diff options
Diffstat (limited to 'drivers/firmware/efi/libstub/file.c')
| -rw-r--r-- | drivers/firmware/efi/libstub/file.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/firmware/efi/libstub/file.c b/drivers/firmware/efi/libstub/file.c index dd95f330fe6e..f756c61396e9 100644 --- a/drivers/firmware/efi/libstub/file.c +++ b/drivers/firmware/efi/libstub/file.c @@ -66,10 +66,28 @@ static efi_status_t efi_open_file(efi_file_protocol_t *volume, static efi_status_t efi_open_volume(efi_loaded_image_t *image, efi_file_protocol_t **fh) { + struct efi_vendor_dev_path *dp = image->file_path; + efi_guid_t li_proto = LOADED_IMAGE_PROTOCOL_GUID; efi_guid_t fs_proto = EFI_FILE_SYSTEM_GUID; efi_simple_file_system_protocol_t *io; efi_status_t status; + // If we are using EFI zboot, we should look for the file system + // protocol on the parent image's handle instead + if (IS_ENABLED(CONFIG_EFI_ZBOOT) && + image->parent_handle != NULL && + dp != NULL && + dp->header.type == EFI_DEV_MEDIA && + dp->header.sub_type == EFI_DEV_MEDIA_VENDOR && + !efi_guidcmp(dp->vendorguid, LINUX_EFI_ZBOOT_MEDIA_GUID)) { + status = efi_bs_call(handle_protocol, image->parent_handle, + &li_proto, (void *)&image); + if (status != EFI_SUCCESS) { + efi_err("Failed to locate parent image handle\n"); + return status; + } + } + status = efi_bs_call(handle_protocol, image->device_handle, &fs_proto, (void **)&io); if (status != EFI_SUCCESS) { @@ -136,7 +154,7 @@ efi_status_t handle_cmdline_files(efi_loaded_image_t *image, unsigned long *load_size) { const efi_char16_t *cmdline = image->load_options; - int cmdline_len = image->load_options_size; + u32 cmdline_len = image->load_options_size; unsigned long efi_chunk_size = ULONG_MAX; efi_file_protocol_t *volume = NULL; efi_file_protocol_t *file; @@ -238,6 +256,9 @@ efi_status_t handle_cmdline_files(efi_loaded_image_t *image, if (volume) volume->close(volume); + + if (*load_size == 0) + return EFI_NOT_READY; return EFI_SUCCESS; err_close_file: |