[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/bsp/lk/platform/stellaris/debug.c b/src/bsp/lk/platform/stellaris/debug.c
new file mode 100644
index 0000000..e2e0e29
--- /dev/null
+++ b/src/bsp/lk/platform/stellaris/debug.c
@@ -0,0 +1,117 @@
+/*
+ * 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 <stdio.h>
+#include <lib/cbuf.h>
+#include <kernel/thread.h>
+#include <platform/debug.h>
+#include <arch/ops.h>
+#include <target/debugconfig.h>
+#include <arch/arm/cm.h>
+
+#include "ti_driverlib.h"
+
+#include "inc/hw_memmap.h"
+#include "inc/hw_types.h"
+
+#define DEBUG_UART UART0_BASE
+
+static cbuf_t debug_rx_buf;
+
+void stellaris_uart0_irq(void)
+{
+ arm_cm_irq_entry();
+
+ //
+ // 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.
+ //
+ bool resched = false;
+ 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_char(&debug_rx_buf, c, false);
+
+ resched = true;
+ }
+
+ arm_cm_irq_exit(resched);
+}
+
+void stellaris_debug_early_init(void)
+{
+ SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
+
+ /* we only support UART0 right now */
+ STATIC_ASSERT(DEBUG_UART == UART0_BASE);
+
+ if (DEBUG_UART == UART0_BASE) {
+ /* 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);
+ }
+
+ 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)
+{
+ cbuf_initialize(&debug_rx_buf, 16);
+
+ /* Enable the UART interrupt. */
+ UARTIntEnable(DEBUG_UART, UART_INT_RX | UART_INT_RT);
+
+ NVIC_EnableIRQ(INT_UART0 - 16);
+
+}
+
+void platform_dputc(char c)
+{
+ if (c == '\n') {
+ platform_dputc('\r');
+ }
+
+ UARTCharPut(DEBUG_UART, c);
+}
+
+int platform_dgetc(char *c, bool wait)
+{
+ return cbuf_read_char(&debug_rx_buf, c, wait);
+}
+