Support for MIPSsim, the cycle accurate MIPS simulator.

    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 74 insertions, 0 deletions

diff --git a/arch/mips/mips-boards/sim/sim_printf.c b/arch/mips/mips-boards/sim/sim_printf.c
new file mode 100644
index 000000000000..3ee5a0b501a6
--- /dev/null
+++ b/arch/mips/mips-boards/sim/sim_printf.c
@@ -0,0 +1,74 @@
+/*
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope it will be useful, but WITHOUT
+ *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ *  for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Putting things on the screen/serial line using YAMONs facilities.
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/serial_reg.h>
+#include <linux/spinlock.h>
+#include <asm/io.h>
+#include <asm/system.h>
+
+static inline unsigned int serial_in(int offset)
+{
+        return inb(0x3f8 + offset);
+}
+
+static inline void serial_out(int offset, int value)
+{
+        outb(value, 0x3f8 + offset);
+}
+
+int putPromChar(char c)
+{
+        while ((serial_in(UART_LSR) & UART_LSR_THRE) == 0)
+                ;
+
+        serial_out(UART_TX, c);
+
+        return 1;
+}
+
+char getPromChar(void)
+{
+        while (!(serial_in(UART_LSR) & 1))
+                ;
+
+        return serial_in(UART_RX);
+}
+
+void prom_printf(char *fmt, ...)
+{
+        va_list args;
+        int l;
+        char *p, *buf_end;
+        char buf[1024];
+
+        va_start(args, fmt);
+        l = vsprintf(buf, fmt, args); /* hopefully i < sizeof(buf) */
+        va_end(args);
+
+        buf_end = buf + l;
+
+        for (p = buf; p < buf_end; p++) {
+                /* Crude cr/nl handling is better than none */
+                if (*p == '\n')
+                        putPromChar('\r');
+                putPromChar(*p);
+        }
+}