Split sam3x/sam3n support.

Makefile

@@ -32,7 +32,7 @@ SHAREDIR	= $(DESTDIR)/$(PREFIX)/share/libopencm3/scripts
 INSTALL		= install
 
 SRCLIBDIR = $(shell pwd)/lib
-TARGETS = stm32/f1 stm32/f2 stm32/f4 stm32/l1 lpc13xx lpc17xx lpc43xx lm3s lm4f efm32/efm32tg efm32/efm32g efm32/efm32lg efm32/efm32gg sam3x
+TARGETS = stm32/f1 stm32/f2 stm32/f4 stm32/l1 lpc13xx lpc17xx lpc43xx lm3s lm4f efm32/efm32tg efm32/efm32g efm32/efm32lg efm32/efm32gg sam/3x sam/3n
 
 # Be silent per default, but 'make V=1' will show all compiler calls.
 ifneq ($(V),1)

include/libopencm3/dispatch/nvic.h

@@ -24,7 +24,9 @@
 #	include <libopencm3/lpc43xx/nvic.h>
 
 #elif defined(SAM3X)
-#	include <libopencm3/sam3x/nvic.h>
+#	include <libopencm3/sam/3x/nvic.h>
+#elif defined(SAM3N)
+#	include <libopencm3/sam/3n/nvic.h>
 
 #elif defined(LM3S) || defined(LM4F)
 /* Yes, we use the same interrupt table for both LM3S and LM4F */

include/libopencm3/sam/3n/irq.yaml

@@ -0,0 +1,36 @@
+includeguard: LIBOPENCM3_SAM3N_NVIC_H
+partname_humanreadable: Atmel SAM3N series
+partname_doxygen: SAM3N
+irqs:
+  - supc
+  - rstc
+  - rtc
+  - rtt
+  - wdg
+  - pmc
+  - eefc0
+  - reserved0
+  - uart0
+  - uart1
+  - reserved1
+  - pioa
+  - piob
+  - pioc
+  - usart0
+  - usart1
+  - reserved2
+  - reserved3
+  - reserved4
+  - twi0
+  - twi1
+  - spi
+  - reserved5
+  - tc0
+  - tc1
+  - tc2
+  - tc3
+  - tc4
+  - tc5
+  - adc
+  - dacc
+  - pwm

include/libopencm3/sam/3n/memorymap.h

@@ -0,0 +1,60 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2012 Gareth McMullin <gareth@blacksphere.co.nz>
+ *
+ * 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/>.
+ */
+
+#ifndef SAM3N_MEMORYMAP_H
+#define SAM3N_MEMORYMAP_H
+
+#include <libopencm3/cm3/common.h>
+
+/* --- SAM3N peripheral space -------------------------------------------- */
+
+#define SPI_BASE			(0x40008000)
+#define TC0_BASE			(0x40010000)
+#define TC1_BASE			(0x40010040)
+#define TC2_BASE			(0x40010080)
+#define TC3_BASE			(0x40014000)
+#define TC4_BASE			(0x40014040)
+#define TC5_BASE			(0x40014080)
+#define TWI0_BASE			(0x40018000)
+#define TWI1_BASE			(0x4001C000)
+#define PWM_BASE			(0x40020000)
+#define USART0_BASE			(0x40024000)
+#define USART1_BASE			(0x40028000)
+#define ADC_BASE			(0x40038000)
+#define DACC_BASE			(0x4003C000)
+
+/* --- SAM3N system controller space ------------------------------------- */
+#define SMC_BASE			(0x400E0000)
+#define MATRIX_BASE			(0x400E0200)
+#define PMC_BASE			(0x400E0400)
+#define UART0_BASE			(0x400E0600)
+#define CHIPID_BASE			(0x400E0740)
+#define UART1_BASE			(0x400E0800)
+#define EEFC_BASE			(0x400E0A00)
+#define PIOA_BASE			(0x400E0E00)
+#define PIOB_BASE			(0x400E1000)
+#define PIOC_BASE			(0x400E1200)
+#define RSTC_BASE			(0x400E1400)
+#define SUPC_BASE			(0x400E1410)
+#define RTT_BASE			(0x400E1430)
+#define WDT_BASE			(0x400E1450)
+#define RTC_BASE			(0x400E1460)
+#define GPBR_BASE			(0x400E1490)
+
+#endif

include/libopencm3/sam/eefc.h

@@ -21,9 +21,10 @@
 #define SAM3X_EEFC_H
 
 #include <libopencm3/cm3/common.h>
-#include <libopencm3/sam3x/memorymap.h>
+#include <libopencm3/sam/memorymap.h>
 
 /* --- Convenience macros ------------------------------------------------ */
+#define EEFC				EEFC_BASE
 #define EEFC0				EEFC0_BASE
 #define EEFC1				EEFC1_BASE
 
@@ -70,8 +71,12 @@
 
 static inline void eefc_set_latency(u8 wait)
 {
+#if defined(SAM3X)
 	EEFC_FMR(EEFC0) = (EEFC_FMR(EEFC0) & ~EEFC_FMR_FWS_MASK) | (wait << 8);
 	EEFC_FMR(EEFC1) = (EEFC_FMR(EEFC1) & ~EEFC_FMR_FWS_MASK) | (wait << 8);
+#elif defined(SAM3N)
+	EEFC_FMR(EEFC) = (EEFC_FMR(EEFC) & ~EEFC_FMR_FWS_MASK) | (wait << 8);
+#endif
 }
 
 #endif

include/libopencm3/sam/gpio.h

@@ -20,7 +20,7 @@
 #ifndef SAM3X_GPIO_H
 #define SAM3X_GPIO_H
 
-#include <libopencm3/sam3x/pio.h>
+#include <libopencm3/sam/pio.h>
 
 /* flags may be or'd together, but only contain one of
  * GPOUTPUT, PERIPHA and PERIPHB */

include/libopencm3/sam/memorymap.h

@@ -1,7 +1,7 @@
 /*
  * This file is part of the libopencm3 project.
  *
- * Copyright (C) 2012 Gareth McMullin <gareth@blacksphere.co.nz>
+ * Copyright (C) 2013 Gareth McMullin <gareth@blacksphere.co.nz>
  *
  * 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
@@ -17,12 +17,16 @@
  * along with this library.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <libopencm3/sam3x/pio.h>
+#ifndef SAM_MEMORYMAP_H
+#define SAM_MEMORYMAP_H
 
-void pio_toggle(u32 gpioport, u32 gpios)
+#if defined(SAM3X)
-{
+#	include <libopencm3/sam/3x/memorymap.h>
-	u32 odsr = PIO_ODSR(gpioport);
+#elif defined(SAM3N)
-	PIO_CODR(gpioport) = odsr & gpios;
+#	include <libopencm3/sam/3n/memorymap.h>
-	PIO_SODR(gpioport) = ~odsr & gpios;
+#else
-}
+#	error "Processor family not defined."
+#endif
+
+#endif
 

include/libopencm3/sam/pio.h

@@ -17,11 +17,11 @@
  * along with this library.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef SAM3X_PIO_H
+#ifndef SAM_PIO_H
-#define SAM3X_PIO_H
+#define SAM_PIO_H
 
 #include <libopencm3/cm3/common.h>
-#include <libopencm3/sam3x/memorymap.h>
+#include <libopencm3/sam/memorymap.h>
 
 /* --- Convenience macros ------------------------------------------------ */
 

include/libopencm3/sam/pmc.h

@@ -21,7 +21,7 @@
 #define SAM3X_PMC_H
 
 #include <libopencm3/cm3/common.h>
-#include <libopencm3/sam3x/memorymap.h>
+#include <libopencm3/sam/memorymap.h>
 
 /* --- Power Management Controller (PMC) registers ----------------------- */
 

include/libopencm3/sam/pwm.h

@@ -21,7 +21,7 @@
 #define SAM3X_PWM_H
 
 #include <libopencm3/cm3/common.h>
-#include <libopencm3/sam3x/memorymap.h>
+#include <libopencm3/sam/memorymap.h>
 
 /* --- Pulse Width Modulation (PWM) registers ----------------------- */
 
@@ -71,12 +71,20 @@
 /* 0x01B0:0x01FC - Reserved */
 #define PWM_CMR(x)			MMIO32(PWM_BASE + 0x0200 + 0x20*(x))
 #define PWM_CDTY(x)			MMIO32(PWM_BASE + 0x0204 + 0x20*(x))
-#define PWM_CDTYUPD(x)			MMIO32(PWM_BASE + 0x0208 + 0x20*(x))
+#if defined(SAM3X)
-#define PWM_CPRD(x)			MMIO32(PWM_BASE + 0x020C + 0x20*(x))
+#	define PWM_CDTYUPD(x)		MMIO32(PWM_BASE + 0x0208 + 0x20*(x))
-#define PWM_CPRDUPD(x)			MMIO32(PWM_BASE + 0x0210 + 0x20*(x))
+#	define PWM_CPRD(x)		MMIO32(PWM_BASE + 0x020C + 0x20*(x))
-#define PWM_CCNT(x)			MMIO32(PWM_BASE + 0x0214 + 0x20*(x))
+#	define PWM_CPRDUPD(x)		MMIO32(PWM_BASE + 0x0210 + 0x20*(x))
-#define PWM_DT(x)			MMIO32(PWM_BASE + 0x0218 + 0x20*(x))
+#	define PWM_CCNT(x)		MMIO32(PWM_BASE + 0x0214 + 0x20*(x))
-#define PWM_DTUPD(x)			MMIO32(PWM_BASE + 0x021C + 0x20*(x))
+#	define PWM_DT(x)		MMIO32(PWM_BASE + 0x0218 + 0x20*(x))
+#	define PWM_DTUPD(x)		MMIO32(PWM_BASE + 0x021C + 0x20*(x))
+#elif defined(SAM3N)
+#	define PWM_CPRD(x)		MMIO32(PWM_BASE + 0x0208 + 0x20*(x))
+#	define PWM_CCNT(x)		MMIO32(PWM_BASE + 0x020C + 0x20*(x))
+#	define PWM_CUPD(x)		MMIO32(PWM_BASE + 0x0210 + 0x20*(x))
+#else
+#	error "Processor family not defined."
+#endif
 
 static inline void pwm_set_period(int ch, u32 period)
 {

include/libopencm3/sam/tc.h

@@ -21,7 +21,7 @@
 #define SAM3X_TC_H
 
 #include <libopencm3/cm3/common.h>
-#include <libopencm3/sam3x/memorymap.h>
+#include <libopencm3/sam/memorymap.h>
 
 /* --- Timer Counter (TC) registers -------------------------------------- */
 

include/libopencm3/sam/uart.h

@@ -21,7 +21,7 @@
 #define SAM3X_UART_H
 
 #include <libopencm3/cm3/common.h>
-#include <libopencm3/sam3x/memorymap.h>
+#include <libopencm3/sam/memorymap.h>
 
 /* --- Universal Asynchronous Receiver Transmitter (UART) registers ------- */
 #define UART_CR				MMIO32(UART_BASE + 0x0000)

include/libopencm3/sam/usart.h

@@ -21,7 +21,7 @@
 #define SAM3X_USART_H
 
 #include <libopencm3/cm3/common.h>
-#include <libopencm3/sam3x/memorymap.h>
+#include <libopencm3/sam/memorymap.h>
 
 #define USART0		USART0_BASE
 #define USART1		USART1_BASE

include/libopencm3/sam/wdt.h

@@ -21,7 +21,7 @@
 #define SAM3X_WDT_H
 
 #include <libopencm3/cm3/common.h>
-#include <libopencm3/sam3x/memorymap.h>
+#include <libopencm3/sam/memorymap.h>
 
 
 /* --- WDT registers ----------------------------------------------------- */

lib/dispatch/vector_nvic.c

@@ -24,7 +24,9 @@
 #	include "../lpc43xx/vector_nvic.c"
 
 #elif defined(SAM3X)
-#	include "../sam3x/vector_nvic.c"
+#	include "../sam/3x/vector_nvic.c"
+#elif defined(SAM3N)
+#	include "../sam/3n/vector_nvic.c"
 
 #elif defined(LM3S) || defined(LM4F)
 /* Yes, we use the same interrupt table for both LM3S and LM4F */

lib/sam/3n/Makefile

@@ -0,0 +1,36 @@
+##
+## 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_sam3n
+
+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 -DSAM3N
+# ARFLAGS	= rcsv
+ARFLAGS		= rcs
+OBJS		= gpio.o pmc.o usart.o
+
+VPATH += ../../cm3:../common
+
+include ../../Makefile.include
+

lib/sam/3x/Makefile

@@ -23,14 +23,14 @@ PREFIX		?= arm-none-eabi
 #PREFIX		?= arm-elf
 CC		= $(PREFIX)-gcc
 AR		= $(PREFIX)-ar
-CFLAGS		= -Os -g -Wall -Wextra -I../../include -fno-common \
+CFLAGS		= -Os -g -Wall -Wextra -I../../../include -fno-common \
 		  -mcpu=cortex-m3 -mthumb -Wstrict-prototypes \
 		  -ffunction-sections -fdata-sections -MD -DSAM3X
 # ARFLAGS	= rcsv
 ARFLAGS		= rcs
 OBJS		= gpio.o pmc.o usart.o
 
-VPATH += ../usb:../cm3
+VPATH += ../../usb:../../cm3:../common
 
-include ../Makefile.include
+include ../../Makefile.include
 

lib/sam/3x/libopencm3_sam3x.ld

@@ -0,0 +1,106 @@
+/*
+ * 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 STM32 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
+{
+	.text : {
+		*(.vectors)	/* Vector table */
+		*(.text*)	/* Program code */
+		. = ALIGN(4);
+		*(.rodata*)	/* Read-only data */
+		. = ALIGN(4);
+	} >rom
+
+	/* C++ Static constructors/destructors, also used for __attribute__
+	 * ((constructor)) and the likes */
+	.preinit_array : {
+		. = ALIGN(4);
+		__preinit_array_start = .;
+		KEEP (*(.preinit_array))
+		__preinit_array_end = .;
+	} >rom
+	.init_array : {
+		. = ALIGN(4);
+		__init_array_start = .;
+		KEEP (*(SORT(.init_array.*)))
+		KEEP (*(.init_array))
+		__init_array_end = .;
+	} >rom
+	.fini_array : {
+		. = ALIGN(4);
+		__fini_array_start = .;
+		KEEP (*(.fini_array))
+		KEEP (*(SORT(.fini_array.*)))
+		__fini_array_end = .;
+	} >rom
+
+	/*
+	 * Another section used by C++ stuff, appears when using newlib with
+	 * 64bit (long long) printf support
+	 */
+	.ARM.extab : {
+		*(.ARM.extab*)
+	} >rom
+	.ARM.exidx : {
+		__exidx_start = .;
+		*(.ARM.exidx*)
+		__exidx_end = .;
+	} >rom
+
+	. = ALIGN(4);
+	_etext = .;
+
+	.data : {
+		_data = .;
+		*(.data*)	/* Read-write initialized data */
+		. = ALIGN(4);
+		_edata = .;
+	} >ram AT >rom
+	_data_loadaddr = LOADADDR(.data);
+
+	.bss : {
+		*(.bss*)	/* Read-write zero initialized data */
+		*(COMMON)
+		. = ALIGN(4);
+		_ebss = .;
+	} >ram
+
+	/*
+	 * 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) }
+
+	. = ALIGN(4);
+	end = .;
+}
+
+PROVIDE(_stack = ORIGIN(ram) + LENGTH(ram));
+

lib/sam/common/gpio.c

@@ -17,7 +17,7 @@
  * along with this library.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <libopencm3/sam3x/gpio.h>
+#include <libopencm3/sam/gpio.h>
 
 void gpio_init(u32 port, u32 pins, enum gpio_flags flags)
 {

lib/sam/common/pmc.c

@@ -17,8 +17,8 @@
  * along with this library.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <libopencm3/sam3x/pmc.h>
+#include <libopencm3/sam/pmc.h>
-#include <libopencm3/sam3x/eefc.h>
+#include <libopencm3/sam/eefc.h>
 
 /** Default peripheral clock frequency after reset. */
 u32 pmc_mck_frequency = 4000000;

lib/sam/common/usart.c

@@ -17,8 +17,8 @@
  * along with this library.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <libopencm3/sam3x/usart.h>
+#include <libopencm3/sam/usart.h>
-#include <libopencm3/sam3x/pmc.h>
+#include <libopencm3/sam/pmc.h>
 
 void usart_set_baudrate(u32 usart, u32 baud)
 {