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 <common.h>
10 #include <bootdev.h>
11 #include <bootflow.h>
12 #include <bootstd.h>
13 #include <command.h>
14 #include <dm.h>
15 #include <dm/device-internal.h>
16 #include <dm/uclass-internal.h>
17
bootdev_check_state(struct bootstd_priv ** stdp)18 static int bootdev_check_state(struct bootstd_priv **stdp)
19 {
20 struct bootstd_priv *std;
21 int ret;
22
23 ret = bootstd_get_priv(&std);
24 if (ret)
25 return ret;
26 if (!std->cur_bootdev) {
27 printf("Please use 'bootdev select' first\n");
28 return -ENOENT;
29 }
30 *stdp = std;
31
32 return 0;
33 }
34
do_bootdev_list(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])35 static int do_bootdev_list(struct cmd_tbl *cmdtp, int flag, int argc,
36 char *const argv[])
37 {
38 bool probe;
39
40 probe = argc >= 2 && !strcmp(argv[1], "-p");
41 bootdev_list(probe);
42
43 return 0;
44 }
45
do_bootdev_select(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])46 static int do_bootdev_select(struct cmd_tbl *cmdtp, int flag, int argc,
47 char *const argv[])
48 {
49 struct bootstd_priv *std;
50 struct udevice *dev;
51 int ret;
52
53 ret = bootstd_get_priv(&std);
54 if (ret)
55 return CMD_RET_FAILURE;
56 if (argc < 2) {
57 std->cur_bootdev = NULL;
58 return 0;
59 }
60 if (bootdev_find_by_any(argv[1], &dev, NULL))
61 return CMD_RET_FAILURE;
62
63 std->cur_bootdev = dev;
64
65 return 0;
66 }
67
do_bootdev_info(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])68 static int do_bootdev_info(struct cmd_tbl *cmdtp, int flag, int argc,
69 char *const argv[])
70 {
71 struct bootstd_priv *priv;
72 struct bootflow *bflow;
73 int ret, i, num_valid;
74 struct udevice *dev;
75 bool probe;
76
77 probe = argc >= 2 && !strcmp(argv[1], "-p");
78
79 ret = bootdev_check_state(&priv);
80 if (ret)
81 return CMD_RET_FAILURE;
82
83 dev = priv->cur_bootdev;
84
85 /* Count the number of bootflows, including how many are valid*/
86 num_valid = 0;
87 for (ret = bootdev_first_bootflow(dev, &bflow), i = 0;
88 !ret;
89 ret = bootdev_next_bootflow(&bflow), i++)
90 num_valid += bflow->state == BOOTFLOWST_READY;
91
92 /*
93 * Prove the device, if requested, otherwise assume that there is no
94 * error
95 */
96 ret = 0;
97 if (probe)
98 ret = device_probe(dev);
99
100 printf("Name: %s\n", dev->name);
101 printf("Sequence: %d\n", dev_seq(dev));
102 printf("Status: %s\n", ret ? simple_itoa(ret) : device_active(dev) ?
103 "Probed" : "OK");
104 printf("Uclass: %s\n", dev_get_uclass_name(dev_get_parent(dev)));
105 printf("Bootflows: %d (%d valid)\n", i, num_valid);
106
107 return 0;
108 }
109
do_bootdev_hunt(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])110 static int do_bootdev_hunt(struct cmd_tbl *cmdtp, int flag, int argc,
111 char *const argv[])
112 {
113 struct bootstd_priv *priv;
114 const char *spec = NULL;
115 bool list = false;
116 int ret = 0;
117
118 if (argc >= 2) {
119 if (!strcmp(argv[1], "-l"))
120 list = true;
121 else
122 spec = argv[1];
123 }
124
125 ret = bootstd_get_priv(&priv);
126 if (ret)
127 return ret;
128 if (list) {
129 bootdev_list_hunters(priv);
130 } else {
131 ret = bootdev_hunt(spec, true);
132 if (ret) {
133 printf("Failed (err=%dE)\n", ret);
134
135 return CMD_RET_FAILURE;
136 }
137 }
138
139 return 0;
140 }
141
142 #ifdef CONFIG_SYS_LONGHELP
143 static char bootdev_help_text[] =
144 "list [-p] - list all available bootdevs (-p to probe)\n"
145 "bootdev hunt [-l|<spec>] - use hunt drivers to find bootdevs\n"
146 "bootdev select <bd> - select a bootdev by name | label | seq\n"
147 "bootdev info [-p] - show information about a bootdev (-p to probe)";
148 #endif
149
150 U_BOOT_CMD_WITH_SUBCMDS(bootdev, "Boot devices", bootdev_help_text,
151 U_BOOT_SUBCMD_MKENT(list, 2, 1, do_bootdev_list),
152 U_BOOT_SUBCMD_MKENT(hunt, 2, 1, do_bootdev_hunt),
153 U_BOOT_SUBCMD_MKENT(select, 2, 1, do_bootdev_select),
154 U_BOOT_SUBCMD_MKENT(info, 2, 1, do_bootdev_info));
155