init commit via android 4.4 uboot

1 files changed, 76 insertions, 0 deletions

diff --git a/lib_m68k/traps.c b/lib_m68k/traps.c
new file mode 100755
index 0000000..1ca94dc
--- /dev/null
+++ b/lib_m68k/traps.c
@@ -0,0 +1,76 @@
+/*
+ * (C) Copyright 2003
+ * Josef Baumgartner <josef.baumgartner@telex.de>
+ *
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that 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
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <asm/processor.h>
+
+
+extern void _exc_handler(void);
+extern void _int_handler(void);
+
+static void show_frame(struct pt_regs *fp)
+{
+	printf ("Vector Number: %d  Format: %02x  Fault Status: %01x\n\n", (fp->vector & 0x3fc) >> 2,
+	        fp->format, (fp->vector & 0x3) | ((fp->vector & 0xc00) >> 8));
+	printf ("PC: %08lx    SR: %08lx    SP: %08lx\n", fp->pc, (long) fp->sr, (long) fp);
+	printf ("D0: %08lx    D1: %08lx    D2: %08lx    D3: %08lx\n",
+		fp->d0, fp->d1, fp->d2, fp->d3);
+	printf ("D4: %08lx    D5: %08lx    D6: %08lx    D7: %08lx\n",
+		fp->d4, fp->d5, fp->d6, fp->d7);
+	printf ("A0: %08lx    A1: %08lx    A2: %08lx    A3: %08lx\n",
+		fp->a0, fp->a1, fp->a2, fp->a3);
+	printf ("A4: %08lx    A5: %08lx    A6: %08lx\n",
+		fp->a4, fp->a5, fp->a6);
+}
+
+void exc_handler(struct pt_regs *fp) {
+	printf("\n\n*** Unexpected exception ***\n");
+	show_frame (fp);
+	printf("\n*** Please Reset Board! ***\n");
+	for(;;);
+}
+
+void trap_init(ulong value) {
+	unsigned long *vec = (ulong *)value;
+	int i;
+
+	for(i = 2; i < 25; i++) {
+		vec[i] = (unsigned long)_exc_handler;
+	}
+	for(i = 25; i < 32; i++) {
+		vec[i] = (unsigned long)_int_handler;
+	}
+	for(i = 32; i < 64; i++) {
+		vec[i] = (unsigned long)_exc_handler;
+	}
+	for(i = 64; i < 256; i++) {
+		vec[i] = (unsigned long)_int_handler;
+	}
+
+	setvbr(value);		/* set vector base register to new table */
+}