git subrepo clone https://github.com/libopencm3/libopencm3

subrepo:
  subdir:   "libopencm3"
  merged:   "f5813a54"
upstream:
  origin:   "https://github.com/libopencm3/libopencm3"
  branch:   "master"
  commit:   "f5813a54"
git-subrepo:
  version:  "0.4.3"
  origin:   "???"
  commit:   "???"

libopencm3/lib/lpc43xx/m4/Makefile

@@ -0,0 +1,50 @@
+##
+## This file is part of the libopencm3 project.
+##
+## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+## Copyright (C) 2012 Michael Ossmann <mike@ossmann.com>
+## Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com>
+## Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+##
+## This library is free software: you can redistribute it and/or modify
+## it under the terms of the GNU Lesser General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU Lesser General Public License for more details.
+##
+## You should have received a copy of the GNU Lesser General Public License
+## along with this library.  If not, see <http://www.gnu.org/licenses/>.
+##
+
+LIBNAME		= libopencm3_lpc43xx
+SRCLIBDIR	?= ../..
+
+FP_FLAGS	?= -mfloat-abi=hard -mfpu=fpv4-sp-d16
+CC		= $(PREFIX)gcc
+AR		= $(PREFIX)ar
+TGT_CFLAGS	= -O2 \
+		  -Wall -Wextra -Wimplicit-function-declaration \
+		  -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
+		  -Wundef -Wshadow \
+		  -I../../../include -fno-common \
+		  -mcpu=cortex-m4 -mthumb -Wstrict-prototypes \
+		  -ffunction-sections -fdata-sections -MD \
+		  $(FP_FLAGS) -DLPC43XX -DLPC43XX_M4
+TGT_CFLAGS      += $(DEBUG_FLAGS)
+TGT_CFLAGS	+= $(STANDARD_FLAGS)
+
+ARFLAGS		= rcs
+
+# LPC43xx common files for M4 / M0
+OBJ_LPC43XX     = gpio.o scu.o i2c.o ssp.o uart.o timer.o
+
+#LPC43xx M4 specific file + Generic LPC43xx M4/M0 files
+OBJS		= $(OBJ_LPC43XX) ipc.o
+
+VPATH += ../:../../cm3
+
+include ../../Makefile.include

libopencm3/lib/lpc43xx/m4/vector_chipset.c

@@ -0,0 +1,48 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
+ * Copyright (C) 2012 Michael Ossmann <mike@ossmann.com>
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopencm3/cm3/common.h>
+
+extern unsigned _etext_ram, _text_ram, _etext_rom;
+
+#define CREG_M4MEMMAP   MMIO32((0x40043000U + 0x100))
+
+static void pre_main(void)
+{
+	volatile unsigned *src, *dest;
+
+	/* Copy the code from ROM to Real RAM (if enabled) */
+	if ((&_etext_ram-&_text_ram) > 0) {
+		src = &_etext_rom-(&_etext_ram-&_text_ram);
+		/* Change Shadow memory to ROM (for Debug Purpose in case Boot
+		 * has not set correctly the M4MEMMAP because of debug)
+		 */
+		CREG_M4MEMMAP = (unsigned long)src;
+
+		for (dest = &_text_ram; dest < &_etext_ram; ) {
+			*dest++ = *src++;
+		}
+
+		/* Change Shadow memory to Real RAM */
+		CREG_M4MEMMAP = (unsigned long)&_text_ram;
+
+		/* Continue Execution in RAM */
+	}
+}