diff options
| -rw-r--r-- | makefile | 25 | ||||
| -rwxr-xr-x | state/gen | 97 | ||||
| -rwxr-xr-x | util/part | 25 |
3 files changed, 99 insertions, 48 deletions
@@ -18,7 +18,8 @@ CTRIZE += --env-file ./env CTRIZE += $(CTR_IMG_TAG) export -# create files that represent otherwise PHONY targets +# create dummy files to represent non-file targets (container image build +# status, sd card partition status, git submodule initialization, etc.) $(shell state/gen) -include state/auto.mk @@ -26,8 +27,12 @@ $(shell state/gen) include ./env export +# shortcuts .PHONY: all all: $(BOOTLOADER_FILES) +.PHONY: sd_format sd_partition +sd_format: state/sdcard_fmt +sd_partition: state/sdcard_part state/container_img: Containerfile $(CTR) build --tag $(CTR_IMG_TAG) . @@ -38,6 +43,15 @@ state/submodules: $(GIT) submodule update touch $@ +state/sdcard_part: + $(AS_ROOT) util/part $(SDCARD_DISK) + touch $@ + +state/sdcard_fmt: state/sdcard_part + $(AS_ROOT) mkfs.vfat -n BOOT -F 32 $(SDCARD_PART_BOOT) + $(AS_ROOT) mkfs.ext4 -L ROOTFS -F $(SDCARD_PART_ROOTFS) + touch $@ + BOOTLOADER_FILES += bootloader/MLO BOOTLOADER_FILES += bootloader/u-boot.img BOOTLOADER_FILES += bootloader/u-boot.dtb @@ -59,8 +73,9 @@ load_bootloader: $(BOOTLOADER_FILES) $(AS_ROOT) $(CP) $(BOOTLOADER_FILES) mnt/boot $(UMOUNT) mnt/boot -.PHONY: sd_format -sd_format: - $(AS_ROOT) mkfs.vfat -n BOOT -F 32 $(SDCARD_PART_BOOT) - $(AS_ROOT) mkfs.ext4 -L ROOTFS -F $(SDCARD_PART_ROOTFS) +.PHONY: status +status: + @echo '### STATUS REPORT' + @echo '# DETECTED SD CARD' + @cat state/auto.mk @@ -4,9 +4,17 @@ exec 1>&2 # create files in the same directory as this script cd "$(dirname "$0")" # do not run anything if make was run with -n (dry run) -# [ "${MAKEFLAGS#*n}" != "$MAKEFLAGS" ] && exit +[ "${MAKEFLAGS#*n}" != "$MAKEFLAGS" ] && exit -touch_rm_exit_code() { [ $? -eq 0 ] && touch "$1" || rm -f "$1" ; } +touch_rm_exit_code() { + PREV_EC="$?" + if [ "$PREV_EC" -eq 0 ] ; then + ! [ -e "$1" ] && touch "$1" + else + rm -f "$1" + fi + return "$PREV_EC" +} # container image (initialized here, updated in makefile) $CTR image exists "$CTR_IMG_TAG" 1> /dev/null 2> /dev/null @@ -16,50 +24,53 @@ touch_rm_exit_code container_img test -z "$(git submodule status | grep '^-')" touch_rm_exit_code submodules -rm -f auto.mk +rm -f sdcard_part sdcard_fmt +# if no explicit SDCARD_DISK is set, guess which device is the sd card by +# checking if it is removable AND has a size of approx. 8GB +if [ -z "$SDCARD_DISK" ] ; then + SDCARD_DISK="$(lsblk --noheadings --bytes --output PATH,SIZE,TYPE,RM | awk ' + $3 != "disk" { next } + $2 < 7900000000 { next } + $2 > 8000000000 { next } + $4 != 1 { next } + { print $1 }' | head -n1)" +fi +if [ -n "$SDCARD_DISK" ] ; then + # check if the sd card is partitioned correctly if no partition path + # variables are set + if [ -z "$SDCARD_PART_BOOT" ] || [ -z "$SDCARD_PART_ROOTFS" ] ; then + PARTS="$(lsblk "$SDCARD_DISK" --bytes --noheadings \ + --output PATH,SIZE,TYPE,PTTYPE,FSTYPE,LABEL,PARTFLAGS)" -# guess which device is the sd card by size (around 8GB) -for SDCARD_DISK in "$(lsblk --noheadings --bytes --output PATH,SIZE,TYPE | awk ' - $3 != "disk" { next } - ($2 < 7900000000) { next } - ($2 > 8000000000) { next } - { print $1 }')" -do - [ -z "$SDCARD_DISK" ] && continue - # check if the sd card is already correctly partitioned & formatted - PARTS="$(lsblk "$SDCARD_DISK" --noheadings --output PATH,SIZE,TYPE,PTTYPE,FSTYPE,LABEL | awk ' - NR == 1 { - if ($4 != "dos") exit(1) - } - NR == 2 { - if ($6 != "BOOT") exit(1) - if ($2 != "64M") exit(1) - if ($5 != "vfat") exit(1) - print $1 - } - NR == 3 { - if ($6 != "ROOTFS") exit(1) - if ($5 != "ext4") exit(1) - print $1 - } - END { if (NR != 3) exit(1) }')" || continue - SDCARD_PART_BOOT="$(echo "$PARTS" | sed '1!d')" - SDCARD_PART_ROOTFS="$(echo "$PARTS" | sed '2!d')" - break -done + # check if the disk is partitioned correctly + echo "$PARTS" | awk ' + $3 == "part" { parts += 1 } + NR == 1 { if ($4 != "dos") exit(1) } + NR == 2 { if ($2 != 64 * 2^20) exit(1) } + END { if (parts != 2) exit(1) }' && touch sdcard_part -if [ -n "$SDCARD_DISK" ]; then - echo "SDCARD_DISK ?= $SDCARD_DISK" >> auto.mk -fi + if [ $? -eq 0 ] ; then + SDCARD_PART_BOOT="$(echo "$PARTS" | awk 'NR == 2 { print $1 }')" + SDCARD_PART_ROOTFS="$(echo "$PARTS" | awk 'NR == 3 { print $1 }')" -if [ -n "$SDCARD_PART_BOOT" ] && [ -n "$SDCARD_PART_ROOTFS" ]; then - echo "SDCARD_PART_BOOT ?= $SDCARD_PART_BOOT" >> auto.mk - echo "SDCARD_PART_ROOTFS ?= $SDCARD_PART_ROOTFS" >> auto.mk - touch sdcard_part_fmt -else - rm -f sdcard_part_fmt + # check if the disk is formatted correctly + echo "$PARTS" | awk ' + NR == 2 { + if ($5 != "vfat") exit(1) + if ($6 != "BOOT") exit(1) + if ($7 != "0x80") exit(1) + } + NR == 3 { + if ($5 != "ext4") exit(1) + if ($6 != "ROOTFS") exit(1) + }' && touch sdcard_fmt + fi + fi fi -# export all variables in auto.mk -echo "export" >> auto.mk +cat << EOF > auto.mk +SDCARD_DISK ?= $SDCARD_DISK +SDCARD_PART_BOOT ?= $SDCARD_PART_BOOT +SDCARD_PART_ROOTFS ?= $SDCARD_PART_ROOTFS +EOF diff --git a/util/part b/util/part new file mode 100755 index 0000000..cf9abe5 --- /dev/null +++ b/util/part @@ -0,0 +1,25 @@ +#!/bin/sh +SDCARD_DISK="$1" +if ! [ -n "$SDCARD_DISK" ] ; then + cat << EOF >&2 +ERROR: could not automatically detect an SD card. Please insert an SD card of +approx. 8GB, or manually set SDCARD_DISK in ./makefile +EOF + exit 1 +fi +if ! [ -w "$SDCARD_DISK" ] ; then + echo "ERROR: cannot not write to $SDCARD_DISK. Are you root?" >&2 + exit 1 +fi +if ! [ -b "$SDCARD_DISK" ] ; then + echo "ERROR: $SDCARD_DISK does not appear to be a block device" >&2 + exit 1 +fi + +set -e + +sfdisk "$SDCARD_DISK" << 'EOF' +label: dos +,64M,0C,* +,+ ,83, +EOF |