diff options
Diffstat (limited to 'arch/arm/mm')
| -rw-r--r-- | arch/arm/mm/flush.c | 7 | ||||
| -rw-r--r-- | arch/arm/mm/init.c | 50 | ||||
| -rw-r--r-- | arch/arm/mm/proc-v6.S | 34 |
3 files changed, 52 insertions, 39 deletions
diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c index 2b269c955524..1a8d4aa821be 100644 --- a/arch/arm/mm/flush.c +++ b/arch/arm/mm/flush.c @@ -253,8 +253,8 @@ void __sync_icache_dcache(pte_t pteval) if (!test_and_set_bit(PG_dcache_clean, &page->flags)) __flush_dcache_page(mapping, page); - /* pte_exec() already checked above for non-aliasing VIPT cache */ - if (cache_is_vipt_nonaliasing() || pte_exec(pteval)) + + if (pte_exec(pteval)) __flush_icache_all(); } #endif @@ -275,7 +275,8 @@ void __sync_icache_dcache(pte_t pteval) * kernel cache lines for later. Otherwise, we assume we have * aliasing mappings. * - * Note that we disable the lazy flush for SMP. + * Note that we disable the lazy flush for SMP configurations where + * the cache maintenance operations are not automatically broadcasted. */ void flush_dcache_page(struct page *page) { diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index e5f6fc428348..751767279b3e 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -15,12 +15,14 @@ #include <linux/mman.h> #include <linux/nodemask.h> #include <linux/initrd.h> +#include <linux/of_fdt.h> #include <linux/highmem.h> #include <linux/gfp.h> #include <linux/memblock.h> #include <linux/sort.h> #include <asm/mach-types.h> +#include <asm/prom.h> #include <asm/sections.h> #include <asm/setup.h> #include <asm/sizes.h> @@ -71,6 +73,14 @@ static int __init parse_tag_initrd2(const struct tag *tag) __tagtable(ATAG_INITRD2, parse_tag_initrd2); +#ifdef CONFIG_OF_FLATTREE +void __init early_init_dt_setup_initrd_arch(unsigned long start, unsigned long end) +{ + phys_initrd_start = start; + phys_initrd_size = end - start; +} +#endif /* CONFIG_OF_FLATTREE */ + /* * This keeps memory configuration data used by a couple memory * initialization functions, as well as show_mem() for the skipping @@ -201,6 +211,20 @@ static void __init arm_bootmem_init(unsigned long start_pfn, } } +#ifdef CONFIG_ZONE_DMA +static void __init arm_adjust_dma_zone(unsigned long *size, unsigned long *hole, + unsigned long dma_size) +{ + if (size[0] <= dma_size) + return; + + size[ZONE_NORMAL] = size[0] - dma_size; + size[ZONE_DMA] = dma_size; + hole[ZONE_NORMAL] = hole[0]; + hole[ZONE_DMA] = 0; +} +#endif + static void __init arm_bootmem_free(unsigned long min, unsigned long max_low, unsigned long max_high) { @@ -243,11 +267,18 @@ static void __init arm_bootmem_free(unsigned long min, unsigned long max_low, #endif } +#ifdef ARM_DMA_ZONE_SIZE +#ifndef CONFIG_ZONE_DMA +#error ARM_DMA_ZONE_SIZE set but no DMA zone to limit allocations +#endif + /* * Adjust the sizes according to any special requirements for * this machine type. */ - arch_adjust_zones(zone_size, zhole_size); + arm_adjust_dma_zone(zone_size, zhole_size, + ARM_DMA_ZONE_SIZE >> PAGE_SHIFT); +#endif free_area_init_node(0, zone_size, min, zhole_size); } @@ -313,6 +344,7 @@ void __init arm_memblock_init(struct meminfo *mi, struct machine_desc *mdesc) #endif arm_mm_memblock_reserve(); + arm_dt_memblock_reserve(); /* reserve any platform specific memblock areas */ if (mdesc->reserve) @@ -392,7 +424,7 @@ free_memmap(unsigned long start_pfn, unsigned long end_pfn) * Convert start_pfn/end_pfn to a struct page pointer. */ start_pg = pfn_to_page(start_pfn - 1) + 1; - end_pg = pfn_to_page(end_pfn); + end_pg = pfn_to_page(end_pfn - 1) + 1; /* * Convert to physical addresses, and @@ -426,6 +458,14 @@ static void __init free_unused_memmap(struct meminfo *mi) bank_start = bank_pfn_start(bank); +#ifdef CONFIG_SPARSEMEM + /* + * Take care not to free memmap entries that don't exist + * due to SPARSEMEM sections which aren't present. + */ + bank_start = min(bank_start, + ALIGN(prev_bank_end, PAGES_PER_SECTION)); +#endif /* * If we had a previous bank, and there is a space * between the current bank and the previous, free it. @@ -440,6 +480,12 @@ static void __init free_unused_memmap(struct meminfo *mi) */ prev_bank_end = ALIGN(bank_pfn_end(bank), MAX_ORDER_NR_PAGES); } + +#ifdef CONFIG_SPARSEMEM + if (!IS_ALIGNED(prev_bank_end, PAGES_PER_SECTION)) + free_memmap(prev_bank_end, + ALIGN(prev_bank_end, PAGES_PER_SECTION)); +#endif } static void __init free_highpages(void) diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S index 7c99cb4c8e4f..ab17cc0d3fa7 100644 --- a/arch/arm/mm/proc-v6.S +++ b/arch/arm/mm/proc-v6.S @@ -175,11 +175,6 @@ cpu_v6_name: .asciz "ARMv6-compatible processor" .size cpu_v6_name, . - cpu_v6_name - .type cpu_pj4_name, #object -cpu_pj4_name: - .asciz "Marvell PJ4 processor" - .size cpu_pj4_name, . - cpu_pj4_name - .align __CPUINIT @@ -305,32 +300,3 @@ __v6_proc_info: .long v6_user_fns .long v6_cache_fns .size __v6_proc_info, . - __v6_proc_info - - .type __pj4_v6_proc_info, #object -__pj4_v6_proc_info: - .long 0x560f5810 - .long 0xff0ffff0 - ALT_SMP(.long \ - PMD_TYPE_SECT | \ - PMD_SECT_AP_WRITE | \ - PMD_SECT_AP_READ | \ - PMD_FLAGS_SMP) - ALT_UP(.long \ - PMD_TYPE_SECT | \ - PMD_SECT_AP_WRITE | \ - PMD_SECT_AP_READ | \ - PMD_FLAGS_UP) - .long PMD_TYPE_SECT | \ - PMD_SECT_XN | \ - PMD_SECT_AP_WRITE | \ - PMD_SECT_AP_READ - b __v6_setup - .long cpu_arch_name - .long cpu_elf_name - .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP|HWCAP_TLS - .long cpu_pj4_name - .long v6_processor_functions - .long v6wbi_tlb_fns - .long v6_user_fns - .long v6_cache_fns - .size __pj4_v6_proc_info, . - __pj4_v6_proc_info |
