This commit introduces the new command "bootefi bootindex". With this command, user can select which "Boot####" option to load and execute.
Signed-off-by: Masahisa Kojima masahisa.kojima@linaro.org --- Changes in v3: - newly created
cmd/bootefi.c | 42 ++++++++++++++++++++++++++++++++++++ include/efi_loader.h | 1 + lib/efi_loader/efi_bootmgr.c | 7 +++--- 3 files changed, 46 insertions(+), 4 deletions(-)
diff --git a/cmd/bootefi.c b/cmd/bootefi.c index 46eebd5ee2..df86438fec 100644 --- a/cmd/bootefi.c +++ b/cmd/bootefi.c @@ -416,6 +416,30 @@ static int do_efibootmgr(void) return CMD_RET_SUCCESS; }
+/** + * do_efibootindex() - load and execute the specified Boot#### option + * + * Return: status code + */ +static int do_efibootindex(u16 boot_index) +{ + efi_handle_t handle; + efi_status_t ret; + void *load_options; + + ret = efi_try_load_entry(boot_index, &handle, &load_options); + if (ret != EFI_SUCCESS) { + log_notice("EFI boot manager: failed to load Boot%04X\n", boot_index); + return CMD_RET_FAILURE; + } + + ret = do_bootefi_exec(handle, load_options); + + if (ret != EFI_SUCCESS) + return CMD_RET_FAILURE; + + return CMD_RET_SUCCESS; +} /** * do_bootefi_image() - execute EFI binary * @@ -654,6 +678,22 @@ static int do_bootefi(struct cmd_tbl *cmdtp, int flag, int argc, return CMD_RET_FAILURE; }
+ if (IS_ENABLED(CONFIG_CMD_BOOTEFI_BOOTMGR)) { + if (!strcmp(argv[1], "bootindex")) { + char *endp; + int boot_index; + + if (argc < 3) + return CMD_RET_USAGE; + + boot_index = (int)hextoul(argv[2], &endp); + if (*endp != '\0' || boot_index > 0xffff) + return CMD_RET_USAGE; + + return do_efibootindex((u16)boot_index); + } + } + if (argc > 2) { uintptr_t fdt_addr;
@@ -702,6 +742,8 @@ static char bootefi_help_text[] = "\n" " If specified, the device tree located at <fdt address> gets\n" " exposed as EFI configuration table.\n" + "bootefi bootindex <boot option>\n" + " - load and boot EFI payload based on the specified BootXXXX variable.\n" #endif ; #endif diff --git a/include/efi_loader.h b/include/efi_loader.h index 80a5f1ec01..e5972f5fee 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -861,6 +861,7 @@ efi_status_t efi_set_load_options(efi_handle_t handle, efi_uintn_t load_options_size, void *load_options); efi_status_t efi_bootmgr_load(efi_handle_t *handle, void **load_options); +efi_status_t efi_try_load_entry(u16 n, efi_handle_t *handle, void **load_options);
/** * struct efi_image_regions - A list of memory regions diff --git a/lib/efi_loader/efi_bootmgr.c b/lib/efi_loader/efi_bootmgr.c index 8c04ecbdc8..a3060b5c62 100644 --- a/lib/efi_loader/efi_bootmgr.c +++ b/lib/efi_loader/efi_bootmgr.c @@ -42,8 +42,7 @@ static const struct efi_runtime_services *rs; * @load_options: load options set on the loaded image protocol * Return: status code */ -static efi_status_t try_load_entry(u16 n, efi_handle_t *handle, - void **load_options) +efi_status_t efi_try_load_entry(u16 n, efi_handle_t *handle, void **load_options) { struct efi_load_option lo; u16 varname[] = u"Boot0000"; @@ -165,7 +164,7 @@ efi_status_t efi_bootmgr_load(efi_handle_t *handle, void **load_options) /* load BootNext */ if (ret == EFI_SUCCESS) { if (size == sizeof(u16)) { - ret = try_load_entry(bootnext, handle, + ret = efi_try_load_entry(bootnext, handle, load_options); if (ret == EFI_SUCCESS) return ret; @@ -189,7 +188,7 @@ efi_status_t efi_bootmgr_load(efi_handle_t *handle, void **load_options) for (i = 0; i < num; i++) { log_debug("%s trying to load Boot%04X\n", __func__, bootorder[i]); - ret = try_load_entry(bootorder[i], handle, load_options); + ret = efi_try_load_entry(bootorder[i], handle, load_options); if (ret == EFI_SUCCESS) break; }