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7#include <image-android-dt.h>
8#include <common.h>
9
10enum cmd_dtimg_info {
11 CMD_DTIMG_START = 0,
12 CMD_DTIMG_SIZE,
13};
14
15static 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
40static 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
89static 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
95static 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
101static 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
107static 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
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
125U_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);
142
