #include <linux/init.h> #include <asm/assembler.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/page.h> @@ -398,29 +398,7 @@ ENTRY(cpu_arm925_switch_mm) .align 5 ENTRY(cpu_arm925_set_pte_ext) #ifdef CONFIG_MMU - str r1, [r0], #-2048 @ linux version - - eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - bic r2, r1, #PTE_SMALL_AP_MASK - bic r2, r2, #PTE_TYPE_MASK - orr r2, r2, #PTE_TYPE_SMALL - - tst r1, #L_PTE_USER @ User? - orrne r2, r2, #PTE_SMALL_AP_URO_SRW - - tst r1, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty? - orreq r2, r2, #PTE_SMALL_AP_UNO_SRW - - tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young? - movne r2, #0 - -#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH - eor r3, r2, #0x0a @ C & small page? - tst r3, #0x0b - biceq r2, r2, #4 -#endif - str r2, [r0] @ hardware version + armv3_set_pte_ext mov r0, r0 #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH mcr p15, 0, r0, c7, c10, 1 @ clean D entry diff --git a/arch/arm/mm/proc-arm926.S b/arch/arm/mm/proc-arm926.S index 4cd33169a7c..54466937bff 100644 --- a/arch/arm/mm/proc-arm926.S +++ b/arch/arm/mm/proc-arm926.S @@ -28,7 +28,7 @@ #include <linux/linkage.h> #include <linux/init.h> #include <asm/assembler.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/page.h> @@ -359,29 +359,7 @@ ENTRY(cpu_arm926_switch_mm) .align 5 ENTRY(cpu_arm926_set_pte_ext) #ifdef CONFIG_MMU - str r1, [r0], #-2048 @ linux version - - eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - bic r2, r1, #PTE_SMALL_AP_MASK - bic r2, r2, #PTE_TYPE_MASK - orr r2, r2, #PTE_TYPE_SMALL - - tst r1, #L_PTE_USER @ User? - orrne r2, r2, #PTE_SMALL_AP_URO_SRW - - tst r1, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty? - orreq r2, r2, #PTE_SMALL_AP_UNO_SRW - - tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young? - movne r2, #0 - -#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH - eor r3, r2, #0x0a @ C & small page? - tst r3, #0x0b - biceq r2, r2, #4 -#endif - str r2, [r0] @ hardware version + armv3_set_pte_ext mov r0, r0 #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH mcr p15, 0, r0, c7, c10, 1 @ clean D entry diff --git a/arch/arm/mm/proc-arm940.S b/arch/arm/mm/proc-arm940.S index 551244d5ca1..f595117caf5 100644 --- a/arch/arm/mm/proc-arm940.S +++ b/arch/arm/mm/proc-arm940.S @@ -11,7 +11,7 @@ #include <linux/linkage.h> #include <linux/init.h> #include <asm/assembler.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/ptrace.h> diff --git a/arch/arm/mm/proc-arm946.S b/arch/arm/mm/proc-arm946.S index 6168c6160de..e03f6ff1fb2 100644 --- a/arch/arm/mm/proc-arm946.S +++ b/arch/arm/mm/proc-arm946.S @@ -13,7 +13,7 @@ #include <linux/linkage.h> #include <linux/init.h> #include <asm/assembler.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/ptrace.h> diff --git a/arch/arm/mm/proc-arm9tdmi.S b/arch/arm/mm/proc-arm9tdmi.S index c85c1f50e39..be6c11d2b3f 100644 --- a/arch/arm/mm/proc-arm9tdmi.S +++ b/arch/arm/mm/proc-arm9tdmi.S @@ -12,7 +12,7 @@ #include <linux/init.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/ptrace.h> diff --git a/arch/arm/mm/proc-feroceon.S b/arch/arm/mm/proc-feroceon.S index f2e5884c513..0fe1f8fc348 100644 --- a/arch/arm/mm/proc-feroceon.S +++ b/arch/arm/mm/proc-feroceon.S @@ -22,7 +22,7 @@ #include <linux/linkage.h> #include <linux/init.h> #include <asm/assembler.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> #include <asm/page.h> @@ -80,7 +80,8 @@ ENTRY(cpu_feroceon_proc_fin) msr cpsr_c, ip bl feroceon_flush_kern_cache_all -#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH) +#if defined(CONFIG_CACHE_FEROCEON_L2) && \ + !defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH) mov r0, #0 mcr p15, 1, r0, c15, c9, 0 @ clean L2 mcr p15, 0, r0, c7, c10, 4 @ drain WB @@ -389,7 +390,8 @@ ENTRY(feroceon_range_cache_fns) .align 5 ENTRY(cpu_feroceon_dcache_clean_area) -#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH) +#if defined(CONFIG_CACHE_FEROCEON_L2) && \ + !defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH) mov r2, r0 mov r3, r1 #endif @@ -397,7 +399,8 @@ ENTRY(cpu_feroceon_dcache_clean_area) add r0, r0, #CACHE_DLINESIZE subs r1, r1, #CACHE_DLINESIZE bhi 1b -#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH) +#if defined(CONFIG_CACHE_FEROCEON_L2) && \ + !defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH) 1: mcr p15, 1, r2, c15, c9, 1 @ clean L2 entry add r2, r2, #CACHE_DLINESIZE subs r3, r3, #CACHE_DLINESIZE @@ -446,27 +449,11 @@ ENTRY(cpu_feroceon_switch_mm) .align 5 ENTRY(cpu_feroceon_set_pte_ext) #ifdef CONFIG_MMU - str r1, [r0], #-2048 @ linux version - - eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - bic r2, r1, #PTE_SMALL_AP_MASK - bic r2, r2, #PTE_TYPE_MASK - orr r2, r2, #PTE_TYPE_SMALL - - tst r1, #L_PTE_USER @ User? - orrne r2, r2, #PTE_SMALL_AP_URO_SRW - - tst r1, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty? - orreq r2, r2, #PTE_SMALL_AP_UNO_SRW - - tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young? - movne r2, #0 - - str r2, [r0] @ hardware version + armv3_set_pte_ext wc_disable=0 mov r0, r0 mcr p15, 0, r0, c7, c10, 1 @ clean D entry -#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH) +#if defined(CONFIG_CACHE_FEROCEON_L2) && \ + !defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH) mcr p15, 1, r0, c15, c9, 1 @ clean L2 entry #endif mcr p15, 0, r0, c7, c10, 4 @ drain WB diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S index b13150052a7..54b1f721dec 100644 --- a/arch/arm/mm/proc-macros.S +++ b/arch/arm/mm/proc-macros.S @@ -71,3 +71,173 @@ mov \reg, #16 @ size offset mov \reg, \reg, lsl \tmp @ actual cache line size .endm + + +/* + * Sanity check the PTE configuration for the code below - which makes + * certain assumptions about how these bits are layed out. + */ +#if L_PTE_SHARED != PTE_EXT_SHARED +#error PTE shared bit mismatch +#endif +#if L_PTE_BUFFERABLE != PTE_BUFFERABLE +#error PTE bufferable bit mismatch +#endif +#if L_PTE_CACHEABLE != PTE_CACHEABLE +#error PTE cacheable bit mismatch +#endif +#if (L_PTE_EXEC+L_PTE_USER+L_PTE_WRITE+L_PTE_DIRTY+L_PTE_YOUNG+\ + L_PTE_FILE+L_PTE_PRESENT) > L_PTE_SHARED +#error Invalid Linux PTE bit settings +#endif + +/* + * The ARMv6 and ARMv7 set_pte_ext translation function. + * + * Permission translation: + * YUWD APX AP1 AP0 SVC User + * 0xxx 0 0 0 no acc no acc + * 100x 1 0 1 r/o no acc + * 10x0 1 0 1 r/o no acc + * 1011 0 0 1 r/w no acc + * 110x 0 1 0 r/w r/o + * 11x0 0 1 0 r/w r/o + * 1111 0 1 1 r/w r/w + */ + .macro armv6_mt_table pfx +\pfx\()_mt_table: + .long 0x00 @ L_PTE_MT_UNCACHED + .long PTE_EXT_TEX(1) @ L_PTE_MT_BUFFERABLE + .long PTE_CACHEABLE @ L_PTE_MT_WRITETHROUGH + .long PTE_CACHEABLE | PTE_BUFFERABLE @ L_PTE_MT_WRITEBACK + .long PTE_BUFFERABLE @ L_PTE_MT_DEV_SHARED + .long 0x00 @ unused + .long 0x00 @ L_PTE_MT_MINICACHE (not present) + .long PTE_EXT_TEX(1) | PTE_CACHEABLE | PTE_BUFFERABLE @ L_PTE_MT_WRITEALLOC + .long 0x00 @ unused + .long PTE_EXT_TEX(1) @ L_PTE_MT_DEV_WC + .long 0x00 @ unused + .long PTE_CACHEABLE | PTE_BUFFERABLE @ L_PTE_MT_DEV_CACHED + .long PTE_EXT_TEX(2) @ L_PTE_MT_DEV_NONSHARED + .long 0x00 @ unused + .long 0x00 @ unused + .long 0x00 @ unused + .endm + + .macro armv6_set_pte_ext pfx + str r1, [r0], #-2048 @ linux version + + bic r3, r1, #0x000003fc + bic r3, r3, #PTE_TYPE_MASK + orr r3, r3, r2 + orr r3, r3, #PTE_EXT_AP0 | 2 + + adr ip, \pfx\()_mt_table + and r2, r1, #L_PTE_MT_MASK + ldr r2, [ip, r2] + + tst r1, #L_PTE_WRITE + tstne r1, #L_PTE_DIRTY + orreq r3, r3, #PTE_EXT_APX + + tst r1, #L_PTE_USER + orrne r3, r3, #PTE_EXT_AP1 + tstne r3, #PTE_EXT_APX + bicne r3, r3, #PTE_EXT_APX | PTE_EXT_AP0 + + tst r1, #L_PTE_EXEC + orreq r3, r3, #PTE_EXT_XN + + orr r3, r3, r2 + + tst r1, #L_PTE_YOUNG + tstne r1, #L_PTE_PRESENT + moveq r3, #0 + + str r3, [r0] + mcr p15, 0, r0, c7, c10, 1 @ flush_pte + .endm + + +/* + * The ARMv3, ARMv4 and ARMv5 set_pte_ext translation function, + * covering most CPUs except Xscale and Xscale 3. + * + * Permission translation: + * YUWD AP SVC User + * 0xxx 0x00 no acc no acc + * 100x 0x00 r/o no acc + * 10x0 0x00 r/o no acc + * 1011 0x55 r/w no acc + * 110x 0xaa r/w r/o + * 11x0 0xaa r/w r/o + * 1111 0xff r/w r/w + */ + .macro armv3_set_pte_ext wc_disable=1 + str r1, [r0], #-2048 @ linux version + + eor r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY + + bic r2, r1, #PTE_SMALL_AP_MASK @ keep C, B bits + bic r2, r2, #PTE_TYPE_MASK + orr r2, r2, #PTE_TYPE_SMALL + + tst r3, #L_PTE_USER @ user? + orrne r2, r2, #PTE_SMALL_AP_URO_SRW + + tst r3, #L_PTE_WRITE | L_PTE_DIRTY @ write and dirty? + orreq r2, r2, #PTE_SMALL_AP_UNO_SRW + + tst r3, #L_PTE_PRESENT | L_PTE_YOUNG @ present and young? + movne r2, #0 + + .if \wc_disable +#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH + tst r2, #PTE_CACHEABLE + bicne r2, r2, #PTE_BUFFERABLE +#endif + .endif + str r2, [r0] @ hardware version + .endm + + +/* + * Xscale set_pte_ext translation, split into two halves to cope + * with work-arounds. r3 must be preserved by code between these + * two macros. + * + * Permission translation: + * YUWD AP SVC User + * 0xxx 00 no acc no acc + * 100x 00 r/o no acc + * 10x0 00 r/o no acc + * 1011 01 r/w no acc + * 110x 10 r/w r/o + * 11x0 10 r/w r/o + * 1111 11 r/w r/w + */ + .macro xscale_set_pte_ext_prologue + str r1, [r0], #-2048 @ linux version + + eor r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY + + bic r2, r1, #PTE_SMALL_AP_MASK @ keep C, B bits + orr r2, r2, #PTE_TYPE_EXT @ extended page + + tst r3, #L_PTE_USER @ user? + orrne r2, r2, #PTE_EXT_AP_URO_SRW @ yes -> user r/o, system r/w + + tst r3, #L_PTE_WRITE | L_PTE_DIRTY @ write and dirty? + orreq r2, r2, #PTE_EXT_AP_UNO_SRW @ yes -> user n/a, system r/w + @ combined with user -> user r/w + .endm + + .macro xscale_set_pte_ext_epilogue + tst r3, #L_PTE_PRESENT | L_PTE_YOUNG @ present and young? + movne r2, #0 @ no -> fault + + str r2, [r0] @ hardware version + mov ip, #0 + mcr p15, 0, r0, c7, c10, 1 @ clean L1 D line + mcr p15, 0, ip, c7, c10, 4 @ data write barrier + .endm diff --git a/arch/arm/mm/proc-sa110.S b/arch/arm/mm/proc-sa110.S index bbe10576c86..90a7e5279f2 100644 --- a/arch/arm/mm/proc-sa110.S +++ b/arch/arm/mm/proc-sa110.S @@ -17,7 +17,7 @@ #include <linux/init.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <mach/hardware.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> @@ -153,24 +153,7 @@ ENTRY(cpu_sa110_switch_mm) .align 5 ENTRY(cpu_sa110_set_pte_ext) #ifdef CONFIG_MMU - str r1, [r0], #-2048 @ linux version - - eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - bic r2, r1, #PTE_SMALL_AP_MASK - bic r2, r2, #PTE_TYPE_MASK - orr r2, r2, #PTE_TYPE_SMALL - - tst r1, #L_PTE_USER @ User? - orrne r2, r2, #PTE_SMALL_AP_URO_SRW - - tst r1, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty? - orreq r2, r2, #PTE_SMALL_AP_UNO_SRW - - tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young? - movne r2, #0 - - str r2, [r0] @ hardware version + armv3_set_pte_ext wc_disable=0 mov r0, r0 mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c10, 4 @ drain WB diff --git a/arch/arm/mm/proc-sa1100.S b/arch/arm/mm/proc-sa1100.S index 871ba018252..451e2d953e2 100644 --- a/arch/arm/mm/proc-sa1100.S +++ b/arch/arm/mm/proc-sa1100.S @@ -22,7 +22,7 @@ #include <linux/init.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <mach/hardware.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> @@ -166,24 +166,7 @@ ENTRY(cpu_sa1100_switch_mm) .align 5 ENTRY(cpu_sa1100_set_pte_ext) #ifdef CONFIG_MMU - str r1, [r0], #-2048 @ linux version - - eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - bic r2, r1, #PTE_SMALL_AP_MASK - bic r2, r2, #PTE_TYPE_MASK - orr r2, r2, #PTE_TYPE_SMALL - - tst r1, #L_PTE_USER @ User? - orrne r2, r2, #PTE_SMALL_AP_URO_SRW - - tst r1, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty? - orreq r2, r2, #PTE_SMALL_AP_UNO_SRW - - tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young? - movne r2, #0 - - str r2, [r0] @ hardware version + armv3_set_pte_ext wc_disable=0 mov r0, r0 mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c10, 4 @ drain WB diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S index 5702ec58b2a..294943b8597 100644 --- a/arch/arm/mm/proc-v6.S +++ b/arch/arm/mm/proc-v6.S @@ -13,7 +13,7 @@ #include <linux/linkage.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> @@ -114,46 +114,12 @@ ENTRY(cpu_v6_switch_mm) * (hardware version is stored at -1024 bytes) * - pte - PTE value to store * - ext - value for extended PTE bits - * - * Permissions: - * YUWD APX AP1 AP0 SVC User - * 0xxx 0 0 0 no acc no acc - * 100x 1 0 1 r/o no acc - * 10x0 1 0 1 r/o no acc - * 1011 0 0 1 r/w no acc - * 110x 0 1 0 r/w r/o - * 11x0 0 1 0 r/w r/o - * 1111 0 1 1 r/w r/w */ + armv6_mt_table cpu_v6 + ENTRY(cpu_v6_set_pte_ext) #ifdef CONFIG_MMU - str r1, [r0], #-2048 @ linux version - - bic r3, r1, #0x000003f0 - bic r3, r3, #0x00000003 - orr r3, r3, r2 - orr r3, r3, #PTE_EXT_AP0 | 2 - - tst r1, #L_PTE_WRITE - tstne r1, #L_PTE_DIRTY - orreq r3, r3, #PTE_EXT_APX - - tst r1, #L_PTE_USER - orrne r3, r3, #PTE_EXT_AP1 - tstne r3, #PTE_EXT_APX - bicne r3, r3, #PTE_EXT_APX | PTE_EXT_AP0 - - tst r1, #L_PTE_YOUNG - biceq r3, r3, #PTE_EXT_APX | PTE_EXT_AP_MASK - - tst r1, #L_PTE_EXEC - orreq r3, r3, #PTE_EXT_XN - - tst r1, #L_PTE_PRESENT - moveq r3, #0 - - str r3, [r0] - mcr p15, 0, r0, c7, c10, 1 @ flush_pte + armv6_set_pte_ext cpu_v6 #endif mov pc, lr diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index b49f9a4c82c..34e42404192 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -12,7 +12,7 @@ #include <linux/linkage.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> #include <asm/pgtable.h> @@ -25,9 +25,11 @@ ENTRY(cpu_v7_proc_init) mov pc, lr +ENDPROC(cpu_v7_proc_init) ENTRY(cpu_v7_proc_fin) mov pc, lr +ENDPROC(cpu_v7_proc_fin) /* * cpu_v7_reset(loc) @@ -43,6 +45,7 @@ ENTRY(cpu_v7_proc_fin) .align 5 ENTRY(cpu_v7_reset) mov pc, r0 +ENDPROC(cpu_v7_reset) /* * cpu_v7_do_idle() @@ -52,8 +55,9 @@ ENTRY(cpu_v7_reset) * IRQs are already disabled. */ ENTRY(cpu_v7_do_idle) - .long 0xe320f003 @ ARM V7 WFI instruction + wfi mov pc, lr +ENDPROC(cpu_v7_do_idle) ENTRY(cpu_v7_dcache_clean_area) #ifndef TLB_CAN_READ_FROM_L1_CACHE @@ -65,6 +69,7 @@ ENTRY(cpu_v7_dcache_clean_area) dsb #endif mov pc, lr +ENDPROC(cpu_v7_dcache_clean_area) /* * cpu_v7_switch_mm(pgd_phys, tsk) @@ -89,6 +94,7 @@ ENTRY(cpu_v7_switch_mm) isb #endif mov pc, lr +ENDPROC(cpu_v7_switch_mm) /* * cpu_v7_set_pte_ext(ptep, pte) @@ -99,26 +105,19 @@ ENTRY(cpu_v7_switch_mm) * (hardware version is stored at -1024 bytes) * - pte - PTE value to store * - ext - value for extended PTE bits - * - * Permissions: - * YUWD APX AP1 AP0 SVC User - * 0xxx 0 0 0 no acc no acc - * 100x 1 0 1 r/o no acc - * 10x0 1 0 1 r/o no acc - * 1011 0 0 1 r/w no acc - * 110x 0 1 0 r/w r/o - * 11x0 0 1 0 r/w r/o - * 1111 0 1 1 r/w r/w */ ENTRY(cpu_v7_set_pte_ext) #ifdef CONFIG_MMU str r1, [r0], #-2048 @ linux version bic r3, r1, #0x000003f0 - bic r3, r3, #0x00000003 + bic r3, r3, #PTE_TYPE_MASK orr r3, r3, r2 orr r3, r3, #PTE_EXT_AP0 | 2 + tst r2, #1 << 4 + orrne r3, r3, #PTE_EXT_TEX(1) + tst r1, #L_PTE_WRITE tstne r1, #L_PTE_DIRTY orreq r3, r3, #PTE_EXT_APX @@ -128,19 +127,18 @@ ENTRY(cpu_v7_set_pte_ext) tstne r3, #PTE_EXT_APX bicne r3, r3, #PTE_EXT_APX | PTE_EXT_AP0 - tst r1, #L_PTE_YOUNG - biceq r3, r3, #PTE_EXT_APX | PTE_EXT_AP_MASK - tst r1, #L_PTE_EXEC orreq r3, r3, #PTE_EXT_XN - tst r1, #L_PTE_PRESENT + tst r1, #L_PTE_YOUNG + tstne r1, #L_PTE_PRESENT moveq r3, #0 str r3, [r0] mcr p15, 0, r0, c7, c10, 1 @ flush_pte #endif mov pc, lr +ENDPROC(cpu_v7_set_pte_ext) cpu_v7_name: .ascii "ARMv7 Processor" @@ -182,12 +180,17 @@ __v7_setup: mov r10, #0x1f @ domains 0, 1 = manager mcr p15, 0, r10, c3, c0, 0 @ load domain access register #endif + ldr r5, =0x40e040e0 + ldr r6, =0xff0aa1a8 + mcr p15, 0, r5, c10, c2, 0 @ write PRRR + mcr p15, 0, r6, c10, c2, 1 @ write NMRR adr r5, v7_crval ldmia r5, {r5, r6} mrc p15, 0, r0, c1, c0, 0 @ read control register bic r0, r0, r5 @ clear bits them orr r0, r0, r6 @ set them mov pc, lr @ return to head.S:__ret +ENDPROC(__v7_setup) /* * V X F I D LR @@ -197,7 +200,7 @@ __v7_setup: */ .type v7_crval, #object v7_crval: - crval clear=0x0120c302, mmuset=0x00c0387d, ucset=0x00c0187c + crval clear=0x0120c302, mmuset=0x10c0387d, ucset=0x00c0187c __v7_setup_stack: .space 4 * 11 @ 11 registers diff --git a/arch/arm/mm/proc-xsc3.S b/arch/arm/mm/proc-xsc3.S index 7bd9e7197f6..04dc8b65401 100644 --- a/arch/arm/mm/proc-xsc3.S +++ b/arch/arm/mm/proc-xsc3.S @@ -27,7 +27,7 @@ #include <linux/linkage.h> #include <linux/init.h> #include <asm/assembler.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <mach/hardware.h> #include <asm/pgtable.h> #include <asm/pgtable-hwdef.h> @@ -345,38 +345,38 @@ ENTRY(cpu_xsc3_switch_mm) * cpu_xsc3_set_pte_ext(ptep, pte, ext) * * Set a PTE and flush it out - * */ +cpu_xsc3_mt_table: + .long 0x00 @ L_PTE_MT_UNCACHED + .long PTE_EXT_TEX(1) @ L_PTE_MT_BUFFERABLE + .long PTE_CACHEABLE @ L_PTE_MT_WRITETHROUGH + .long PTE_CACHEABLE | PTE_BUFFERABLE @ L_PTE_MT_WRITEBACK + .long PTE_EXT_TEX(1) | PTE_BUFFERABLE @ L_PTE_MT_DEV_SHARED + .long 0x00 @ unused + .long 0x00 @ L_PTE_MT_MINICACHE (not present) + .long PTE_EXT_TEX(5) | PTE_CACHEABLE | PTE_BUFFERABLE @ L_PTE_MT_WRITEALLOC (not present?) + .long 0x00 @ unused + .long PTE_EXT_TEX(1) @ L_PTE_MT_DEV_WC + .long 0x00 @ unused + .long PTE_CACHEABLE | PTE_BUFFERABLE @ L_PTE_MT_DEV_CACHED + .long PTE_EXT_TEX(2) @ L_PTE_MT_DEV_NONSHARED + .long 0x00 @ unused + .long 0x00 @ unused + .long 0x00 @ unused + .align 5 ENTRY(cpu_xsc3_set_pte_ext) - str r1, [r0], #-2048 @ linux version + xscale_set_pte_ext_prologue - bic r2, r1, #0xff0 @ keep C, B bits - orr r2, r2, #PTE_TYPE_EXT @ extended page tst r1, #L_PTE_SHARED @ shared? - orrne r2, r2, #0x200 - - eor r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - tst r3, #L_PTE_USER @ user? - orrne r2, r2, #PTE_EXT_AP_URO_SRW @ yes -> user r/o, system r/w - - tst r3, #L_PTE_WRITE | L_PTE_DIRTY @ write and dirty? - orreq r2, r2, #PTE_EXT_AP_UNO_SRW @ yes -> user n/a, system r/w - @ combined with user -> user r/w - - @ If it's cacheable, it needs to be in L2 also. - eor ip, r1, #L_PTE_CACHEABLE - tst ip, #L_PTE_CACHEABLE - orreq r2, r2, #PTE_EXT_TEX(0x5) - - tst r3, #L_PTE_PRESENT | L_PTE_YOUNG @ present and young? - movne r2, #0 @ no -> fault - - str r2, [r0] @ hardware version - mov ip, #0 - mcr p15, 0, r0, c7, c10, 1 @ clean L1 D line - mcr p15, 0, ip, c7, c10, 4 @ data write barrier + and r1, r1, #L_PTE_MT_MASK + adr ip, cpu_xsc3_mt_table + ldr ip, [ip, r1] + orrne r2, r2, #PTE_EXT_COHERENT @ interlock: mask in coherent bit + bic r2, r2, #0x0c @ clear old C,B bits + orr r2, r2, ip + + xscale_set_pte_ext_epilogue mov pc, lr .ltorg diff --git a/arch/arm/mm/proc-xscale.S b/arch/arm/mm/proc-xscale.S index 2dd85273976..0cce37b9393 100644 --- a/arch/arm/mm/proc-xscale.S +++ b/arch/arm/mm/proc-xscale.S @@ -23,7 +23,7 @@ #include <linux/linkage.h> #include <linux/init.h> #include <asm/assembler.h> -#include <asm/elf.h> +#include <asm/hwcap.h> #include <asm/pgtable.h> #include <asm/pgtable-hwdef.h> #include <asm/page.h> @@ -406,8 +406,6 @@ ENTRY(cpu_xscale_dcache_clean_area) /* =============================== PageTable ============================== */ -#define PTE_CACHE_WRITE_ALLOCATE 0 - /* * cpu_xscale_switch_mm(pgd) * @@ -431,56 +429,42 @@ ENTRY(cpu_xscale_switch_mm) * * Errata 40: must set memory to write-through for user read-only pages. */ +cpu_xscale_mt_table: + .long 0x00 @ L_PTE_MT_UNCACHED + .long PTE_BUFFERABLE @ L_PTE_MT_BUFFERABLE + .long PTE_CACHEABLE @ L_PTE_MT_WRITETHROUGH + .long PTE_CACHEABLE | PTE_BUFFERABLE @ L_PTE_MT_WRITEBACK + .long PTE_EXT_TEX(1) | PTE_BUFFERABLE @ L_PTE_MT_DEV_SHARED + .long 0x00 @ unused + .long PTE_EXT_TEX(1) | PTE_CACHEABLE @ L_PTE_MT_MINICACHE + .long PTE_EXT_TEX(1) | PTE_CACHEABLE | PTE_BUFFERABLE @ L_PTE_MT_WRITEALLOC + .long 0x00 @ unused + .long PTE_BUFFERABLE @ L_PTE_MT_DEV_WC + .long 0x00 @ unused + .long PTE_CACHEABLE | PTE_BUFFERABLE @ L_PTE_MT_DEV_CACHED + .long 0x00 @ L_PTE_MT_DEV_NONSHARED + .long 0x00 @ unused + .long 0x00 @ unused + .long 0x00 @ unused + .align 5 ENTRY(cpu_xscale_set_pte_ext) - str r1, [r0], #-2048 @ linux version - - bic r2, r1, #0xff0 - orr r2, r2, #PTE_TYPE_EXT @ extended page - - eor r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - tst r3, #L_PTE_USER @ User? - orrne r2, r2, #PTE_EXT_AP_URO_SRW @ yes -> user r/o, system r/w - - tst r3, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty? - orreq r2, r2, #PTE_EXT_AP_UNO_SRW @ yes -> user n/a, system r/w - @ combined with user -> user r/w - - @ - @ Handle the X bit. We want to set this bit for the minicache - @ (U = E = B = W = 0, C = 1) or when write allocate is enabled, - @ and we have a writeable, cacheable region. If we ignore the - @ U and E bits, we can allow user space to use the minicache as - @ well. - @ - @ X = (C & ~W & ~B) | (C & W & B & write_allocate) - @ - eor ip, r1, #L_PTE_CACHEABLE - tst ip, #L_PTE_CACHEABLE | L_PTE_WRITE | L_PTE_BUFFERABLE -#if PTE_CACHE_WRITE_ALLOCATE - eorne ip, r1, #L_PTE_CACHEABLE | L_PTE_WRITE | L_PTE_BUFFERABLE - tstne ip, #L_PTE_CACHEABLE | L_PTE_WRITE | L_PTE_BUFFERABLE -#endif - orreq r2, r2, #PTE_EXT_TEX(1) + xscale_set_pte_ext_prologue @ - @ Erratum 40: The B bit must be cleared for a user read-only - @ cacheable page. - @ - @ B = B & ~(U & C & ~W) + @ Erratum 40: must set memory to write-through for user read-only pages @ - and ip, r1, #L_PTE_USER | L_PTE_WRITE | L_PTE_CACHEABLE - teq ip, #L_PTE_USER | L_PTE_CACHEABLE - biceq r2, r2, #PTE_BUFFERABLE + and ip, r1, #(L_PTE_MT_MASK | L_PTE_USER | L_PTE_WRITE) & ~(4 << 2) + teq ip, #L_PTE_MT_WRITEBACK | L_PTE_USER - tst r3, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young? - movne r2, #0 @ no -> fault + moveq r1, #L_PTE_MT_WRITETHROUGH + and r1, r1, #L_PTE_MT_MASK + adr ip, cpu_xscale_mt_table + ldr ip, [ip, r1] + bic r2, r2, #0x0c + orr r2, r2, ip - str r2, [r0] @ hardware version - mov ip, #0 - mcr p15, 0, r0, c7, c10, 1 @ Clean D cache line - mcr p15, 0, ip, c7, c10, 4 @ Drain Write (& Fill) Buffer + xscale_set_pte_ext_epilogue mov pc, lr diff --git a/arch/arm/mm/tlb-v7.S b/arch/arm/mm/tlb-v7.S index b56dda8052f..24ba5109f2e 100644 --- a/arch/arm/mm/tlb-v7.S +++ b/arch/arm/mm/tlb-v7.S @@ -51,6 +51,7 @@ ENTRY(v7wbi_flush_user_tlb_range) mcr p15, 0, ip, c7, c5, 6 @ flush BTAC/BTB dsb mov pc, lr +ENDPROC(v7wbi_flush_user_tlb_range) /* * v7wbi_flush_kern_tlb_range(start,end) @@ -77,6 +78,7 @@ ENTRY(v7wbi_flush_kern_tlb_range) dsb isb mov pc, lr +ENDPROC(v7wbi_flush_kern_tlb_range) .section ".text.init", #alloc, #execinstr |