Move lpc43xx and lpc43xx_m0 code to lpc43xx/ hierarchy

Previously there were nasty dependency issues causing M4 objects to be
linked into the M0 library

lib/lpc43xx/m0/Makefile

@@ -0,0 +1,42 @@
+##
+## 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) 2012/2013 Benjamin Vernoux <titanmkd@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_m0
+
+PREFIX		?= arm-none-eabi
+#PREFIX		?= arm-elf
+CC		= $(PREFIX)-gcc
+AR		= $(PREFIX)-ar
+CFLAGS		= -O2 -g3 -Wall -Wextra -I../../../include -fno-common \
+		  -mcpu=cortex-m0 -mthumb -Wstrict-prototypes \
+		  -ffunction-sections -fdata-sections -MD
+# ARFLAGS	= rcsv
+ARFLAGS		= rcs
+
+# LPC43xx common files for M4 / M0
+OBJ_LPC43XX     = gpio.o scu.o i2c.o ssp.o uart.o
+
+#LPC43xx M0 specific file + Generic LPC43xx M4/M0 files
+OBJS		= $(OBJ_LPC43XX)
+
+VPATH += ../:../../cm3
+
+include ../../Makefile.include

lib/lpc43xx/m0/libopencm3_lpc43xx_ram_only_m0.ld

@@ -0,0 +1,96 @@
+/*
+ * 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) 2012 Jared Boone <jared@sharebrained.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/>.
+ */
+
+/* Generic linker script for LPC43XX targets using libopencm3. */
+
+/* Memory regions must be defined in the ld script which includes this one. */
+
+/* Enforce emmition of the vector table. */
+EXTERN (vector_table)
+
+/* Define the entry point of the output file. */
+ENTRY(reset_handler)
+
+/* Define sections. */
+SECTIONS
+{
+	. = ORIGIN(ram_ahb2);
+
+	.text : {
+		. = ALIGN(0x400);
+		*(.vectors)	/* Vector table */
+		*(.text*)	/* Program code */
+		. = ALIGN(4);
+		*(.rodata*)	/* Read-only data */
+		. = ALIGN(4);
+	} >ram_ahb2
+
+	/* exception index - required due to libgcc.a issuing /0 exceptions */
+	__exidx_start = .;
+	.ARM.exidx : {
+		*(.ARM.exidx*)
+	} > ram_ahb2
+	__exidx_end = .;
+
+	_etext = .;
+
+	. = ORIGIN(ram_ahb2);
+	
+	.data : {
+		*(.data*)	/* Read-write initialized data */
+		. = ALIGN(4);
+	} >ram_ahb2
+
+	_data = .;
+	_edata = .;
+
+	.bss : {
+	   _bss = .;
+		*(.bss*)	/* Read-write zero initialized data */
+		*(COMMON)
+		. = ALIGN(4);
+	   _ebss = .;
+	} >ram_ahb2
+
+	/* exception unwind data - required due to libgcc.a issuing /0 exceptions */
+	.ARM.extab : {
+		*(.ARM.extab*)
+	} >ram_ahb2
+
+	/*
+	 * The .eh_frame section appears to be used for C++ exception handling.
+	 * You may need to fix this if you're using C++.
+	 */
+	/DISCARD/ : { *(.eh_frame) }
+
+	/*
+	 * Another section used by C++ stuff, appears when using newlib with
+	 * 64bit (long long) printf support - discard it for now.
+	 */
+	/DISCARD/ : { *(.ARM.exidx) }
+
+	end = .;
+
+	/* Leave room above stack for IAP to run. */
+	__StackTop = ORIGIN(ram_ahb2) + LENGTH(ram_ahb2) - 32;
+	PROVIDE(_stack = __StackTop);
+}

lib/lpc43xx/m4/Makefile

@@ -29,14 +29,19 @@ CFLAGS		= -O2 -g3 \
 		  -Wall -Wextra -Wimplicit-function-declaration \
 		  -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
 		  -Wundef -Wshadow \
-		  -I../../include -fno-common \
+		  -I../../../include -fno-common \
 		  -mcpu=cortex-m4 -mthumb -Wstrict-prototypes \
 		  -ffunction-sections -fdata-sections -MD \
 		  -mfloat-abi=hard -mfpu=fpv4-sp-d16 -DLPC43XX
 # ARFLAGS	= rcsv
 ARFLAGS		= rcs
-OBJS		= gpio.o vector.o scu.o i2c.o ssp.o nvic.o systick.o uart.o ipc.o
 
-VPATH += ../cm3
+# LPC43xx common files for M4 / M0
+OBJ_LPC43XX     = gpio.o scu.o i2c.o ssp.o uart.o
 
-include ../Makefile.include
+#LPC43xx M4 specific file + Generic LPC43xx M4/M0 files
+OBJS		= $(OBJ_LPC43XX) ipc.o
+
+VPATH += ../:../../cm3
+
+include ../../Makefile.include