it boots!

platform/stellaris/debug.c

@@ -0,0 +1,137 @@
+/*
+ * Copyright (c) 2012 Ian McKellar
+ *
+ * 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 <stdarg.h>
+#include <reg.h>
+#include <debug.h>
+#include <printf.h>
+#include <lib/cbuf.h>
+#include <kernel/thread.h>
+#include <platform/debug.h>
+#include <arch/ops.h>
+#include <target/debugconfig.h>
+#include <arch/arm/cm3.h>
+
+#include "inc/hw_memmap.h"
+#include "inc/hw_types.h"
+#include "driverlib/debug.h"
+#include "driverlib/fpu.h"
+#include "driverlib/gpio.h"
+#include "driverlib/pin_map.h"
+#include "driverlib/rom.h"
+#include "driverlib/uart.h"
+#include "driverlib/sysctl.h"
+
+#define DEBUG_UART UART0_BASE
+
+
+static cbuf_t debug_rx_buf;
+
+void stellaris_uart_irq(void)
+{
+	inc_critical_section();
+
+
+    //
+    // Get the interrrupt status.
+    //
+    unsigned long ulStatus = UARTIntStatus(DEBUG_UART, true);
+
+    //
+    // Clear the asserted interrupts.
+    //
+    UARTIntClear(DEBUG_UART, ulStatus);
+
+    //
+    // Loop while there are characters in the receive FIFO.
+    //
+    while(UARTCharsAvail(DEBUG_UART))
+    {
+        //
+        // Read the next character from the UART and write it back to the UART.
+        //
+        unsigned char c = UARTCharGetNonBlocking(DEBUG_UART);
+		    cbuf_write(&debug_rx_buf, &c, 1, false);
+
+
+        cm3_trigger_preempt();
+    }
+
+	dec_critical_section();
+}
+
+void stellaris_debug_early_init(void)
+{
+
+  SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
+  SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
+
+  
+    // Set GPIO A0 and A1 as UART pins.
+    //
+    GPIOPinConfigure(GPIO_PA0_U0RX);
+    GPIOPinConfigure(GPIO_PA1_U0TX);
+    GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
+
+
+
+  UARTConfigSetExpClk(DEBUG_UART, SysCtlClockGet(), 115200, UART_CONFIG_WLEN_8|UART_CONFIG_STOP_ONE|UART_CONFIG_PAR_NONE);
+
+  UARTEnable(DEBUG_UART);
+
+}
+
+void stellaris_debug_init(void)
+{
+    //
+    // Enable the UART interrupt.
+    //
+    //ROM_IntEnable(INT_UART0);
+    UARTIntEnable(DEBUG_UART, UART_INT_RX | UART_INT_RT);
+
+}
+
+void platform_dputc(char c)
+{
+	if (c == '\n') {
+		_dputc('\r');
+	}
+
+  UARTCharPut(DEBUG_UART, c);
+}
+
+int platform_dgetc(char *c, bool wait)
+{
+	return cbuf_read(&debug_rx_buf, c, 1, wait);
+}
+
+void platform_halt(void)
+{
+	dprintf(ALWAYS, "HALT: spinning forever...\n");
+	for(;;);
+}
+
+
+// TI driverlib debug function
+extern void __error__(char *pcFilename, unsigned long ulLine)
+{
+}