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| author | Michael Roth <michael.roth@amd.com> | 2022-02-24 10:56:07 -0600 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2022-04-06 17:07:19 +0200 |
| commit | dee602dd5d1489b5aa4651c561dfbe90eaee1589 (patch) | |
| tree | b18372999eb9b221d6e08de6baaf69a4298a4233 /arch/x86/boot/compressed/misc.h | |
| parent | 61c14ceda8405f37545a0983d6b9bc45c6236793 (diff) | |
| download | lwn-dee602dd5d1489b5aa4651c561dfbe90eaee1589.tar.gz lwn-dee602dd5d1489b5aa4651c561dfbe90eaee1589.zip | |
x86/compressed/acpi: Move EFI vendor 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: Unbreak unnecessarily broken lines. ]
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/20220307213356.2797205-28-brijesh.singh@amd.com
Diffstat (limited to 'arch/x86/boot/compressed/misc.h')
| -rw-r--r-- | arch/x86/boot/compressed/misc.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h index 8815af092a10..ba538af37e90 100644 --- a/arch/x86/boot/compressed/misc.h +++ b/arch/x86/boot/compressed/misc.h @@ -23,6 +23,7 @@ #include <linux/screen_info.h> #include <linux/elf.h> #include <linux/io.h> +#include <linux/efi.h> #include <asm/page.h> #include <asm/boot.h> #include <asm/bootparam.h> @@ -188,6 +189,10 @@ 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); +unsigned long efi_find_vendor_table(struct boot_params *bp, + unsigned long cfg_tbl_pa, + unsigned int cfg_tbl_len, + efi_guid_t guid); #else static inline enum efi_type efi_get_type(struct boot_params *bp) { @@ -205,6 +210,14 @@ static inline int efi_get_conf_table(struct boot_params *bp, { return -ENOENT; } + +static inline unsigned long efi_find_vendor_table(struct boot_params *bp, + unsigned long cfg_tbl_pa, + unsigned int cfg_tbl_len, + efi_guid_t guid) +{ + return 0; +} #endif /* CONFIG_EFI */ #endif /* BOOT_COMPRESSED_MISC_H */ |