o add arm lpc2148 helloword

o opencd config for mac

poc/lpc2148_blinky/console.c

@@ -0,0 +1,55 @@
+/*
+	Simple console input/output, over serial port #0
+
+	Partially copied from Jim Lynch's tutorial
+*/
+
+#include "console.h"
+
+#define PINSEL0		*(volatile unsigned int *)0xE002C000
+
+#define U0THR		*(volatile unsigned int *)0xE000C000
+#define U0RBR		*(volatile unsigned int *)0xE000C000
+#define U0DLL		*(volatile unsigned int *)0xE000C000
+#define U0DLM		*(volatile unsigned int *)0xE000C004
+#define U0FCR		*(volatile unsigned int *)0xE000C008
+#define U0LCR		*(volatile unsigned int *)0xE000C00C
+#define U0LSR		*(volatile unsigned int *)0xE000C014
+
+/* Initialize Serial Interface       */
+void ConsoleInit(int iDivider)
+{
+    PINSEL0 = (PINSEL0 & ~0x0000000F) | 0x00000005;     /* Enable RxD0 and TxD0              */
+    U0LCR = 0x83;               /* 8 bits, no Parity, 1 Stop bit     */
+    U0DLL = iDivider & 0xFF;    /* set divider / baud rate */
+    U0DLM = iDivider >> 8;
+    U0LCR = 0x03;               /* DLAB = 0                          */
+
+    // enable FIFO
+    U0FCR = 1;
+}
+
+/* Write character to Serial Port    */
+int putchar(int ch)
+{
+    if (ch == '\n') {
+        while (!(U0LSR & 0x20));
+        U0THR = '\r';
+    }
+    while (!(U0LSR & 0x20));
+    U0THR = ch;
+    return ch;
+}
+int getchar(void)
+{                               /* Read character from Serial Port   */
+    while (!(U0LSR & 0x01));
+    return (U0RBR);
+}
+int puts(char *s)
+{
+    while (*s) {
+        putchar(*s++);
+    }
+    //putchar('\n');
+    return 1;
+}