339 lines
8.3 KiB
C
339 lines
8.3 KiB
C
/*
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* Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <assert.h>
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#include <debug.h>
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#include <io_driver.h>
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#include <io_fip.h>
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#include <io_memmap.h>
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#include <io_storage.h>
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#include <io_semihosting.h>
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#include <platform_def.h>
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#include <semihosting.h> /* For FOPEN_MODE_... */
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#include <string.h>
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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_spec;
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static uintptr_t sh_init_params;
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static uintptr_t sh_dev_handle;
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static const io_dev_connector_t *fip_dev_con;
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static uintptr_t fip_dev_spec;
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static uintptr_t fip_dev_handle;
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static const io_dev_connector_t *memmap_dev_con;
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static uintptr_t memmap_dev_spec;
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static uintptr_t memmap_init_params;
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static uintptr_t memmap_dev_handle;
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static const io_block_spec_t fip_block_spec = {
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.offset = FLASH0_BASE,
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.length = FLASH0_SIZE
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};
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static const io_file_spec_t bl2_file_spec = {
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.path = BL2_IMAGE_NAME,
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.mode = FOPEN_MODE_RB
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};
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static const io_file_spec_t bl31_file_spec = {
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.path = BL31_IMAGE_NAME,
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.mode = FOPEN_MODE_RB
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};
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static const io_file_spec_t bl32_file_spec = {
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.path = BL32_IMAGE_NAME,
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.mode = FOPEN_MODE_RB
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};
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static const io_file_spec_t bl33_file_spec = {
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.path = BL33_IMAGE_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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static const io_file_spec_t bl2_cert_file_spec = {
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.path = BL2_CERT_NAME,
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.mode = FOPEN_MODE_RB
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};
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static const io_file_spec_t trusted_key_cert_file_spec = {
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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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static const io_file_spec_t bl30_key_cert_file_spec = {
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.path = BL30_KEY_CERT_NAME,
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.mode = FOPEN_MODE_RB
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};
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static const io_file_spec_t bl31_key_cert_file_spec = {
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.path = BL31_KEY_CERT_NAME,
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.mode = FOPEN_MODE_RB
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};
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static const io_file_spec_t bl32_key_cert_file_spec = {
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.path = BL32_KEY_CERT_NAME,
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.mode = FOPEN_MODE_RB
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};
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static const io_file_spec_t bl33_key_cert_file_spec = {
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.path = BL33_KEY_CERT_NAME,
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.mode = FOPEN_MODE_RB
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};
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static const io_file_spec_t bl30_cert_file_spec = {
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.path = BL30_CERT_NAME,
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.mode = FOPEN_MODE_RB
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};
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static const io_file_spec_t bl31_cert_file_spec = {
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.path = BL31_CERT_NAME,
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.mode = FOPEN_MODE_RB
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};
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static const io_file_spec_t bl32_cert_file_spec = {
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.path = BL32_CERT_NAME,
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.mode = FOPEN_MODE_RB
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};
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static const io_file_spec_t bl33_cert_file_spec = {
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.path = BL33_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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static int open_fip(const uintptr_t spec);
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static int open_memmap(const uintptr_t spec);
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struct plat_io_policy {
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char *image_name;
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uintptr_t *dev_handle;
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uintptr_t image_spec;
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int (*check)(const uintptr_t spec);
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};
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static const struct plat_io_policy policies[] = {
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{
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FIP_IMAGE_NAME,
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&memmap_dev_handle,
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(uintptr_t)&fip_block_spec,
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open_memmap
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}, {
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BL2_IMAGE_NAME,
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&fip_dev_handle,
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(uintptr_t)&bl2_file_spec,
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open_fip
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}, {
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BL31_IMAGE_NAME,
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&fip_dev_handle,
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(uintptr_t)&bl31_file_spec,
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open_fip
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}, {
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BL32_IMAGE_NAME,
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&fip_dev_handle,
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(uintptr_t)&bl32_file_spec,
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open_fip
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}, {
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BL33_IMAGE_NAME,
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&fip_dev_handle,
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(uintptr_t)&bl33_file_spec,
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open_fip
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}, {
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#if TRUSTED_BOARD_BOOT
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BL2_CERT_NAME,
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&fip_dev_handle,
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(uintptr_t)&bl2_cert_file_spec,
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open_fip
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}, {
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TRUSTED_KEY_CERT_NAME,
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&fip_dev_handle,
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(uintptr_t)&trusted_key_cert_file_spec,
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open_fip
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}, {
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BL30_KEY_CERT_NAME,
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&fip_dev_handle,
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(uintptr_t)&bl30_key_cert_file_spec,
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open_fip
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}, {
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BL31_KEY_CERT_NAME,
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&fip_dev_handle,
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(uintptr_t)&bl31_key_cert_file_spec,
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open_fip
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}, {
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BL32_KEY_CERT_NAME,
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&fip_dev_handle,
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(uintptr_t)&bl32_key_cert_file_spec,
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open_fip
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}, {
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BL33_KEY_CERT_NAME,
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&fip_dev_handle,
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(uintptr_t)&bl33_key_cert_file_spec,
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open_fip
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}, {
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BL30_CERT_NAME,
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&fip_dev_handle,
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(uintptr_t)&bl30_cert_file_spec,
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open_fip
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}, {
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BL31_CERT_NAME,
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&fip_dev_handle,
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(uintptr_t)&bl31_cert_file_spec,
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open_fip
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}, {
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BL32_CERT_NAME,
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&fip_dev_handle,
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(uintptr_t)&bl32_cert_file_spec,
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open_fip
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}, {
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BL33_CERT_NAME,
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&fip_dev_handle,
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(uintptr_t)&bl33_cert_file_spec,
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open_fip
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}, {
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#endif /* TRUSTED_BOARD_BOOT */
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0, 0, 0
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}
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};
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static int open_fip(const uintptr_t spec)
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{
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int result = IO_FAIL;
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/* See if a Firmware Image Package is available */
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result = io_dev_init(fip_dev_handle, (uintptr_t)FIP_IMAGE_NAME);
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if (result == IO_SUCCESS) {
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VERBOSE("Using FIP\n");
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/*TODO: Check image defined in spec is present in FIP. */
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}
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return result;
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}
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static int open_memmap(const uintptr_t spec)
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{
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int result = IO_FAIL;
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uintptr_t local_image_handle;
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result = io_dev_init(memmap_dev_handle, memmap_init_params);
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if (result == IO_SUCCESS) {
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result = io_open(memmap_dev_handle, spec, &local_image_handle);
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if (result == IO_SUCCESS) {
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VERBOSE("Using Memmap 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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static int open_semihosting(const uintptr_t spec)
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{
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int result = IO_FAIL;
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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, sh_init_params);
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if (result == IO_SUCCESS) {
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result = io_open(sh_dev_handle, spec, &local_image_handle);
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if (result == IO_SUCCESS) {
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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 fvp_io_setup (void)
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{
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int io_result = IO_FAIL;
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/* Register the 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 == IO_SUCCESS);
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io_result = register_io_dev_fip(&fip_dev_con);
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assert(io_result == IO_SUCCESS);
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io_result = register_io_dev_memmap(&memmap_dev_con);
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assert(io_result == IO_SUCCESS);
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/* Open connections to devices and cache the handles */
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io_result = io_dev_open(sh_dev_con, sh_dev_spec, &sh_dev_handle);
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assert(io_result == IO_SUCCESS);
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io_result = io_dev_open(fip_dev_con, fip_dev_spec, &fip_dev_handle);
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assert(io_result == IO_SUCCESS);
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io_result = io_dev_open(memmap_dev_con, memmap_dev_spec,
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&memmap_dev_handle);
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assert(io_result == IO_SUCCESS);
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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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/* Return an IO device handle and specification which can be used to access
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* an image. Use this to enforce platform load policy */
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int plat_get_image_source(const char *image_name, uintptr_t *dev_handle,
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uintptr_t *image_spec)
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{
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int result = IO_FAIL;
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const struct plat_io_policy *policy;
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if ((image_name != NULL) && (dev_handle != NULL) &&
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(image_spec != NULL)) {
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policy = policies;
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while (policy->image_name != NULL) {
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if (strcmp(policy->image_name, image_name) == 0) {
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result = policy->check(policy->image_spec);
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if (result == IO_SUCCESS) {
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*image_spec = policy->image_spec;
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*dev_handle = *(policy->dev_handle);
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break;
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} else {
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result = open_semihosting(
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policy->image_spec);
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if (result == IO_SUCCESS) {
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*dev_handle = sh_dev_handle;
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*image_spec =
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policy->image_spec;
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}
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}
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}
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policy++;
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}
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} else {
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result = IO_FAIL;
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}
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return result;
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}
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