mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 22:33:18 +00:00
731ab362d5
* Replace the OpenProtocol() call by efi_search_protocol(). * Remove the CloseProtocol() call. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
144 lines
3.4 KiB
C
144 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* EFI boot manager
|
|
*
|
|
* Copyright (c) 2018 AKASHI Takahiro, et.al.
|
|
*/
|
|
|
|
#define LOG_CATEGORY LOGC_EFI
|
|
|
|
#include <common.h>
|
|
#include <charset.h>
|
|
#include <log.h>
|
|
#include <malloc.h>
|
|
#include <efi_loader.h>
|
|
#include <asm/unaligned.h>
|
|
|
|
/**
|
|
* efi_set_load_options() - set the load options of a loaded image
|
|
*
|
|
* @handle: the image handle
|
|
* @load_options_size: size of load options
|
|
* @load_options: pointer to load options
|
|
* Return: status code
|
|
*/
|
|
efi_status_t efi_set_load_options(efi_handle_t handle,
|
|
efi_uintn_t load_options_size,
|
|
void *load_options)
|
|
{
|
|
struct efi_loaded_image *loaded_image_info;
|
|
struct efi_handler *handler;
|
|
efi_status_t ret;
|
|
|
|
ret = efi_search_protocol(handle, &efi_guid_loaded_image, &handler);
|
|
loaded_image_info = handler->protocol_interface;
|
|
if (ret != EFI_SUCCESS)
|
|
return EFI_INVALID_PARAMETER;
|
|
|
|
loaded_image_info->load_options = load_options;
|
|
loaded_image_info->load_options_size = load_options_size;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* efi_deserialize_load_option() - parse serialized data
|
|
*
|
|
* Parse serialized data describing a load option and transform it to the
|
|
* efi_load_option structure.
|
|
*
|
|
* @lo: pointer to target
|
|
* @data: serialized data
|
|
* @size: size of the load option, on return size of the optional data
|
|
* Return: status code
|
|
*/
|
|
efi_status_t efi_deserialize_load_option(struct efi_load_option *lo, u8 *data,
|
|
efi_uintn_t *size)
|
|
{
|
|
efi_uintn_t len;
|
|
|
|
len = sizeof(u32);
|
|
if (*size < len + 2 * sizeof(u16))
|
|
return EFI_INVALID_PARAMETER;
|
|
lo->attributes = get_unaligned_le32(data);
|
|
data += len;
|
|
*size -= len;
|
|
|
|
len = sizeof(u16);
|
|
lo->file_path_length = get_unaligned_le16(data);
|
|
data += len;
|
|
*size -= len;
|
|
|
|
lo->label = (u16 *)data;
|
|
len = u16_strnlen(lo->label, *size / sizeof(u16) - 1);
|
|
if (lo->label[len])
|
|
return EFI_INVALID_PARAMETER;
|
|
len = (len + 1) * sizeof(u16);
|
|
if (*size < len)
|
|
return EFI_INVALID_PARAMETER;
|
|
data += len;
|
|
*size -= len;
|
|
|
|
len = lo->file_path_length;
|
|
if (*size < len)
|
|
return EFI_INVALID_PARAMETER;
|
|
lo->file_path = (struct efi_device_path *)data;
|
|
if (efi_dp_check_length(lo->file_path, len) < 0)
|
|
return EFI_INVALID_PARAMETER;
|
|
data += len;
|
|
*size -= len;
|
|
|
|
lo->optional_data = data;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* efi_serialize_load_option() - serialize load option
|
|
*
|
|
* Serialize efi_load_option structure into byte stream for BootXXXX.
|
|
*
|
|
* @data: buffer for serialized data
|
|
* @lo: load option
|
|
* Return: size of allocated buffer
|
|
*/
|
|
unsigned long efi_serialize_load_option(struct efi_load_option *lo, u8 **data)
|
|
{
|
|
unsigned long label_len;
|
|
unsigned long size;
|
|
u8 *p;
|
|
|
|
label_len = u16_strsize(lo->label);
|
|
|
|
/* total size */
|
|
size = sizeof(lo->attributes);
|
|
size += sizeof(lo->file_path_length);
|
|
size += label_len;
|
|
size += lo->file_path_length;
|
|
if (lo->optional_data)
|
|
size += (utf8_utf16_strlen((const char *)lo->optional_data)
|
|
+ 1) * sizeof(u16);
|
|
p = malloc(size);
|
|
if (!p)
|
|
return 0;
|
|
|
|
/* copy data */
|
|
*data = p;
|
|
memcpy(p, &lo->attributes, sizeof(lo->attributes));
|
|
p += sizeof(lo->attributes);
|
|
|
|
memcpy(p, &lo->file_path_length, sizeof(lo->file_path_length));
|
|
p += sizeof(lo->file_path_length);
|
|
|
|
memcpy(p, lo->label, label_len);
|
|
p += label_len;
|
|
|
|
memcpy(p, lo->file_path, lo->file_path_length);
|
|
p += lo->file_path_length;
|
|
|
|
if (lo->optional_data) {
|
|
utf8_utf16_strcpy((u16 **)&p, (const char *)lo->optional_data);
|
|
p += sizeof(u16); /* size of trailing \0 */
|
|
}
|
|
return size;
|
|
}
|