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efi: stub: Pass EFI system table address to U-Boot payload

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This updates the EFI stub codes to pass UEFI BIOS's system table
address to U-Boot payload so that U-Boot can utilize it.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2018-08-23 08:24:09 -07:00
parent aac79251c7
commit cbe503fbc1
2 changed files with 14 additions and 0 deletions
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10
include/efi.h
View File

@ -248,6 +248,7 @@ enum efi_entry_t {
EFIET_END, /* Signals this is the last (empty) entry */ EFIET_END, /* Signals this is the last (empty) entry */
EFIET_MEMORY_MAP, EFIET_MEMORY_MAP,
EFIET_GOP_MODE, EFIET_GOP_MODE,
EFIET_SYS_TABLE,
/* Number of entries */ /* Number of entries */
EFIET_MEMORY_COUNT, EFIET_MEMORY_COUNT,
@ -338,6 +339,15 @@ struct efi_entry_gopmode {
} info[]; } info[];
}; };
/**
* struct efi_entry_systable - system table passed to U-Boot
*
* @sys_table: EFI system table address
*/
struct efi_entry_systable {
efi_physical_addr_t sys_table;
};
static inline struct efi_mem_desc *efi_get_next_mem_desc( static inline struct efi_mem_desc *efi_get_next_mem_desc(
struct efi_entry_memmap *map, struct efi_mem_desc *desc) struct efi_entry_memmap *map, struct efi_mem_desc *desc)
{ {

4
lib/efi/efi_stub.c
View File

@ -277,6 +277,7 @@ efi_status_t EFIAPI efi_main(efi_handle_t image,
struct efi_entry_memmap map; struct efi_entry_memmap map;
struct efi_gop *gop; struct efi_gop *gop;
struct efi_entry_gopmode mode; struct efi_entry_gopmode mode;
struct efi_entry_systable table;
efi_guid_t efi_gop_guid = EFI_GOP_GUID; efi_guid_t efi_gop_guid = EFI_GOP_GUID;
efi_uintn_t key, desc_size, size; efi_uintn_t key, desc_size, size;
efi_status_t ret; efi_status_t ret;
@ -335,6 +336,9 @@ efi_status_t EFIAPI efi_main(efi_handle_t image,
return ret; return ret;
} }
table.sys_table = (ulong)sys_table;
add_entry_addr(priv, EFIET_SYS_TABLE, &table, sizeof(table), NULL, 0);
ret = boot->exit_boot_services(image, key); ret = boot->exit_boot_services(image, key);
if (ret) { if (ret) {
/* /*