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efi/libstub: Add memory attribute protocol definitions

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EFI_MEMORY_ATTRIBUTE_PROTOCOL servers as a better alternative to
DXE services for setting memory attributes in EFI Boot Services
environment. This protocol is better since it is a part of UEFI
specification itself and not UEFI PI specification like DXE
services.

Add EFI_MEMORY_ATTRIBUTE_PROTOCOL definitions.
Support mixed mode properly for its calls.

Tested-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Evgeniy Baskov <baskov@ispras.ru>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Evgeniy Baskov 2022-11-22 14:12:31 +03:00 committed by Ard Biesheuvel
parent 0217a40d7b
commit 79729f26b0
3 changed files with 28 additions and 0 deletions
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7
arch/x86/include/asm/efi.h
View file

@ -335,6 +335,13 @@ static inline u32 efi64_convert_status(efi_status_t status)
#define __efi64_argmap_open_volume(prot, file) \
((prot), efi64_zero_upper(file))
/* Memory Attribute Protocol */
#define __efi64_argmap_set_memory_attributes(protocol, phys, size, flags) \
((protocol), __efi64_split(phys), __efi64_split(size), __efi64_split(flags))
#define __efi64_argmap_clear_memory_attributes(protocol, phys, size, flags) \
((protocol), __efi64_split(phys), __efi64_split(size), __efi64_split(flags))
/*
* The macros below handle the plumbing for the argument mapping. To add a
* mapping for a specific EFI method, simply define a macro

20
drivers/firmware/efi/libstub/efistub.h
View file

@ -442,6 +442,26 @@ union efi_dxe_services_table {
} mixed_mode;
};
typedef union efi_memory_attribute_protocol efi_memory_attribute_protocol_t;
union efi_memory_attribute_protocol {
struct {
efi_status_t (__efiapi *get_memory_attributes)(
efi_memory_attribute_protocol_t *, efi_physical_addr_t, u64, u64 *);
efi_status_t (__efiapi *set_memory_attributes)(
efi_memory_attribute_protocol_t *, efi_physical_addr_t, u64, u64);
efi_status_t (__efiapi *clear_memory_attributes)(
efi_memory_attribute_protocol_t *, efi_physical_addr_t, u64, u64);
};
struct {
u32 get_memory_attributes;
u32 set_memory_attributes;
u32 clear_memory_attributes;
} mixed_mode;
};
typedef union efi_uga_draw_protocol efi_uga_draw_protocol_t;
union efi_uga_draw_protocol {

1
include/linux/efi.h
View file

@ -391,6 +391,7 @@ void efi_native_runtime_setup(void);
#define EFI_RT_PROPERTIES_TABLE_GUID EFI_GUID(0xeb66918a, 0x7eef, 0x402a, 0x84, 0x2e, 0x93, 0x1d, 0x21, 0xc3, 0x8a, 0xe9)
#define EFI_DXE_SERVICES_TABLE_GUID EFI_GUID(0x05ad34ba, 0x6f02, 0x4214, 0x95, 0x2e, 0x4d, 0xa0, 0x39, 0x8e, 0x2b, 0xb9)
#define EFI_SMBIOS_PROTOCOL_GUID EFI_GUID(0x03583ff6, 0xcb36, 0x4940, 0x94, 0x7e, 0xb9, 0xb3, 0x9f, 0x4a, 0xfa, 0xf7)
#define EFI_MEMORY_ATTRIBUTE_PROTOCOL_GUID EFI_GUID(0xf4560cf6, 0x40ec, 0x4b4a, 0xa1, 0x92, 0xbf, 0x1d, 0x57, 0xd0, 0xb1, 0x89)
#define EFI_IMAGE_SECURITY_DATABASE_GUID EFI_GUID(0xd719b2cb, 0x3d3a, 0x4596, 0xa3, 0xbc, 0xda, 0xd0, 0x0e, 0x67, 0x65, 0x6f)
#define EFI_SHIM_LOCK_GUID EFI_GUID(0x605dab50, 0xe046, 0x4300, 0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23)