blob: 623a61b77352116c227ee08ca5fab796b7a043bf [file] [log] [blame]
/*
* Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch_helpers.h>
#include <assert.h>
#include <debug.h>
#include <firmware_image_package.h>
#include <io_block.h>
#include <io_driver.h>
#include <io_fip.h>
#include <io_memmap.h>
#include <io_storage.h>
#include <mmio.h>
#include <partition/partition.h>
#include <semihosting.h>
#include <string.h>
#include <tbbr_img_def.h>
#include <utils.h>
#include "platform_def.h"
static const io_dev_connector_t *mmap_dev_con;
static const io_dev_connector_t *fip_dev_con;
static uintptr_t mmap_dev_handle;
static uintptr_t fip_dev_handle;
static int open_mmap(const uintptr_t spec);
static int open_fip(const uintptr_t spec);
static const io_block_spec_t loader_fip_spec = {
.offset = FIP_BASE,
.length = FIP_SIZE
};
static const io_uuid_spec_t bl2_uuid_spec = {
.uuid = UUID_TRUSTED_BOOT_FIRMWARE_BL2,
};
static const io_uuid_spec_t bl31_uuid_spec = {
.uuid = UUID_EL3_RUNTIME_FIRMWARE_BL31,
};
static const io_uuid_spec_t bl33_uuid_spec = {
.uuid = UUID_NON_TRUSTED_FIRMWARE_BL33,
};
struct plat_io_policy {
uintptr_t *dev_handle;
uintptr_t image_spec;
int (*check)(const uintptr_t spec);
};
static const struct plat_io_policy policies[] = {
[FIP_IMAGE_ID] = {
&mmap_dev_handle,
(uintptr_t)&loader_fip_spec,
open_mmap
},
[BL2_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&bl2_uuid_spec,
open_fip
},
[BL31_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&bl31_uuid_spec,
open_fip
},
[BL33_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&bl33_uuid_spec,
open_fip
},
};
static int open_mmap(const uintptr_t spec)
{
int result;
uintptr_t local_image_handle;
result = io_dev_init(mmap_dev_handle, (uintptr_t)NULL);
if (result == 0) {
result = io_open(mmap_dev_handle, spec, &local_image_handle);
if (result == 0) {
io_close(local_image_handle);
}
}
return result;
}
static int open_fip(const uintptr_t spec)
{
uintptr_t local_image_handle;
int result;
result = io_dev_init(fip_dev_handle, (uintptr_t) FIP_IMAGE_ID);
if (result == 0) {
result = io_open(fip_dev_handle, spec, &local_image_handle);
if (result == 0) {
io_close(local_image_handle);
} else {
VERBOSE("error opening fip\n");
}
} else {
VERBOSE("error initializing fip\n");
}
return result;
}
int plat_get_image_source(unsigned int image_id, uintptr_t *dev_handle,
uintptr_t *image_spec)
{
const struct plat_io_policy *policy;
int result;
assert(image_id < ARRAY_SIZE(policies));
policy = &policies[image_id];
result = policy->check(policy->image_spec);
assert(result == 0);
*image_spec = policy->image_spec;
*dev_handle = *(policy->dev_handle);
return result;
}
void plat_io_setup(void)
{
int result;
result = register_io_dev_memmap(&mmap_dev_con);
assert(result == 0);
result = register_io_dev_fip(&fip_dev_con);
assert(result == 0);
result = io_dev_open(fip_dev_con, (uintptr_t)&loader_fip_spec,
&fip_dev_handle);
assert(result == 0);
result = io_dev_open(mmap_dev_con, (uintptr_t)NULL, &mmap_dev_handle);
assert(result == 0);
(void) result;
}