Commit eb0ce572 authored by blogic's avatar blogic

BB: lantiq: falcon/vr9 - vpe softdog

(required not-distributable firmware blob - dump it by yourself from original firmware)
Signed-off-by: default avatarEddi De Pieri <eddi@depieri.net>

git-svn-id: svn://svn.openwrt.org/openwrt/branches/barrier_breaker@43157 3c298f89-4303-0410-b956-a3cf2f4a3e73
parent ea9e61b8
--- /dev/null
+++ b/arch/mips/include/asm/mach-lantiq/vpe.h
@@ -0,0 +1,44 @@
+/*
+ * 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.
+ *
+ * Copyright (C) 2005 infineon
+ * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
+ *
+ */
+#ifndef _IFXMIPS_VPE_H__
+#define _IFXMIPS_VPE_H__
+
+/* For the explanation of the APIs please refer the section "MT APRP Kernel
+ * Programming" in AR9 SW Architecture Specification
+ */
+int32_t vpe1_sw_start(void* sw_start_addr, uint32_t tcmask, uint32_t flags);
+int32_t vpe1_sw_stop(uint32_t flags);
+uint32_t vpe1_get_load_addr (uint32_t flags);
+uint32_t vpe1_get_max_mem (uint32_t flags);
+
+int32_t vpe1_set_boot_param(char *field, char *value, char flags);
+int32_t vpe1_get_boot_param(char *field, char **value, char flags);
+
+/* Watchdog APIs */
+extern unsigned long vpe1_wdog_ctr;
+extern unsigned long vpe1_wdog_timeout;
+
+unsigned long vpe1_sw_wdog_start(unsigned long);
+unsigned long vpe1_sw_wdog_stop(unsigned long);
+
+typedef int (*VPE_SW_WDOG_RESET)(unsigned long wdog_cleared_ok_count);
+int32_t vpe1_sw_wdog_register_reset_handler(VPE_SW_WDOG_RESET reset_fn);
+
+#endif
--- /dev/null
+++ b/arch/mips/lantiq/softdog_vpe.c
@@ -0,0 +1,109 @@
+/*
+** =============================================================================
+** FILE NAME : softdog_vpe.c
+** MODULES : LXDB
+** DATE : 24-03-2008
+** AUTHOR : LXDB Team
+** DESCRIPTION : This header file contains the code for the watchdog
+** implentation on vpe1 side.
+** REFERENCES :
+** COPYRIGHT : Copyright (c) 2008
+** Am Campeon 1-12, 85579 Neubiberg, Germany
+** Any use of this software is subject to the conclusion of a respective
+** License agreement. Without such a License agreement no rights to the
+** software are granted
+**
+** HISTORY :
+** $Date $Author $Comment
+** 24-03-2008 LXDB Initial version
+** ============================================================================
+*/
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
+#include <linux/timer.h>
+#include <linux/reboot.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
+
+#include <vpe.h>
+
+static unsigned long last_wdog_value;
+static unsigned long vpe1_wdog_cleared;
+
+static unsigned long vpe1_wdog_dead;
+static void watchdog_vpe0_fire(unsigned long); /* Called when vpe0 timer expires */
+static void keep_alive_vpe0(unsigned long);
+VPE_SW_WDOG_RESET reset_local_fn;
+
+
+static struct timer_list watchdog_vpe0_ticktock =
+ TIMER_INITIALIZER(watchdog_vpe0_fire, 0, 0);
+
+static void watchdog_vpe0_fire (unsigned long flags)
+{
+ volatile unsigned long *wdog_ctr_value;
+ wdog_ctr_value = (void*)vpe1_wdog_ctr;
+ if (*wdog_ctr_value == last_wdog_value) { /* VPE1 watchdog expiry handling */
+ vpe1_sw_wdog_stop(flags);
+ vpe1_wdog_dead++;
+ printk(KERN_DEBUG "VPE1 watchdog reset handler called\n");
+ /* Call the reset handler function */
+ reset_local_fn(flags);
+ } else { /* Everything is OK on vpe1 side. Continue. */
+ last_wdog_value = *wdog_ctr_value;
+ vpe1_wdog_cleared++;
+ keep_alive_vpe0(flags);
+ }
+}
+
+int32_t vpe1_sw_wdog_register_reset_handler (VPE_SW_WDOG_RESET reset_fn)
+{
+ reset_local_fn = (VPE_SW_WDOG_RESET)reset_fn;
+ return 0;
+}
+
+static void keep_alive_vpe0(unsigned long flags)
+{
+ mod_timer(&watchdog_vpe0_ticktock, jiffies+ vpe1_wdog_timeout );
+}
+
+unsigned long vpe1_sw_wdog_start(unsigned long flags)
+{
+ volatile unsigned long *wdog_ctr_value;
+ wdog_ctr_value = (void*)vpe1_wdog_ctr;
+ *wdog_ctr_value = 0;
+ last_wdog_value = 0;
+ keep_alive_vpe0(flags);
+ return 0;
+}
+
+unsigned long vpe1_sw_wdog_stop(unsigned long flags)
+{
+ del_timer(&watchdog_vpe0_ticktock);
+ return 0;
+}
+
+static int __init watchdog_vpe1_init(void)
+{
+ /* Nothing to be done here */
+ return 0;
+}
+
+static void __exit watchdog_vpe1_exit(void)
+{
+ unsigned long flags=0;
+ vpe1_sw_wdog_stop(flags);
+}
+
+module_init(watchdog_vpe1_init);
+module_exit(watchdog_vpe1_exit);
+
+EXPORT_SYMBOL(vpe1_sw_wdog_register_reset_handler);
+EXPORT_SYMBOL(vpe1_sw_wdog_start);
+EXPORT_SYMBOL(vpe1_sw_wdog_stop);
+
+MODULE_AUTHOR("LXDB");
+MODULE_DESCRIPTION("Software Watchdog For VPE1");
+MODULE_LICENSE("GPL");
--- a/arch/mips/lantiq/Makefile 2014-10-15 21:41:46.000000000 +0200
+++ b/arch/mips/lantiq/Makefile 2014-10-19 22:44:44.000000000 +0200
@@ -4,7 +4,7 @@
# under the terms of the GNU General Public License version 2 as published
# by the Free Software Foundation.
-obj-y := irq.o clk.o prom.o
+obj-y := irq.o clk.o prom.o softdog_vpe.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
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