diff options
Diffstat (limited to 'openwrt/target/linux/aruba-2.6/patches/004-wdt.patch')
| -rw-r--r-- | openwrt/target/linux/aruba-2.6/patches/004-wdt.patch | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/openwrt/target/linux/aruba-2.6/patches/004-wdt.patch b/openwrt/target/linux/aruba-2.6/patches/004-wdt.patch new file mode 100644 index 000000000..cb2e76e78 --- /dev/null +++ b/openwrt/target/linux/aruba-2.6/patches/004-wdt.patch @@ -0,0 +1,157 @@ +diff -Nur linux-2.6.15.1/drivers/char/watchdog/wdt_merlot.c linux-2.6.15.1-openwrt/drivers/char/watchdog/wdt_merlot.c +--- linux-2.6.15.1/drivers/char/watchdog/wdt_merlot.c 2006-01-26 21:14:02.204626250 -0800 ++++ linux-2.6.15.1-openwrt/drivers/char/watchdog/wdt_merlot.c 2006-02-02 20:31:43.000000000 -0800 +@@ -0,0 +1,141 @@ ++#include <linux/config.h> ++#include <linux/module.h> ++#include <linux/types.h> ++#include <linux/miscdevice.h> ++#include <linux/watchdog.h> ++#include <linux/fs.h> ++ ++#include <asm/io.h> ++#include <asm/uaccess.h> ++#include <asm/system.h> ++#include <asm/bootinfo.h> ++ ++// refresh the watchdog timer for this many seconds in kernel ++// before letting the watchdog process take over. ++#define WDT_COUNT 60 ++ ++extern unsigned long mips_machtype; ++ ++static unsigned long wdt_is_open; ++static struct timer_list wdt_timer; ++static int wdt_count = WDT_COUNT; ++ ++static void wdt_merlot_refresh(void){ ++ volatile __u32 *wdt; ++ switch (mips_machtype) { ++ case MACH_ARUBA_AP70: ++ wdt = (__u32 *)0xb8030034; ++ *wdt = 0x10000000; ++ break; ++ default: ++ wdt = (__u32 *)0xbc00300c; ++ *wdt = 0x40000000; ++ break; ++ } ++} ++ ++static void wdt_merlot_disable() ++{ ++ volatile __u32 *wdt_errcs; ++ volatile __u32 *wdt_wtc; ++ volatile __u32 *wdt_ctl; ++ volatile __u32 val ; ++ ++ switch (mips_machtype) { ++ case MACH_ARUBA_AP70: ++ wdt_errcs = (__u32 *)0xb8030030 ; ++ wdt_wtc = (__u32 *)0xb803003c ; ++ val = *wdt_errcs ; ++ val &= ~0x201 ; ++ *wdt_errcs = val ; ++ val = *wdt_wtc ; ++ val &= ~0x1 ; ++ *wdt_wtc = val ; ++ break; ++ default: ++ wdt_ctl = (__u32 *)0xbc003008; ++ *wdt_ctl = 0 ; ++ break; ++ } ++} ++ ++static void wdt_merlot_timer_fn(unsigned long data){ ++ ++ wdt_merlot_refresh(); ++ if (--wdt_count >= 0) ++ mod_timer(&wdt_timer, jiffies + HZ); ++ else ++ wdt_merlot_disable(); ++ ++} ++ ++static int wdt_merlot_setup_timer(void){ ++ ++ init_timer(&wdt_timer); ++ wdt_timer.function = wdt_merlot_timer_fn; ++ wdt_timer.data = 0; ++ wdt_timer.expires = jiffies + HZ; ++ add_timer(&wdt_timer); ++ return 0; ++} ++ ++static int wdt_open(struct inode *inode, struct file *file) ++{ ++ if(test_and_set_bit(0, &wdt_is_open)) ++ return -EBUSY; ++ wdt_count=0; ++ return nonseekable_open(inode, file); ++} ++ ++static ssize_t wdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) ++{ ++ if (count) { /* something was written */ ++ wdt_merlot_refresh(); ++ } ++ return count; ++} ++ ++static int wdt_release(struct inode *inode, struct file *file) ++{ ++ clear_bit(0, &wdt_is_open); ++ return 0; ++} ++ ++static struct file_operations wdt_fops = { ++ .owner = THIS_MODULE, ++ .llseek = no_llseek, ++ .write = wdt_write, ++ .open = wdt_open, ++ .release = wdt_release, ++}; ++ ++static struct miscdevice wdt_miscdev = { ++ .minor = WATCHDOG_MINOR, ++ .name = "watchdog", ++ .fops = &wdt_fops, ++}; ++ ++static void __exit wdt_exit(void) ++{ ++ misc_deregister(&wdt_miscdev); ++} ++ ++static int __init wdt_init(void) ++{ ++ int ret; ++ ret = misc_register(&wdt_miscdev); ++ if (ret) { ++ printk(KERN_ERR "wdt: cannot register miscdev on minor=%d (err=%d)\n", ++ WATCHDOG_MINOR, ret); ++ misc_deregister(&wdt_miscdev); ++ goto out; ++ } ++ printk("wdt: registered with refresh\n"); ++ wdt_merlot_refresh(); ++ wdt_merlot_setup_timer(); ++out: ++ return ret; ++} ++ ++module_init(wdt_init); ++module_exit(wdt_exit); +diff -Nur linux-2.6.15.3/drivers/char/watchdog/Makefile linux-2.6.15.3-openwrt/drivers/char/watchdog/Makefile +--- linux-2.6.15.3/drivers/char/watchdog/Makefile 2006-02-22 10:04:18.596278000 -0800 ++++ linux-2.6.15.3-openwrt/drivers/char/watchdog/Makefile 2006-02-22 10:06:21.400960000 -0800 +@@ -71,5 +71,8 @@ + + # SPARC64 Architecture + ++# Aruba Architecture ++obj-$(CONFIG_MACH_ARUBA) += wdt_merlot.o ++ + # Architecture Independant + obj-$(CONFIG_SOFT_WATCHDOG) += softdog.o |