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mkimage.sh: add support for custom loop dev

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This commit is contained in:
Calin Crisan 2019-05-18 23:13:31 +03:00
parent 44bd948185
commit d8e88f888f
1 changed files with 16 additions and 5 deletions
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21
board/common/mkimage.sh
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@ -1,5 +1,13 @@
#!/bin/bash -e
# env vars:
# THINGOS_LOOP_DEV=/dev/loop0
# THINGOS_NAME=thingOS
# THINGOS_SHORT_NAME=thingos
# THINGOS_PREFIX=thing
# THINGOS_VERSION=3.14.15
if [ -z "${IMG_DIR}" ] || [ -z "${BOARD}" ]; then
echo "this script must be invoked from board specific mkimage.sh"
exit 1
@ -30,10 +38,13 @@ DISK_SIZE=$((ROOT_START + ROOT_SIZE + GUARD_SIZE))
COMMON_DIR=$(cd ${IMG_DIR}/../../../board/common; pwd)
OS_NAME=$(source ${COMMON_DIR}/overlay/etc/version && echo ${OS_SHORT_NAME})
# "-f", unless a /dev/loopX is specified
LOOP_DEV=${THINGOS_LOOP_DEV:--f}
# boot filesystem
msg "creating boot loop device"
dd if=/dev/zero of=${BOOT_IMG} bs=1M count=${BOOT_SIZE}
loop_dev=$(losetup -f --show ${BOOT_IMG})
loop_dev=$(losetup --show ${LOOP_DEV} ${BOOT_IMG})
msg "creating boot filesystem"
mkfs.vfat -F16 ${loop_dev}
@ -56,7 +67,7 @@ sync
# root filesystem
msg "creating root loop device"
dd if=/dev/zero of=${ROOT_IMG} bs=1M count=${ROOT_SIZE}
loop_dev=$(losetup -f --show ${ROOT_IMG})
loop_dev=$(losetup --show ${LOOP_DEV} ${ROOT_IMG})
msg "creating root filesystem"
mkfs.ext4 ${loop_dev}
@ -117,7 +128,7 @@ if [ -n "${UBOOT_BIN}" ] && [ -n "${UBOOT_SEEK}" ]; then
msg "copying u-boot image"
dd conv=notrunc if=${UBOOT_BIN} of=${DISK_IMG} bs=512 seek=${UBOOT_SEEK}
fi
loop_dev=$(losetup -f --show ${DISK_IMG})
loop_dev=$(losetup --show ${LOOP_DEV} ${DISK_IMG})
msg "partitioning disk"
set +e
@ -152,7 +163,7 @@ msg "destroying disk loop device (${loop_dev})"
losetup -d ${loop_dev}
msg "creating boot loop device"
loop_dev=$(losetup -f --show -o $((${boot_offs} * 512)) ${DISK_IMG})
loop_dev=$(losetup --show -o $((${boot_offs} * 512)) ${LOOP_DEV} ${DISK_IMG})
msg "copying boot image"
dd if=${BOOT_IMG} of=${loop_dev}
@ -162,7 +173,7 @@ msg "destroying boot loop device (${loop_dev})"
losetup -d ${loop_dev}
msg "creating root loop device"
loop_dev=$(losetup -f --show -o $((${root_offs} * 512)) ${DISK_IMG})
loop_dev=$(losetup --show -o $((${root_offs} * 512)) ${LOOP_DEV} ${DISK_IMG})
sync
msg "copying root image"