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1 /* |
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2 * libfdt - Flat Device Tree manipulation |
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3 * Testcase/tool for rearranging blocks of a dtb |
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4 * Copyright (C) 2006 David Gibson, IBM Corporation. |
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5 * |
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6 * This library is free software; you can redistribute it and/or |
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7 * modify it under the terms of the GNU Lesser General Public License |
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8 * as published by the Free Software Foundation; either version 2.1 of |
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9 * the License, or (at your option) any later version. |
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10 * |
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11 * This library is distributed in the hope that it will be useful, but |
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 * Lesser General Public License for more details. |
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15 * |
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16 * You should have received a copy of the GNU Lesser General Public |
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17 * License along with this library; if not, write to the Free Software |
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18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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19 */ |
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20 |
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21 #include <stdlib.h> |
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22 #include <stdio.h> |
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23 #include <string.h> |
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24 #include <limits.h> |
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25 #include <stdint.h> |
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26 |
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27 #include <fdt.h> |
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28 #include <libfdt.h> |
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29 |
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30 #include "tests.h" |
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31 #include "testdata.h" |
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32 |
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33 struct bufstate { |
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34 char *buf; |
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35 int size; |
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36 }; |
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37 |
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38 void expand_buf(struct bufstate *buf, int newsize) |
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39 { |
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40 buf->buf = realloc(buf->buf, newsize); |
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41 if (!buf->buf) |
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42 CONFIG("Allocation failure"); |
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43 buf->size = newsize; |
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44 } |
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45 |
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46 void new_header(struct bufstate *buf, int version, const void *fdt) |
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47 { |
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48 int hdrsize; |
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49 |
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50 if (version == 16) |
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51 hdrsize = FDT_V16_SIZE; |
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52 else if (version == 17) |
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53 hdrsize = FDT_V17_SIZE; |
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54 else |
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55 CONFIG("Bad version %d", version); |
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56 |
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57 expand_buf(buf, hdrsize); |
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58 memset(buf->buf, 0, hdrsize); |
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59 |
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60 fdt_set_magic(buf->buf, FDT_MAGIC); |
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61 fdt_set_version(buf->buf, version); |
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62 fdt_set_last_comp_version(buf->buf, 16); |
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63 fdt_set_boot_cpuid_phys(buf->buf, fdt_boot_cpuid_phys(fdt)); |
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64 } |
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65 |
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66 void add_block(struct bufstate *buf, int version, char block, const void *fdt) |
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67 { |
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68 int align, size; |
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69 const void *src; |
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70 int offset; |
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71 |
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72 switch (block) { |
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73 case 'm': |
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74 /* Memory reserve map */ |
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75 align = 8; |
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76 src = (const char *)fdt + fdt_off_mem_rsvmap(fdt); |
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77 size = (fdt_num_mem_rsv(fdt) + 1) |
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78 * sizeof(struct fdt_reserve_entry); |
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79 break; |
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80 |
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81 case 't': |
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82 /* Structure block */ |
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83 align = 4; |
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84 src = (const char *)fdt + fdt_off_dt_struct(fdt); |
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85 size = fdt_size_dt_struct(fdt); |
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86 break; |
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87 |
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88 case 's': |
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89 /* Strings block */ |
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90 align = 1; |
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91 src = (const char *)fdt + fdt_off_dt_strings(fdt); |
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92 size = fdt_size_dt_strings(fdt); |
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93 break; |
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94 default: |
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95 CONFIG("Bad block '%c'", block); |
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96 } |
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97 |
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98 offset = ALIGN(buf->size, align); |
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99 |
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100 expand_buf(buf, offset+size); |
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101 |
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102 memcpy(buf->buf + offset, src, size); |
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103 |
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104 switch (block) { |
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105 case 'm': |
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106 fdt_set_off_mem_rsvmap(buf->buf, offset); |
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107 break; |
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108 |
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109 case 't': |
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110 fdt_set_off_dt_struct(buf->buf, offset); |
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111 if (version >= 17) |
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112 fdt_set_size_dt_struct(buf->buf, size); |
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113 break; |
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114 |
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115 case 's': |
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116 fdt_set_off_dt_strings(buf->buf, offset); |
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117 fdt_set_size_dt_strings(buf->buf, size); |
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118 break; |
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119 } |
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120 } |
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121 |
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122 int main(int argc, char *argv[]) |
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123 { |
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124 void *fdt; |
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125 int version; |
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126 const char *blockorder; |
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127 struct bufstate buf = {NULL, 0}; |
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128 int err; |
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129 const char *inname; |
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130 char outname[PATH_MAX]; |
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131 |
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132 test_init(argc, argv); |
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133 if (argc != 4) |
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134 CONFIG("Usage: %s <dtb file> <version> <block order>", argv[0]); |
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135 |
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136 inname = argv[1]; |
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137 fdt = load_blob(argv[1]); |
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138 version = atoi(argv[2]); |
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139 blockorder = argv[3]; |
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140 sprintf(outname, "v%d.%s.%s", version, blockorder, inname); |
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141 |
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142 if ((version != 16) && (version != 17)) |
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143 CONFIG("Version must be 16 or 17"); |
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144 |
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145 if (fdt_version(fdt) < 17) |
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146 CONFIG("Input tree must be v17"); |
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147 |
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148 new_header(&buf, version, fdt); |
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149 |
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150 while (*blockorder) { |
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151 add_block(&buf, version, *blockorder, fdt); |
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152 blockorder++; |
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153 } |
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154 |
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155 fdt_set_totalsize(buf.buf, buf.size); |
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156 |
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157 err = fdt_check_header(buf.buf); |
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158 if (err) |
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159 FAIL("Output tree fails check: %s", fdt_strerror(err)); |
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160 |
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161 save_blob(outname, buf.buf); |
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162 |
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163 PASS(); |
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164 } |