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1 | /* |
2 | * fdtdump.c - Contributed by Pantelis Antoniou <pantelis.antoniou AT gmail.com> |
3 | */ |
4 | |
5 | #include <stdint.h> |
6 | #include <stdio.h> |
7 | #include <stdlib.h> |
8 | #include <string.h> |
9 | #include <ctype.h> |
10 | |
11 | #include <fdt.h> |
12 | #include <libfdt_env.h> |
13 | |
14 | #include "util.h" |
15 | |
16 | #define ALIGN(x, a) (((x) + ((a) - 1)) & ~((a) - 1)) |
17 | #define PALIGN(p, a) ((void *)(ALIGN((unsigned long)(p), (a)))) |
18 | #define GET_CELL(p) (p += 4, *((const uint32_t *)(p-4))) |
19 | |
20 | static void print_data(const char *data, int len) |
21 | { |
22 | int i; |
23 | const char *p = data; |
24 | |
25 | /* no data, don't print */ |
26 | if (len == 0) |
27 | return; |
28 | |
29 | if (util_is_printable_string(data, len)) { |
30 | printf(" = \"%s\"", (const char *)data); |
31 | } else if ((len % 4) == 0) { |
32 | printf(" = <"); |
33 | for (i = 0; i < len; i += 4) |
34 | printf("0x%08x%s", fdt32_to_cpu(GET_CELL(p)), |
35 | i < (len - 4) ? " " : ""); |
36 | printf(">"); |
37 | } else { |
38 | printf(" = ["); |
39 | for (i = 0; i < len; i++) |
40 | printf("%02x%s", *p++, i < len - 1 ? " " : ""); |
41 | printf("]"); |
42 | } |
43 | } |
44 | |
45 | static void dump_blob(void *blob) |
46 | { |
47 | struct fdt_header *bph = blob; |
48 | uint32_t off_mem_rsvmap = fdt32_to_cpu(bph->off_mem_rsvmap); |
49 | uint32_t off_dt = fdt32_to_cpu(bph->off_dt_struct); |
50 | uint32_t off_str = fdt32_to_cpu(bph->off_dt_strings); |
51 | struct fdt_reserve_entry *p_rsvmap = |
52 | (struct fdt_reserve_entry *)((char *)blob + off_mem_rsvmap); |
53 | const char *p_struct = (const char *)blob + off_dt; |
54 | const char *p_strings = (const char *)blob + off_str; |
55 | uint32_t version = fdt32_to_cpu(bph->version); |
56 | uint32_t totalsize = fdt32_to_cpu(bph->totalsize); |
57 | uint32_t tag; |
58 | const char *p, *s, *t; |
59 | int depth, sz, shift; |
60 | int i; |
61 | uint64_t addr, size; |
62 | |
63 | depth = 0; |
64 | shift = 4; |
65 | |
66 | printf("/dts-v1/;\n"); |
67 | printf("// magic:\t\t0x%x\n", fdt32_to_cpu(bph->magic)); |
68 | printf("// totalsize:\t\t0x%x (%d)\n", totalsize, totalsize); |
69 | printf("// off_dt_struct:\t0x%x\n", off_dt); |
70 | printf("// off_dt_strings:\t0x%x\n", off_str); |
71 | printf("// off_mem_rsvmap:\t0x%x\n", off_mem_rsvmap); |
72 | printf("// version:\t\t%d\n", version); |
73 | printf("// last_comp_version:\t%d\n", |
74 | fdt32_to_cpu(bph->last_comp_version)); |
75 | if (version >= 2) |
76 | printf("// boot_cpuid_phys:\t0x%x\n", |
77 | fdt32_to_cpu(bph->boot_cpuid_phys)); |
78 | |
79 | if (version >= 3) |
80 | printf("// size_dt_strings:\t0x%x\n", |
81 | fdt32_to_cpu(bph->size_dt_strings)); |
82 | if (version >= 17) |
83 | printf("// size_dt_struct:\t0x%x\n", |
84 | fdt32_to_cpu(bph->size_dt_struct)); |
85 | printf("\n"); |
86 | |
87 | for (i = 0; ; i++) { |
88 | addr = fdt64_to_cpu(p_rsvmap[i].address); |
89 | size = fdt64_to_cpu(p_rsvmap[i].size); |
90 | if (addr == 0 && size == 0) |
91 | break; |
92 | |
93 | printf("/memreserve/ %llx %llx;\n", |
94 | (unsigned long long)addr, (unsigned long long)size); |
95 | } |
96 | |
97 | p = p_struct; |
98 | while ((tag = fdt32_to_cpu(GET_CELL(p))) != FDT_END) { |
99 | |
100 | /* printf("tag: 0x%08x (%d)\n", tag, p - p_struct); */ |
101 | |
102 | if (tag == FDT_BEGIN_NODE) { |
103 | s = p; |
104 | p = PALIGN(p + strlen(s) + 1, 4); |
105 | |
106 | if (*s == '\0') |
107 | s = "/"; |
108 | |
109 | printf("%*s%s {\n", depth * shift, "", s); |
110 | |
111 | depth++; |
112 | continue; |
113 | } |
114 | |
115 | if (tag == FDT_END_NODE) { |
116 | depth--; |
117 | |
118 | printf("%*s};\n", depth * shift, ""); |
119 | continue; |
120 | } |
121 | |
122 | if (tag == FDT_NOP) { |
123 | printf("%*s// [NOP]\n", depth * shift, ""); |
124 | continue; |
125 | } |
126 | |
127 | if (tag != FDT_PROP) { |
128 | fprintf(stderr, "%*s ** Unknown tag 0x%08x\n", depth * shift, "", tag); |
129 | break; |
130 | } |
131 | sz = fdt32_to_cpu(GET_CELL(p)); |
132 | s = p_strings + fdt32_to_cpu(GET_CELL(p)); |
133 | if (version < 16 && sz >= 8) |
134 | p = PALIGN(p, 8); |
135 | t = p; |
136 | |
137 | p = PALIGN(p + sz, 4); |
138 | |
139 | printf("%*s%s", depth * shift, "", s); |
140 | print_data(t, sz); |
141 | printf(";\n"); |
142 | } |
143 | } |
144 | |
145 | |
146 | int main(int argc, char *argv[]) |
147 | { |
148 | char *buf; |
149 | |
150 | if (argc < 2) { |
151 | fprintf(stderr, "supply input filename\n"); |
152 | return 5; |
153 | } |
154 | |
155 | buf = utilfdt_read(argv[1]); |
156 | if (buf) |
157 | dump_blob(buf); |
158 | else |
159 | return 10; |
160 | |
161 | return 0; |
162 | } |
163 |
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od-2011-09-04
od-2011-09-18
v2.6.34-rc5
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