1#!/bin/sh 2 3bios_reset_if_needed() { 4 resetval=$(fw_printenv -n rwreset 2>/dev/nell) 5 if [ "$resetval" = "0" ] || [ "$resetval" = "1" ]; then 6 varstore="/media/hostfw/reset-gpio-val" 7 if [ -f "$varstore" ]; then 8 if [ "$resetval" != "$(cat $varstore)" ]; then 9 if busctl call org.open_power.Software.Host.Updater /xyz/openbmc_project/software xyz.openbmc_project.Common.FactoryReset Reset; then 10 echo "$resetval" > "$varstore" 11 fi 12 fi 13 else 14 echo "$resetval" > "$varstore" 15 fi 16 fi 17} 18 19mmc_init() { 20 base_dir="/media/hostfw" 21 ro_dir="${base_dir}/running-ro" 22 running_dir="${base_dir}/running" 23 prsv_dir="${base_dir}/prsv" 24 staging_dir="${base_dir}/staging" 25 nvram_dir="${base_dir}/nvram" 26 27 if [ ! -d "${ro_dir}" ]; then 28 mkdir -p "${ro_dir}" 29 fi 30 if [ ! -d "${running_dir}" ]; then 31 mkdir -p ${running_dir} 32 fi 33 if [ ! -d "${prsv_dir}" ]; then 34 mkdir -p "${prsv_dir}" 35 fi 36 if [ ! -d "${staging_dir}" ]; then 37 mkdir -p "${staging_dir}" 38 fi 39 if [ ! -d "${nvram_dir}" ]; then 40 mkdir -p "${nvram_dir}" 41 fi 42 43 # Mount the image that corresponds to the boot label as read-only to be used 44 # to populate the running directory. 45 boot_label="$(fw_printenv -n bootside)" 46 if ! grep -q "${ro_dir}" /proc/mounts; then 47 mount ${base_dir}/hostfw-"${boot_label}" ${ro_dir} -o ro 48 fi 49 50 # Determine if the running dir contains the running version 51 running_label="" 52 running_label_file="${running_dir}/partlabel" 53 if [ -f "${running_label_file}" ]; then 54 running_label=$(cat ${running_label_file}) 55 fi 56 if [ "${running_label}" != "${boot_label}" ]; then 57 # Copy off the preserved partitions 58 # A line in the pnor.toc (81e00994.lid) looks like this: 59 # partition05=SECBOOT,0x00381000,0x003a5000,00,ECC,PRESERVED 60 rm -f ${prsv_dir}/* 61 if [ -f "${ro_dir}/81e00994.lid" ]; then 62 prsvs=$(grep PRESERVED "${ro_dir}/81e00994.lid") 63 for prsv in ${prsvs}; do 64 prsv=${prsv##partition*=} 65 prsv=$(echo "${prsv}" | cut -d "," -f 1) 66 if [ -L "${running_dir}/${prsv}" ]; then 67 # Preserve the symlink target file 68 prsv="$(readlink "${running_dir}/${prsv}")" 69 runsize="$(stat -c '%s' "${running_dir}/${prsv}")" 70 rosize="$(stat -c '%s' "${ro_dir}/${prsv}")" 71 if [ "$runsize" != "$rosize" ]; then 72 # Partition size may have changed or became corrupted 73 # So it will not be copied to the preserved directory 74 # Log PEL to indicate such 75 busctl call xyz.openbmc_project.Logging \ 76 /xyz/openbmc_project/logging \ 77 xyz.openbmc_project.Logging.Create Create "ssa{ss}" \ 78 xyz.openbmc_project.Software.Version.Error.HostFile \ 79 xyz.openbmc_project.Logging.Entry.Level.Error 3 "FILE_NAME" \ 80 "${prsv}" "CURRENT_FILE_SIZE" "${runsize}" "EXPECTED_FILE_SIZE" \ 81 "${rosize}" 82 # Initiate dump 83 busctl call xyz.openbmc_project.Dump.Manager \ 84 /xyz/openbmc_project/dump/bmc xyz.openbmc_project.Dump.Create \ 85 CreateDump "a{sv}" 0 86 else 87 cp -p ${running_dir}/"${prsv}" ${prsv_dir} 88 fi 89 fi 90 done 91 fi 92 93 # Copy lid contents of running image to running dir 94 rm -f ${running_dir}/* 95 cp -p ${ro_dir}/*.lid ${running_dir}/ 96 97 # Restore the preserved partitions. Ignore error, there may be none. 98 cp -p ${prsv_dir}/* ${running_dir}/ 2>/dev/null || true 99 rm -f "${prsv_dir:?}/"* 100 101 # Clean up the staging dir in case of a failed update 102 rm -rf "${staging_dir:?}/"* 103 104 # Save the label 105 echo "${boot_label}" > "${running_label_file}" 106 107 fi 108 109 # Mount alternate dir 110 if [ "${boot_label}" = "a" ]; then 111 alternate_label="b" 112 else 113 alternate_label="a" 114 fi 115 alternate_dir="${base_dir}/alternate" 116 if [ ! -d "${alternate_dir}" ]; then 117 mkdir -p ${alternate_dir} 118 fi 119 if ! grep -q "${alternate_dir}" /proc/mounts; then 120 mount ${base_dir}/hostfw-${alternate_label} ${alternate_dir} -o ro 121 fi 122} 123 124mmc_patch() { 125 # Patching is disabled if field mode is set 126 if [ "$(fw_printenv fieldmode 2>/dev/null)" = "fieldmode=true" ]; then 127 return 0 128 fi 129 130 boot_label="$(fw_printenv -n bootside)" 131 if [ "${boot_label}" = "a" ]; then 132 alternate_label="b" 133 else 134 alternate_label="a" 135 fi 136 137 # Create patch directories 138 patch_dir="/media/hostfw/patch-" 139 running_patch_dir="${patch_dir}${boot_label}" 140 if [ ! -d "${running_patch_dir}" ]; then 141 mkdir -p "${running_patch_dir}" 142 fi 143 alternate_patch_dir="${patch_dir}${alternate_label}" 144 if [ ! -d "${alternate_patch_dir}" ]; then 145 mkdir -p "${alternate_patch_dir}" 146 fi 147 148 # Create patch symlinks 149 symlink_base="/usr/local/share" 150 if [ ! -d "${symlink_base}" ]; then 151 mkdir -p "${symlink_base}" 152 fi 153 hostfw_symlink_base="${symlink_base}/hostfw" 154 if [ ! -d "${hostfw_symlink_base}" ]; then 155 mkdir -p "${hostfw_symlink_base}" 156 fi 157 158 if [ "$(readlink -f "${symlink_base}/pnor")" != "${running_patch_dir}" ]; then 159 ln -s "${running_patch_dir}" "${symlink_base}/pnor" 160 fi 161 if [ "$(readlink -f "${hostfw_symlink_base}/running")" != "${running_patch_dir}" ]; then 162 ln -s "${running_patch_dir}" "${hostfw_symlink_base}/running" 163 fi 164 if [ "$(readlink -f "${hostfw_symlink_base}/alternate")" != "${alternate_patch_dir}" ]; then 165 ln -s "${alternate_patch_dir}" "${hostfw_symlink_base}/alternate" 166 fi 167} 168 169case "$1" in 170 bios-reset-if-needed) 171 bios_reset_if_needed 172 ;; 173 mmc-init) 174 mmc_init 175 ;; 176 mmc-patch) 177 mmc_patch 178 ;; 179 *) 180 echo "Invalid argument: $1" >&2 181 exit 1 182 ;; 183esac 184