- Upgrade to romcc version 0.63

[coreboot.git] / util / romcc / tests / hello_world1.c

diff --git a/util/romcc/tests/hello_world1.c b/util/romcc/tests/hello_world1.c
new file mode 100644 (file)
index 0000000..6dd80d8
--- /dev/null
+++ b/util/romcc/tests/hello_world1.c
@@ -0,0 +1,128 @@
+void outb(unsigned char value, unsigned short port)
+{
+       __builtin_outb(value, port);
+}
+
+unsigned char inb(unsigned short port)
+{
+       return __builtin_inb(port);
+}
+
+/* Base Address */
+#ifndef TTYS0_BASE
+#define TTYS0_BASE 0x3f8
+#endif
+
+#ifndef TTYS0_BAUD
+#define TTYS0_BAUD 115200
+#endif
+
+#if ((115200%TTYS0_BAUD) != 0)
+#error Bad ttys0 baud rate
+#endif
+
+#if TTYS0_BAUD == 115200
+#define TTYS0_DIV (1)
+#else
+#define TTYS0_DIV      (115200/TTYS0_BAUD)
+#endif
+
+/* Line Control Settings */
+#ifndef TTYS0_LCS
+/* Set 8bit, 1 stop bit, no parity */
+#define TTYS0_LCS      0x3
+#endif
+
+#define UART_LCS       TTYS0_LCS
+
+/* Data */
+#define UART_RBR 0x00
+#define UART_TBR 0x00
+
+/* Control */
+#define UART_IER 0x01
+#define UART_IIR 0x02
+#define UART_FCR 0x02
+#define UART_LCR 0x03
+#define UART_MCR 0x04
+#define UART_DLL 0x00
+#define UART_DLM 0x01
+
+/* Status */
+#define UART_LSR 0x05
+#define UART_MSR 0x06
+#define UART_SCR 0x07
+
+int uart_can_tx_byte(void)
+{
+       return inb(TTYS0_BASE + UART_LSR) & 0x20;
+}
+
+void uart_wait_to_tx_byte(void)
+{
+       while(!uart_can_tx_byte())
+               ;
+}
+
+void uart_wait_until_sent(void)
+{
+       while(!(inb(TTYS0_BASE + UART_LSR) & 0x40)) 
+               ;
+}
+
+static void uart_tx_byte(unsigned char data)
+{
+       uart_wait_to_tx_byte();
+       outb(data, TTYS0_BASE + UART_TBR);
+       /* Make certain the data clears the fifos */
+       uart_wait_until_sent();
+}
+
+
+void uart_init(void)
+{
+       /* disable interrupts */
+       outb(0x0, TTYS0_BASE + UART_IER);
+       /* enable fifo's */
+       outb(0x01, TTYS0_BASE + UART_FCR);
+       /* Set Baud Rate Divisor to 12 ==> 115200 Baud */
+       outb(0x80 | UART_LCS, TTYS0_BASE + UART_LCR);
+       outb(TTYS0_DIV & 0xFF,   TTYS0_BASE + UART_DLL);
+       outb((TTYS0_DIV >> 8) & 0xFF,    TTYS0_BASE + UART_DLM);
+       outb(UART_LCS, TTYS0_BASE + UART_LCR);
+}
+
+
+void __console_tx_char(unsigned char byte)
+{
+       uart_tx_byte(byte);
+               
+}
+
+void __console_tx_string(char *str)
+{
+       unsigned char ch;
+       while((ch = *str++) != '\0') {
+               __console_tx_char(ch);
+       }
+}
+
+
+void print_debug_char(unsigned char byte) { __console_tx_char(byte); }
+void print_debug(char *str) { __console_tx_string(str); }
+
+void main(void)
+{
+       static const char msg[] = "hello world\r\n";
+       uart_init();
+#if 0
+       print_debug(msg);
+#endif
+#if 1
+       print_debug("hello world\r\n");
+       print_debug("how are you today\r\n");
+#endif
+       while(1) {
+               ;
+       }
+}