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"Das U-Boot" Source Tree
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * 'bootdev' command
4 *
5 * Copyright 2021 Google LLC
6 * Written by Simon Glass <sjg@chromium.org>
7 */
8
9#include <bootdev.h>
10#include <bootflow.h>
11#include <bootstd.h>
12#include <command.h>
13#include <dm.h>
14#include <dm/device-internal.h>
15#include <dm/uclass-internal.h>
16
17static int bootdev_check_state(struct bootstd_priv **stdp)
18{
19 struct bootstd_priv *std;
20 int ret;
21
22 ret = bootstd_get_priv(&std);
23 if (ret)
24 return ret;
25 if (!std->cur_bootdev) {
26 printf("Please use 'bootdev select' first\n");
27 return -ENOENT;
28 }
29 *stdp = std;
30
31 return 0;
32}
33
34static int do_bootdev_list(struct cmd_tbl *cmdtp, int flag, int argc,
35 char *const argv[])
36{
37 bool probe;
38
39 probe = argc >= 2 && !strcmp(argv[1], "-p");
40 bootdev_list(probe);
41
42 return 0;
43}
44
45static int do_bootdev_select(struct cmd_tbl *cmdtp, int flag, int argc,
46 char *const argv[])
47{
48 struct bootstd_priv *std;
49 struct udevice *dev;
50 int ret;
51
52 ret = bootstd_get_priv(&std);
53 if (ret)
54 return CMD_RET_FAILURE;
55 if (argc < 2) {
56 std->cur_bootdev = NULL;
57 return 0;
58 }
59 if (bootdev_find_by_any(argv[1], &dev, NULL))
60 return CMD_RET_FAILURE;
61
62 std->cur_bootdev = dev;
63
64 return 0;
65}
66
67static int do_bootdev_info(struct cmd_tbl *cmdtp, int flag, int argc,
68 char *const argv[])
69{
70 struct bootstd_priv *priv;
71 struct bootflow *bflow;
72 int ret, i, num_valid;
73 struct udevice *dev;
74 bool probe;
75
76 probe = argc >= 2 && !strcmp(argv[1], "-p");
77
78 ret = bootdev_check_state(&priv);
79 if (ret)
80 return CMD_RET_FAILURE;
81
82 dev = priv->cur_bootdev;
83
84 /* Count the number of bootflows, including how many are valid */
85 num_valid = 0;
86 for (ret = bootdev_first_bootflow(dev, &bflow), i = 0;
87 !ret;
88 ret = bootdev_next_bootflow(&bflow), i++)
89 num_valid += bflow->state == BOOTFLOWST_READY;
90
91 /*
92 * Prove the device, if requested, otherwise assume that there is no
93 * error
94 */
95 ret = 0;
96 if (probe)
97 ret = device_probe(dev);
98
99 printf("Name: %s\n", dev->name);
100 printf("Sequence: %d\n", dev_seq(dev));
101 printf("Status: %s\n", ret ? simple_itoa(-ret) : device_active(dev) ?
102 "Probed" : "OK");
103 printf("Uclass: %s\n", dev_get_uclass_name(dev_get_parent(dev)));
104 printf("Bootflows: %d (%d valid)\n", i, num_valid);
105
106 return 0;
107}
108
109static int do_bootdev_hunt(struct cmd_tbl *cmdtp, int flag, int argc,
110 char *const argv[])
111{
112 struct bootstd_priv *priv;
113 const char *spec = NULL;
114 bool list = false;
115 int ret = 0;
116
117 if (argc >= 2) {
118 if (!strcmp(argv[1], "-l"))
119 list = true;
120 else
121 spec = argv[1];
122 }
123
124 ret = bootstd_get_priv(&priv);
125 if (ret)
126 return ret;
127 if (list) {
128 bootdev_list_hunters(priv);
129 } else {
130 ret = bootdev_hunt(spec, true);
131 if (ret) {
132 printf("Failed (err=%dE)\n", ret);
133
134 return CMD_RET_FAILURE;
135 }
136 }
137
138 return 0;
139}
140
141U_BOOT_LONGHELP(bootdev,
142 "list [-p] - list all available bootdevs (-p to probe)\n"
143 "bootdev hunt [-l|<spec>] - use hunt drivers to find bootdevs\n"
144 "bootdev select <bd> - select a bootdev by name | label | seq\n"
145 "bootdev info [-p] - show information about a bootdev (-p to probe)");
146
147U_BOOT_CMD_WITH_SUBCMDS(bootdev, "Boot devices", bootdev_help_text,
148 U_BOOT_SUBCMD_MKENT(list, 2, 1, do_bootdev_list),
149 U_BOOT_SUBCMD_MKENT(hunt, 2, 1, do_bootdev_hunt),
150 U_BOOT_SUBCMD_MKENT(select, 2, 1, do_bootdev_select),
151 U_BOOT_SUBCMD_MKENT(info, 2, 1, do_bootdev_info));