1 files changed, 120 insertions, 0 deletions
diff --git a/src/roms/SLOF/board-js2x/rtas/rtas_out.c b/src/roms/SLOF/board-js2x/rtas/rtas_out.c
new file mode 100644
index 0000000..ce4c00b
--- /dev/null
+++ b/src/roms/SLOF/board-js2x/rtas/rtas_out.c
@@ -0,0 +1,120 @@
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ *     IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#include <cpu.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <rtas.h>
+#include <hw.h>
+#include "rtas_board.h"
+
+volatile unsigned char *uart;
+volatile unsigned char u4Flag;
+
+void io_init(void);
+unsigned long check_flash_image(unsigned long rombase, unsigned long length,
+				unsigned long start_crc);
+
+void
+io_init(void)
+{
+	// read ID register: only if it is a PC87427, enable serial2
+	store8_ci(0xf400002e, 0x20);
+	if (load8_ci(0xf400002f) != 0xf2) {
+		uart = (volatile unsigned char *) 0xf40003f8;
+		u4Flag = 0;
+	} else {
+		uart = (volatile unsigned char *) 0xf40002f8;
+		u4Flag = 1;
+	}
+}
+
+static void
+display_char(char ch)
+{
+	volatile int i = 0;
+	volatile unsigned char *uart = (volatile unsigned char *) 0xf40002f8;
+	int cnt = 2;
+	while (cnt--) {
+		set_ci();
+		while (!(uart[5] & 0x20)) {
+			i++;
+		}
+		uart[0] = ch;
+		clr_ci();
+		uart += 0x100;
+	}
+}
+
+ssize_t
+write(int fd __attribute((unused)), const void *buf, size_t cnt)
+{
+	while (cnt--) {
+		display_char(*(char *) buf);
+		if (*(char *) buf++ == '\n')
+			display_char('\r');
+	}
+	return 0;
+}
+
+void *
+sbrk(int incr __attribute((unused)))
+{
+	return (void *) -1;
+}
+
+
+
+void
+rtas_display_character(rtas_args_t * pArgs)
+{
+	int retVal = 0;
+	display_char((char) pArgs->args[0]);
+	pArgs->args[1] = retVal;
+}
+
+unsigned long
+check_flash_image(unsigned long rombase, unsigned long length,
+		  unsigned long start_crc)
+{
+	const uint32_t CrcTableHigh[16] = {
+		0x00000000, 0x4C11DB70, 0x9823B6E0, 0xD4326D90,
+		0x34867077, 0x7897AB07, 0xACA5C697, 0xE0B41DE7,
+		0x690CE0EE, 0x251D3B9E, 0xF12F560E, 0xBD3E8D7E,
+		0x5D8A9099, 0x119B4BE9, 0xC5A92679, 0x89B8FD09
+	};
+	const uint32_t CrcTableLow[16] = {
+		0x00000000, 0x04C11DB7, 0x09823B6E, 0x0D4326D9,
+		0x130476DC, 0x17C56B6B, 0x1A864DB2, 0x1E475005,
+		0x2608EDB8, 0x22C9F00F, 0x2F8AD6D6, 0x2B4BCB61,
+		0x350C9B64, 0x31CD86D3, 0x3C8EA00A, 0x384FBDBD
+	};
+
+	char *Buffer = (char *) rombase;
+	uint32_t AccumCRC = start_crc;
+	char val;
+	uint32_t Temp;
+	while (length-- > 0) {
+		set_ci();
+		val = *Buffer;
+		clr_ci();
+		Temp = ((AccumCRC >> 24) ^ val) & 0x000000ff;
+		AccumCRC <<= 8;
+		AccumCRC ^= CrcTableHigh[Temp / 16];
+		AccumCRC ^= CrcTableLow[Temp % 16];
+		++Buffer;
+	}
+	return AccumCRC;
+}