mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 17:07:38 +00:00
9c297a3dab
This variable is already defined by the EFI code. Drop the duplicate definition when building a 64-bit EFI app. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
108 lines
2.7 KiB
C
108 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 2015 Google, Inc
|
|
*
|
|
* EFI information obtained here:
|
|
* http://wiki.phoenix.com/wiki/index.php/EFI_BOOT_SERVICES
|
|
*
|
|
* Common EFI functions
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <debug_uart.h>
|
|
#include <errno.h>
|
|
#include <malloc.h>
|
|
#include <linux/err.h>
|
|
#include <linux/types.h>
|
|
#include <efi.h>
|
|
#include <efi_api.h>
|
|
|
|
/*
|
|
* Global declaration of gd.
|
|
*
|
|
* As we write to it before relocation we have to make sure it is not put into
|
|
* a .bss section which may overlap a .rela section. Initialization forces it
|
|
* into a .data section which cannot overlap any .rela section.
|
|
*/
|
|
struct global_data *global_data_ptr = (struct global_data *)~0;
|
|
|
|
/*
|
|
* Unfortunately we cannot access any code outside what is built especially
|
|
* for the stub. lib/string.c is already being built for the U-Boot payload
|
|
* so it uses the wrong compiler flags. Add our own memset() here.
|
|
*/
|
|
static void efi_memset(void *ptr, int ch, int size)
|
|
{
|
|
char *dest = ptr;
|
|
|
|
while (size-- > 0)
|
|
*dest++ = ch;
|
|
}
|
|
|
|
/*
|
|
* Since the EFI stub cannot access most of the U-Boot code, add our own
|
|
* simple console output functions here. The EFI app will not use these since
|
|
* it can use the normal console.
|
|
*/
|
|
void efi_putc(struct efi_priv *priv, const char ch)
|
|
{
|
|
struct efi_simple_text_output_protocol *con = priv->sys_table->con_out;
|
|
uint16_t ucode[2];
|
|
|
|
ucode[0] = ch;
|
|
ucode[1] = '\0';
|
|
con->output_string(con, ucode);
|
|
}
|
|
|
|
void efi_puts(struct efi_priv *priv, const char *str)
|
|
{
|
|
while (*str)
|
|
efi_putc(priv, *str++);
|
|
}
|
|
|
|
int efi_init(struct efi_priv *priv, const char *banner, efi_handle_t image,
|
|
struct efi_system_table *sys_table)
|
|
{
|
|
efi_guid_t loaded_image_guid = EFI_LOADED_IMAGE_PROTOCOL_GUID;
|
|
struct efi_boot_services *boot = sys_table->boottime;
|
|
struct efi_loaded_image *loaded_image;
|
|
int ret;
|
|
|
|
efi_memset(priv, '\0', sizeof(*priv));
|
|
priv->sys_table = sys_table;
|
|
priv->boot = sys_table->boottime;
|
|
priv->parent_image = image;
|
|
priv->run = sys_table->runtime;
|
|
|
|
efi_puts(priv, "U-Boot EFI ");
|
|
efi_puts(priv, banner);
|
|
efi_putc(priv, ' ');
|
|
|
|
ret = boot->open_protocol(priv->parent_image, &loaded_image_guid,
|
|
(void **)&loaded_image, priv->parent_image,
|
|
NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
|
|
if (ret) {
|
|
efi_puts(priv, "Failed to get loaded image protocol\n");
|
|
return ret;
|
|
}
|
|
priv->image_data_type = loaded_image->image_data_type;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void *efi_malloc(struct efi_priv *priv, int size, efi_status_t *retp)
|
|
{
|
|
struct efi_boot_services *boot = priv->boot;
|
|
void *buf = NULL;
|
|
|
|
*retp = boot->allocate_pool(priv->image_data_type, size, &buf);
|
|
|
|
return buf;
|
|
}
|
|
|
|
void efi_free(struct efi_priv *priv, void *ptr)
|
|
{
|
|
struct efi_boot_services *boot = priv->boot;
|
|
|
|
boot->free_pool(ptr);
|
|
}
|