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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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