From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:13:47 +0200 Subject: Adding upstream version 2.8.0+dfsg. Signed-off-by: Daniel Baumann --- plat/arm/common/arm_image_load.c | 141 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 141 insertions(+) create mode 100644 plat/arm/common/arm_image_load.c (limited to 'plat/arm/common/arm_image_load.c') diff --git a/plat/arm/common/arm_image_load.c b/plat/arm/common/arm_image_load.c new file mode 100644 index 0000000..c411c6c --- /dev/null +++ b/plat/arm/common/arm_image_load.c @@ -0,0 +1,141 @@ +/* + * Copyright (c) 2016-2021, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include +#include +#include +#if defined(SPD_spmd) +#include +#endif +#include +#include + +#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(); +} + -- cgit v1.2.3