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/*
* Copyright (c) 2016-2021, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <common/bl_common.h>
#include <common/desc_image_load.h>
#if defined(SPD_spmd)
#include <plat/arm/common/fconf_arm_sp_getter.h>
#endif
#include <plat/arm/common/plat_arm.h>
#include <plat/common/platform.h>
#pragma weak plat_flush_next_bl_params
#pragma weak plat_get_bl_image_load_info
#pragma weak plat_get_next_bl_params
static bl_params_t *next_bl_params_cpy_ptr;
/*******************************************************************************
* This function flushes the data structures so that they are visible
* in memory for the next BL image.
******************************************************************************/
void plat_flush_next_bl_params(void)
{
assert(next_bl_params_cpy_ptr != NULL);
flush_bl_params_desc_args(bl_mem_params_desc_ptr,
bl_mem_params_desc_num,
next_bl_params_cpy_ptr);
}
#if defined(SPD_spmd) && BL2_ENABLE_SP_LOAD
/*******************************************************************************
* This function appends Secure Partitions to list of loadable images.
******************************************************************************/
static void plat_add_sp_images_load_info(struct bl_load_info *load_info)
{
bl_load_info_node_t *curr_node = load_info->head;
bl_load_info_node_t *prev_node;
/* Shortcut for empty SP list */
if (sp_mem_params_descs[0].image_id == 0) {
ERROR("No Secure Partition Image available\n");
return;
}
/* Traverse through the bl images list */
do {
curr_node = curr_node->next_load_info;
} while (curr_node->next_load_info != NULL);
prev_node = curr_node;
for (unsigned int index = 0; index < MAX_SP_IDS; index++) {
if (sp_mem_params_descs[index].image_id == 0) {
return;
}
curr_node = &sp_mem_params_descs[index].load_node_mem;
/* Populate the image information */
curr_node->image_id = sp_mem_params_descs[index].image_id;
curr_node->image_info = &sp_mem_params_descs[index].image_info;
prev_node->next_load_info = curr_node;
prev_node = curr_node;
}
INFO("Reached Max number of SPs\n");
}
#endif
/*******************************************************************************
* This function returns the list of loadable images.
******************************************************************************/
struct bl_load_info *plat_get_bl_image_load_info(void)
{
#if defined(SPD_spmd) && BL2_ENABLE_SP_LOAD
bl_load_info_t *bl_load_info;
bl_load_info = get_bl_load_info_from_mem_params_desc();
plat_add_sp_images_load_info(bl_load_info);
return bl_load_info;
#else
return get_bl_load_info_from_mem_params_desc();
#endif
}
/*******************************************************************************
* ARM helper function to return the list of executable images.Since the default
* descriptors are allocated within BL2 RW memory, this prevents BL31/BL32
* overlay of BL2 memory. Hence this function also copies the descriptors to a
* pre-allocated memory indicated by ARM_BL2_MEM_DESC_BASE.
******************************************************************************/
struct bl_params *arm_get_next_bl_params(void)
{
bl_mem_params_node_t *bl2_mem_params_descs_cpy
= (bl_mem_params_node_t *)ARM_BL2_MEM_DESC_BASE;
const bl_params_t *next_bl_params;
next_bl_params_cpy_ptr =
(bl_params_t *)(ARM_BL2_MEM_DESC_BASE +
(bl_mem_params_desc_num * sizeof(bl_mem_params_node_t)));
/*
* Copy the memory descriptors to ARM_BL2_MEM_DESC_BASE area.
*/
(void) memcpy(bl2_mem_params_descs_cpy, bl_mem_params_desc_ptr,
(bl_mem_params_desc_num * sizeof(bl_mem_params_node_t)));
/*
* Modify the global 'bl_mem_params_desc_ptr' to point to the
* copied location.
*/
bl_mem_params_desc_ptr = bl2_mem_params_descs_cpy;
next_bl_params = get_next_bl_params_from_mem_params_desc();
assert(next_bl_params != NULL);
/*
* Copy 'next_bl_params' to the reserved location after the copied
* memory descriptors.
*/
(void) memcpy(next_bl_params_cpy_ptr, next_bl_params,
(sizeof(bl_params_t)));
populate_next_bl_params_config(next_bl_params_cpy_ptr);
return next_bl_params_cpy_ptr;
}
/*******************************************************************************
* This function returns the list of executable images
******************************************************************************/
struct bl_params *plat_get_next_bl_params(void)
{
return arm_get_next_bl_params();
}
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