]> Git Repo - u-boot.git/blob - boot/bootmeth_qfw.c
Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"
[u-boot.git] / boot / bootmeth_qfw.c
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
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
78         plat->desc = "QEMU boot using firmware interface";
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[] = {
91         { .compatible = "u-boot,qfw-extlinux" },
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 };
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