From 58bef195f94eae4ae90bd5409a81a204c0cbbca3 Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Fri, 26 Apr 2024 16:13:11 +0200 Subject: cmd: eficonfig: add support for setting fdt We already support creating a load option where the device-path field contains the concatenation of the binary device-path and optionally the device path of the initrd which we expose via the EFI_LOAD_FILE2_PROTOCOL. Allow to append another device-path pointing to the device-tree identified by the device-tree GUID. Signed-off-by: Heinrich Schuchardt Reviewed-by: Ilias Apalodimas --- cmd/eficonfig.c | 79 ++++++++++++++++++++++++++++++++++++++++++++------------- 1 file changed, 61 insertions(+), 18 deletions(-) (limited to 'cmd') diff --git a/cmd/eficonfig.c b/cmd/eficonfig.c index 7bb92e510dc..6108b4243ac 100644 --- a/cmd/eficonfig.c +++ b/cmd/eficonfig.c @@ -61,6 +61,7 @@ struct eficonfig_filepath_info { struct eficonfig_boot_option { struct eficonfig_select_file_info file_info; struct eficonfig_select_file_info initrd_info; + struct eficonfig_select_file_info fdt_info; unsigned int boot_index; u16 *description; u16 *optional_data; @@ -1307,6 +1308,10 @@ static efi_status_t eficonfig_show_boot_option(struct eficonfig_boot_option *bo, if (ret != EFI_SUCCESS) goto out; + ret = prepare_file_selection_entry(efi_menu, "Fdt File: ", &bo->fdt_info); + if (ret != EFI_SUCCESS) + goto out; + ret = create_boot_option_entry(efi_menu, "Optional Data: ", bo->optional_data, eficonfig_boot_add_optional_data, bo); if (ret != EFI_SUCCESS) @@ -1387,27 +1392,44 @@ static efi_status_t eficonfig_edit_boot_option(u16 *varname, struct eficonfig_bo efi_status_t ret; char *tmp = NULL, *p; struct efi_load_option lo = {0}; - efi_uintn_t final_dp_size; + efi_uintn_t dp_size; struct efi_device_path *dp = NULL; efi_uintn_t size = load_option_size; - struct efi_device_path *final_dp = NULL; struct efi_device_path *device_dp = NULL; struct efi_device_path *initrd_dp = NULL; + struct efi_device_path *fdt_dp = NULL; struct efi_device_path *initrd_device_dp = NULL; + struct efi_device_path *fdt_device_dp = NULL; - const struct efi_initrd_dp id_dp = { + const struct efi_initrd_dp initrd_prefix = { .vendor = { { DEVICE_PATH_TYPE_MEDIA_DEVICE, DEVICE_PATH_SUB_TYPE_VENDOR_PATH, - sizeof(id_dp.vendor), + sizeof(initrd_prefix.vendor), }, EFI_INITRD_MEDIA_GUID, }, .end = { DEVICE_PATH_TYPE_END, DEVICE_PATH_SUB_TYPE_END, - sizeof(id_dp.end), + sizeof(initrd_prefix.end), + } + }; + + const struct efi_initrd_dp fdt_prefix = { + .vendor = { + { + DEVICE_PATH_TYPE_MEDIA_DEVICE, + DEVICE_PATH_SUB_TYPE_VENDOR_PATH, + sizeof(fdt_prefix.vendor), + }, + EFI_FDT_GUID, + }, + .end = { + DEVICE_PATH_TYPE_END, + DEVICE_PATH_SUB_TYPE_END, + sizeof(initrd_prefix.end), } }; @@ -1423,6 +1445,12 @@ static efi_status_t eficonfig_edit_boot_option(u16 *varname, struct eficonfig_bo goto out; } + bo->fdt_info.current_path = calloc(1, EFICONFIG_FILE_PATH_BUF_SIZE); + if (!bo->fdt_info.current_path) { + ret = EFI_OUT_OF_RESOURCES; + goto out; + } + bo->description = calloc(1, EFICONFIG_DESCRIPTION_MAX * sizeof(u16)); if (!bo->description) { ret = EFI_OUT_OF_RESOURCES; @@ -1455,13 +1483,20 @@ static efi_status_t eficonfig_edit_boot_option(u16 *varname, struct eficonfig_bo if (lo.file_path) fill_file_info(lo.file_path, &bo->file_info, device_dp); - /* Initrd file path(optional) is placed at second instance. */ + /* Initrd file path (optional) is placed at second instance. */ initrd_dp = efi_dp_from_lo(&lo, &efi_lf2_initrd_guid); if (initrd_dp) { fill_file_info(initrd_dp, &bo->initrd_info, initrd_device_dp); efi_free_pool(initrd_dp); } + /* Fdt file path (optional) is placed as third instance. */ + fdt_dp = efi_dp_from_lo(&lo, &efi_guid_fdt); + if (fdt_dp) { + fill_file_info(fdt_dp, &bo->fdt_info, fdt_device_dp); + efi_free_pool(fdt_dp); + } + if (size > 0) memcpy(bo->optional_data, lo.optional_data, size); } @@ -1483,26 +1518,31 @@ static efi_status_t eficonfig_edit_boot_option(u16 *varname, struct eficonfig_bo ret = EFI_OUT_OF_RESOURCES; goto out; } - initrd_dp = efi_dp_concat((const struct efi_device_path *)&id_dp, + initrd_dp = efi_dp_concat((const struct efi_device_path *)&initrd_prefix, dp, 0); efi_free_pool(dp); } + if (bo->fdt_info.dp_volume) { + dp = eficonfig_create_device_path(bo->fdt_info.dp_volume, + bo->fdt_info.current_path); + if (!dp) { + ret = EFI_OUT_OF_RESOURCES; + goto out; + } + fdt_dp = efi_dp_concat((const struct efi_device_path *)&fdt_prefix, + dp, 0); + efi_free_pool(dp); + } + dp = eficonfig_create_device_path(bo->file_info.dp_volume, bo->file_info.current_path); if (!dp) { ret = EFI_OUT_OF_RESOURCES; goto out; } - final_dp_size = efi_dp_size(dp) + sizeof(END); - if (initrd_dp) { - final_dp = efi_dp_concat(dp, initrd_dp, 1); - final_dp_size += efi_dp_size(initrd_dp) + sizeof(END); - } else { - final_dp = efi_dp_dup(dp); - } - efi_free_pool(dp); - if (!final_dp) + ret = efi_load_option_dp_join(&dp, &dp_size, initrd_dp, fdt_dp); + if (ret != EFI_SUCCESS) goto out; if (utf16_utf8_strlen(bo->optional_data)) { @@ -1514,17 +1554,20 @@ static efi_status_t eficonfig_edit_boot_option(u16 *varname, struct eficonfig_bo utf16_utf8_strncpy(&p, bo->optional_data, u16_strlen(bo->optional_data)); } - ret = eficonfig_set_boot_option(varname, final_dp, final_dp_size, bo->description, tmp); + ret = eficonfig_set_boot_option(varname, dp, dp_size, bo->description, tmp); out: free(tmp); free(bo->optional_data); free(bo->description); free(bo->file_info.current_path); free(bo->initrd_info.current_path); + free(bo->fdt_info.current_path); efi_free_pool(device_dp); efi_free_pool(initrd_device_dp); efi_free_pool(initrd_dp); - efi_free_pool(final_dp); + efi_free_pool(fdt_device_dp); + efi_free_pool(fdt_dp); + efi_free_pool(dp); return ret; } -- cgit v1.2.3