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-rw-r--r--examples/efm32/tinygecko/Makefile.include96
-rw-r--r--examples/efm32/tinygecko/efm32-tg-stk3300/Makefile.include25
-rw-r--r--examples/efm32/tinygecko/efm32-tg-stk3300/README9
-rw-r--r--examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/Makefile23
-rw-r--r--examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/README9
-rw-r--r--examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/miniblink.c72
-rw-r--r--include/libopencm3/efm32/tinygecko/devicerevision.h26
-rw-r--r--include/libopencm3/efm32/tinygecko/vector.h11
-rw-r--r--include/libopencm3/efm32/vector.h34
-rw-r--r--lib/efm32/tinygecko/EFM32TG840F32.ld15
-rw-r--r--lib/efm32/tinygecko/Makefile59
-rw-r--r--lib/efm32/tinygecko/devicerevision.c10
-rw-r--r--lib/efm32/tinygecko/tinygecko.ld78
-rw-r--r--lib/efm32/tinygecko/vector.c92
14 files changed, 559 insertions, 0 deletions
diff --git a/examples/efm32/tinygecko/Makefile.include b/examples/efm32/tinygecko/Makefile.include
new file mode 100644
index 0000000..1ee8d49
--- /dev/null
+++ b/examples/efm32/tinygecko/Makefile.include
@@ -0,0 +1,96 @@
+##
+## This file is part of the libopencm3 project.
+##
+## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+## Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
+## Copyright (C) 2012 chrysn <chrysn@fsfe.org>
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This program 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 General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program. If not, see <http://www.gnu.org/licenses/>.
+##
+
+PREFIX ?= arm-none-eabi
+#PREFIX ?= arm-elf
+CC = $(PREFIX)-gcc
+LD = $(PREFIX)-gcc
+OBJCOPY = $(PREFIX)-objcopy
+OBJDUMP = $(PREFIX)-objdump
+GDB = $(PREFIX)-gdb
+# Uncomment this line if you want to use the installed (not local) library.
+#TOOLCHAIN_DIR := $(shell dirname `which $(CC)`)/../$(PREFIX)
+TOOLCHAIN_DIR = ../../../../..
+CFLAGS += -Os -g -Wall -Wextra -I$(TOOLCHAIN_DIR)/include \
+ -fno-common -mcpu=cortex-m3 -mthumb -msoft-float -MD -DSTM32F1
+LDSCRIPT ?= ${TOOLCHAIN_DIR}/lib/efm32/tinygecko/$(MCU).ld
+LDFLAGS += -lc -lnosys -L$(TOOLCHAIN_DIR)/lib/efm32/tinygecko \
+ -T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections \
+ -mthumb -march=armv7 -mfix-cortex-m3-ldrd -msoft-float
+OBJS += $(BINARY).o
+
+# Be silent per default, but 'make V=1' will show all compiler calls.
+ifneq ($(V),1)
+Q := @
+NULL := 2>/dev/null
+else
+LDFLAGS += -Wl,--print-gc-sections
+endif
+
+.SUFFIXES: .elf .bin .hex .srec .list .images
+.SECONDEXPANSION:
+.SECONDARY:
+
+all: images
+
+images: $(BINARY).images
+flash: $(BINARY).flash
+
+%.images: %.bin %.hex %.srec %.list
+ @#echo "*** $* images generated ***"
+
+%.bin: %.elf
+ @#printf " OBJCOPY $(*).bin\n"
+ $(Q)$(OBJCOPY) -Obinary $(*).elf $(*).bin
+
+%.hex: %.elf
+ @#printf " OBJCOPY $(*).hex\n"
+ $(Q)$(OBJCOPY) -Oihex $(*).elf $(*).hex
+
+%.srec: %.elf
+ @#printf " OBJCOPY $(*).srec\n"
+ $(Q)$(OBJCOPY) -Osrec $(*).elf $(*).srec
+
+%.list: %.elf
+ @#printf " OBJDUMP $(*).list\n"
+ $(Q)$(OBJDUMP) -S $(*).elf > $(*).list
+
+%.elf: $(OBJS) $(LDSCRIPT) $(TOOLCHAIN_DIR)/lib/efm32/tinygecko/libopencm3_efm32tinygecko.a
+ @#printf " LD $(subst $(shell pwd)/,,$(@))\n"
+ $(Q)$(LD) -o $(*).elf $(OBJS) -lopencm3_efm32tinygecko $(LDFLAGS)
+
+%.o: %.c Makefile
+ @#printf " CC $(subst $(shell pwd)/,,$(@))\n"
+ $(Q)$(CC) $(CFLAGS) -o $@ -c $<
+
+clean:
+ $(Q)rm -f *.o
+ $(Q)rm -f *.d
+ $(Q)rm -f *.elf
+ $(Q)rm -f *.bin
+ $(Q)rm -f *.hex
+ $(Q)rm -f *.srec
+ $(Q)rm -f *.list
+
+.PHONY: images clean
+
+-include $(OBJS:.o=.d)
+
diff --git a/examples/efm32/tinygecko/efm32-tg-stk3300/Makefile.include b/examples/efm32/tinygecko/efm32-tg-stk3300/Makefile.include
new file mode 100644
index 0000000..e707b65
--- /dev/null
+++ b/examples/efm32/tinygecko/efm32-tg-stk3300/Makefile.include
@@ -0,0 +1,25 @@
+##
+## This file is part of the libopencm3 project.
+##
+## Copyright (C) 2012 chrysn <chrysn@fsfe.org>
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This program 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 General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program. If not, see <http://www.gnu.org/licenses/>.
+##
+
+MCU = EFM32TG840F32
+
+# Linker scripts are always relative to the current directory. This file is
+# intended for inclusion from example subdirectories, so the Makefile.include
+# meant here would be called ../Makefile.include relative to here.
+include ../../Makefile.include
diff --git a/examples/efm32/tinygecko/efm32-tg-stk3300/README b/examples/efm32/tinygecko/efm32-tg-stk3300/README
new file mode 100644
index 0000000..ffa3b59
--- /dev/null
+++ b/examples/efm32/tinygecko/efm32-tg-stk3300/README
@@ -0,0 +1,9 @@
+=========================
+EFM32-TG-STK3300 Examples
+=========================
+
+Examples in this directory are designed to be run on the Energy Micro EFM32
+Tiny Gecko Starter Kit, which is based on the EFM32TG840F32 MCU, has an onboard
+USB debug and power management interface, and a bunch of peripherials built in
+that demonstrate the chip's low power capabilities (LED, LCD display, light
+sensor, touch slider, LC sensor, push buttons).
diff --git a/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/Makefile b/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/Makefile
new file mode 100644
index 0000000..a2e44dc
--- /dev/null
+++ b/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/Makefile
@@ -0,0 +1,23 @@
+##
+## This file is part of the libopencm3 project.
+##
+## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+## 2012 chrysn <chrysn@fsfe.org>
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This program 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 General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program. If not, see <http://www.gnu.org/licenses/>.
+##
+
+BINARY = miniblink
+
+include ../Makefile.include
diff --git a/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/README b/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/README
new file mode 100644
index 0000000..d19e4fe
--- /dev/null
+++ b/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/README
@@ -0,0 +1,9 @@
+==========================================
+EFM32-TG-STK3300 Examples miniblink README
+==========================================
+
+This is the smallest-possible example program using libopencm3.
+
+It's intended for the EFM32-TG-STK3300 eval board. It should blink
+the user LED on the board.
+
diff --git a/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/miniblink.c b/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/miniblink.c
new file mode 100644
index 0000000..e19ba8f
--- /dev/null
+++ b/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/miniblink.c
@@ -0,0 +1,72 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ * 2012 chrysn <chrysn@fsfe.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+//#include <libopencm3/efm32/tinygecko/gpio.h>
+//
+//void gpio_setup(void)
+//{
+// /* Enable GPIOC clock. */
+// /* Manually: */
+// // RCC_APB2ENR |= RCC_APB2ENR_IOPCEN;
+// /* Using API functions: */
+// rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
+//
+// /* Set GPIO8 (in GPIO port C) to 'output push-pull'. */
+// /* Manually: */
+// // GPIOC_CRH = (GPIO_CNF_OUTPUT_PUSHPULL << (((8 - 8) * 4) + 2));
+// // GPIOC_CRH |= (GPIO_MODE_OUTPUT_2_MHZ << ((8 - 8) * 4));
+// /* Using API functions: */
+// gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
+// GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
+//}
+
+int main(void)
+{
+// int i;
+//
+// gpio_setup();
+//
+// /* Blink the LED (PC8) on the board. */
+// while (1) {
+// /* Manually: */
+// // GPIOC_BSRR = GPIO8; /* LED off */
+// // for (i = 0; i < 800000; i++) /* Wait a bit. */
+// // __asm__("nop");
+// // GPIOC_BRR = GPIO8; /* LED on */
+// // for (i = 0; i < 800000; i++) /* Wait a bit. */
+// // __asm__("nop");
+//
+// /* Using API functions gpio_set()/gpio_clear(): */
+// // gpio_set(GPIOC, GPIO8); /* LED off */
+// // for (i = 0; i < 800000; i++) /* Wait a bit. */
+// // __asm__("nop");
+// // gpio_clear(GPIOC, GPIO8); /* LED on */
+// // for (i = 0; i < 800000; i++) /* Wait a bit. */
+// // __asm__("nop");
+//
+// /* Using API function gpio_toggle(): */
+// gpio_toggle(GPIOC, GPIO8); /* LED on/off */
+// for (i = 0; i < 800000; i++) /* Wait a bit. */
+// __asm__("nop");
+// }
+//
+// return 0;
+ for(;;);
+}
diff --git a/include/libopencm3/efm32/tinygecko/devicerevision.h b/include/libopencm3/efm32/tinygecko/devicerevision.h
new file mode 100644
index 0000000..83e0e0d
--- /dev/null
+++ b/include/libopencm3/efm32/tinygecko/devicerevision.h
@@ -0,0 +1,26 @@
+/* this implements d0034_efm32tg_reference_manual.pdf's 7.3.4 "Device Revision"
+ * section */
+
+#ifndef LIBOPENCM3_EFM32_TINYGECKO_DEVICEREVISION_H
+#define LIBOPENCM3_EFM32_TINYGECKO_DEVICEREVISION_H
+
+#include <libopencm3/cm3/common.h>
+
+#define DEVICEREVISION_PID2 MMIO32(0xE00FFFE8)
+#define DEVICEREVISION_PID3 MMIO32(0xE00FFFEC)
+
+/* devicerevision_revision_get has a comment that would make these definitions
+ * obsolete; i'm not sure how far it is reasonable to parameterize everythin
+ * g*/
+#define DEVICEREVISION_REVISION_LENGTH 4
+#define DEVICEREVISION_REVISION_SHIFT 4
+#define DEVICEREVISION_REVISION_MASK (~(~0<<DEVICEREVISION_REVISION_LENGTH)<<DEVICEREVISION_REVISION_SHIFT) /* 0x000000f0, bits 7:4 */
+
+#define DEVICEREVISION_REVISION_A 0x00
+
+/* Read the device's hardcoded Revision. Return values can be compared against
+ * the DEVICEREVISION_REVISION_A constant, the only value given in the current
+ * specification. */
+extern u8 devicerevision_revision_get(void);
+
+#endif
diff --git a/include/libopencm3/efm32/tinygecko/vector.h b/include/libopencm3/efm32/tinygecko/vector.h
new file mode 100644
index 0000000..c609da3
--- /dev/null
+++ b/include/libopencm3/efm32/tinygecko/vector.h
@@ -0,0 +1,11 @@
+/* this implements d0002_efm32_cortex-m3_reference_manual.pdf's table 1.1's "number of interrupts" line. */
+
+
+#ifndef LIBOPENCM3_EFM32_TINYGECKO_VECTOR_H
+#define LIBOPENCM3_EFM32_TINYGECKO_VECTOR_H
+
+#define EFM32_VECTOR_NIRQ 23
+
+#include "../vector.h"
+
+#endif
diff --git a/include/libopencm3/efm32/vector.h b/include/libopencm3/efm32/vector.h
new file mode 100644
index 0000000..96ca301
--- /dev/null
+++ b/include/libopencm3/efm32/vector.h
@@ -0,0 +1,34 @@
+/* this implements d0002_efm32_cortex-m3_reference_manual.pdf's figure 2.2.
+ *
+ * the structure of the vector table is implemented independently of the vector
+ * table, as it can be relocated to other memory locations too.
+ *
+ * don't include this file directly; rather, include the family's vector.h
+ * file, which defines the number of interrupts (EFM_VECTOR_NIRQ) from table
+ * 1.1 */
+
+#ifndef LIBOPENCM3_EFM32_VECTOR_H
+#define LIBOPENCM3_EFM32_VECTOR_H
+
+#include <libopencm3/cm3/common.h>
+
+typedef void (*efm32_vector_table_entry_t)(void);
+
+typedef struct {
+ unsigned int *initial_sp_value;
+ efm32_vector_table_entry_t reset;
+ efm32_vector_table_entry_t nmi;
+ efm32_vector_table_entry_t hard_fault;
+ efm32_vector_table_entry_t memory_manage_fault;
+ efm32_vector_table_entry_t bus_fault;
+ efm32_vector_table_entry_t usage_fault;
+ efm32_vector_table_entry_t reserved_x001c[4];
+ efm32_vector_table_entry_t sv_call;
+ efm32_vector_table_entry_t reserved_debug;
+ efm32_vector_table_entry_t reserved_x0034;
+ efm32_vector_table_entry_t pend_sv;
+ efm32_vector_table_entry_t systick;
+ efm32_vector_table_entry_t irq[EFM32_VECTOR_NIRQ];
+} efm32_vector_table_t;
+
+#endif
diff --git a/lib/efm32/tinygecko/EFM32TG840F32.ld b/lib/efm32/tinygecko/EFM32TG840F32.ld
new file mode 100644
index 0000000..f7baa90
--- /dev/null
+++ b/lib/efm32/tinygecko/EFM32TG840F32.ld
@@ -0,0 +1,15 @@
+/* lengths from d011_efm32tg840_datasheet.pdf table 1.1, offset from
+ * d0034_efm32tg_reference_manual.pdf figure 5.2.
+ *
+ * the origins and memory structure are constant over all tinygeckos, but the
+ * MEMORY section requires the use of constants, and has thus to be duplicated
+ * over the chip variants.
+ * */
+
+MEMORY
+{
+ rom (rx) : ORIGIN = 0, LENGTH = 32k
+ ram (rwx) : ORIGIN = 0x20000000, LENGTH = 4k
+}
+
+INCLUDE tinygecko.ld;
diff --git a/lib/efm32/tinygecko/Makefile b/lib/efm32/tinygecko/Makefile
new file mode 100644
index 0000000..b785d4d
--- /dev/null
+++ b/lib/efm32/tinygecko/Makefile
@@ -0,0 +1,59 @@
+##
+## This file is part of the libopencm3 project.
+##
+## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+## Copyright (C) 2012 chrysn <chrysn@fsfe.org>
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This program 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 General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program. If not, see <http://www.gnu.org/licenses/>.
+##
+
+LIBNAME = libopencm3_efm32tinygecko
+
+PREFIX ?= arm-none-eabi
+#PREFIX ?= arm-elf
+CC = $(PREFIX)-gcc
+AR = $(PREFIX)-ar
+CFLAGS = -Os -g -Wall -Wextra -I../../../include -fno-common \
+ -mcpu=cortex-m3 -mthumb -Wstrict-prototypes \
+ -ffunction-sections -fdata-sections -MD -DSTM32F1
+# ARFLAGS = rcsv
+ARFLAGS = rcs
+OBJS = vector.o devicerevision.o
+
+VPATH += ../
+
+# Be silent per default, but 'make V=1' will show all compiler calls.
+ifneq ($(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/efm32/tinygecko\n"
+ $(Q)rm -f *.o *.d
+ $(Q)rm -f $(LIBNAME).a
+
+.PHONY: clean
+
+-include $(OBJS:.o=.d)
+
diff --git a/lib/efm32/tinygecko/devicerevision.c b/lib/efm32/tinygecko/devicerevision.c
new file mode 100644
index 0000000..216ab1b
--- /dev/null
+++ b/lib/efm32/tinygecko/devicerevision.c
@@ -0,0 +1,10 @@
+#include <libopencm3/efm32/tinygecko/devicerevision.h>
+
+u8 devicerevision_revision_get(void)
+{
+ /* probably this is more elegant, more readable and closer to the spec,
+ * and i'll just get used to doing things like that:
+ return (DEVICEREVISION_PID2 & 0xf0) | ((DEVICEREVISION_PID3 & 0xf0) >> 4);
+ */
+ return ((DEVICEREVISION_PID2 & DEVICEREVISION_REVISION_MASK) >> DEVICEREVISION_REVISION_SHIFT << DEVICEREVISION_REVISION_LENGTH) | ((DEVICEREVISION_PID3 & DEVICEREVISION_REVISION_MASK) >> DEVICEREVISION_REVISION_SHIFT);
+}
diff --git a/lib/efm32/tinygecko/tinygecko.ld b/lib/efm32/tinygecko/tinygecko.ld
new file mode 100644
index 0000000..db3b81f
--- /dev/null
+++ b/lib/efm32/tinygecko/tinygecko.ld
@@ -0,0 +1,78 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>,
+ * 2012 chrysn <chrysn@fsfe.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Generic linker script for EFM32 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 */
+ . = ALIGN(4);
+ *(.rodata*) /* Read-only data */
+ . = ALIGN(4);
+ _etext = .;
+ } >rom
+
+ . = ORIGIN(ram);
+
+ .data : AT(_etext) {
+ _data = .;
+ *(.data*) /* Read-write initialized data */
+ . = ALIGN(4);
+ _edata = .;
+ } >ram
+
+ .bss : {
+ *(.bss*) /* Read-write zero initialized data */
+ *(COMMON)
+ . = ALIGN(4);
+ _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) }
+
+ . = ALIGN(4);
+ end = .;
+}
+
+PROVIDE(_stack = ORIGIN(ram) + LENGTH(ram));
+
diff --git a/lib/efm32/tinygecko/vector.c b/lib/efm32/tinygecko/vector.c
new file mode 100644
index 0000000..0a7c09f
--- /dev/null
+++ b/lib/efm32/tinygecko/vector.c
@@ -0,0 +1,92 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>,
+ * 2012 chrysn <chrysn@fsfe.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopencm3/efm32/tinygecko/vector.h>
+
+#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);
+
+
+__attribute__ ((section(".vectors")))
+efm32_vector_table_t vector_table = {
+ .initial_sp_value = &_stack,
+ .reset = reset_handler,
+ .nmi = nmi_handler,
+ .hard_fault = hard_fault_handler,
+ .memory_manage_fault = mem_manage_handler,
+ .bus_fault = bus_fault_handler,
+ .usage_fault = usage_fault_handler,
+ .sv_call = sv_call_handler,
+ .pend_sv = pend_sv_handler,
+ .systick = sys_tick_handler,
+};
+
+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