1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * 'bootmeth' command
4 *
5 * Copyright 2021 Google LLC
6 * Written by Simon Glass <sjg@chromium.org>
7 */
8
9 #include <bootdev.h>
10 #include <bootmeth.h>
11 #include <bootstd.h>
12 #include <command.h>
13 #include <dm.h>
14 #include <env.h>
15 #include <malloc.h>
16 #include <dm/uclass-internal.h>
17
do_bootmeth_list(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])18 static int do_bootmeth_list(struct cmd_tbl *cmdtp, int flag, int argc,
19 char *const argv[])
20 {
21 struct bootstd_priv *std;
22 struct udevice *dev;
23 bool use_order;
24 bool all = false;
25 int ret;
26 int i;
27
28 if (argc > 1 && *argv[1] == '-') {
29 all = strchr(argv[1], 'a');
30 argc--;
31 argv++;
32 }
33
34 ret = bootstd_get_priv(&std);
35 if (ret) {
36 printf("Cannot get bootstd (err=%d)\n", ret);
37 return CMD_RET_FAILURE;
38 }
39
40 printf("Order Seq Name Description\n");
41 printf("----- --- ------------------ ------------------\n");
42
43 /*
44 * Use the ordering if we have one, so long as we are not trying to list
45 * all bootmethds
46 */
47 use_order = std->bootmeth_count && !all;
48 if (use_order)
49 dev = std->bootmeth_order[0];
50 else
51 ret = uclass_find_first_device(UCLASS_BOOTMETH, &dev);
52
53 for (i = 0; dev;) {
54 struct bootmeth_uc_plat *ucp = dev_get_uclass_plat(dev);
55 int order = i;
56
57 /*
58 * With the -a flag we may list bootdevs that are not in the
59 * ordering. Find their place in the order
60 */
61 if (all && std->bootmeth_count) {
62 int j;
63
64 /* Find the position of this bootmeth in the order */
65 order = -1;
66 for (j = 0; j < std->bootmeth_count; j++) {
67 if (std->bootmeth_order[j] == dev)
68 order = j;
69 }
70 }
71
72 if (ucp->flags & BOOTMETHF_GLOBAL)
73 printf("%5s", "glob");
74 else if (order == -1)
75 printf("%5s", "-");
76 else
77 printf("%5x", order);
78 printf(" %3x %-19.19s %s\n", dev_seq(dev), dev->name,
79 ucp->desc);
80 i++;
81 if (use_order)
82 dev = std->bootmeth_order[i];
83 else
84 uclass_find_next_device(&dev);
85 }
86 printf("----- --- ------------------ ------------------\n");
87 printf("(%d bootmeth%s)\n", i, i != 1 ? "s" : "");
88
89 return 0;
90 }
91
do_bootmeth_order(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])92 static int do_bootmeth_order(struct cmd_tbl *cmdtp, int flag, int argc,
93 char *const argv[])
94 {
95 int ret;
96
97 ret = bootmeth_set_order(argv[1]);
98 if (ret) {
99 printf("Failed (err=%d)\n", ret);
100 return CMD_RET_FAILURE;
101 }
102 env_set("bootmeths", argv[1]);
103
104 return 0;
105 }
106
do_bootmeth_set(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])107 static int do_bootmeth_set(struct cmd_tbl *cmdtp, int flag, int argc,
108 char *const argv[])
109 {
110 int ret;
111
112 if (argc < 4) {
113 printf("Required parameters not provided\n");
114 return CMD_RET_FAILURE;
115 }
116
117 ret = bootmeth_set_property(argv[1], argv[2], argv[3]);
118 if (ret) {
119 printf("Failed (err=%d)\n", ret);
120 return CMD_RET_FAILURE;
121 }
122
123 return 0;
124 }
125
126 U_BOOT_LONGHELP(bootmeth,
127 "list [-a] - list available bootmeths (-a all)\n"
128 "bootmeth order [<bd> ...] - select bootmeth order / subset to use\n"
129 "bootmeth set <bootmeth> <property> <value> - set optional property");
130
131 U_BOOT_CMD_WITH_SUBCMDS(bootmeth, "Boot methods", bootmeth_help_text,
132 U_BOOT_SUBCMD_MKENT(list, 2, 1, do_bootmeth_list),
133 U_BOOT_SUBCMD_MKENT(order, CONFIG_SYS_MAXARGS, 1, do_bootmeth_order),
134 U_BOOT_SUBCMD_MKENT(set, CONFIG_SYS_MAXARGS, 1, do_bootmeth_set));
135