2014-02-10 17:04:32 +00:00
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/*
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2015-03-19 19:17:53 +00:00
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* Copyright (c) 2014-2015, ARM Limited and Contributors. All rights reserved.
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2014-02-10 17:04:32 +00:00
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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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2014-04-09 13:14:54 +01:00
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#include <debug.h>
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2014-04-09 13:13:04 +01:00
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#include <io_driver.h>
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2014-04-09 13:14:54 +01:00
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#include <io_storage.h>
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#include <io_semihosting.h>
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2015-03-19 19:17:53 +00:00
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#include <plat_arm.h>
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2014-02-10 17:04:32 +00:00
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/* IO devices */
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2014-04-23 13:47:06 +01:00
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static const io_dev_connector_t *sh_dev_con;
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static uintptr_t sh_dev_handle;
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2014-02-14 14:42:48 +00:00
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2014-04-23 13:47:06 +01:00
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static int open_semihosting(const uintptr_t spec)
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2014-02-14 14:42:48 +00:00
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{
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int result = IO_FAIL;
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2014-04-23 13:47:06 +01:00
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uintptr_t local_image_handle;
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2014-02-14 14:42:48 +00:00
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/* See if the file exists on semi-hosting.*/
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2015-03-19 19:17:53 +00:00
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result = io_dev_init(sh_dev_handle, (uintptr_t)NULL);
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2014-02-14 14:42:48 +00:00
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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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2014-07-29 17:14:00 +01:00
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VERBOSE("Using Semi-hosting IO\n");
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2014-02-14 14:42:48 +00:00
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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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2015-03-19 19:17:53 +00:00
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void plat_arm_io_setup(void)
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2014-02-14 14:42:48 +00:00
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{
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2015-03-19 19:17:53 +00:00
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int io_result;
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2014-02-14 14:42:48 +00:00
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2015-03-19 19:17:53 +00:00
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arm_io_setup();
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2014-02-14 14:42:48 +00:00
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2015-03-19 19:17:53 +00:00
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/* Register the additional IO devices on this platform */
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io_result = register_io_dev_sh(&sh_dev_con);
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2014-02-10 17:04:32 +00:00
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assert(io_result == IO_SUCCESS);
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2014-02-14 14:42:48 +00:00
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/* Open connections to devices and cache the handles */
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2015-03-19 19:17:53 +00:00
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io_result = io_dev_open(sh_dev_con, (uintptr_t)NULL, &sh_dev_handle);
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2014-02-14 14:42:48 +00:00
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assert(io_result == IO_SUCCESS);
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2014-02-10 17:04:32 +00:00
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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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2015-03-19 19:17:53 +00:00
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int plat_arm_get_alt_image_source(
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const uintptr_t image_spec,
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uintptr_t *dev_handle)
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2014-02-10 17:04:32 +00:00
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{
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2015-03-19 19:17:53 +00:00
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int result = open_semihosting(image_spec);
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if (result == IO_SUCCESS)
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*dev_handle = sh_dev_handle;
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2014-02-18 17:40:24 +00:00
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2014-02-10 17:04:32 +00:00
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return result;
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}
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