From: Zixuan Wang <zxwang42@xxxxxxxxx> Pull kernel's UEFI definitions for file operations. These definitions will enable kvm-unit-tests to read files from the disk image, through UEFI services. Signed-off-by: Zixuan Wang <zxwang42@xxxxxxxxx> --- lib/linux/efi.h | 82 +++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 80 insertions(+), 2 deletions(-) diff --git a/lib/linux/efi.h b/lib/linux/efi.h index 455625a..a811bbd 100644 --- a/lib/linux/efi.h +++ b/lib/linux/efi.h @@ -1,5 +1,9 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Relevant definitions from linux/efi.h. */ +/* + * Relevant definitions from + * - linux/efi.h + * - drivers/firmware/efi/libstub/efistub.h + */ #ifndef __LINUX_UEFI_H #define __LINUX_UEFI_H @@ -58,7 +62,10 @@ typedef guid_t efi_guid_t; (b) & 0xff, ((b) >> 8) & 0xff, \ (c) & 0xff, ((c) >> 8) & 0xff, d } } -#define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) +#define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) +#define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) +#define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) +#define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) typedef struct { efi_guid_t guid; @@ -416,6 +423,77 @@ struct efi_boot_memmap { unsigned long *buff_size; }; +#define __aligned_u64 u64 __attribute__((aligned(8))) +typedef struct { + u32 revision; + efi_handle_t parent_handle; + efi_system_table_t *system_table; + efi_handle_t device_handle; + void *file_path; + void *reserved; + u32 load_options_size; + void *load_options; + void *image_base; + __aligned_u64 image_size; + unsigned int image_code_type; + unsigned int image_data_type; + efi_status_t (__efiapi *unload)(efi_handle_t image_handle); +} efi_loaded_image_t; + +typedef struct { + u64 size; + u64 file_size; + u64 phys_size; + efi_time_t create_time; + efi_time_t last_access_time; + efi_time_t modification_time; + __aligned_u64 attribute; + efi_char16_t filename[]; +} efi_file_info_t; + +typedef struct efi_file_protocol efi_file_protocol_t; + +struct efi_file_protocol { + u64 revision; + efi_status_t (__efiapi *open) (efi_file_protocol_t *, + efi_file_protocol_t **, + efi_char16_t *, u64, u64); + efi_status_t (__efiapi *close) (efi_file_protocol_t *); + efi_status_t (__efiapi *delete) (efi_file_protocol_t *); + efi_status_t (__efiapi *read) (efi_file_protocol_t *, + unsigned long *, void *); + efi_status_t (__efiapi *write) (efi_file_protocol_t *, + unsigned long, void *); + efi_status_t (__efiapi *get_position)(efi_file_protocol_t *, u64 *); + efi_status_t (__efiapi *set_position)(efi_file_protocol_t *, u64); + efi_status_t (__efiapi *get_info) (efi_file_protocol_t *, + efi_guid_t *, unsigned long *, + void *); + efi_status_t (__efiapi *set_info) (efi_file_protocol_t *, + efi_guid_t *, unsigned long, + void *); + efi_status_t (__efiapi *flush) (efi_file_protocol_t *); +}; + +typedef struct efi_simple_file_system_protocol efi_simple_file_system_protocol_t; + +struct efi_simple_file_system_protocol { + u64 revision; + int (__efiapi *open_volume)(efi_simple_file_system_protocol_t *, + efi_file_protocol_t **); +}; + +#define EFI_FILE_MODE_READ 0x0000000000000001 +#define EFI_FILE_MODE_WRITE 0x0000000000000002 +#define EFI_FILE_MODE_CREATE 0x8000000000000000 + +#define MAX_FILENAME_SIZE 256 + +struct finfo { + efi_file_info_t info; + efi_char16_t filename[MAX_FILENAME_SIZE]; +}; + #define efi_bs_call(func, ...) efi_system_table->boottime->func(__VA_ARGS__) #define efi_rs_call(func, ...) efi_system_table->runtime->func(__VA_ARGS__) -- 2.35.1