sandbox: Restore blocking I/O on exit
[platform/kernel/u-boot.git] / cmd / dtimg.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * (C) Copyright 2018 Linaro Ltd.
4  * Sam Protsenko <semen.protsenko@linaro.org>
5  */
6
7 #include <image-android-dt.h>
8 #include <common.h>
9
10 enum cmd_dtimg_info {
11         CMD_DTIMG_START = 0,
12         CMD_DTIMG_SIZE,
13 };
14
15 static int do_dtimg_dump(cmd_tbl_t *cmdtp, int flag, int argc,
16                          char * const argv[])
17 {
18         char *endp;
19         ulong hdr_addr;
20
21         if (argc != 2)
22                 return CMD_RET_USAGE;
23
24         hdr_addr = simple_strtoul(argv[1], &endp, 16);
25         if (*endp != '\0') {
26                 printf("Error: Wrong image address\n");
27                 return CMD_RET_FAILURE;
28         }
29
30         if (!android_dt_check_header(hdr_addr)) {
31                 printf("Error: DT image header is incorrect\n");
32                 return CMD_RET_FAILURE;
33         }
34
35         android_dt_print_contents(hdr_addr);
36
37         return CMD_RET_SUCCESS;
38 }
39
40 static int dtimg_get_fdt(int argc, char * const argv[], enum cmd_dtimg_info cmd)
41 {
42         ulong hdr_addr;
43         u32 index;
44         char *endp;
45         ulong fdt_addr;
46         u32 fdt_size;
47         char buf[65];
48
49         if (argc != 4)
50                 return CMD_RET_USAGE;
51
52         hdr_addr = simple_strtoul(argv[1], &endp, 16);
53         if (*endp != '\0') {
54                 printf("Error: Wrong image address\n");
55                 return CMD_RET_FAILURE;
56         }
57
58         if (!android_dt_check_header(hdr_addr)) {
59                 printf("Error: DT image header is incorrect\n");
60                 return CMD_RET_FAILURE;
61         }
62
63         index = simple_strtoul(argv[2], &endp, 0);
64         if (*endp != '\0') {
65                 printf("Error: Wrong index\n");
66                 return CMD_RET_FAILURE;
67         }
68
69         if (!android_dt_get_fdt_by_index(hdr_addr, index, &fdt_addr, &fdt_size))
70                 return CMD_RET_FAILURE;
71
72         switch (cmd) {
73         case CMD_DTIMG_START:
74                 snprintf(buf, sizeof(buf), "%lx", fdt_addr);
75                 break;
76         case CMD_DTIMG_SIZE:
77                 snprintf(buf, sizeof(buf), "%x", fdt_size);
78                 break;
79         default:
80                 printf("Error: Unknown cmd_dtimg_info value: %d\n", cmd);
81                 return CMD_RET_FAILURE;
82         }
83
84         env_set(argv[3], buf);
85
86         return CMD_RET_SUCCESS;
87 }
88
89 static int do_dtimg_start(cmd_tbl_t *cmdtp, int flag, int argc,
90                           char * const argv[])
91 {
92         return dtimg_get_fdt(argc, argv, CMD_DTIMG_START);
93 }
94
95 static int do_dtimg_size(cmd_tbl_t *cmdtp, int flag, int argc,
96                          char * const argv[])
97 {
98         return dtimg_get_fdt(argc, argv, CMD_DTIMG_SIZE);
99 }
100
101 static cmd_tbl_t cmd_dtimg_sub[] = {
102         U_BOOT_CMD_MKENT(dump, 2, 0, do_dtimg_dump, "", ""),
103         U_BOOT_CMD_MKENT(start, 4, 0, do_dtimg_start, "", ""),
104         U_BOOT_CMD_MKENT(size, 4, 0, do_dtimg_size, "", ""),
105 };
106
107 static int do_dtimg(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
108 {
109         cmd_tbl_t *cp;
110
111         cp = find_cmd_tbl(argv[1], cmd_dtimg_sub, ARRAY_SIZE(cmd_dtimg_sub));
112
113         /* Strip off leading 'dtimg' command argument */
114         argc--;
115         argv++;
116
117         if (!cp || argc > cp->maxargs)
118                 return CMD_RET_USAGE;
119         if (flag == CMD_FLAG_REPEAT && !cp->repeatable)
120                 return CMD_RET_SUCCESS;
121
122         return cp->cmd(cmdtp, flag, argc, argv);
123 }
124
125 U_BOOT_CMD(
126         dtimg, CONFIG_SYS_MAXARGS, 0, do_dtimg,
127         "manipulate dtb/dtbo Android image",
128         "dump <addr>\n"
129         "    - parse specified image and print its structure info\n"
130         "      <addr>: image address in RAM, in hex\n"
131         "dtimg start <addr> <index> <varname>\n"
132         "    - get address (hex) of FDT in the image, by index\n"
133         "      <addr>: image address in RAM, in hex\n"
134         "      <index>: index of desired FDT in the image\n"
135         "      <varname>: name of variable where to store address of FDT\n"
136         "dtimg size <addr> <index> <varname>\n"
137         "    - get size (hex, bytes) of FDT in the image, by index\n"
138         "      <addr>: image address in RAM, in hex\n"
139         "      <index>: index of desired FDT in the image\n"
140         "      <varname>: name of variable where to store size of FDT"
141 );