[target][lm3s6965evb] add support for stellaris based lm3s6965evb board

This seems to be somewhat properly emulated in qemu.

qemu-system-arm -machine lm3s6965evb -cpu cortex-m3

platform/stellaris/debug.c

@@ -79,10 +79,12 @@ void stellaris_debug_early_init(void)
     STATIC_ASSERT(DEBUG_UART == UART0_BASE);
 
     if (DEBUG_UART == UART0_BASE) {
+#if defined(PART_LM4F120H5QR)
         /* Set GPIO A0 and A1 as UART pins. */
         GPIOPinConfigure(GPIO_PA0_U0RX);
         GPIOPinConfigure(GPIO_PA1_U0TX);
         GPIOPinTypeUART(GPIO_PORTA_AHB_BASE, GPIO_PIN_0 | GPIO_PIN_1);
+#endif
     }
 
     UARTConfigSetExpClk(DEBUG_UART, SysCtlClockGet(), 115200, UART_CONFIG_WLEN_8|UART_CONFIG_STOP_ONE|UART_CONFIG_PAR_NONE);

platform/stellaris/init.c

@@ -53,7 +53,17 @@ void platform_early_init(void)
     //
     // Set the clocking to run directly from the crystal.
     //
-    SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_XTAL_16MHZ | SYSCTL_OSC_MAIN);
+
+    ulong config = SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN;
+#if !defined(CRYSTAL_FREQ) || CRYSTAL_FREQ == 16000000
+    config |= SYSCTL_XTAL_16MHZ;
+#elif CRYSTAL_FREQ == 8000000
+    config |= SYSCTL_XTAL_8MHZ;
+#else
+#error add more cases for additional frequencies
+#endif
+
+    SysCtlClockSet(config);
 
     // start the generic systick timer
     arm_cm_systick_init(SysCtlClockGet());

platform/stellaris/rules.mk

@@ -11,9 +11,15 @@ MEMSIZE ?= 32768
 MEMBASE := 0x20000000
 ROMBASE := 0x00000000
 ARM_CPU := cortex-m3
-# should this be here?
 GLOBAL_DEFINES += TARGET_IS_BLIZZARD_RA1
 endif
+ifeq ($(STELLARIS_CHIP),LM3S6965)
+MEMSIZE ?= 65536
+MEMBASE := 0x20000000
+ROMBASE := 0x00000000
+ARM_CPU := cortex-m3
+GLOBAL_DEFINES += TARGET_IS_FURY_RA2
+endif
 
 GLOBAL_DEFINES += PART_$(STELLARIS_CHIP)
 
@@ -28,17 +34,6 @@ MODULE_SRCS += \
 	$(LOCAL_DIR)/usbc.c \
 	$(LOCAL_DIR)/vectab.c \
 
-
-#	$(LOCAL_DIR)/debug.c \
-	$(LOCAL_DIR)/interrupts.c \
-	$(LOCAL_DIR)/platform_early.c \
-	$(LOCAL_DIR)/platform.c \
-	$(LOCAL_DIR)/timer.c \
-	$(LOCAL_DIR)/init_clock.c \
-	$(LOCAL_DIR)/init_clock_48mhz.c \
-	$(LOCAL_DIR)/mux.c \
-	$(LOCAL_DIR)/emac_dev.c
-
 # use a two segment memory layout, where all of the read-only sections 
 # of the binary reside in rom, and the read/write are in memory. The 
 # ROMBASE, MEMBASE, and MEMSIZE make variables are required to be set 

project/lm3s6965evb-test.mk

@@ -0,0 +1,4 @@
+MODULES += \
+
+include project/virtual/test.mk
+include project/target/lm3s6965evb.mk

project/stellaris-launchpad-test.mk

@@ -1,6 +1,4 @@
 MODULES += \
-	app/shell \
-	app/tests \
-	lib/debugcommands
 
-include project/stellaris-launchpad.mk
+include project/virtual/test.mk
+include project/target/stellaris-launchpad.mk

project/target/lm3s6965evb.mk

@@ -0,0 +1 @@
+TARGET := lm3s6965evb

scripts/do-qemuarm

@@ -8,6 +8,7 @@ function HELP {
     echo "-n a virtio network device"
     echo "-t a virtio tap network device"
     echo "-d a virtio display"
+    echo "-3 cortex-m3 based platform"
     echo "-6 64bit arm"
     echo "-m <memory in MB>"
     echo "-s <number of cpus>"
@@ -20,6 +21,7 @@ DO_NET=0
 DO_NET_TAP=0
 DO_BLOCK=0
 DO_64BIT=0
+DO_CORTEX_M3=0
 DO_DISPLAY=0
 DO_CMPCTMALLOC=0
 DO_MINIHEAP=0
@@ -27,7 +29,7 @@ SMP=1
 MEMSIZE=512
 SUDO=""
 
-while getopts bdhm:cMnt6s: FLAG; do
+while getopts bdhm:cMnt36s: FLAG; do
     case $FLAG in
         b) DO_BLOCK=1;;
         c) DO_CMPCTMALLOC=1;;
@@ -35,6 +37,7 @@ while getopts bdhm:cMnt6s: FLAG; do
         M) DO_MINIHEAP=1;;
         n) DO_NET=1;;
         t) DO_NET_TAP=1;;
+        3) DO_CORTEX_M3=1;;
         6) DO_64BIT=1;;
         m) MEMSIZE=$OPTARG;;
         s) SMP=$OPTARG;;
@@ -50,6 +53,9 @@ shift $((OPTIND-1))
 if [ $DO_64BIT == 1 ]; then
     QEMU="qemu-system-aarch64 -machine virt -cpu cortex-a53"
     PROJECT="qemu-virt-a53-test"
+elif [ $DO_CORTEX_M3 == 1 ]; then
+    QEMU="qemu-system-arm -machine lm3s6965evb -cpu cortex-m3"
+    PROJECT="lm3s6965evb-test"
 else
     QEMU="qemu-system-arm -machine virt -cpu cortex-a15"
     PROJECT="qemu-virt-a15-test"

target/lm3s6965evb/include/target/debugconfig.h

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2012 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef __TARGET_DEBUGCONFIG_H
+#define __TARGET_DEBUGCONFIG_H
+
+#endif

target/lm3s6965evb/init.c

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2016 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <err.h>
+#include <debug.h>
+#include <target.h>
+#include <compiler.h>
+#include <dev/gpio.h>
+#include <platform/gpio.h>
+
+#include "ti_driverlib.h"

target/lm3s6965evb/rules.mk

@@ -0,0 +1,14 @@
+LOCAL_DIR := $(GET_LOCAL_DIR)
+
+MODULE := $(LOCAL_DIR)
+
+STELLARIS_CHIP := LM3S6965
+PLATFORM := stellaris
+
+GLOBAL_DEFINES += \
+	CRYSTAL_FREQ=8000000
+
+MODULE_SRCS += \
+	$(LOCAL_DIR)/init.c
+
+include make/module.mk

target/stellaris-launchpad/rules.mk

@@ -6,7 +6,8 @@ STELLARIS_CHIP := LM4F120H5QR
 PLATFORM := stellaris
 
 GLOBAL_DEFINES += \
-	TARGET_HAS_DEBUG_LED=1
+	TARGET_HAS_DEBUG_LED=1 \
+	CRYSTAL_FREQ=16000000
 
 MODULE_SRCS += \
 	$(LOCAL_DIR)/init.c \