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efi_loader: output load options in helloworld 

We need to test if we pass a valid image handle when loading
and EFI application. This cannot be done in efi_selftest as
it is not loaded as an image.

So let's enhance helloworld a bit.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt 2017-11-26 14:05:20 +01:00 committed by Alexander Graf
parent c51e7df941
commit bbf75dd934
1 changed files with 35 additions and 2 deletions
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37
lib/efi_loader/helloworld.c
View File

@ -5,19 +5,52 @@
* Written by Simon Glass <sjg@chromium.org>
*
* SPDX-License-Identifier: GPL-2.0+
*
* This program demonstrates calling a boottime service.
* It writes a greeting and the load options to the console.
*/
#include <common.h>
#include <efi_api.h>
/*
* Entry point of the EFI application.
*
* @handle handle of the loaded image
* @systable system table
* @return status code
*/
efi_status_t EFIAPI efi_main(efi_handle_t handle,
struct efi_system_table *systable)
{
struct efi_simple_text_output_protocol *con_out = systable->con_out;
struct efi_boot_services *boottime = systable->boottime;
struct efi_loaded_image *loaded_image;
const efi_guid_t loaded_image_guid = LOADED_IMAGE_GUID;
efi_status_t ret;
con_out->output_string(con_out, L"Hello, world!\n");
boottime->exit(handle, 0, 0, NULL);
return EFI_SUCCESS;
/* Get the loaded image protocol */
ret = boottime->handle_protocol(handle, &loaded_image_guid,
(void **)&loaded_image);
if (ret != EFI_SUCCESS) {
con_out->output_string(con_out,
L"Cannot open loaded image protocol\n");
goto out;
}
/* Output the load options */
con_out->output_string(con_out, L"Load options: ");
if (loaded_image->load_options_size && loaded_image->load_options)
con_out->output_string(con_out,
(u16 *)loaded_image->load_options);
else
con_out->output_string(con_out, L"<none>");
con_out->output_string(con_out, L"\n");
out:
boottime->exit(handle, ret, 0, NULL);
/* We should never arrive here */
return ret;
}