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authorMichael Ossmann2012-05-22 10:59:27 -0600
committerMichael Ossmann2012-05-22 10:59:27 -0600
commit9439ce9d69afeb5e961cbc28ab581c3d4fc3fc60 (patch)
tree6ade4e72f0bf870494771dd0e1c573483d817fe4
parent3a3c306ee3f7fa8a151169984f2ab3450ecccd55 (diff)
new lib/lpc43xx, starting with copy of lpc17xx
-rw-r--r--lib/lpc43xx/Makefile58
-rw-r--r--lib/lpc43xx/gpio.c30
-rw-r--r--lib/lpc43xx/libopencm3_lpc17xx.ld73
-rw-r--r--lib/lpc43xx/vector.c94
4 files changed, 255 insertions, 0 deletions
diff --git a/lib/lpc43xx/Makefile b/lib/lpc43xx/Makefile
new file mode 100644
index 0000000..c29f690
--- /dev/null
+++ b/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)
+
diff --git a/lib/lpc43xx/gpio.c b/lib/lpc43xx/gpio.c
new file mode 100644
index 0000000..6c44081
--- /dev/null
+++ b/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;
+}
diff --git a/lib/lpc43xx/libopencm3_lpc17xx.ld b/lib/lpc43xx/libopencm3_lpc17xx.ld
new file mode 100644
index 0000000..30a2c0f
--- /dev/null
+++ b/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));
+
diff --git a/lib/lpc43xx/vector.c b/lib/lpc43xx/vector.c
new file mode 100644
index 0000000..016db7a
--- /dev/null
+++ b/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 */