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https://github.com/ARM-software/arm-trusted-firmware.git
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eab78e9ba4
Subsequent patches will provide a solution to do the BL2 hash measurement and recording in BL1 itself, hence in preparation to adopt that solution remove the logic of passing BL2 hash measurement to BL2 component via TB_FW config. Change-Id: Iff9b3d4c6a236a33b942898fcdf799cbab89b724 Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
117 lines
2.9 KiB
C
117 lines
2.9 KiB
C
/*
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* Copyright (c) 2015-2021, Arm Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <errno.h>
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#include <platform_def.h>
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#include <arch_helpers.h>
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#include <bl1/bl1.h>
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#include <common/bl_common.h>
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#include <common/debug.h>
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#include <plat/common/platform.h>
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/*
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* The following platform functions are weakly defined. They
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* are default implementations that allow BL1 to compile in
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* absence of real definitions. The Platforms may override
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* with more complex definitions.
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*/
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#pragma weak bl1_plat_get_next_image_id
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#pragma weak bl1_plat_set_ep_info
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#pragma weak bl1_plat_get_image_desc
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#pragma weak bl1_plat_fwu_done
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#pragma weak bl1_plat_handle_pre_image_load
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#pragma weak bl1_plat_handle_post_image_load
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unsigned int bl1_plat_get_next_image_id(void)
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{
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/* BL2 load will be done by default. */
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return BL2_IMAGE_ID;
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}
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void bl1_plat_set_ep_info(unsigned int image_id,
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struct entry_point_info *ep_info)
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{
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}
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int bl1_plat_handle_pre_image_load(unsigned int image_id)
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{
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return 0;
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}
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/*
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* Following is the default definition that always
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* returns BL2 image details.
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*/
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struct image_desc *bl1_plat_get_image_desc(unsigned int image_id)
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{
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static image_desc_t bl2_img_desc = BL2_IMAGE_DESC;
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return &bl2_img_desc;
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}
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__dead2 void bl1_plat_fwu_done(void *client_cookie, void *reserved)
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{
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while (true)
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wfi();
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}
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/*
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* The Platforms must override with real definition.
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*/
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#pragma weak bl1_plat_mem_check
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int bl1_plat_mem_check(uintptr_t mem_base, unsigned int mem_size,
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unsigned int flags)
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{
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assert(0);
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return -ENOMEM;
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}
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/*
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* Default implementation for bl1_plat_handle_post_image_load(). This function
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* populates the default arguments to BL2. The BL2 memory layout structure
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* is allocated and the calculated layout is populated in arg1 to BL2.
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*/
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int bl1_plat_handle_post_image_load(unsigned int image_id)
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{
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meminfo_t *bl2_secram_layout;
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meminfo_t *bl1_secram_layout;
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image_desc_t *image_desc;
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entry_point_info_t *ep_info;
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if (image_id != BL2_IMAGE_ID)
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return 0;
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/* Get the image descriptor */
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image_desc = bl1_plat_get_image_desc(BL2_IMAGE_ID);
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assert(image_desc != NULL);
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/* Get the entry point info */
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ep_info = &image_desc->ep_info;
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/* Find out how much free trusted ram remains after BL1 load */
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bl1_secram_layout = bl1_plat_sec_mem_layout();
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/*
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* Create a new layout of memory for BL2 as seen by BL1 i.e.
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* tell it the amount of total and free memory available.
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* This layout is created at the first free address visible
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* to BL2. BL2 will read the memory layout before using its
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* memory for other purposes.
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*/
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bl2_secram_layout = (meminfo_t *) bl1_secram_layout->total_base;
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bl1_calc_bl2_mem_layout(bl1_secram_layout, bl2_secram_layout);
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ep_info->args.arg1 = (uintptr_t)bl2_secram_layout;
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VERBOSE("BL1: BL2 memory layout address = %p\n",
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(void *) bl2_secram_layout);
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return 0;
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}
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