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/*
* Copyright (c) 2014-2015, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <assert.h>
#include <common_def.h>
#include <debug.h>
#include <io_driver.h>
#include <io_storage.h>
#include <io_semihosting.h>
#include <plat_arm.h>
#include <semihosting.h> /* For FOPEN_MODE_... */
/* Semihosting filenames */
#define BL2_IMAGE_NAME "bl2.bin"
#define BL31_IMAGE_NAME "bl31.bin"
#define BL32_IMAGE_NAME "bl32.bin"
#define BL33_IMAGE_NAME "bl33.bin"
#if TRUSTED_BOARD_BOOT
#define BL2_CERT_NAME "bl2.crt"
#define TRUSTED_KEY_CERT_NAME "trusted_key.crt"
#define BL31_KEY_CERT_NAME "bl31_key.crt"
#define BL32_KEY_CERT_NAME "bl32_key.crt"
#define BL33_KEY_CERT_NAME "bl33_key.crt"
#define BL31_CERT_NAME "bl31.crt"
#define BL32_CERT_NAME "bl32.crt"
#define BL33_CERT_NAME "bl33.crt"
#endif /* TRUSTED_BOARD_BOOT */
/* IO devices */
static const io_dev_connector_t *sh_dev_con;
static uintptr_t sh_dev_handle;
static const io_file_spec_t sh_file_spec[] = {
[BL2_IMAGE_ID] = {
.path = BL2_IMAGE_NAME,
.mode = FOPEN_MODE_RB
},
[BL31_IMAGE_ID] = {
.path = BL31_IMAGE_NAME,
.mode = FOPEN_MODE_RB
},
[BL32_IMAGE_ID] = {
.path = BL32_IMAGE_NAME,
.mode = FOPEN_MODE_RB
},
[BL33_IMAGE_ID] = {
.path = BL33_IMAGE_NAME,
.mode = FOPEN_MODE_RB
},
#if TRUSTED_BOARD_BOOT
[BL2_CERT_ID] = {
.path = BL2_CERT_NAME,
.mode = FOPEN_MODE_RB
},
[TRUSTED_KEY_CERT_ID] = {
.path = TRUSTED_KEY_CERT_NAME,
.mode = FOPEN_MODE_RB
},
[BL31_KEY_CERT_ID] = {
.path = BL31_KEY_CERT_NAME,
.mode = FOPEN_MODE_RB
},
[BL32_KEY_CERT_ID] = {
.path = BL32_KEY_CERT_NAME,
.mode = FOPEN_MODE_RB
},
[BL33_KEY_CERT_ID] = {
.path = BL33_KEY_CERT_NAME,
.mode = FOPEN_MODE_RB
},
[BL31_CERT_ID] = {
.path = BL31_CERT_NAME,
.mode = FOPEN_MODE_RB
},
[BL32_CERT_ID] = {
.path = BL32_CERT_NAME,
.mode = FOPEN_MODE_RB
},
[BL33_CERT_ID] = {
.path = BL33_CERT_NAME,
.mode = FOPEN_MODE_RB
},
#endif /* TRUSTED_BOARD_BOOT */
};
static int open_semihosting(const uintptr_t spec)
{
int result = IO_FAIL;
uintptr_t local_image_handle;
/* See if the file exists on semi-hosting.*/
result = io_dev_init(sh_dev_handle, (uintptr_t)NULL);
if (result == IO_SUCCESS) {
result = io_open(sh_dev_handle, spec, &local_image_handle);
if (result == IO_SUCCESS) {
VERBOSE("Using Semi-hosting IO\n");
io_close(local_image_handle);
}
}
return result;
}
void plat_arm_io_setup(void)
{
int io_result;
arm_io_setup();
/* Register the additional IO devices on this platform */
io_result = register_io_dev_sh(&sh_dev_con);
assert(io_result == IO_SUCCESS);
/* Open connections to devices and cache the handles */
io_result = io_dev_open(sh_dev_con, (uintptr_t)NULL, &sh_dev_handle);
assert(io_result == IO_SUCCESS);
/* Ignore improbable errors in release builds */
(void)io_result;
}
/*
* FVP provides semihosting as an alternative to load images
*/
int plat_arm_get_alt_image_source(unsigned int image_id, uintptr_t *dev_handle,
uintptr_t *image_spec)
{
int result = open_semihosting((const uintptr_t)&sh_file_spec[image_id]);
if (result == IO_SUCCESS) {
*dev_handle = sh_dev_handle;
*image_spec = (uintptr_t)&sh_file_spec[image_id];
}
return result;
}
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