add u-boot sources for danube

[openwrt/svn-archive/archive.git] / target / linux / ifxmips / image / u-boot / files / cpu / mips / danube / incaip_wdt.S

diff --git a/target/linux/ifxmips/image/u-boot/files/cpu/mips/danube/incaip_wdt.S b/target/linux/ifxmips/image/u-boot/files/cpu/mips/danube/incaip_wdt.S
new file mode 100644 (file)
index 0000000..0c6b5e2
--- /dev/null
+++ b/target/linux/ifxmips/image/u-boot/files/cpu/mips/danube/incaip_wdt.S
@@ -0,0 +1,75 @@
+/*
+ *  INCA-IP Watchdog timer management code.
+ *
+ *  Copyright (c) 2003 Wolfgang Denk <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 <config.h>
+#include <version.h>
+#include <asm/regdef.h>
+
+#ifdef CONFIG_INCA_IP
+
+#define WD_BASE            0xb8000000
+#define WD_CON0(value)     0x0020(value)
+#define WD_CON1(value)     0x0024(value)
+#define WD_DISABLE         0x00000008
+#define WD_ENABLE          0x00000000
+#define WD_WRITE_PW        0xFFFC00F8
+#define WD_WRITE_ENDINIT   0xFFFC00F3
+#define WD_WRITE_INIT      0xFFFC00F2
+
+
+       .globl  disable_incaip_wdt
+disable_incaip_wdt:
+       li      t0, WD_BASE
+
+       /* Calculate password.
+        */
+       lw      t2, WD_CON1(t0)
+       and     t2, 0xC
+
+       lw      t3, WD_CON0(t0)
+       and     t3, 0xFFFFFF01
+
+       or      t3, t2
+       or      t3, 0xF0
+
+       sw      t3, WD_CON0(t0)         /* write password */
+
+       /* Clear ENDINIT.
+        */
+       li      t1, WD_WRITE_INIT
+       sw      t1, WD_CON0(t0)
+
+
+       li      t1, WD_DISABLE
+       sw      t1, WD_CON1(t0)         /* disable watchdog */
+       li      t1, WD_WRITE_PW
+       sw      t1, WD_CON0(t0)         /* write password */
+       li      t1, WD_WRITE_ENDINIT
+       sw      t1, WD_CON0(t0)         /* end command */
+
+       j       ra
+       nop
+
+#endif /* CONFIG_INCA_IP */