From 952087741a2c882966f7598a8208c295cdf57483 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Thu, 23 Oct 2014 14:17:50 -0400
Subject: Generate *.fw files with CRCs without Perl

---
diff --git a/build b/build
index a906389..c7fe758 100755
--- a/build
+++ b/build
@@ -9,4 +9,5 @@ build:
 	mkdir -p src/toolchain/dl/
 	(cd src/toolchain/dl/ && ln -sf ../../../../toolchain/* ./)
 	oh-autobuild -T toolchain
+	chmod a+x src/target_firmware/firmware-crc.sh
 	oh-autobuild -B src/target_firmware
diff --git a/patches/01_firmware-crc-sh.patch b/patches/01_firmware-crc-sh.patch
new file mode 100644
index 0000000..bdadbce
--- /dev/null
+++ b/patches/01_firmware-crc-sh.patch
@@ -0,0 +1,44 @@
+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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