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// SPDX-License-Identifier: GPL-2.0+
/*
* Bootmethod for QEMU qfw
*
* Copyright 2023 Google LLC
* Written by Simon Glass <sjg@chromium.org>
*/
#define LOG_CATEGORY UCLASS_BOOTSTD
#include <common.h>
#include <command.h>
#include <bootdev.h>
#include <bootflow.h>
#include <bootmeth.h>
#include <env.h>
#include <qfw.h>
#include <dm.h>
static int qfw_check(struct udevice *dev, struct bootflow_iter *iter)
{
const struct udevice *media = dev_get_parent(iter->dev);
enum uclass_id id = device_get_uclass_id(media);
log_debug("media=%s\n", media->name);
if (id == UCLASS_QFW)
return 0;
return -ENOTSUPP;
}
static int qfw_read_bootflow(struct udevice *dev, struct bootflow *bflow)
{
struct udevice *qfw_dev = dev_get_parent(bflow->dev);
ulong load, initrd;
int ret;
load = env_get_hex("kernel_addr_r", 0);
initrd = env_get_hex("ramdisk_addr_r", 0);
log_debug("setup kernel %s %lx %lx\n", qfw_dev->name, load, initrd);
bflow->name = strdup("qfw");
if (!bflow->name)
return log_msg_ret("name", -ENOMEM);
ret = qemu_fwcfg_setup_kernel(qfw_dev, load, initrd);
log_debug("setup kernel result %d\n", ret);
if (ret)
return log_msg_ret("cmd", -EIO);
bflow->state = BOOTFLOWST_READY;
return 0;
}
static int qfw_read_file(struct udevice *dev, struct bootflow *bflow,
const char *file_path, ulong addr, ulong *sizep)
{
return -ENOSYS;
}
static int qfw_boot(struct udevice *dev, struct bootflow *bflow)
{
int ret;
ret = run_command("booti ${kernel_addr_r} ${ramdisk_addr_r}:${filesize} ${fdtcontroladdr}",
0);
if (ret) {
ret = run_command("bootz ${kernel_addr_r} ${ramdisk_addr_r}:${filesize} "
"${fdtcontroladdr}", 0);
}
return ret ? -EIO : 0;
}
static int qfw_bootmeth_bind(struct udevice *dev)
{
struct bootmeth_uc_plat *plat = dev_get_uclass_plat(dev);
plat->desc = "QEMU boot using firmware interface";
return 0;
}
static struct bootmeth_ops qfw_bootmeth_ops = {
.check = qfw_check,
.read_bootflow = qfw_read_bootflow,
.read_file = qfw_read_file,
.boot = qfw_boot,
};
static const struct udevice_id qfw_bootmeth_ids[] = {
{ .compatible = "u-boot,qfw-extlinux" },
{ }
};
U_BOOT_DRIVER(bootmeth_qfw) = {
.name = "bootmeth_qfw",
.id = UCLASS_BOOTMETH,
.of_match = qfw_bootmeth_ids,
.ops = &qfw_bootmeth_ops,
.bind = qfw_bootmeth_bind,
};
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