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Author: "P. J. McDermott" <pj@pehjota.net>
Subject: Replace target_firmware/firmware-crc.pl with a shell script
diff -Naur src.orig/target_firmware/CMakeLists.txt src/target_firmware/CMakeLists.txt
--- src.orig/target_firmware/CMakeLists.txt 2014-09-11 14:35:37.000000000 -0400
+++ src/target_firmware/CMakeLists.txt 2014-10-23 13:45:37.456405846 -0400
@@ -119,6 +119,6 @@
ADD_CUSTOM_COMMAND(
OUTPUT ${FIRMWARE_NAME}
DEPENDS fw.bin
- COMMAND ${CMAKE_SOURCE_DIR}/firmware-crc.pl < fw.bin > ${FIRMWARE_NAME}
+ COMMAND ${CMAKE_SOURCE_DIR}/firmware-crc.sh < fw.bin > ${FIRMWARE_NAME}
)
ADD_CUSTOM_TARGET(gen-firmware ALL DEPENDS ${FIRMWARE_NAME})
diff -Naur src/target_firmware.orig/firmware-crc.sh src/target_firmware/firmware-crc.sh
--- src.orig/target_firmware/firmware-crc.sh 1969-12-31 19:00:00.000000000 -0500
+++ src/target_firmware/firmware-crc.sh 2014-10-23 13:21:56.080985994 -0400
@@ -0,0 +1,26 @@
+#!/bin/sh
+
+crc=0
+while read b1 b2 b3 b4; do
+ v=$(( ($b1 << 24) | ($b2 << 16) | ($b3 << 8) | ($b4 << 0) ))
+ crc=$(( $crc ^ $v ))
+ b1=$(( ($v & 0xFF000000) >> 24 ))
+ b2=$(( ($v & 0x00FF0000) >> 16 ))
+ b3=$(( ($v & 0x0000FF00) >> 8 ))
+ b4=$(( ($v & 0x000000FF) >> 0 ))
+ printf "\\$(printf '%03o' "${b1}")"
+ printf "\\$(printf '%03o' "${b2}")"
+ printf "\\$(printf '%03o' "${b3}")"
+ printf "\\$(printf '%03o' "${b4}")"
+done <<-EOF
+ $(od -An -tu1 -v -w4 -)
+ EOF
+
+b1=$(( ($crc & 0xFF000000) >> 24 ))
+b2=$(( ($crc & 0x00FF0000) >> 16 ))
+b3=$(( ($crc & 0x0000FF00) >> 8 ))
+b4=$(( ($crc & 0x000000FF) >> 0 ))
+printf "\\$(printf '%03o' "${b1}")"
+printf "\\$(printf '%03o' "${b2}")"
+printf "\\$(printf '%03o' "${b3}")"
+printf "\\$(printf '%03o' "${b4}")"
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