diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/e820.h | 8 | ||||
| -rw-r--r-- | arch/x86/include/asm/efi.h | 5 | ||||
| -rw-r--r-- | arch/x86/kernel/e820.c | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/setup.c | 21 | ||||
| -rw-r--r-- | arch/x86/platform/efi/efi.c | 29 | ||||
| -rw-r--r-- | arch/x86/platform/efi/efi_64.c | 17 |
6 files changed, 48 insertions, 35 deletions
diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h index 908b96957d88..c9547033e38e 100644 --- a/arch/x86/include/asm/e820.h +++ b/arch/x86/include/asm/e820.h @@ -53,6 +53,13 @@ */ #define E820_RESERVED_KERN 128 +/* + * Address ranges that need to be mapped by the kernel direct + * mapping. This is used to make sure regions such as + * EFI_RUNTIME_SERVICES_DATA are directly mapped. See setup_arch(). + */ +#define E820_RESERVED_EFI 129 + #ifndef __ASSEMBLY__ #include <linux/types.h> struct e820entry { @@ -115,6 +122,7 @@ static inline void early_memtest(unsigned long start, unsigned long end) } #endif +extern unsigned long e820_end_pfn(unsigned long limit_pfn, unsigned type); extern unsigned long e820_end_of_ram_pfn(void); extern unsigned long e820_end_of_low_ram_pfn(void); extern u64 early_reserve_e820(u64 startt, u64 sizet, u64 align); diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index 7093e4a6a0bc..b8d8bfcd44a9 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -33,8 +33,6 @@ extern unsigned long asmlinkage efi_call_phys(void *, ...); #define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \ efi_call_virt(f, a1, a2, a3, a4, a5, a6) -#define efi_ioremap(addr, size, type) ioremap_cache(addr, size) - #else /* !CONFIG_X86_32 */ extern u64 efi_call0(void *fp); @@ -84,9 +82,6 @@ extern u64 efi_call6(void *fp, u64 arg1, u64 arg2, u64 arg3, efi_call6((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \ (u64)(a3), (u64)(a4), (u64)(a5), (u64)(a6)) -extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size, - u32 type); - #endif /* CONFIG_X86_32 */ extern int add_efi_memmap; diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index 303a0e48f076..65ffd110a81b 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -135,6 +135,7 @@ static void __init e820_print_type(u32 type) printk(KERN_CONT "(usable)"); break; case E820_RESERVED: + case E820_RESERVED_EFI: printk(KERN_CONT "(reserved)"); break; case E820_ACPI: @@ -783,7 +784,7 @@ u64 __init early_reserve_e820(u64 startt, u64 sizet, u64 align) /* * Find the highest page frame number we have available */ -static unsigned long __init e820_end_pfn(unsigned long limit_pfn, unsigned type) +unsigned long __init e820_end_pfn(unsigned long limit_pfn, unsigned type) { int i; unsigned long last_pfn = 0; diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index cf0ef986cb6d..9a9e40fb091c 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -691,6 +691,8 @@ early_param("reservelow", parse_reservelow); void __init setup_arch(char **cmdline_p) { + unsigned long end_pfn; + #ifdef CONFIG_X86_32 memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data)); visws_early_detect(); @@ -932,7 +934,24 @@ void __init setup_arch(char **cmdline_p) init_gbpages(); /* max_pfn_mapped is updated here */ - max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT); + end_pfn = max_low_pfn; + +#ifdef CONFIG_X86_64 + /* + * There may be regions after the last E820_RAM region that we + * want to include in the kernel direct mapping, such as + * EFI_RUNTIME_SERVICES_DATA. + */ + if (efi_enabled) { + unsigned long efi_end; + + efi_end = e820_end_pfn(MAXMEM>>PAGE_SHIFT, E820_RESERVED_EFI); + if (efi_end > max_low_pfn) + end_pfn = efi_end; + } +#endif + + max_low_pfn_mapped = init_memory_mapping(0, end_pfn << PAGE_SHIFT); max_pfn_mapped = max_low_pfn_mapped; #ifdef CONFIG_X86_64 diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 37718f0f053d..c9718a16be15 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -323,10 +323,13 @@ static void __init do_add_efi_memmap(void) case EFI_UNUSABLE_MEMORY: e820_type = E820_UNUSABLE; break; + case EFI_RUNTIME_SERVICES_DATA: + e820_type = E820_RESERVED_EFI; + break; default: /* * EFI_RESERVED_TYPE EFI_RUNTIME_SERVICES_CODE - * EFI_RUNTIME_SERVICES_DATA EFI_MEMORY_MAPPED_IO + * EFI_MEMORY_MAPPED_IO * EFI_MEMORY_MAPPED_IO_PORT_SPACE EFI_PAL_CODE */ e820_type = E820_RESERVED; @@ -671,10 +674,21 @@ void __init efi_enter_virtual_mode(void) end_pfn = PFN_UP(end); if (end_pfn <= max_low_pfn_mapped || (end_pfn > (1UL << (32 - PAGE_SHIFT)) - && end_pfn <= max_pfn_mapped)) + && end_pfn <= max_pfn_mapped)) { va = __va(md->phys_addr); - else - va = efi_ioremap(md->phys_addr, size, md->type); + + if (!(md->attribute & EFI_MEMORY_WB)) { + addr = (u64) (unsigned long)va; + npages = md->num_pages; + memrange_efi_to_native(&addr, &npages); + set_memory_uc(addr, npages); + } + } else { + if (!(md->attribute & EFI_MEMORY_WB)) + va = ioremap_nocache(md->phys_addr, size); + else + va = ioremap_cache(md->phys_addr, size); + } md->virt_addr = (u64) (unsigned long) va; @@ -684,13 +698,6 @@ void __init efi_enter_virtual_mode(void) continue; } - if (!(md->attribute & EFI_MEMORY_WB)) { - addr = md->virt_addr; - npages = md->num_pages; - memrange_efi_to_native(&addr, &npages); - set_memory_uc(addr, npages); - } - systab = (u64) (unsigned long) efi_phys.systab; if (md->phys_addr <= systab && systab < end) { systab += md->virt_addr - md->phys_addr; diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index ac3aa54e2654..312250c6b2de 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -80,20 +80,3 @@ void __init efi_call_phys_epilog(void) local_irq_restore(efi_flags); early_code_mapping_set_exec(0); } - -void __iomem *__init efi_ioremap(unsigned long phys_addr, unsigned long size, - u32 type) -{ - unsigned long last_map_pfn; - - if (type == EFI_MEMORY_MAPPED_IO) - return ioremap(phys_addr, size); - - last_map_pfn = init_memory_mapping(phys_addr, phys_addr + size); - if ((last_map_pfn << PAGE_SHIFT) < phys_addr + size) { - unsigned long top = last_map_pfn << PAGE_SHIFT; - efi_ioremap(top, size - (top - phys_addr), type); - } - - return (void __iomem *)__va(phys_addr); -} |