blob: bcf9f8956566e4566d3102512498fa2d8deb1b59 [file] [log] [blame]
* Copyright (c) 2015-2021, Arm Limited and Contributors. All rights reserved.
* SPDX-License-Identifier: BSD-3-Clause
#include <assert.h>
#include <errno.h>
#include <platform_def.h>
#include <arch_helpers.h>
#include <bl1/bl1.h>
#include <common/bl_common.h>
#include <common/debug.h>
#include <plat/common/platform.h>
* The following platform functions are weakly defined. They
* are default implementations that allow BL1 to compile in
* absence of real definitions. The Platforms may override
* with more complex definitions.
#pragma weak bl1_plat_get_next_image_id
#pragma weak bl1_plat_set_ep_info
#pragma weak bl1_plat_get_image_desc
#pragma weak bl1_plat_fwu_done
#pragma weak bl1_plat_handle_pre_image_load
#pragma weak bl1_plat_handle_post_image_load
unsigned int bl1_plat_get_next_image_id(void)
/* BL2 load will be done by default. */
return BL2_IMAGE_ID;
void bl1_plat_set_ep_info(unsigned int image_id,
struct entry_point_info *ep_info)
int bl1_plat_handle_pre_image_load(unsigned int image_id)
return 0;
* Following is the default definition that always
* returns BL2 image details.
struct image_desc *bl1_plat_get_image_desc(unsigned int image_id)
static image_desc_t bl2_img_desc = BL2_IMAGE_DESC;
return &bl2_img_desc;
__dead2 void bl1_plat_fwu_done(void *client_cookie, void *reserved)
while (true)
* The Platforms must override with real definition.
#pragma weak bl1_plat_mem_check
int bl1_plat_mem_check(uintptr_t mem_base, unsigned int mem_size,
unsigned int flags)
return -ENOMEM;
* Default implementation for bl1_plat_handle_post_image_load(). This function
* populates the default arguments to BL2. The BL2 memory layout structure
* is allocated and the calculated layout is populated in arg1 to BL2.
int bl1_plat_handle_post_image_load(unsigned int image_id)
meminfo_t *bl2_secram_layout;
meminfo_t *bl1_secram_layout;
image_desc_t *image_desc;
entry_point_info_t *ep_info;
if (image_id != BL2_IMAGE_ID)
return 0;
/* Get the image descriptor */
image_desc = bl1_plat_get_image_desc(BL2_IMAGE_ID);
assert(image_desc != NULL);
/* Get the entry point info */
ep_info = &image_desc->ep_info;
/* Find out how much free trusted ram remains after BL1 load */
bl1_secram_layout = bl1_plat_sec_mem_layout();
* Create a new layout of memory for BL2 as seen by BL1 i.e.
* tell it the amount of total and free memory available.
* This layout is created at the first free address visible
* to BL2. BL2 will read the memory layout before using its
* memory for other purposes.
bl2_secram_layout = (meminfo_t *) bl1_secram_layout->total_base;
bl1_calc_bl2_mem_layout(bl1_secram_layout, bl2_secram_layout);
ep_info->args.arg1 = (uintptr_t)bl2_secram_layout;
VERBOSE("BL1: BL2 memory layout address = %p\n",
(void *) bl2_secram_layout);
return 0;