151 lines
3.1 KiB
C
151 lines
3.1 KiB
C
/*
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* Copyright (c) 2017, 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 <arch_helpers.h>
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#include <assert.h>
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#include <debug.h>
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#include <firmware_image_package.h>
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#include <io_block.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 <mmio.h>
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#include <partition/partition.h>
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#include <semihosting.h>
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#include <string.h>
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#include <tbbr_img_def.h>
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#include <utils.h>
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#include "platform_def.h"
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static const io_dev_connector_t *mmap_dev_con;
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static const io_dev_connector_t *fip_dev_con;
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static uintptr_t mmap_dev_handle;
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static uintptr_t fip_dev_handle;
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static int open_mmap(const uintptr_t spec);
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static int open_fip(const uintptr_t spec);
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static const io_block_spec_t loader_fip_spec = {
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.offset = FIP_BASE,
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.length = FIP_SIZE
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};
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static const io_uuid_spec_t bl2_uuid_spec = {
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.uuid = UUID_TRUSTED_BOOT_FIRMWARE_BL2,
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};
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static const io_uuid_spec_t bl31_uuid_spec = {
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.uuid = UUID_EL3_RUNTIME_FIRMWARE_BL31,
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};
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static const io_uuid_spec_t bl33_uuid_spec = {
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.uuid = UUID_NON_TRUSTED_FIRMWARE_BL33,
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};
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struct plat_io_policy {
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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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[FIP_IMAGE_ID] = {
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&mmap_dev_handle,
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(uintptr_t)&loader_fip_spec,
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open_mmap
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},
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[BL2_IMAGE_ID] = {
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&fip_dev_handle,
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(uintptr_t)&bl2_uuid_spec,
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open_fip
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},
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[BL31_IMAGE_ID] = {
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&fip_dev_handle,
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(uintptr_t)&bl31_uuid_spec,
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open_fip
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},
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[BL33_IMAGE_ID] = {
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&fip_dev_handle,
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(uintptr_t)&bl33_uuid_spec,
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open_fip
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},
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};
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static int open_mmap(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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result = io_dev_init(mmap_dev_handle, (uintptr_t)NULL);
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if (result == 0) {
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result = io_open(mmap_dev_handle, spec, &local_image_handle);
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if (result == 0) {
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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_fip(const uintptr_t spec)
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{
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uintptr_t local_image_handle;
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int result;
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result = io_dev_init(fip_dev_handle, (uintptr_t) FIP_IMAGE_ID);
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if (result == 0) {
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result = io_open(fip_dev_handle, spec, &local_image_handle);
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if (result == 0) {
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io_close(local_image_handle);
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} else {
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VERBOSE("error opening fip\n");
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}
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} else {
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VERBOSE("error initializing fip\n");
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}
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return result;
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}
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int plat_get_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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const struct plat_io_policy *policy;
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int result;
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assert(image_id < ARRAY_SIZE(policies));
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policy = &policies[image_id];
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result = policy->check(policy->image_spec);
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assert(result == 0);
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*image_spec = policy->image_spec;
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*dev_handle = *(policy->dev_handle);
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return result;
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}
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void plat_io_setup(void)
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{
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int result;
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result = register_io_dev_memmap(&mmap_dev_con);
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assert(result == 0);
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result = register_io_dev_fip(&fip_dev_con);
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assert(result == 0);
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result = io_dev_open(fip_dev_con, (uintptr_t)&loader_fip_spec,
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&fip_dev_handle);
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assert(result == 0);
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result = io_dev_open(mmap_dev_con, (uintptr_t)NULL, &mmap_dev_handle);
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assert(result == 0);
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(void) result;
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}
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