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authorArd Biesheuvel <ardb@kernel.org>2024-07-01 09:35:33 +0200
committerArd Biesheuvel <ardb@kernel.org>2024-07-08 10:17:44 +0200
commitcd6193877c603f4b0c3c7e5607ffa3d52815403f (patch)
tree9e374032ebdc6b96d689825aa85ba330705bf85c /drivers/firmware
parent0dad9ee3c13930fe8122f2efc936fcd1c277a00d (diff)
downloadlwn-cd6193877c603f4b0c3c7e5607ffa3d52815403f.tar.gz
lwn-cd6193877c603f4b0c3c7e5607ffa3d52815403f.zip
x86/efistub: Enable SMBIOS protocol handling for x86
The smbios.c source file is not currently included in the x86 build, and before we can do so, it needs some tweaks to build correctly in combination with the EFI mixed mode support. Reviewed-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/efi/libstub/Makefile2
-rw-r--r--drivers/firmware/efi/libstub/smbios.c39
2 files changed, 26 insertions, 15 deletions
diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
index 06f0428a723c..1f32d6cf98d6 100644
--- a/drivers/firmware/efi/libstub/Makefile
+++ b/drivers/firmware/efi/libstub/Makefile
@@ -76,7 +76,7 @@ lib-$(CONFIG_EFI_GENERIC_STUB) += efi-stub.o string.o intrinsics.o systable.o \
lib-$(CONFIG_ARM) += arm32-stub.o
lib-$(CONFIG_ARM64) += kaslr.o arm64.o arm64-stub.o smbios.o
-lib-$(CONFIG_X86) += x86-stub.o
+lib-$(CONFIG_X86) += x86-stub.o smbios.o
lib-$(CONFIG_X86_64) += x86-5lvl.o
lib-$(CONFIG_RISCV) += kaslr.o riscv.o riscv-stub.o
lib-$(CONFIG_LOONGARCH) += loongarch.o loongarch-stub.o
diff --git a/drivers/firmware/efi/libstub/smbios.c b/drivers/firmware/efi/libstub/smbios.c
index 520c9079717a..f31410d7e7e1 100644
--- a/drivers/firmware/efi/libstub/smbios.c
+++ b/drivers/firmware/efi/libstub/smbios.c
@@ -6,20 +6,31 @@
#include "efistub.h"
-typedef struct efi_smbios_protocol efi_smbios_protocol_t;
-
-struct efi_smbios_protocol {
- efi_status_t (__efiapi *add)(efi_smbios_protocol_t *, efi_handle_t,
- u16 *, struct efi_smbios_record *);
- efi_status_t (__efiapi *update_string)(efi_smbios_protocol_t *, u16 *,
- unsigned long *, u8 *);
- efi_status_t (__efiapi *remove)(efi_smbios_protocol_t *, u16);
- efi_status_t (__efiapi *get_next)(efi_smbios_protocol_t *, u16 *, u8 *,
- struct efi_smbios_record **,
- efi_handle_t *);
-
- u8 major_version;
- u8 minor_version;
+typedef union efi_smbios_protocol efi_smbios_protocol_t;
+
+union efi_smbios_protocol {
+ struct {
+ efi_status_t (__efiapi *add)(efi_smbios_protocol_t *, efi_handle_t,
+ u16 *, struct efi_smbios_record *);
+ efi_status_t (__efiapi *update_string)(efi_smbios_protocol_t *, u16 *,
+ unsigned long *, u8 *);
+ efi_status_t (__efiapi *remove)(efi_smbios_protocol_t *, u16);
+ efi_status_t (__efiapi *get_next)(efi_smbios_protocol_t *, u16 *, u8 *,
+ struct efi_smbios_record **,
+ efi_handle_t *);
+
+ u8 major_version;
+ u8 minor_version;
+ };
+ struct {
+ u32 add;
+ u32 update_string;
+ u32 remove;
+ u32 get_next;
+
+ u8 major_version;
+ u8 minor_version;
+ } mixed_mode;
};
const struct efi_smbios_record *efi_get_smbios_record(u8 type)