From 863981e96738983919de841ec669e157e6bdaeb0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Sun, 11 Sep 2016 04:34:46 -0300 Subject: Linux-libre 4.7.1-gnu --- arch/x86/platform/efi/efi.c | 133 +++++++++++++++++------------------- arch/x86/platform/efi/efi_64.c | 12 ++-- arch/x86/platform/efi/efi_stub_64.S | 9 ++- arch/x86/platform/efi/quirks.c | 12 ++-- 4 files changed, 75 insertions(+), 91 deletions(-) (limited to 'arch/x86/platform/efi') diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 994a7df84..f93545e7d 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -54,10 +54,6 @@ #include #include -#define EFI_DEBUG - -struct efi_memory_map memmap; - static struct efi efi_phys __initdata; static efi_system_table_t efi_systab __initdata; @@ -119,11 +115,10 @@ void efi_get_time(struct timespec *now) void __init efi_find_mirror(void) { - void *p; + efi_memory_desc_t *md; u64 mirror_size = 0, total_size = 0; - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { - efi_memory_desc_t *md = p; + for_each_efi_memory_desc(md) { unsigned long long start = md->phys_addr; unsigned long long size = md->num_pages << EFI_PAGE_SHIFT; @@ -146,10 +141,9 @@ void __init efi_find_mirror(void) static void __init do_add_efi_memmap(void) { - void *p; + efi_memory_desc_t *md; - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { - efi_memory_desc_t *md = p; + for_each_efi_memory_desc(md) { unsigned long long start = md->phys_addr; unsigned long long size = md->num_pages << EFI_PAGE_SHIFT; int e820_type; @@ -209,47 +203,47 @@ int __init efi_memblock_x86_reserve_range(void) #else pmap = (e->efi_memmap | ((__u64)e->efi_memmap_hi << 32)); #endif - memmap.phys_map = pmap; - memmap.nr_map = e->efi_memmap_size / + efi.memmap.phys_map = pmap; + efi.memmap.nr_map = e->efi_memmap_size / e->efi_memdesc_size; - memmap.desc_size = e->efi_memdesc_size; - memmap.desc_version = e->efi_memdesc_version; + efi.memmap.desc_size = e->efi_memdesc_size; + efi.memmap.desc_version = e->efi_memdesc_version; - memblock_reserve(pmap, memmap.nr_map * memmap.desc_size); + WARN(efi.memmap.desc_version != 1, + "Unexpected EFI_MEMORY_DESCRIPTOR version %ld", + efi.memmap.desc_version); - efi.memmap = &memmap; + memblock_reserve(pmap, efi.memmap.nr_map * efi.memmap.desc_size); return 0; } void __init efi_print_memmap(void) { -#ifdef EFI_DEBUG efi_memory_desc_t *md; - void *p; - int i; + int i = 0; - for (p = memmap.map, i = 0; - p < memmap.map_end; - p += memmap.desc_size, i++) { + for_each_efi_memory_desc(md) { char buf[64]; - md = p; pr_info("mem%02u: %s range=[0x%016llx-0x%016llx] (%lluMB)\n", - i, efi_md_typeattr_format(buf, sizeof(buf), md), + i++, efi_md_typeattr_format(buf, sizeof(buf), md), md->phys_addr, md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT) - 1, (md->num_pages >> (20 - EFI_PAGE_SHIFT))); } -#endif /* EFI_DEBUG */ } void __init efi_unmap_memmap(void) { + unsigned long size; + clear_bit(EFI_MEMMAP, &efi.flags); - if (memmap.map) { - early_memunmap(memmap.map, memmap.nr_map * memmap.desc_size); - memmap.map = NULL; + + size = efi.memmap.nr_map * efi.memmap.desc_size; + if (efi.memmap.map) { + early_memunmap(efi.memmap.map, size); + efi.memmap.map = NULL; } } @@ -352,8 +346,6 @@ static int __init efi_systab_init(void *phys) efi.systab->hdr.revision >> 16, efi.systab->hdr.revision & 0xffff); - set_bit(EFI_SYSTEM_TABLES, &efi.flags); - return 0; } @@ -440,17 +432,22 @@ static int __init efi_runtime_init(void) static int __init efi_memmap_init(void) { + unsigned long addr, size; + if (efi_enabled(EFI_PARAVIRT)) return 0; /* Map the EFI memory map */ - memmap.map = early_memremap((unsigned long)memmap.phys_map, - memmap.nr_map * memmap.desc_size); - if (memmap.map == NULL) { + size = efi.memmap.nr_map * efi.memmap.desc_size; + addr = (unsigned long)efi.memmap.phys_map; + + efi.memmap.map = early_memremap(addr, size); + if (efi.memmap.map == NULL) { pr_err("Could not map the memory map!\n"); return -ENOMEM; } - memmap.map_end = memmap.map + (memmap.nr_map * memmap.desc_size); + + efi.memmap.map_end = efi.memmap.map + size; if (add_efi_memmap) do_add_efi_memmap(); @@ -552,12 +549,9 @@ void __init efi_set_executable(efi_memory_desc_t *md, bool executable) void __init runtime_code_page_mkexec(void) { efi_memory_desc_t *md; - void *p; /* Make EFI runtime service code area executable */ - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { - md = p; - + for_each_efi_memory_desc(md) { if (md->type != EFI_RUNTIME_SERVICES_CODE) continue; @@ -604,12 +598,10 @@ void __init old_map_region(efi_memory_desc_t *md) /* Merge contiguous regions of the same type and attribute */ static void __init efi_merge_regions(void) { - void *p; efi_memory_desc_t *md, *prev_md = NULL; - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { + for_each_efi_memory_desc(md) { u64 prev_size; - md = p; if (!prev_md) { prev_md = md; @@ -651,30 +643,31 @@ static void __init get_systab_virt_addr(efi_memory_desc_t *md) static void __init save_runtime_map(void) { #ifdef CONFIG_KEXEC_CORE + unsigned long desc_size; efi_memory_desc_t *md; - void *tmp, *p, *q = NULL; + void *tmp, *q = NULL; int count = 0; if (efi_enabled(EFI_OLD_MEMMAP)) return; - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { - md = p; + desc_size = efi.memmap.desc_size; + for_each_efi_memory_desc(md) { if (!(md->attribute & EFI_MEMORY_RUNTIME) || (md->type == EFI_BOOT_SERVICES_CODE) || (md->type == EFI_BOOT_SERVICES_DATA)) continue; - tmp = krealloc(q, (count + 1) * memmap.desc_size, GFP_KERNEL); + tmp = krealloc(q, (count + 1) * desc_size, GFP_KERNEL); if (!tmp) goto out; q = tmp; - memcpy(q + count * memmap.desc_size, md, memmap.desc_size); + memcpy(q + count * desc_size, md, desc_size); count++; } - efi_runtime_map_setup(q, count, memmap.desc_size); + efi_runtime_map_setup(q, count, desc_size); return; out: @@ -714,10 +707,10 @@ static inline void *efi_map_next_entry_reverse(void *entry) { /* Initial call */ if (!entry) - return memmap.map_end - memmap.desc_size; + return efi.memmap.map_end - efi.memmap.desc_size; - entry -= memmap.desc_size; - if (entry < memmap.map) + entry -= efi.memmap.desc_size; + if (entry < efi.memmap.map) return NULL; return entry; @@ -759,10 +752,10 @@ static void *efi_map_next_entry(void *entry) /* Initial call */ if (!entry) - return memmap.map; + return efi.memmap.map; - entry += memmap.desc_size; - if (entry >= memmap.map_end) + entry += efi.memmap.desc_size; + if (entry >= efi.memmap.map_end) return NULL; return entry; @@ -776,8 +769,11 @@ static void * __init efi_map_regions(int *count, int *pg_shift) { void *p, *new_memmap = NULL; unsigned long left = 0; + unsigned long desc_size; efi_memory_desc_t *md; + desc_size = efi.memmap.desc_size; + p = NULL; while ((p = efi_map_next_entry(p))) { md = p; @@ -792,7 +788,7 @@ static void * __init efi_map_regions(int *count, int *pg_shift) efi_map_region(md); get_systab_virt_addr(md); - if (left < memmap.desc_size) { + if (left < desc_size) { new_memmap = realloc_pages(new_memmap, *pg_shift); if (!new_memmap) return NULL; @@ -801,10 +797,9 @@ static void * __init efi_map_regions(int *count, int *pg_shift) (*pg_shift)++; } - memcpy(new_memmap + (*count * memmap.desc_size), md, - memmap.desc_size); + memcpy(new_memmap + (*count * desc_size), md, desc_size); - left -= memmap.desc_size; + left -= desc_size; (*count)++; } @@ -816,7 +811,6 @@ static void __init kexec_enter_virtual_mode(void) #ifdef CONFIG_KEXEC_CORE efi_memory_desc_t *md; unsigned int num_pages; - void *p; efi.systab = NULL; @@ -840,8 +834,7 @@ static void __init kexec_enter_virtual_mode(void) * Map efi regions which were passed via setup_data. The virt_addr is a * fixed addr which was used in first kernel of a kexec boot. */ - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { - md = p; + for_each_efi_memory_desc(md) { efi_map_region_fixed(md); /* FIXME: add error handling */ get_systab_virt_addr(md); } @@ -850,10 +843,10 @@ static void __init kexec_enter_virtual_mode(void) BUG_ON(!efi.systab); - num_pages = ALIGN(memmap.nr_map * memmap.desc_size, PAGE_SIZE); + num_pages = ALIGN(efi.memmap.nr_map * efi.memmap.desc_size, PAGE_SIZE); num_pages >>= PAGE_SHIFT; - if (efi_setup_page_tables(memmap.phys_map, num_pages)) { + if (efi_setup_page_tables(efi.memmap.phys_map, num_pages)) { clear_bit(EFI_RUNTIME_SERVICES, &efi.flags); return; } @@ -937,16 +930,16 @@ static void __init __efi_enter_virtual_mode(void) if (efi_is_native()) { status = phys_efi_set_virtual_address_map( - memmap.desc_size * count, - memmap.desc_size, - memmap.desc_version, + efi.memmap.desc_size * count, + efi.memmap.desc_size, + efi.memmap.desc_version, (efi_memory_desc_t *)__pa(new_memmap)); } else { status = efi_thunk_set_virtual_address_map( efi_phys.set_virtual_address_map, - memmap.desc_size * count, - memmap.desc_size, - memmap.desc_version, + efi.memmap.desc_size * count, + efi.memmap.desc_size, + efi.memmap.desc_version, (efi_memory_desc_t *)__pa(new_memmap)); } @@ -1011,13 +1004,11 @@ void __init efi_enter_virtual_mode(void) u32 efi_mem_type(unsigned long phys_addr) { efi_memory_desc_t *md; - void *p; if (!efi_enabled(EFI_MEMMAP)) return 0; - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { - md = p; + for_each_efi_memory_desc(md) { if ((md->phys_addr <= phys_addr) && (phys_addr < (md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT)))) diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index 49e4dd4a1..b226b3f49 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -55,14 +55,12 @@ struct efi_scratch efi_scratch; static void __init early_code_mapping_set_exec(int executable) { efi_memory_desc_t *md; - void *p; if (!(__supported_pte_mask & _PAGE_NX)) return; /* Make EFI service code area executable */ - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { - md = p; + for_each_efi_memory_desc(md) { if (md->type == EFI_RUNTIME_SERVICES_CODE || md->type == EFI_BOOT_SERVICES_CODE) efi_set_executable(md, executable); @@ -141,7 +139,7 @@ int __init efi_alloc_page_tables(void) if (efi_enabled(EFI_OLD_MEMMAP)) return 0; - gfp_mask = GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO; + gfp_mask = GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO; efi_pgd = (pgd_t *)__get_free_page(gfp_mask); if (!efi_pgd) return -ENOMEM; @@ -253,7 +251,7 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) * Map all of RAM so that we can access arguments in the 1:1 * mapping when making EFI runtime calls. */ - for_each_efi_memory_desc(&memmap, md) { + for_each_efi_memory_desc(md) { if (md->type != EFI_CONVENTIONAL_MEMORY && md->type != EFI_LOADER_DATA && md->type != EFI_LOADER_CODE) @@ -398,7 +396,6 @@ void __init efi_runtime_update_mappings(void) unsigned long pfn; pgd_t *pgd = efi_pgd; efi_memory_desc_t *md; - void *p; if (efi_enabled(EFI_OLD_MEMMAP)) { if (__supported_pte_mask & _PAGE_NX) @@ -409,9 +406,8 @@ void __init efi_runtime_update_mappings(void) if (!efi_enabled(EFI_NX_PE_DATA)) return; - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { + for_each_efi_memory_desc(md) { unsigned long pf = 0; - md = p; if (!(md->attribute & EFI_MEMORY_RUNTIME)) continue; diff --git a/arch/x86/platform/efi/efi_stub_64.S b/arch/x86/platform/efi/efi_stub_64.S index 92723aeae..cd9507594 100644 --- a/arch/x86/platform/efi/efi_stub_64.S +++ b/arch/x86/platform/efi/efi_stub_64.S @@ -11,7 +11,6 @@ #include #include #include -#include #define SAVE_XMM \ mov %rsp, %rax; \ @@ -40,10 +39,10 @@ mov (%rsp), %rsp ENTRY(efi_call) - FRAME_BEGIN + pushq %rbp + movq %rsp, %rbp SAVE_XMM - mov (%rsp), %rax - mov 8(%rax), %rax + mov 16(%rbp), %rax subq $48, %rsp mov %r9, 32(%rsp) mov %rax, 40(%rsp) @@ -53,6 +52,6 @@ ENTRY(efi_call) call *%rdi addq $48, %rsp RESTORE_XMM - FRAME_END + popq %rbp ret ENDPROC(efi_call) diff --git a/arch/x86/platform/efi/quirks.c b/arch/x86/platform/efi/quirks.c index ab50ada1d..4480c06ca 100644 --- a/arch/x86/platform/efi/quirks.c +++ b/arch/x86/platform/efi/quirks.c @@ -195,10 +195,9 @@ static bool can_free_region(u64 start, u64 size) */ void __init efi_reserve_boot_services(void) { - void *p; + efi_memory_desc_t *md; - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { - efi_memory_desc_t *md = p; + for_each_efi_memory_desc(md) { u64 start = md->phys_addr; u64 size = md->num_pages << EFI_PAGE_SHIFT; bool already_reserved; @@ -250,10 +249,9 @@ void __init efi_reserve_boot_services(void) void __init efi_free_boot_services(void) { - void *p; + efi_memory_desc_t *md; - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { - efi_memory_desc_t *md = p; + for_each_efi_memory_desc(md) { unsigned long long start = md->phys_addr; unsigned long long size = md->num_pages << EFI_PAGE_SHIFT; @@ -373,5 +371,5 @@ bool efi_reboot_required(void) bool efi_poweroff_required(void) { - return !!acpi_gbl_reduced_hardware; + return acpi_gbl_reduced_hardware || acpi_no_s5; } -- cgit v1.2.3-54-g00ecf