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