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#!/bin/bash
# This script is used to update the firmware of the card FOR Audio card only (Alpxxy) with x and y are numbers.
# Param 1 : mtd partition number of the "fw-user-updatable", see /proc/mtd file and select
# the one of the to be updated card.
#Param 2 : firmware complete filepath
#NOTE : use BASH read, SH read : follow https://stackoverflow.com/questions/226703/how-do-i-prompt-for-yes-no-cancel-input-in-a-linux-shell-script
user_manual(){
echo "Param 1 : mtd partition number of the \"fw-user-updatable\", see /proc/mtd file and select"
echo "Param 2 : firmware complete filepath"
echo "Check user can write to the mtd partition's file"
return 0
}
## MAIN ##
# warn about supported card
#Warn about the card supported model : Alp Audio card.
read -r -n 1 -p "WARNING: This is only for AUDIO based Alp cards (ie Alp222, Alp882 and Alp442) update ? [y/N]:" user_resp
echo # (optional) move to a new line
if [[ ! "$user_resp" =~ ^[Yy]$ ]]
then
# handle exits from shell or function but don't exit interactive shell
[[ "$0" = "$BASH_SOURCE" ]] && echo "CANCELED by User" && exit 1 || return 1
fi
#Check parameters
[ "$#" -ne "2" ] && user_manual && exit 1
fw_partition_path="$1"
source_fw_file="$2"
# /dev/mtd is a character device
[ ! -c "$fw_partition_path" ] && echo "$fw_partition_path Not a C Device" && exit 2
#Write access ?
[ ! -w "$fw_partition_path" ] && echo "Not writeable" && exit 2
# firmware file condition
[ ! -e "$source_fw_file" ] && user_manual && exit 2
[ ! -f "$source_fw_file" ] && user_manual && exit 2
[ ! -s "$source_fw_file" ] && user_manual && exit 2
[ ! -r "$source_fw_file" ] && user_manual && exit 2
#Check available space !! TODO
# It Requires firmware size + 4kB for the extracted HEADER.
#read : BASH extensions used !
read -r -n 1 -p Writing\ "$source_fw_file"\ to\ "$fw_partition_path ? [y/N]: " user_resp
echo # (optional) move to a new line
if [[ ! "$user_resp" =~ ^[Yy]$ ]]
then
# handle exits from shell or function but don't exit interactive shell
[[ "$0" = "$BASH_SOURCE" ]] && echo "CANCELED by User" && exit 1 || return 1
fi
dd if="$source_fw_file" of=fw_header.bin bs=4096 count=1 status=none
if [ "$?" -ne "0" ] ; then
echo "Error when preparing the firmware, check disk size please."
exit 4;
fi
dd if="$source_fw_file" of=fw_body.bin bs=4096 skip=1 seek=1 status=none
if [ "$?" -ne "0" ] ; then
echo "Error when preparing the firmware, check disk size please."
exit 4;
fi
echo "Updating first phase ..."
cat fw_body.bin > "$fw_partition_path"
if [ "$?" -ne "0" ] ; then
echo "!! Update failed DON'T poweroff, correct to retry."
rm -f fw_body.bin fw_header.bin
exit 3;
fi
echo "Updating second phase ..."
cat fw_header.bin > "$fw_partition_path"
if [ "$?" -ne "0" ] ; then
echo "!! Update failed DON'T poweroff, correct to retry."
rm -f fw_body.bin fw_header.bin
exit 3;
fi
echo "Update SUCCEEDED"
rm -f fw_body.bin fw_header.bin
exit 0
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