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https://github.com/ARM-software/arm-trusted-firmware.git
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cab0b5b045
The patch adds the necessary changes to load HW_CONFIG in BL2 for ARM Platforms : 1. The load address of HW_CONFIG is specified via the `hw_config_addr` property in TB_FW_CONFIG is loaded by BL1. The `hw_config_max_size` property defines the maximum size to be expected for the HW_CONFIG. The `arm_dyn_cfg_helpers.c` and corresponding header implements utility functions to parse these DT properties defined. The `arm_dyn_cfg.c` implements wrappers to these helpers to enable them to be invoked from ARM platform layer. 2. `HW_CONFIG` is added to the `bl2_mem_params_descs[]` array which is the list of images to be loaded by BL2. 3. The `libfdt` sources are now included when BL2 is built 4. A new helper `populate_next_bl_params_config()` is introduced in desc_image_load.c to populate the subsequent executable BL images with the `hw_config` and the corresponding `fw_config` if available. The `plat_get_next_bl_params()` API for ARM platforms is modified to invoke this new helper. 5. The implementation of `bl2_early_platform_setup2()` is modified to consider `arg0` as well in addition to `arg1` passed from BL1. 6. Bump up the BL2 size for Juno to accommodate the inclusion of libfdt. Change-Id: I80f1554adec41753e0d179a5237364f04fe13a3f Signed-off-by: Soby Mathew <soby.mathew@arm.com>
150 lines
3.6 KiB
C
150 lines
3.6 KiB
C
/*
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* Copyright (c) 2014-2018, 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 <common_def.h>
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#include <debug.h>
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#include <io_driver.h>
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#include <io_semihosting.h>
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#include <io_storage.h>
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#include <plat_arm.h>
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#include <semihosting.h> /* For FOPEN_MODE_... */
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/* Semihosting filenames */
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#define BL2_IMAGE_NAME "bl2.bin"
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#define BL31_IMAGE_NAME "bl31.bin"
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#define BL32_IMAGE_NAME "bl32.bin"
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#define BL33_IMAGE_NAME "bl33.bin"
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#define TB_FW_CONFIG_NAME "fvp_tb_fw_config.dtb"
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#define HW_CONFIG_NAME "hw_config.dtb"
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#if TRUSTED_BOARD_BOOT
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#define TRUSTED_BOOT_FW_CERT_NAME "tb_fw.crt"
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#define TRUSTED_KEY_CERT_NAME "trusted_key.crt"
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#define SOC_FW_KEY_CERT_NAME "soc_fw_key.crt"
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#define TOS_FW_KEY_CERT_NAME "tos_fw_key.crt"
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#define NT_FW_KEY_CERT_NAME "nt_fw_key.crt"
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#define SOC_FW_CONTENT_CERT_NAME "soc_fw_content.crt"
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#define TOS_FW_CONTENT_CERT_NAME "tos_fw_content.crt"
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#define NT_FW_CONTENT_CERT_NAME "nt_fw_content.crt"
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#endif /* TRUSTED_BOARD_BOOT */
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/* IO devices */
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static const io_dev_connector_t *sh_dev_con;
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static uintptr_t sh_dev_handle;
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static const io_file_spec_t sh_file_spec[] = {
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[BL2_IMAGE_ID] = {
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.path = BL2_IMAGE_NAME,
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.mode = FOPEN_MODE_RB
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},
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[BL31_IMAGE_ID] = {
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.path = BL31_IMAGE_NAME,
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.mode = FOPEN_MODE_RB
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},
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[BL32_IMAGE_ID] = {
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.path = BL32_IMAGE_NAME,
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.mode = FOPEN_MODE_RB
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},
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[BL33_IMAGE_ID] = {
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.path = BL33_IMAGE_NAME,
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.mode = FOPEN_MODE_RB
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},
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[TB_FW_CONFIG_ID] = {
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.path = TB_FW_CONFIG_NAME,
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.mode = FOPEN_MODE_RB
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},
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[HW_CONFIG_ID] = {
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.path = HW_CONFIG_NAME,
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.mode = FOPEN_MODE_RB
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},
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#if TRUSTED_BOARD_BOOT
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[TRUSTED_BOOT_FW_CERT_ID] = {
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.path = TRUSTED_BOOT_FW_CERT_NAME,
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.mode = FOPEN_MODE_RB
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},
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[TRUSTED_KEY_CERT_ID] = {
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.path = TRUSTED_KEY_CERT_NAME,
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.mode = FOPEN_MODE_RB
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},
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[SOC_FW_KEY_CERT_ID] = {
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.path = SOC_FW_KEY_CERT_NAME,
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.mode = FOPEN_MODE_RB
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},
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[TRUSTED_OS_FW_KEY_CERT_ID] = {
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.path = TOS_FW_KEY_CERT_NAME,
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.mode = FOPEN_MODE_RB
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},
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[NON_TRUSTED_FW_KEY_CERT_ID] = {
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.path = NT_FW_KEY_CERT_NAME,
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.mode = FOPEN_MODE_RB
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},
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[SOC_FW_CONTENT_CERT_ID] = {
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.path = SOC_FW_CONTENT_CERT_NAME,
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.mode = FOPEN_MODE_RB
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},
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[TRUSTED_OS_FW_CONTENT_CERT_ID] = {
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.path = TOS_FW_CONTENT_CERT_NAME,
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.mode = FOPEN_MODE_RB
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},
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[NON_TRUSTED_FW_CONTENT_CERT_ID] = {
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.path = NT_FW_CONTENT_CERT_NAME,
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.mode = FOPEN_MODE_RB
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},
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#endif /* TRUSTED_BOARD_BOOT */
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};
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static int open_semihosting(const uintptr_t spec)
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{
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int result;
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uintptr_t local_image_handle;
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/* See if the file exists on semi-hosting.*/
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result = io_dev_init(sh_dev_handle, (uintptr_t)NULL);
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if (result == 0) {
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result = io_open(sh_dev_handle, spec, &local_image_handle);
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if (result == 0) {
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VERBOSE("Using Semi-hosting IO\n");
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io_close(local_image_handle);
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}
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}
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return result;
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}
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void plat_arm_io_setup(void)
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{
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int io_result;
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arm_io_setup();
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/* Register the additional IO devices on this platform */
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io_result = register_io_dev_sh(&sh_dev_con);
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assert(io_result == 0);
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/* Open connections to devices and cache the handles */
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io_result = io_dev_open(sh_dev_con, (uintptr_t)NULL, &sh_dev_handle);
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assert(io_result == 0);
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/* Ignore improbable errors in release builds */
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(void)io_result;
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}
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/*
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* FVP provides semihosting as an alternative to load images
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*/
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int plat_arm_get_alt_image_source(unsigned int image_id, uintptr_t *dev_handle,
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uintptr_t *image_spec)
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{
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int result = open_semihosting((const uintptr_t)&sh_file_spec[image_id]);
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if (result == 0) {
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*dev_handle = sh_dev_handle;
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*image_spec = (uintptr_t)&sh_file_spec[image_id];
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}
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return result;
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}
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