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| author |   Michael Roth <michael.roth@amd.com> | 2022-02-24 10:56:06 -0600 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2022-04-06 17:07:15 +0200 |
| commit | 61c14ceda8405f37545a0983d6b9bc45c6236793 (patch) | |
| tree | 8887f353afc3096b316f3c43487c89f55fdc54b3 /arch/x86/boot/compressed/misc.h | |
| parent | x86/compressed/acpi: Move EFI system table lookup to helper (diff) | |
| download | linux-dev-61c14ceda8405f37545a0983d6b9bc45c6236793.tar.xz linux-dev-61c14ceda8405f37545a0983d6b9bc45c6236793.zip | |
x86/compressed/acpi: Move EFI config table lookup to helper
Future patches for SEV-SNP-validated CPUID will also require early
parsing of the EFI configuration. Incrementally move the related code
into a set of helpers that can be re-used for that purpose.
[ bp: Remove superfluous zeroing of a stack variable. ]
Signed-off-by: Michael Roth <michael.roth@amd.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220307213356.2797205-27-brijesh.singh@amd.com
Diffstat (limited to 'arch/x86/boot/compressed/misc.h')
| -rw-r--r-- | arch/x86/boot/compressed/misc.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h index b2acd3ac6525..8815af092a10 100644 --- a/arch/x86/boot/compressed/misc.h +++ b/arch/x86/boot/compressed/misc.h @@ -186,6 +186,8 @@ enum efi_type { /* helpers for early EFI config table access */ enum efi_type efi_get_type(struct boot_params *bp); unsigned long efi_get_system_table(struct boot_params *bp); +int efi_get_conf_table(struct boot_params *bp, unsigned long *cfg_tbl_pa, + unsigned int *cfg_tbl_len); #else static inline enum efi_type efi_get_type(struct boot_params *bp) { @@ -196,6 +198,13 @@ static inline unsigned long efi_get_system_table(struct boot_params *bp) { return 0; } + +static inline int efi_get_conf_table(struct boot_params *bp, + unsigned long *cfg_tbl_pa, + unsigned int *cfg_tbl_len) +{ + return -ENOENT; +} #endif /* CONFIG_EFI */ #endif /* BOOT_COMPRESSED_MISC_H */ |