diff options
Diffstat (limited to 'target/linux/lantiq')
| -rw-r--r-- | target/linux/lantiq/patches-4.4/0153-lantiq-VPE-softdog.patch | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-4.4/0153-lantiq-VPE-softdog.patch b/target/linux/lantiq/patches-4.4/0153-lantiq-VPE-softdog.patch new file mode 100644 index 0000000000..2f5572a9bd --- /dev/null +++ b/target/linux/lantiq/patches-4.4/0153-lantiq-VPE-softdog.patch @@ -0,0 +1,171 @@ +--- /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 ++++ b/arch/mips/lantiq/Makefile +@@ -6,6 +6,8 @@ + + obj-y := irq.o clk.o prom.o + ++obj-$(CONFIG_MIPS_VPE_LOADER) += softdog_vpe.o ++ + obj-$(CONFIG_EARLY_PRINTK) += early_printk.o + + obj-$(CONFIG_SOC_TYPE_XWAY) += xway/ |