[J-u-boot.git] / boot / bootmeth_qfw.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Bootmethod for QEMU qfw
 *
 * Copyright 2023 Google LLC
 * Written by Simon Glass <[email protected]>
 */

#define LOG_CATEGORY UCLASS_BOOTSTD

#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-bootmeth" },
	{ }
};

U_BOOT_DRIVER(bootmeth_qfw) = {
	.name		= "bootmeth_qfw",
	.id		= UCLASS_BOOTMETH,
	.of_match	= qfw_bootmeth_ids,
	.ops		= &qfw_bootmeth_ops,
	.bind		= qfw_bootmeth_bind,
};
Commit	Line	Data
9c6d57dc SG	1	// SPDX-License-Identifier: GPL-2.0+
	2	/*
	3	* Bootmethod for QEMU qfw
	4	*
	5	* Copyright 2023 Google LLC
	6	* Written by Simon Glass <[email protected]>
	7	*/
	8
	9	#define LOG_CATEGORY UCLASS_BOOTSTD
	10
9c6d57dc SG	11	#include <command.h>
	12	#include <bootdev.h>
	13	#include <bootflow.h>
	14	#include <bootmeth.h>
	15	#include <env.h>
	16	#include <qfw.h>
	17	#include <dm.h>
	18
	19	static int qfw_check(struct udevice dev, struct bootflow_iter iter)
	20	{
	21	const struct udevice *media = dev_get_parent(iter->dev);
	22	enum uclass_id id = device_get_uclass_id(media);
	23
	24	log_debug("media=%s\n", media->name);
	25	if (id == UCLASS_QFW)
	26	return 0;
	27
	28	return -ENOTSUPP;
	29	}
	30
	31	static int qfw_read_bootflow(struct udevice dev, struct bootflow bflow)
	32	{
	33	struct udevice *qfw_dev = dev_get_parent(bflow->dev);
	34	ulong load, initrd;
	35	int ret;
	36
	37	load = env_get_hex("kernel_addr_r", 0);
	38	initrd = env_get_hex("ramdisk_addr_r", 0);
	39	log_debug("setup kernel %s %lx %lx\n", qfw_dev->name, load, initrd);
	40	bflow->name = strdup("qfw");
	41	if (!bflow->name)
	42	return log_msg_ret("name", -ENOMEM);
	43
	44	ret = qemu_fwcfg_setup_kernel(qfw_dev, load, initrd);
	45	log_debug("setup kernel result %d\n", ret);
	46	if (ret)
	47	return log_msg_ret("cmd", -EIO);
	48
	49	bflow->state = BOOTFLOWST_READY;
	50
	51	return 0;
	52	}
	53
	54	static int qfw_read_file(struct udevice dev, struct bootflow bflow,
	55	const char file_path, ulong addr, ulong sizep)
	56	{
	57	return -ENOSYS;
	58	}
	59
	60	static int qfw_boot(struct udevice dev, struct bootflow bflow)
	61	{
	62	int ret;
	63
	64	ret = run_command("booti ${kernel_addr_r} ${ramdisk_addr_r}:${filesize} ${fdtcontroladdr}",
	65	0);
	66	if (ret) {
	67	ret = run_command("bootz ${kernel_addr_r} ${ramdisk_addr_r}:${filesize} "
	68	"${fdtcontroladdr}", 0);
	69	}
	70
	71	return ret ? -EIO : 0;
	72	}
	73
	74	static int qfw_bootmeth_bind(struct udevice *dev)
75	{
76	struct bootmeth_uc_plat *plat = dev_get_uclass_plat(dev);
77
3c2e531c	78	plat->desc = "QEMU boot using firmware interface";
9c6d57dc SG	79
	80	return 0;
	81	}
	82
	83	static struct bootmeth_ops qfw_bootmeth_ops = {
	84	.check = qfw_check,
	85	.read_bootflow = qfw_read_bootflow,
	86	.read_file = qfw_read_file,
	87	.boot = qfw_boot,
	88	};
	89
	90	static const struct udevice_id qfw_bootmeth_ids[] = {
70a4982d	91	{ .compatible = "u-boot,qfw-bootmeth" },
9c6d57dc SG	92	{ }
	93	};
	94
	95	U_BOOT_DRIVER(bootmeth_qfw) = {
	96	.name = "bootmeth_qfw",
	97	.id = UCLASS_BOOTMETH,
	98	.of_match = qfw_bootmeth_ids,
	99	.ops = &qfw_bootmeth_ops,
	100	.bind = qfw_bootmeth_bind,
	101	};