1 files changed, 97 insertions, 0 deletions
diff --git a/arch/mips/mips-boards/atlas/atlas_gdb.c b/arch/mips/mips-boards/atlas/atlas_gdb.c
new file mode 100644
index 00000000000..fb65280f178
--- /dev/null
+++ b/arch/mips/mips-boards/atlas/atlas_gdb.c
@@ -0,0 +1,97 @@
+/*
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 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.
+ *
+ * This is the interface to the remote debugger stub.
+ */
+#include <asm/io.h>
+#include <asm/mips-boards/atlas.h>
+#include <asm/mips-boards/saa9730_uart.h>
+
+#define INB(a)     inb((unsigned long)a)
+#define OUTB(x,a)  outb(x,(unsigned long)a)
+
+/*
+ * This is the interface to the remote debugger stub
+ * if the Philips part is used for the debug port,
+ * called from the platform setup code.
+ */
+void *saa9730_base = (void *)ATLAS_SAA9730_REG;
+
+static int saa9730_kgdb_active = 0;
+
+#define SAA9730_BAUDCLOCK(baud) (((ATLAS_SAA9730_BAUDCLOCK/(baud))/16)-1)
+
+int saa9730_kgdb_hook(int speed)
+{
+	int baudclock;
+	t_uart_saa9730_regmap *kgdb_uart = (t_uart_saa9730_regmap *)(saa9730_base + SAA9730_UART_REGS_ADDR);
+
+        /*
+         * Clear all interrupts
+         */
+	(void) INB(&kgdb_uart->Lsr);
+	(void) INB(&kgdb_uart->Msr);
+	(void) INB(&kgdb_uart->Thr_Rbr);
+	(void) INB(&kgdb_uart->Iir_Fcr);
+
+        /*
+         * Now, initialize the UART
+         */
+	/* 8 data bits, one stop bit, no parity */
+	OUTB(SAA9730_LCR_DATA8, &kgdb_uart->Lcr);
+
+	baudclock = SAA9730_BAUDCLOCK(speed);
+
+	OUTB((baudclock >> 16) & 0xff, &kgdb_uart->BaudDivMsb);
+	OUTB( baudclock        & 0xff, &kgdb_uart->BaudDivLsb);
+
+	/* Set RTS/DTR active */
+	OUTB(SAA9730_MCR_DTR | SAA9730_MCR_RTS, &kgdb_uart->Mcr);
+	saa9730_kgdb_active = 1;
+
+	return speed;
+}
+
+int saa9730_putDebugChar(char c)
+{
+	t_uart_saa9730_regmap *kgdb_uart = (t_uart_saa9730_regmap *)(saa9730_base + SAA9730_UART_REGS_ADDR);
+
+        if (!saa9730_kgdb_active) {     /* need to init device first */
+                return 0;
+        }
+
+        while (!(INB(&kgdb_uart->Lsr) & SAA9730_LSR_THRE))
+                ;
+	OUTB(c, &kgdb_uart->Thr_Rbr);
+
+        return 1;
+}
+
+char saa9730_getDebugChar(void)
+{
+	t_uart_saa9730_regmap *kgdb_uart = (t_uart_saa9730_regmap *)(saa9730_base + SAA9730_UART_REGS_ADDR);
+	char c;
+
+        if (!saa9730_kgdb_active) {     /* need to init device first */
+                return 0;
+        }
+        while (!(INB(&kgdb_uart->Lsr) & SAA9730_LSR_DR))
+                ;
+
+	c = INB(&kgdb_uart->Thr_Rbr);
+	return(c);
+}