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fwupdate: add support for boot partition reallocation

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This commit is contained in:
Calin Crisan 2019-02-01 23:36:18 +02:00
parent da4957f137
commit 91389abbf2
1 changed files with 57 additions and 22 deletions
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79
board/common/overlay/sbin/fwupdate
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@ -35,6 +35,7 @@ fi
#### configuration ####
set -a
set -e
SYS_VERSION_FILE=/etc/version
SYS_BOARD_FILE=/etc/board
@ -81,8 +82,6 @@ else
exit 1
fi
set +a
#### versions ####
@ -255,19 +254,19 @@ function do_extract() {
# verify available partition space
fw_boot_info=$(fdisk -l -o device,start,end,size ${FW_DIR}/${FW_FILE_EXTR} | grep "${FW_FILE_EXTR}1")
fw_boot_info=$(fdisk --bytes -l -o device,start,end,size ${FW_DIR}/${FW_FILE_EXTR} | grep "${FW_FILE_EXTR}1")
fw_boot_info=(${fw_boot_info})
fw_boot_size=${fw_boot_info[3]}
fw_root_info=$(fdisk -l -o device,start,end,size ${FW_DIR}/${FW_FILE_EXTR} | grep "${FW_FILE_EXTR}2")
fw_root_info=$(fdisk --bytes -l -o device,start,end,size ${FW_DIR}/${FW_FILE_EXTR} | grep "${FW_FILE_EXTR}2")
fw_root_info=(${fw_root_info})
fw_root_size=${fw_root_info[3]}
disk_boot_info=$(fdisk -l -o device,start,end,size ${DISK_DEV} | grep ${BOOT_DEV})
disk_boot_info=$(fdisk --bytes -l -o device,start,end,size ${DISK_DEV} | grep ${BOOT_DEV})
disk_boot_info=(${disk_boot_info})
disk_boot_size=${disk_boot_info[3]}
disk_root_info=$(fdisk -l -o device,start,end,size ${DISK_DEV} | grep ${ROOT_DEV})
disk_root_info=$(fdisk --bytes -l -o device,start,end,size ${DISK_DEV} | grep ${ROOT_DEV})
disk_root_info=(${disk_root_info})
disk_root_size=${disk_root_info[3]}
@ -307,34 +306,73 @@ function extract_status() {
#### flash boot ####
function reallocate_boot_part() {
boot_info=$(fdisk --bytes -l -o device,start,end,size ${DISK_DEV} | grep "${BOOT_DEV}")
boot_info=(${boot_info})
root_info=$(fdisk --bytes -l -o device,start,end,size ${DISK_DEV} | grep "${ROOT_DEV}")
root_info=(${root_info})
fw_boot_info=$(fdisk --bytes -l -o device,start,end,size ${FW_DIR}/${FW_FILE_EXTR} | grep "${FW_FILE_EXTR}1")
fw_boot_info=(${fw_boot_info})
if [[ ${boot_info[1]} == ${fw_boot_info[1]} ]] &&
[[ ${boot_info[2]} == ${fw_boot_info[2]} ]]; then
return # all good
fi
echo "reallocating boot partition..."
# check overlapping with root partition
if [[ ${fw_boot_info[2]} -ge ${root_info[1]} ]]; then
echo "cannot reallocate boot partition: will overlap with root"
return 1
fi
fdisk -w auto ${DISK_DEV} >/dev/null <<END
d
1
n
p
1
${fw_boot_info[1]}
${fw_boot_info[2]}
w
END
sync
}
function do_flash_boot() {
echo "flashing boot..."
rm -f ${FW_DIR}/${BOOT_READY_FILE}
set +e
board=$(cat ${SYS_BOARD_FILE})
cp -r /boot ${FW_DIR}/old_boot
umount /boot
trap flash_cleanup EXIT
# prevent unwanted reboots during upgrade
mount -o remount,rw /
mv /sbin/reboot /sbin/reboot.bak
ln -s /bin/true /sbin/reboot
boot_info=$(fdisk -l -o device,start,end,size ${FW_DIR}/${FW_FILE_EXTR} | grep "${FW_FILE_EXTR}1")
boot_info=$(fdisk --bytes -l -o device,start,end,size ${FW_DIR}/${FW_FILE_EXTR} | grep "${FW_FILE_EXTR}1")
boot_info=(${boot_info})
boot_start=$((${boot_info[1]} / 2048)) # in MB
boot_size=$((${boot_info[3]} / 1048576)) # in MB
root_info=$(fdisk -l -o device,start,end,size ${FW_DIR}/${FW_FILE_EXTR} | grep "${FW_FILE_EXTR}2")
root_info=$(fdisk --bytes -l -o device,start,end,size ${FW_DIR}/${FW_FILE_EXTR} | grep "${FW_FILE_EXTR}2")
root_info=(${root_info})
root_start=$((${root_info[1]} / 2048)) # in MB
root_size=$((${root_info[3]} / 1048576)) # in MB
echo ${root_start} ${root_size} > ${FW_DIR}/${ROOT_INFO_FILE}
reallocate_boot_part
dd if=${FW_DIR}/${FW_FILE_EXTR} skip=${boot_start} of=${BOOT_DEV} bs=1048576 count=${boot_size} &>${FW_DIR}/${DD_LOG_FILE} &
pid=$!
echo ${pid} > ${FW_DIR}/${DD_PID_FILE}
@ -404,13 +442,13 @@ function run_pre_upgrade() {
}
function reallocate_root_part() {
root_info=$(fdisk -l -o device,start,end,size ${DISK_DEV} | grep "${ROOT_DEV}")
root_info=$(fdisk --bytes -l -o device,start,end,size ${DISK_DEV} | grep "${ROOT_DEV}")
root_info=(${root_info})
data_info=$(fdisk -l -o device,start,end,size ${DISK_DEV} | grep "${DATA_DEV}")
data_info=$(fdisk --bytes -l -o device,start,end,size ${DISK_DEV} | grep "${DATA_DEV}")
data_info=(${data_info})
fw_root_info=$(fdisk -l -o device,start,end,size ${FW_DIR}/${FW_FILE_EXTR} | grep "${FW_FILE_EXTR}2")
fw_root_info=$(fdisk --bytes -l -o device,start,end,size ${FW_DIR}/${FW_FILE_EXTR} | grep "${FW_FILE_EXTR}2")
fw_root_info=(${fw_root_info})
if [[ ${root_info[1]} == ${fw_root_info[1]} ]] &&
@ -419,21 +457,22 @@ function reallocate_root_part() {
return # all good
fi
echo "reallocating root partition..."
# check overlapping with data partition
if [[ ${fw_root_info[2]} -ge ${data_info[1]} ]]; then
echo "cannot reallocate root partition: will overlap with data"
return 1
fi
fdisk ${DISK_DEV} >/dev/null <<END
fdisk -w auto ${DISK_DEV} >/dev/null <<END
d
2
n
p
2
${new_root_info[1]}
${new_root_info[2]}
y
${fw_root_info[1]}
${fw_root_info[2]}
w
END
sync
@ -445,8 +484,8 @@ function do_flash_reboot() {
return 1
fi
run_pre_upgrade || return 1
reallocate_root_part || return 1
run_pre_upgrade
reallocate_root_part
echo "preparing for reboot..."
@ -527,8 +566,6 @@ function show_status() {
function do_upgrade() {
echo "upgrading to $1"
set -e
do_download "$1"
show_status
@ -544,8 +581,6 @@ function do_upgrade() {
function do_clean_upgrade() {
echo "clean upgrading to $1"
set -e
do_download "$1"
show_status