u-boot/boot/system_bootdev.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* Bootdevice for system, used for bootmeths not tied to any partition device
*
* Copyright 2021 Google LLC
* Written by Simon Glass <sjg@chromium.org>
*/
#define LOG_CATEGORY UCLASS_BOOTSTD
#include <common.h>
#include <bootdev.h>
#include <bootflow.h>
#include <bootmeth.h>
#include <command.h>
#include <distro.h>
#include <dm.h>
#include <log.h>
#include <net.h>
static int system_get_bootflow(struct udevice *dev, struct bootflow_iter *iter,
struct bootflow *bflow)
{
int ret;
/* Must be an bootstd device */
ret = bootflow_iter_uses_system(iter);
if (ret)
return log_msg_ret("net", ret);
ret = bootmeth_check(bflow->method, iter);
if (ret)
return log_msg_ret("check", ret);
ret = bootmeth_read_bootflow(bflow->method, bflow);
if (ret)
return log_msg_ret("method", ret);
return 0;
}
static int system_bootdev_bind(struct udevice *dev)
{
struct bootdev_uc_plat *ucp = dev_get_uclass_plat(dev);
ucp->prio = BOOTDEVP_6_SYSTEM;
return 0;
}
struct bootdev_ops system_bootdev_ops = {
.get_bootflow = system_get_bootflow,
};
static const struct udevice_id system_bootdev_ids[] = {
{ .compatible = "u-boot,bootdev-system" },
{ }
};
U_BOOT_DRIVER(system_bootdev) = {
.name = "system_bootdev",
.id = UCLASS_BOOTDEV,
.ops = &system_bootdev_ops,
.bind = system_bootdev_bind,
.of_match = system_bootdev_ids,
};