Up to now we used the value of the bootargs environment variable as load options in the boot manager. This is not correct. The data has to be taken from the Boot#### variable.
Let the boot manager copy the optional data of the EFI_LOAD_OPTION as load options to the loaded image protocol.
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- cmd/bootefi.c | 22 +++++++++++---------- cmd/efidebug.c | 4 +++- include/efi_loader.h | 2 +- lib/efi_loader/efi_bootmgr.c | 38 +++++++++++++++++++++++++----------- 4 files changed, 43 insertions(+), 23 deletions(-)
diff --git a/cmd/bootefi.c b/cmd/bootefi.c index 5523405e13..fbfed54e85 100644 --- a/cmd/bootefi.c +++ b/cmd/bootefi.c @@ -310,17 +310,11 @@ efi_status_t efi_install_fdt(void *fdt) * Load the EFI binary into a newly assigned memory unwinding the relocation * information, install the loaded image protocol, and call the binary. */ -static efi_status_t do_bootefi_exec(efi_handle_t handle) +static efi_status_t do_bootefi_exec(efi_handle_t handle, void *load_options) { efi_status_t ret; efi_uintn_t exit_data_size = 0; u16 *exit_data = NULL; - u16 *load_options; - - /* Transfer environment variable as load options */ - ret = efi_env_set_load_options(handle, "bootargs", &load_options); - if (ret != EFI_SUCCESS) - return ret;
/* Call our payload! */ ret = EFI_CALL(efi_start_image(handle, &exit_data_size, &exit_data)); @@ -349,14 +343,15 @@ static int do_efibootmgr(void) { efi_handle_t handle; efi_status_t ret; + void *load_options;
- ret = efi_bootmgr_load(&handle); + ret = efi_bootmgr_load(&handle, &load_options); if (ret != EFI_SUCCESS) { log_notice("EFI boot manager: Cannot load any image\n"); return CMD_RET_FAILURE; }
- ret = do_bootefi_exec(handle); + ret = do_bootefi_exec(handle, load_options);
if (ret != EFI_SUCCESS) return CMD_RET_FAILURE; @@ -467,7 +462,14 @@ efi_status_t efi_run_image(void *source_buffer, efi_uintn_t source_size) if (ret != EFI_SUCCESS) goto out;
- ret = do_bootefi_exec(handle); + u16 *load_options; + + /* Transfer environment variable as load options */ + ret = efi_env_set_load_options(handle, "bootargs", &load_options); + if (ret != EFI_SUCCESS) + goto out; + + ret = do_bootefi_exec(handle, load_options);
out: efi_delete_handle(mem_handle); diff --git a/cmd/efidebug.c b/cmd/efidebug.c index 58018f700c..d00d4247dc 100644 --- a/cmd/efidebug.c +++ b/cmd/efidebug.c @@ -1126,8 +1126,9 @@ static int do_efi_test_bootmgr(struct cmd_tbl *cmdtp, int flag, efi_uintn_t exit_data_size = 0; u16 *exit_data = NULL; efi_status_t ret; + void *load_options;
- ret = efi_bootmgr_load(&image); + ret = efi_bootmgr_load(&image, &load_options); printf("efi_bootmgr_load() returned: %ld\n", ret & ~EFI_ERROR_MASK);
/* We call efi_start_image() even if error for test purpose. */ @@ -1138,6 +1139,7 @@ static int do_efi_test_bootmgr(struct cmd_tbl *cmdtp, int flag,
efi_restore_gd();
+ free(load_options); return CMD_RET_SUCCESS; }
diff --git a/include/efi_loader.h b/include/efi_loader.h index ad580bd226..7f0ab1be56 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -720,7 +720,7 @@ unsigned long efi_serialize_load_option(struct efi_load_option *lo, u8 **data); 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); +efi_status_t efi_bootmgr_load(efi_handle_t *handle, void **load_options);
/** * 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 a4bc272c34..1e06e60963 100644 --- a/lib/efi_loader/efi_bootmgr.c +++ b/lib/efi_loader/efi_bootmgr.c @@ -206,11 +206,13 @@ static void *get_var(u16 *name, const efi_guid_t *vendor, * if successful. This checks that the EFI_LOAD_OPTION is active (enabled) * and that the specified file to boot exists. * - * @n: number of the boot option, e.g. 0x0a13 for Boot0A13 - * @handle: on return handle for the newly installed image - * Return: status code + * @n: number of the boot option, e.g. 0x0a13 for Boot0A13 + * @handle: on return handle for the newly installed image + * @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) +static efi_status_t try_load_entry(u16 n, efi_handle_t *handle, + void **load_options) { struct efi_load_option lo; u16 varname[] = L"Boot0000"; @@ -250,10 +252,9 @@ static efi_status_t try_load_entry(u16 n, efi_handle_t *handle)
attributes = EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS; - size = sizeof(n); ret = efi_set_variable_int(L"BootCurrent", &efi_global_variable_guid, - attributes, size, &n, false); + attributes, sizeof(n), &n, false); if (ret != EFI_SUCCESS) { if (EFI_CALL(efi_unload_image(*handle)) != EFI_SUCCESS) @@ -266,6 +267,19 @@ static efi_status_t try_load_entry(u16 n, efi_handle_t *handle) ret = EFI_LOAD_ERROR; }
+ /* Set load options */ + if (size) { + *load_options = malloc(size); + if (!*load_options) { + ret = EFI_OUT_OF_RESOURCES; + goto error; + } + memcpy(*load_options, lo.optional_data, size); + ret = efi_set_load_options(*handle, size, *load_options); + } else { + load_options = NULL; + } + error: free(load_option);
@@ -279,10 +293,11 @@ error: * EFI variable, the available load-options, finding and returning * the first one that can be loaded successfully. * - * @handle: on return handle for the newly installed image - * Return: status code + * @handle: on return handle for the newly installed image + * @load_options: load options set on the loaded image protocol + * Return: status code */ -efi_status_t efi_bootmgr_load(efi_handle_t *handle) +efi_status_t efi_bootmgr_load(efi_handle_t *handle, void **load_options) { u16 bootnext, *bootorder; efi_uintn_t size; @@ -310,7 +325,8 @@ efi_status_t efi_bootmgr_load(efi_handle_t *handle) /* load BootNext */ if (ret == EFI_SUCCESS) { if (size == sizeof(u16)) { - ret = try_load_entry(bootnext, handle); + ret = try_load_entry(bootnext, handle, + load_options); if (ret == EFI_SUCCESS) return ret; log_warning( @@ -333,7 +349,7 @@ efi_status_t efi_bootmgr_load(efi_handle_t *handle) 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); + ret = try_load_entry(bootorder[i], handle, load_options); if (ret == EFI_SUCCESS) break; } -- 2.28.0