104 lines
3.4 KiB
C
104 lines
3.4 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 <string.h>
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#include "platform.h"
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#include "io_storage.h"
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#include "io_driver.h"
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#include "io_semihosting.h"
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#include "semihosting.h" /* For FOPEN_MODE_... */
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#include "debug.h"
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/* IO devices */
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static struct io_plat_data io_data;
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static struct io_dev_connector *sh_dev_con;
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static void *const sh_dev_spec;
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static void *const sh_init_params;
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static io_dev_handle sh_dev_handle;
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static io_file_spec bl2_image_spec = {
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.path = BL2_IMAGE_NAME,
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.mode = FOPEN_MODE_R
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};
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static io_file_spec bl31_image_spec = {
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.path = BL31_IMAGE_NAME,
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.mode = FOPEN_MODE_R
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};
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/* Set up the IO devices present on this platform, ready for use */
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void io_setup(void)
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{
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/* Initialise the IO layer */
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io_init(&io_data);
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/* Register a semi-hosting device */
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int io_result = register_io_dev_sh(&sh_dev_con);
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assert(io_result == IO_SUCCESS);
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/* Open a connection to the semi-hosting device and cache the handle */
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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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/* 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 */
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int plat_get_image_source(const char *image_name, io_dev_handle *dev_handle,
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void **image_spec)
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{
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int result = IO_FAIL;
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assert((image_name != NULL) && (dev_handle != NULL) &&
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(image_spec != NULL));
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if (strcmp(BL2_IMAGE_NAME, image_name) == 0) {
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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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*dev_handle = sh_dev_handle;
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*(io_file_spec **)image_spec = &bl2_image_spec;
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}
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} else if (strcmp(BL31_IMAGE_NAME, image_name) == 0) {
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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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*dev_handle = sh_dev_handle;
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*(io_file_spec **)image_spec = &bl31_image_spec;
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}
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} else
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assert(0);
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return result;
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}
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