armv7m: Integrate build of checksum code

Add rules to build armv7m_crc.inc and include it via preprocessor.

Change-Id: I4482c7acb8454de28bdf210d9f06c0720ada490a
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-on: http://openocd.zylin.com/3474
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>

contrib/loaders/checksum/Makefile

@@ -0,0 +1,19 @@
+BIN2C = ../../../src/helper/bin2char.sh
+
+ARM_CROSS_COMPILE ?= arm-none-eabi-
+ARM_AS      ?= $(ARM_CROSS_COMPILE)as
+ARM_OBJCOPY ?= $(ARM_CROSS_COMPILE)objcopy
+
+arm: armv7m_crc.inc
+
+armv7m_%.elf: armv7m_%.s
+	$(ARM_AS) $< -o $@
+
+armv7m_%.bin: armv7m_%.elf
+	$(ARM_OBJCOPY) -Obinary $< $@
+
+armv7m_%.inc: armv7m_%.bin
+	$(BIN2C) < $< > $@
+
+clean:
+	-rm -f *.elf *.bin *.inc

contrib/loaders/checksum/armv7m_crc.inc

@@ -0,0 +1,5 @@
+/* Autogenerated with ../../../src/helper/bin2char.sh */
+0x02,0x46,0x00,0x20,0xc0,0x43,0x0a,0x4e,0x0b,0x46,0x00,0x24,0x0d,0xe0,0x11,0x5d,
+0x09,0x06,0x48,0x40,0x00,0x25,0x00,0x28,0x02,0xda,0x40,0x00,0x70,0x40,0x00,0xe0,
+0x40,0x00,0x01,0x35,0x08,0x2d,0xf6,0xd1,0x01,0x34,0x9c,0x42,0xef,0xd1,0x00,0xbe,
+0xb7,0x1d,0xc1,0x04,