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/*
* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*/
#include <common.h>
#include <mmc.h>
#include "boot_device.h"
#include <vboot_api.h>
static int boot_device_mmc_start(uint32_t disk_flags)
{
/* We expect to have at least one MMC device */
return 1;
}
static int boot_device_mmc_scan(block_dev_desc_t **desc, int max_devs,
uint32_t disk_flags)
{
int index, found;
for (index = found = 0; index < max_devs; index++) {
struct mmc *mmc;
uint32_t flags;
mmc = find_mmc_device(index);
if (!mmc)
break;
/* Skip device that don't match or cannot be initialized */
if (boot_device_matches(&mmc->block_dev, disk_flags, &flags) &&
mmc_init(mmc) == 0) {
/*
* find_mmc_device() returns a pointer from a global
* linked list. So &mmc->block_dev is not a dangling
* pointer after this function is returned.
*/
desc[found++] = &mmc->block_dev;
}
}
return found;
}
static struct boot_interface mmc_interface = {
.name = "mmc",
.type = IF_TYPE_MMC,
.start = boot_device_mmc_start,
.scan = boot_device_mmc_scan,
};
int boot_device_mmc_probe(void)
{
return boot_device_register_interface(&mmc_interface);
}
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