mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
dec88e41e0
We should consistently use the same name for protocol GUIDs as defined in the UEFI specification. Not adhering to this rule has led to duplicate definitions for the EFI_LOADED_IMAGE_PROTOCOL_GUID. Adjust misnamed protocol GUIDs. Adjust the text for the graphics output protocol in the output of the `efidebug dh` command. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* EFI hello world
|
|
*
|
|
* Copyright (c) 2016 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*
|
|
* 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>
|
|
|
|
static const efi_guid_t loaded_image_guid = EFI_LOADED_IMAGE_PROTOCOL_GUID;
|
|
static const efi_guid_t fdt_guid = EFI_FDT_GUID;
|
|
static const efi_guid_t acpi_guid = EFI_ACPI_TABLE_GUID;
|
|
static const efi_guid_t smbios_guid = SMBIOS_TABLE_GUID;
|
|
|
|
/**
|
|
* efi_main() - 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;
|
|
efi_status_t ret;
|
|
efi_uintn_t i;
|
|
u16 rev[] = L"0.0.0";
|
|
|
|
/* UEFI requires CR LF */
|
|
con_out->output_string(con_out, L"Hello, world!\r\n");
|
|
|
|
/* Print the revision number */
|
|
rev[0] = (systable->hdr.revision >> 16) + '0';
|
|
rev[4] = systable->hdr.revision & 0xffff;
|
|
for (; rev[4] >= 10;) {
|
|
rev[4] -= 10;
|
|
++rev[2];
|
|
}
|
|
/* Third digit is only to be shown if non-zero */
|
|
if (rev[4])
|
|
rev[4] += '0';
|
|
else
|
|
rev[3] = 0;
|
|
|
|
con_out->output_string(con_out, L"Running on UEFI ");
|
|
con_out->output_string(con_out, rev);
|
|
con_out->output_string(con_out, L"\r\n");
|
|
|
|
/* 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\r\n");
|
|
goto out;
|
|
}
|
|
/* Find configuration tables */
|
|
for (i = 0; i < systable->nr_tables; ++i) {
|
|
if (!memcmp(&systable->tables[i].guid, &fdt_guid,
|
|
sizeof(efi_guid_t)))
|
|
con_out->output_string
|
|
(con_out, L"Have device tree\r\n");
|
|
if (!memcmp(&systable->tables[i].guid, &acpi_guid,
|
|
sizeof(efi_guid_t)))
|
|
con_out->output_string
|
|
(con_out, L"Have ACPI 2.0 table\r\n");
|
|
if (!memcmp(&systable->tables[i].guid, &smbios_guid,
|
|
sizeof(efi_guid_t)))
|
|
con_out->output_string
|
|
(con_out, L"Have SMBIOS table\r\n");
|
|
}
|
|
/* 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"\r\n");
|
|
|
|
out:
|
|
boottime->exit(handle, ret, 0, NULL);
|
|
|
|
/* We should never arrive here */
|
|
return ret;
|
|
}
|