1 | #!/bin/bash |
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2 | |
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3 | # check for required files |
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4 | for i in flash.bin flash.log .config; do |
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5 | if [ ! -f $i ]; then |
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6 | echo "Missing $i! Please make sure to 'make flash.bin' first" |
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7 | exit 1 |
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8 | fi |
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9 | done |
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10 | |
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11 | # check for required env |
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12 | if [ -z "$CST_BIN" ] || [ ! -f $CST_BIN ]; then |
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13 | echo "Missing CST_BIN variable!" |
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14 | exit 1 |
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15 | fi |
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16 | if [ -z "$SIGN_KEY" ] || [ ! -f $SIGN_KEY ]; then |
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17 | echo "Missing SIGN_KEY variable!" |
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18 | exit 1 |
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19 | fi |
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20 | if [ -z "$IMG_KEY" ] || [ ! -f $IMG_KEY ]; then |
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21 | echo "Missing IMG_KEY variable!" |
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22 | exit 1 |
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23 | fi |
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24 | if [ -z "$SRK_TABLE" ] || [ ! -f $SRK_TABLE ]; then |
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25 | echo "Missing SRK_TABLE variable!" |
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26 | exit 1 |
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27 | fi |
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28 | |
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29 | # |
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30 | # create csf_spl.txt |
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31 | # |
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32 | csf_spl() { |
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33 | SPL_START_ADDR=`awk '/spl hab block/{print $4}' flash.log` |
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34 | SPL_OFFSET=`awk '/spl hab block/{print $5}' flash.log` |
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35 | SPL_LENGTH=`awk '/spl hab block/{print $6}' flash.log` |
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36 | |
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37 | cat << EOF |
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38 | [Header] |
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39 | Version = 4.3 |
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40 | Hash Algorithm = sha256 |
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41 | Engine = CAAM |
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42 | Engine Configuration = 0 |
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43 | Certificate Format = X509 |
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44 | Signature Format = CMS |
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45 | |
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46 | [Install SRK] |
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47 | # Index of the key location in the SRK table to be installed |
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48 | File = "$SRK_TABLE" |
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49 | Source index = 0 |
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50 | |
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51 | [Install CSFK] |
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52 | # Key used to authenticate the CSF data |
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53 | File = "$SIGN_KEY" |
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54 | |
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55 | [Authenticate CSF] |
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56 | |
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57 | [Unlock] |
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58 | # Leave Job Ring and DECO master ID registers Unlocked |
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59 | Engine = CAAM |
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60 | Features = MID |
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61 | |
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62 | [Install Key] |
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63 | # Key slot index used to authenticate the key to be installed |
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64 | Verification index = 0 |
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65 | # Target key slot in HAB key store where key will be installed |
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66 | Target index = 2 |
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67 | # Key to install |
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68 | File = "$IMG_KEY" |
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69 | |
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70 | [Authenticate Data] |
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71 | # Key slot index used to authenticate the image data |
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72 | Verification index = 2 |
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73 | # Authenticate Start Address, Offset, Length and file |
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74 | Blocks = $SPL_START_ADDR $SPL_OFFSET $SPL_LENGTH "flash.bin" |
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75 | EOF |
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76 | } |
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77 | |
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78 | # |
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79 | # create csf_fit.txt |
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80 | # |
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81 | # Assumes using FIT generator (arch/arm/mach-imx/mkimage_fit_atf.sh) |
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82 | # which puts blobs in this order: |
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83 | # u-boot-nodtb.bin (U-Boot) |
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84 | # u-boot.dtb (dtb's) |
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85 | # bl31.bin (ATF) |
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86 | # |
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87 | csf_fit() { |
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88 | cat << EOF |
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89 | [Header] |
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90 | Version = 4.3 |
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91 | Hash Algorithm = sha256 |
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92 | Engine = CAAM |
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93 | Engine Configuration = 0 |
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94 | Certificate Format = X509 |
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95 | Signature Format = CMS |
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96 | |
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97 | [Install SRK] |
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98 | # Index of the key location in the SRK table to be installed |
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99 | File = "$SRK_TABLE" |
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100 | Source index = 0 |
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101 | |
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102 | [Install CSFK] |
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103 | # Key used to authenticate the CSF data |
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104 | File = "$SIGN_KEY" |
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105 | |
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106 | [Authenticate CSF] |
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107 | |
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108 | [Install Key] |
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109 | # Key slot index used to authenticate the key to be installed |
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110 | Verification index = 0 |
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111 | # Target key slot in HAB key store where key will be installed |
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112 | Target index = 2 |
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113 | # Key to install |
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114 | File = "$IMG_KEY" |
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115 | |
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116 | [Authenticate Data] |
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117 | # Key slot index used to authenticate the image data |
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118 | Verification index = 2 |
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119 | # Authenticate Start Address, Offset, Length and file |
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120 | Blocks = \\ |
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121 | EOF |
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122 | |
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123 | # FIT |
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124 | FIT_START_ADDR=`awk '/sld hab block/{print $4}' flash.log` |
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125 | FIT_OFFSET=`awk '/sld hab block/{print $5}' flash.log` |
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126 | FIT_LENGTH=`awk '/sld hab block/{print $6}' flash.log` |
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127 | printf " 0x%08x 0x%08x 0x%08x \"flash.bin\", \\ \n" \ |
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128 | $FIT_START_ADDR $FIT_OFFSET $FIT_LENGTH |
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129 | |
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130 | # U-Boot |
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131 | BL32="tee.bin" |
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132 | BL31="bl31.bin" |
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133 | source .config |
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134 | # TODO: this should be calculated from |
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135 | # CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR in include/autoconf.mk |
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136 | # (0x300*512) |
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137 | fit_off=0x60000 |
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138 | if grep -Eq "^CONFIG_IMX8MQ=y$" .config; then |
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139 | TEE_LOAD_ADDR=0xfe000000 |
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140 | ATF_LOAD_ADDR=0x00910000 |
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141 | VERSION=v1 |
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142 | elif grep -Eq "^CONFIG_IMX8MM=y$" .config; then |
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143 | TEE_LOAD_ADDR=0xbe000000 |
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144 | ATF_LOAD_ADDR=0x00920000 |
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145 | VERSION=v1 |
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146 | elif grep -Eq "^CONFIG_IMX8MN=y$" .config; then |
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147 | TEE_LOAD_ADDR=0xbe000000 |
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148 | ATF_LOAD_ADDR=0x00960000 |
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149 | VERSION=v2 |
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150 | fi |
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151 | if [ -z "$ATF_LOAD_ADDR" ]; then |
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152 | echo "ERROR: BL31 load address is not set" >&2 |
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153 | exit 0 |
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154 | fi |
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155 | if [ "$VERSION" = "v1" ]; then |
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156 | ivt_off=0x400 |
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157 | else |
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158 | ivt_off=0x0 |
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159 | fi |
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160 | # IMX8MM: flash.bin goes to 33KB (0x8400 = 0x8000 + 0x400) |
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161 | # IMX8MN: flash.bin goes to 32KB (0x8000 = 0x8000 + 0x0) |
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162 | uboot_sign_off=$((fit_off - 0x8000 - ivt_off + 0x3000)) |
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163 | uboot_size=$(stat -c "%s" u-boot-nodtb.bin) |
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164 | uboot_load_addr=$CONFIG_SYS_TEXT_BASE |
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165 | last_sign_off=$(((uboot_sign_off + uboot_size + 3) & ~3)) |
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166 | last_load_addr=$((uboot_load_addr + uboot_size)) |
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167 | printf " 0x%08x 0x%08x 0x%08x \"flash.bin\", \\ \n" \ |
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168 | $uboot_load_addr $uboot_sign_off $uboot_size |
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169 | |
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170 | # DTB's |
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171 | for i in $CONFIG_OF_LIST; do |
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172 | fdt_size=$(stat -c "%s" arch/arm/dts/$i.dtb) |
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173 | fdt_sign_off=$((last_sign_off)) |
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174 | fdt_load_addr=$((last_load_addr)) |
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175 | last_size=$((fdt_size)) |
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176 | last_sign_off=$(((last_sign_off + fdt_size + 3) & ~3)) |
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177 | last_load_addr=$((last_load_addr + fdt_size)) |
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178 | printf " 0x%08x 0x%08x 0x%08x \"flash.bin\", \\ \n" \ |
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179 | $fdt_load_addr $fdt_sign_off $fdt_size |
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180 | done |
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181 | |
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182 | # ATF |
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183 | atf_sign_off=$((last_sign_off)) |
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184 | atf_load_addr=$ATF_LOAD_ADDR |
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185 | atf_size=$(stat -c "%s" $BL31) |
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186 | if [ ! -f $BL32 ]; then |
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187 | printf " 0x%08x 0x%08x 0x%08x \"flash.bin\"\n" \ |
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188 | $atf_load_addr $atf_sign_off $atf_size |
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189 | else |
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190 | tee_size=$(stat -c "%s" tee.bin) |
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191 | tee_sign_off=$(((atf_sign_off + atf_size + 3) & ~3)) |
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192 | tee_load_addr=$TEE_LOAD_ADDR |
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193 | printf " 0x%08x 0x%08x 0x%08x \"flash.bin\", \\ \n" \ |
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194 | $atf_load_addr $atf_sign_off $atf_size |
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195 | printf " 0x%08x 0x%08x 0x%08x \"flash.bin\"\n" \ |
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196 | $tee_load_addr $tee_sign_off $tee_size |
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197 | fi |
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198 | } |
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199 | |
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200 | # generate templates |
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201 | csf_spl > csf_spl.txt |
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202 | csf_fit > csf_fit.txt |
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203 | |
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204 | # generate signatures |
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205 | $CST_BIN -i csf_spl.txt -o csf_spl.bin |
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206 | $CST_BIN -i csf_fit.txt -o csf_fit.bin |
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207 | |
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208 | # copy signatures into binary |
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209 | CSF_SPL_OFFSET=`awk '/csf_off/{print $2}' flash.log | head -n 1` |
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210 | CSF_FIT_OFFSET=`awk '/csf_off/{print $2}' flash.log | tail -n 1` |
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211 | cp flash.bin signed_flash.bin |
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212 | dd if=csf_spl.bin of=signed_flash.bin seek=$(($CSF_SPL_OFFSET)) bs=1 conv=notrunc |
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213 | dd if=csf_fit.bin of=signed_flash.bin seek=$(($CSF_FIT_OFFSET)) bs=1 conv=notrunc |
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214 | |
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215 | echo "signed_flash.bin is ready!" |
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