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hardware watchdog 

SVN-Revision: 3655
lede-17.01
Mike Baker 2006-04-14 22:11:32 +00:00
parent 3efa4a2b34
commit c89d6bd29f
2 changed files with 159 additions and 39 deletions
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41
openwrt/target/linux/aruba-2.6/patches/000-aruba.patch
View File

@ -45,7 +45,7 @@ diff -Nur linux-2.6.16/arch/mips/aruba/Makefile linux-2.6.16-owrt/arch/mips/arub
+# .S.o:
+# $(CC) $(CFLAGS) -c $< -o $*.o
+
+obj-y := prom.o setup.o idtIRQ.o irq.o time.o flash_lock.o wdt_merlot.o
+obj-y := prom.o setup.o idtIRQ.o irq.o time.o flash_lock.o
+obj-$(CONFIG_SERIAL_8250) += serial.o
+
+subdir-y += nvram
@ -783,7 +783,7 @@ diff -Nur linux-2.6.16/arch/mips/aruba/serial.c linux-2.6.16-owrt/arch/mips/arub
diff -Nur linux-2.6.16/arch/mips/aruba/setup.c linux-2.6.16-owrt/arch/mips/aruba/setup.c
--- linux-2.6.16/arch/mips/aruba/setup.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.16-owrt/arch/mips/aruba/setup.c 2006-03-20 14:30:00.000000000 +0100
@@ -0,0 +1,125 @@
@@ -0,0 +1,122 @@
+/**************************************************************************
+ *
+ * BRIEF MODULE DESCRIPTION
@ -872,7 +872,6 @@ diff -Nur linux-2.6.16/arch/mips/aruba/setup.c linux-2.6.16-owrt/arch/mips/aruba
+
+extern char * getenv(char *e);
+extern void unlock_ap60_70_flash(void);
+extern void wdt_merlot_disable(void);
+
+void __init plat_setup(void)
+{
@ -895,8 +894,6 @@ diff -Nur linux-2.6.16/arch/mips/aruba/setup.c linux-2.6.16-owrt/arch/mips/aruba
+
+ printk("BOARD - %s\n",getenv("boardname"));
+
+ wdt_merlot_disable();
+
+ return 0;
+}
+
@ -1021,40 +1018,6 @@ diff -Nur linux-2.6.16/arch/mips/aruba/time.c linux-2.6.16-owrt/arch/mips/aruba/
+ timer_interrupt(irq, NULL, regs);
+ irq_exit();
+}
diff -Nur linux-2.6.16/arch/mips/aruba/wdt_merlot.c linux-2.6.16-owrt/arch/mips/aruba/wdt_merlot.c
--- linux-2.6.16/arch/mips/aruba/wdt_merlot.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.16-owrt/arch/mips/aruba/wdt_merlot.c 2006-03-20 14:25:10.000000000 +0100
@@ -0,0 +1,30 @@
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <asm/bootinfo.h>
+
+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;
+ case MACH_ARUBA_AP65:
+ case MACH_ARUBA_AP60:
+ default:
+ wdt_ctl = (__u32 *) 0xbc003008;
+ *wdt_ctl = 0;
+ break;
+ }
+}
diff -Nur linux-2.6.16/arch/mips/Kconfig linux-2.6.16-owrt/arch/mips/Kconfig
--- linux-2.6.16/arch/mips/Kconfig 2006-03-20 06:53:29.000000000 +0100
+++ linux-2.6.16-owrt/arch/mips/Kconfig 2006-03-20 14:25:10.000000000 +0100

157
openwrt/target/linux/aruba-2.6/patches/004-wdt.patch Normal file
View File

@ -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