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/common/plat_bl1_common.c | 117 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 117 insertions(+) create mode 100644 plat/common/plat_bl1_common.c (limited to 'plat/common/plat_bl1_common.c') diff --git a/plat/common/plat_bl1_common.c b/plat/common/plat_bl1_common.c new file mode 100644 index 0000000..bcf9f89 --- /dev/null +++ b/plat/common/plat_bl1_common.c @@ -0,0 +1,117 @@ +/* + * Copyright (c) 2015-2021, Arm Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include +#include + +#include + +#include +#include +#include +#include +#include + +/* + * 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) + wfi(); +} + +/* + * 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) +{ + assert(0); + 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; +} -- cgit v1.2.3