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 heinrich.schuchardt@canonical.com --- cmd/eficonfig.c | 68 +++++++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 63 insertions(+), 5 deletions(-)
diff --git a/cmd/eficonfig.c b/cmd/eficonfig.c index 1c57e66040b..d314051ee58 100644 --- a/cmd/eficonfig.c +++ b/cmd/eficonfig.c @@ -62,6 +62,7 @@ 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; @@ -1308,6 +1309,10 @@ 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) @@ -1394,21 +1399,39 @@ static efi_status_t eficonfig_edit_boot_option(u16 *varname, struct eficonfig_bo 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), } };
@@ -1424,6 +1447,12 @@ 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; @@ -1456,13 +1485,20 @@ 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); } @@ -1484,11 +1520,23 @@ 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); 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); + 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; @@ -1505,6 +1553,13 @@ static efi_status_t eficonfig_edit_boot_option(u16 *varname, struct eficonfig_bo goto out; } } + if (fdt_dp) { + final_dp = efi_dp_merge(final_dp, &final_dp_size, fdt_dp); + if (!final_dp) { + ret = EFI_OUT_OF_RESOURCES; + goto out; + } + }
if (utf16_utf8_strlen(bo->optional_data)) { len = utf16_utf8_strlen(bo->optional_data) + 1; @@ -1522,9 +1577,12 @@ out: 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(fdt_device_dp); + efi_free_pool(fdt_dp); efi_free_pool(final_dp);
return ret;