From 90089603393a1a67b9a4afe1f2b7237a74e1b21b Mon Sep 17 00:00:00 2001
From: Eric Biederman <ebiederm@xmission.com>
Date: Fri, 28 May 2004 14:11:54 +0000
Subject: - Upgrade to romcc version 0.63   This includes more test cases  
 Lots of small bug fixes   A built in C preprocessor   Initial support for not
 inlining everything   __attribute__((noinline)) works   Better command line
 options and help   Constants arrays can be read at compile time   Asm
 statements that are not volatile will now be removed when their outputs go
 unused   Loads and stores that are not volatile will be removed when their
 values go unused   The number of FIXMES in the code is finally starting to go
 down.

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1582 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
---
 util/romcc/tests/hello_world1.c | 128 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 128 insertions(+)
 create mode 100644 util/romcc/tests/hello_world1.c

(limited to '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
index 0000000000..6dd80d89b8
--- /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) {
+		;
+	}
+}
-- 
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