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-rw-r--r--target/linux/ar71xx/base-files/lib/upgrade/merakinand.sh137
-rwxr-xr-xtarget/linux/ar71xx/base-files/lib/upgrade/platform.sh7
2 files changed, 144 insertions, 0 deletions
diff --git a/target/linux/ar71xx/base-files/lib/upgrade/merakinand.sh b/target/linux/ar71xx/base-files/lib/upgrade/merakinand.sh
new file mode 100644
index 0000000000..fe78e9ff96
--- /dev/null
+++ b/target/linux/ar71xx/base-files/lib/upgrade/merakinand.sh
@@ -0,0 +1,137 @@
+#!/bin/sh
+#
+# Copyright (C) 2015 Chris Blake <chrisrblake93@gmail.com>
+#
+# Custom upgrade script for Meraki NAND devices (ex. MR18)
+# Based on dir825.sh and stock nand functions
+#
+. /lib/ar71xx.sh
+. /lib/functions.sh
+. /lib/upgrade/nand.sh
+
+get_magic_at() {
+ local mtddev=$1
+ local pos=$2
+ dd bs=1 count=2 skip=$pos if=$mtddev 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
+}
+
+mr18_is_caldata_valid() {
+ local mtddev=$1
+ local magic
+
+ magic=$(get_magic_at $mtddev 4096)
+ [ "$magic" != "0202" ] && return 0
+
+ magic=$(get_magic_at $mtddev 20480)
+ [ "$magic" != "0202" ] && return 0
+
+ magic=$(get_magic_at $mtddev 36864)
+ [ "$magic" != "0202" ] && return 0
+
+ return 1
+}
+
+merakinand_copy_caldata() {
+ local cal_src=$1
+ local cal_dst=$2
+ local ubidev=$( nand_find_ubi $CI_UBIPART )
+ local board_name="$(cat /tmp/sysinfo/board_name)"
+ local rootfs_size="$(ubinfo /dev/ubi0 -N rootfs_data | grep "Size" | awk '{ print $6 }')"
+
+ # Setup partitions using board name, in case of future platforms
+ case "$board_name" in
+ "mr18")
+ # Src is MTD
+ mtd_src=$(find_mtd_chardev $cal_src)
+ [ -n "$mtd_src" ] || {
+ echo "no mtd device found for partition $cal_src"
+ exit 1
+ }
+
+ # Dest is UBI
+ # TODO: possibly add create (hard to do when rootfs_data is expanded & mounted)
+ # Would need to be done from ramdisk
+ mtd_dst="$(nand_find_volume $ubidev $cal_dst)"
+ [ -n "$mtd_dst" ] || {
+ echo "no ubi device found for partition $cal_dst"
+ exit 1
+ }
+
+ mr18_is_caldata_valid "$mtd_src" && {
+ echo "no valid calibration data found in $cal_src"
+ exit 1
+ }
+
+ mr18_is_caldata_valid "/dev/$mtd_dst" && {
+ echo "Copying calibration data from $cal_src to $cal_dst..."
+ dd if="$mtd_src" of=/tmp/caldata.tmp 2>/dev/null
+ ubiupdatevol "/dev/$mtd_dst" /tmp/caldata.tmp
+ rm /tmp/caldata.tmp
+ sync
+ }
+ return 0
+ ;;
+ *)
+ echo "Unsupported device $board_name";
+ return 1
+ ;;
+ esac
+}
+
+merakinand_do_kernel_check() {
+ local board_name="$1"
+ local tar_file="$2"
+ local image_magic_word=`(tar xf $tar_file sysupgrade-$board_name/kernel -O 2>/dev/null | dd bs=1 count=4 skip=0 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"')`
+
+ # What is our kernel magic string?
+ case "$board_name" in
+ "mr18")
+ [ "$image_magic_word" == "8e73ed8a" ] && {
+ echo "pass" && return 0
+ }
+ ;;
+ esac
+
+ exit 1
+}
+
+merakinand_do_platform_check() {
+ local board_name="$1"
+ local tar_file="$2"
+ local control_length=`(tar xf $tar_file sysupgrade-$board_name/CONTROL -O | wc -c) 2> /dev/null`
+ local file_type="$(identify_tar $2 sysupgrade-$board_name/root)"
+ local kernel_magic="$(merakinand_do_kernel_check $1 $2)"
+
+ case "$board_name" in
+ "mr18")
+ [ "$control_length" = 0 -o "$file_type" != "squashfs" -o "$kernel_magic" != "pass" ] && {
+ echo "Invalid sysupgrade file for $board_name"
+ return 1
+ }
+ ;;
+ *)
+ echo "Unsupported device $board_name";
+ return 1
+ ;;
+ esac
+
+ return 0
+}
+
+merakinand_do_upgrade() {
+ local tar_file="$1"
+ local board_name="$(cat /tmp/sysinfo/board_name)"
+
+ # Do we need to do any platform tweaks?
+ case "$board_name" in
+ "mr18")
+ # Check and create UBI caldata if it's invalid
+ merakinand_copy_caldata "odm-caldata" "caldata"
+ nand_do_upgrade $1
+ ;;
+ *)
+ echo "Unsupported device $board_name";
+ exit 1
+ ;;
+ esac
+}
diff --git a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
index 5ec4499b73..bb64ef81bc 100755
--- a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
@@ -434,6 +434,10 @@ platform_check_image() {
}
return 0
;;
+ mr18)
+ merakinand_do_platform_check $board $1
+ return $?;
+ ;;
nbg6716 | \
r6100 | \
wndr3700v4 | \
@@ -494,6 +498,9 @@ platform_pre_upgrade() {
wndr4300 )
nand_do_upgrade "$1"
;;
+ mr18)
+ merakinand_do_upgrade "$1"
+ ;;
esac
}