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| author |   Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2019-06-25 15:36:45 +0200 |
|---|---|---|
| committer | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2019-08-08 11:01:48 +0300 |
| commit | e55f31a599478fb06a5a5d95e019e963322535cb (patch) | |
| tree | 13cc7acad2d7c295160f6792f082e38b817ae98a /arch/x86 | |
| parent | Linus 5.3-rc1 (diff) | |
| download | linux-dev-e55f31a599478fb06a5a5d95e019e963322535cb.tar.xz linux-dev-e55f31a599478fb06a5a5d95e019e963322535cb.zip | |
efi: x86: move efi_is_table_address() into arch/x86
The function efi_is_table_address() and the associated array of table
pointers is specific to x86. Since we will be adding some more x86
specific tables, let's move this code out of the generic code first.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/efi.h | 5 | ||||
| -rw-r--r-- | arch/x86/mm/ioremap.c | 1 | ||||
| -rw-r--r-- | arch/x86/platform/efi/efi.c | 33 |
3 files changed, 39 insertions, 0 deletions
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index 606a4b6a9812..43a82e59c59d 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -242,6 +242,7 @@ static inline bool efi_is_64bit(void) __efi_early()->runtime_services), __VA_ARGS__) extern bool efi_reboot_required(void); +extern bool efi_is_table_address(unsigned long phys_addr); #else static inline void parse_efi_setup(u64 phys_addr, u32 data_len) {} @@ -249,6 +250,10 @@ static inline bool efi_reboot_required(void) { return false; } +static inline bool efi_is_table_address(unsigned long phys_addr) +{ + return false; +} #endif /* CONFIG_EFI */ #endif /* _ASM_X86_EFI_H */ diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c index 63e99f15d7cf..a39dcdb5ae34 100644 --- a/arch/x86/mm/ioremap.c +++ b/arch/x86/mm/ioremap.c @@ -19,6 +19,7 @@ #include <asm/set_memory.h> #include <asm/e820/api.h> +#include <asm/efi.h> #include <asm/fixmap.h> #include <asm/pgtable.h> #include <asm/tlbflush.h> diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index a7189a3b4d70..8d9be97a5607 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -64,6 +64,25 @@ static efi_config_table_type_t arch_tables[] __initdata = { {NULL_GUID, NULL, NULL}, }; +static const unsigned long * const efi_tables[] = { + &efi.mps, + &efi.acpi, + &efi.acpi20, + &efi.smbios, + &efi.smbios3, + &efi.sal_systab, + &efi.boot_info, + &efi.hcdp, + &efi.uga, + &efi.uv_systab, + &efi.fw_vendor, + &efi.runtime, + &efi.config_table, + &efi.esrt, + &efi.properties_table, + &efi.mem_attr_table, +}; + u64 efi_setup; /* efi setup_data physical address */ static int add_efi_memmap __initdata; @@ -1049,3 +1068,17 @@ static int __init arch_parse_efi_cmdline(char *str) return 0; } early_param("efi", arch_parse_efi_cmdline); + +bool efi_is_table_address(unsigned long phys_addr) +{ + unsigned int i; + + if (phys_addr == EFI_INVALID_TABLE_ADDR) + return false; + + for (i = 0; i < ARRAY_SIZE(efi_tables); i++) + if (*(efi_tables[i]) == phys_addr) + return true; + + return false; +} |