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/*
* efi-image.c - barebox EFI payload support
*
* Copyright (c) 2014 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <common.h>
#include <sizes.h>
#include <memory.h>
#include <command.h>
#include <magicvar.h>
#include <init.h>
#include <driver.h>
#include <io.h>
#include <efi.h>
#include <malloc.h>
#include <string.h>
#include <linux/err.h>
#include <boot.h>
#include <fs.h>
#include <libfile.h>
#include <binfmt.h>
#include <wchar.h>
#include <mach/efi.h>
#include <mach/efi-device.h>
static int efi_execute_image(const char *file)
{
void *exe;
size_t size;
efi_handle_t handle;
efi_status_t efiret;
const char *options;
efi_loaded_image_t *loaded_image;
exe = read_file(file, &size);
if (!exe)
return -EINVAL;
efiret = BS->load_image(false, efi_parent_image, efi_device_path, exe, size,
&handle);
if (EFI_ERROR(efiret)) {
pr_err("failed to LoadImage: %s\n", efi_strerror(efiret));
return -efi_errno(efiret);;
};
efiret = BS->open_protocol(handle, &efi_loaded_image_protocol_guid,
(void **)&loaded_image,
efi_parent_image, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
if (EFI_ERROR(efiret))
return -efi_errno(efiret);
options = linux_bootargs_get();
loaded_image->load_options = strdup_char_to_wchar(options);
loaded_image->load_options_size = (strlen(options) + 1) * sizeof(wchar_t);
efiret = BS->start_image(handle, NULL, NULL);
efi_connect_all();
efi_register_devices();
return 0;
}
static int do_bootm_efi(struct image_data *data)
{
return efi_execute_image(data->os_file);
}
static struct image_handler efi_handle_tr = {
.name = "EFI Application",
.bootm = do_bootm_efi,
.filetype = filetype_exe,
};
static int efi_execute(struct binfmt_hook *b, char *file, int argc, char **argv)
{
return efi_execute_image(file);
}
static struct binfmt_hook binfmt_efi_hook = {
.type = filetype_exe,
.hook = efi_execute,
};
static int efi_register_image_handler(void)
{
register_image_handler(&efi_handle_tr);
binfmt_register(&binfmt_efi_hook);
return 0;
}
late_initcall(efi_register_image_handler);
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