qts-filter.sh: strip DOS line endings and handle continuation lines

Some Altera Quartus generated files have long lines that are split with a '\' at
the end of the line. It also wOn Windows, rites files in DOS format, which can
confuse some of the processing scripts in this file. This patch solves both issues.

Signed-off-by: Bill Randle <bill.randle@gmail.com>
Cc: Marek Vasut <marex@denx.de>

arch/arm/mach-socfpga/qts-filter.sh

@@ -1,6 +1,14 @@
 #!/bin/sh
 
 #
+# helper function to convert from DOS to Unix, if necessary, and handle
+# lines ending in '\'.
+#
+fix_newlines_in_macros() {
+	sed -n ':next;s/\r$//;/[^\\]\\$/ {N;s/\\\n//;b next};p' $1
+}
+
+#
 # Process iocsr_config_*.[ch]
 # $1:	SoC type
 # $2:	Input handoff directory
@@ -27,14 +35,16 @@ process_iocsr_config() {
 EOF
 
 	# Retrieve the scan chain lengths
-	grep 'CONFIG_HPS_IOCSR_SCANCHAIN[0-9]\+_LENGTH'			\
-		${in_bsp_dir}/generated/iocsr_config_${soc}.h | tr -d "()"
+	fix_newlines_in_macros \
+		${in_bsp_dir}/generated/iocsr_config_${soc}.h |
+	grep 'CONFIG_HPS_IOCSR_SCANCHAIN[0-9]\+_LENGTH'	| tr -d "()"
 
 	echo ""
 
 	# Retrieve the scan chain config and zap the ad-hoc length encoding
-	sed -n '/^const/ !b; :next {/^const/ s/(.*)//;p;n;b next}'	\
-		${in_bsp_dir}/generated/iocsr_config_${soc}.c
+	fix_newlines_in_macros \
+		${in_bsp_dir}/generated/iocsr_config_${soc}.c |
+	sed -n '/^const/ !b; :next {/^const/ s/(.*)//;p;n;b next}'
 
 	cat << EOF
 
@@ -69,8 +79,9 @@ process_pinmux_config() {
 EOF
 
 	# Retrieve the pinmux config and zap the ad-hoc length encoding
-	sed -n '/^unsigned/ !b; :next {/^unsigned/ {s/\[.*\]/[]/;s/unsigned long/const u8/};p;n;b next}' \
-		${in_bsp_dir}/generated/pinmux_config_${soc}.c
+	fix_newlines_in_macros \
+		${in_bsp_dir}/generated/pinmux_config_${soc}.c |
+	sed -n '/^unsigned/ !b; :next {/^unsigned/ {s/\[.*\]/[]/;s/unsigned long/const u8/};p;n;b next}'
 
 	cat << EOF
 
@@ -105,8 +116,9 @@ process_pll_config() {
 EOF
 
 	# Retrieve the pll config and zap parenthesis
-	sed -n '/CONFIG_HPS/ !b; :next {/CONFIG_HPS/ s/[()]//g;/endif/ b;p;n;b next}' \
-		${in_bsp_dir}/generated/pll_config.h
+	fix_newlines_in_macros \
+		${in_bsp_dir}/generated/pll_config.h |
+	sed -n '/CONFIG_HPS/ !b; :next {/CONFIG_HPS/ s/[()]//g;/endif/ b;p;n;b next}'
 
 	cat << EOF
 
@@ -149,32 +161,37 @@ EOF
 
 	echo "/* SDRAM configuration */"
 	# Retrieve the sdram config, zap broken lines and zap parenthesis
-	sed -n "/\\\\$/ {N;s/ \\\\\n/\t/};p"		\
+	fix_newlines_in_macros \
 		${in_bsp_dir}/generated/sdram/sdram_config.h |
+	sed -n "/\\\\$/ {N;s/ \\\\\n/\t/};p" |
 	sed -n '/CONFIG_HPS/ !b; :next {/CONFIG_HPS/ s/[()]//g;/endif/ b;p;n;b next}' |
 		sort -u | grep_sdram_config
 
 	echo ""
 	echo "/* Sequencer auto configuration */"
-	sed -n "/__RW_MGR/ {s/__//;s/ \+\([^ ]\+\)$/\t\1/p}"		\
+	fix_newlines_in_macros \
 		${in_qts_dir}/hps_isw_handoff/*/sequencer_auto.h |
+	sed -n "/__RW_MGR/ {s/__//;s/ \+\([^ ]\+\)$/\t\1/p}" |
 		sort -u | grep_sdram_config
 
 	echo ""
 	echo "/* Sequencer defines configuration */"
-	sed -n "/^#define [^_]/ {s/__//;s/ \+\([^ ]\+\)$/\t\1/p}"	\
+	fix_newlines_in_macros \
 		${in_qts_dir}/hps_isw_handoff/*/sequencer_defines.h |
+	sed -n "/^#define [^_]/ {s/__//;s/ \+\([^ ]\+\)$/\t\1/p}" |
 		sort -u | grep_sdram_config
 
 	echo ""
 	echo "/* Sequencer ac_rom_init configuration */"
-	sed -n '/^const.*\[/ !b; :next {/^const.*\[/ {N;s/\n//;s/alt_u32/u32/;s/\[.*\]/[]/};/endif/ b;p;n;b next}'\
-		${in_qts_dir}/hps_isw_handoff/*/sequencer_auto_ac_init.c
+	fix_newlines_in_macros \
+		${in_qts_dir}/hps_isw_handoff/*/sequencer_auto_ac_init.c |
+	sed -n '/^const.*\[/ !b; :next {/^const.*\[/ {N;s/\n//;s/alt_u32/u32/;s/\[.*\]/[]/};/endif/ b;p;n;b next}'
 
 	echo ""
 	echo "/* Sequencer inst_rom_init configuration */"
-	sed -n '/^const.*\[/ !b; :next {/^const.*\[/ {N;s/\n//;s/alt_u32/u32/;s/\[.*\]/[]/};/endif/ b;p;n;b next}'\
-		${in_qts_dir}/hps_isw_handoff/*/sequencer_auto_inst_init.c
+	fix_newlines_in_macros \
+		${in_qts_dir}/hps_isw_handoff/*/sequencer_auto_inst_init.c |
+	sed -n '/^const.*\[/ !b; :next {/^const.*\[/ {N;s/\n//;s/alt_u32/u32/;s/\[.*\]/[]/};/endif/ b;p;n;b next}'
 
 	cat << EOF