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authorTomasz Maciej Nowak <tomek_n@o2.pl>2019-04-01 19:25:38 +0200
committerHauke Mehrtens <hauke@hauke-m.de>2019-04-06 14:48:46 +0200
commit42f96ed9413a3483b0448581374feeb3343f6f6a (patch)
tree64dcc9c3a418ecec29a6654d75746574e4c0902a /target/linux/tegra/base-files/lib
parentde3eb0d8a060b1eb4e4027ebc435bb412ce8e096 (diff)
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tegra: add new target
New target introduces initial support for NVIDIA Tegra SoC based devices. It focuses on Tegra 2 CPUs, for successors supporting NEON instruction set the target should be split in two subtargets. This initial commit doesn't create any device image, it's groundwork for further additions. Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
Diffstat (limited to 'target/linux/tegra/base-files/lib')
-rw-r--r--target/linux/tegra/base-files/lib/preinit/79_move_config22
-rw-r--r--target/linux/tegra/base-files/lib/upgrade/platform.sh103
2 files changed, 125 insertions, 0 deletions
diff --git a/target/linux/tegra/base-files/lib/preinit/79_move_config b/target/linux/tegra/base-files/lib/preinit/79_move_config
new file mode 100644
index 0000000000..2a451a5efd
--- /dev/null
+++ b/target/linux/tegra/base-files/lib/preinit/79_move_config
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+move_config() {
+ local partdev
+
+ . /lib/upgrade/common.sh
+
+ if export_bootdevice && export_partdevice partdev 1; then
+ mkdir -p /boot
+ if mount -o ro,noatime "/dev/$partdev" /boot; then
+ if [ -f /boot/sysupgrade.tgz ]; then
+ mount /boot -o remount,rw,noatime
+ mv -f /boot/sysupgrade.tgz /
+ fi
+ umount /boot
+ rm -fR /boot
+ fi
+ fi
+}
+
+boot_hook_add preinit_mount_root move_config
+
diff --git a/target/linux/tegra/base-files/lib/upgrade/platform.sh b/target/linux/tegra/base-files/lib/upgrade/platform.sh
new file mode 100644
index 0000000000..be453bdf9f
--- /dev/null
+++ b/target/linux/tegra/base-files/lib/upgrade/platform.sh
@@ -0,0 +1,103 @@
+REQUIRE_IMAGE_METADATA=1
+
+get_magic_at() {
+ local pos="$2"
+ get_image "$1" | dd bs=1 count=2 skip="$pos" 2>/dev/null | hexdump -v -n 2 -e '1/1 "%02x"'
+}
+
+platform_check_image() {
+ local diskdev partdev diff
+
+ [ "$#" -gt 1 ] && return 1
+
+ case "$(get_magic_at "$1" 510)" in
+ 55aa) ;;
+ *)
+ echo "Failed to verify MBR boot signature."
+ return 1
+ ;;
+ esac
+
+ export_bootdevice && export_partdevice diskdev 0 || {
+ echo "Unable to determine upgrade device"
+ return 1
+ }
+
+ get_partitions "/dev/$diskdev" bootdisk
+
+ #extract the boot sector from the image
+ get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b 2>/dev/null
+
+ get_partitions /tmp/image.bs image
+
+ #compare tables
+ diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
+
+ rm -f /tmp/image.bs /tmp/partmap.bootdisk /tmp/partmap.image
+
+ if [ -n "$diff" ]; then
+ echo "Partition layout has changed. Full image will be written."
+ ask_bool 0 "Abort" && exit 1
+ return 0
+ fi
+}
+
+platform_copy_config() {
+ local partdev
+
+ if export_partdevice partdev 1; then
+ mount -o rw,noatime "/dev/$partdev" /mnt
+ cp -af "$CONF_TAR" /mnt/
+ umount /mnt
+ fi
+}
+
+platform_do_upgrade() {
+ local diskdev partdev diff
+
+ export_bootdevice && export_partdevice diskdev 0 || {
+ echo "Unable to determine upgrade device"
+ return 1
+ }
+
+ sync
+
+ if [ "$SAVE_PARTITIONS" = "1" ]; then
+ get_partitions "/dev/$diskdev" bootdisk
+
+ #extract the boot sector from the image
+ get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b
+
+ get_partitions /tmp/image.bs image
+
+ #compare tables
+ diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
+ else
+ diff=1
+ fi
+
+ if [ -n "$diff" ]; then
+ get_image "$@" | dd of="/dev/$diskdev" bs=4096 conv=fsync
+
+ # Separate removal and addtion is necessary; otherwise, partition 1
+ # will be missing if it overlaps with the old partition 2
+ partx -d - "/dev/$diskdev"
+ partx -a - "/dev/$diskdev"
+
+ return 0
+ fi
+
+ #iterate over each partition from the image and write it to the boot disk
+ while read part start size; do
+ if export_partdevice partdev $part; then
+ echo "Writing image to /dev/$partdev..."
+ get_image "$@" | dd of="/dev/$partdev" ibs="512" obs=1M skip="$start" count="$size" conv=fsync
+ else
+ echo "Unable to find partition $part device, skipped."
+ fi
+ done < /tmp/partmap.image
+
+ #copy partition uuid
+ echo "Writing new UUID to /dev/$diskdev..."
+ get_image "$@" | dd of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync
+}