new lib/lpc43xx, starting with copy of lpc17xx

lib/lpc43xx/Makefile

@@ -0,0 +1,58 @@
+##
+## This file is part of the libopencm3 project.
+##
+## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## 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_lpc17xx
+
+PREFIX		?= arm-none-eabi
+#PREFIX		?= arm-elf
+CC		= $(PREFIX)-gcc
+AR		= $(PREFIX)-ar
+CFLAGS		= -O0 -g -Wall -Wextra -I../../include -fno-common \
+		  -mcpu=cortex-m3 -mthumb -Wstrict-prototypes \
+		  -ffunction-sections -fdata-sections -MD
+# ARFLAGS	= rcsv
+ARFLAGS		= rcs
+OBJS		= gpio.o vector.o
+
+# VPATH += ../usb
+
+# Be silent per default, but 'make V=1' will show all compiler calls.
+ifneq ($(V),1)
+Q := @
+endif
+
+all: $(LIBNAME).a
+
+$(LIBNAME).a: $(OBJS)
+	@printf "  AR      $(subst $(shell pwd)/,,$(@))\n"
+	$(Q)$(AR) $(ARFLAGS) $@ $^
+
+%.o: %.c
+	@printf "  CC      $(subst $(shell pwd)/,,$(@))\n"
+	$(Q)$(CC) $(CFLAGS) -o $@ -c $<
+
+clean:
+	@printf "  CLEAN   lib/lpc17xx\n"
+	$(Q)rm -f *.o *.d
+	$(Q)rm -f $(LIBNAME).a
+
+.PHONY: clean
+
+-include $(OBJS:.o=.d)
+

lib/lpc43xx/gpio.c

@@ -0,0 +1,30 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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/lpc17xx/gpio.h>
+
+void gpio_set(u32 gpioport, u32 gpios)
+{
+	GPIO_SET(gpioport) = gpios;
+}
+
+void gpio_clear(u32 gpioport, u32 gpios)
+{
+        GPIO_CLR(gpioport) = gpios;
+}

lib/lpc43xx/libopencm3_lpc17xx.ld

@@ -0,0 +1,73 @@
+
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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 LPC13XX 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(rom);
+
+	.text : {
+		*(.vectors)	/* Vector table */
+		*(.text*)	/* Program code */
+		*(.rodata*)	/* Read-only data */
+		_etext = .;
+	} >rom
+
+	. = ORIGIN(ram);
+
+	.data : {
+		_data = .;
+		*(.data*)	/* Read-write initialized data */
+		_edata = .;
+	} >ram AT >rom
+
+	.bss : {
+		*(.bss*)	/* Read-write zero initialized data */
+		*(COMMON)
+		_ebss = .;
+	} >ram AT >rom
+
+	/*
+	 * 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 = .;
+}
+
+PROVIDE(_stack = ORIGIN(ram) + LENGTH(ram));
+

lib/lpc43xx/vector.c

@@ -0,0 +1,94 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
+ *
+ * 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/>.
+ */
+
+#define WEAK __attribute__ ((weak))
+
+/* Symbols exported by the linker script(s). */
+extern unsigned _etext, _data, _edata, _ebss, _stack;
+
+void main(void);
+void reset_handler(void);
+void blocking_handler(void);
+void null_handler(void);
+
+void WEAK nmi_handler(void);
+void WEAK hard_fault_handler(void);
+void WEAK mem_manage_handler(void);
+void WEAK bus_fault_handler(void);
+void WEAK usage_fault_handler(void);
+void WEAK sv_call_handler(void);
+void WEAK debug_monitor_handler(void);
+void WEAK pend_sv_handler(void);
+void WEAK sys_tick_handler(void);
+
+/* TODO: Interrupt handler prototypes */
+
+__attribute__ ((section(".vectors")))
+void (*const vector_table[]) (void) = {
+	(void*)&_stack,		/* Addr: 0x0000_0000 */
+	reset_handler,		/* Addr: 0x0000_0004 */
+	nmi_handler,		/* Addr: 0x0000_0008 */
+	hard_fault_handler,	/* Addr: 0x0000_000C */
+	mem_manage_handler,	/* Addr: 0x0000_0010 */
+	bus_fault_handler,	/* Addr: 0x0000_0014 */
+	usage_fault_handler,	/* Addr: 0x0000_0018 */
+	0, 0, 0, 0,		/* Reserved Addr: 0x0000_001C - 0x0000_002B */
+	sv_call_handler,	/* Addr: 0x0000_002C */
+	debug_monitor_handler,	/* Addr: 0x0000_0030 */
+	0,			/* Reserved Addr: 0x0000_00034 */
+	pend_sv_handler,	/* Addr: 0x0000_0038 */
+	sys_tick_handler,	/* Addr: 0x0000_003C */
+};
+
+
+void reset_handler(void)
+{
+	volatile unsigned *src, *dest;
+	__asm__("MSR msp, %0" : : "r"(&_stack));
+
+	for (src = &_etext, dest = &_data; dest < &_edata; src++, dest++)
+		*dest = *src;
+
+	while (dest < &_ebss)
+		*dest++ = 0;
+
+	/* Call the application's entry point. */
+	main();
+}
+
+void blocking_handler(void)
+{
+	while (1) ;
+}
+
+void null_handler(void)
+{
+	/* Do nothing. */
+}
+
+#pragma weak nmi_handler = null_handler
+#pragma weak hard_fault_handler = blocking_handler
+#pragma weak mem_manage_handler = blocking_handler
+#pragma weak bus_fault_handler = blocking_handler
+#pragma weak usage_fault_handler = blocking_handler
+#pragma weak sv_call_handler = null_handler
+#pragma weak debug_monitor_handler = null_handler
+#pragma weak pend_sv_handler = null_handler
+#pragma weak sys_tick_handler = null_handler
+/* TODO: Interrupt handler weak aliases */