diff options
| -rw-r--r-- | arch/ppc/kernel/setup.c | 8 | ||||
| -rw-r--r-- | drivers/char/watchdog/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/char/watchdog/booke_wdt.c | 23 | ||||
| -rw-r--r-- | include/asm-ppc/system.h | 4 |
4 files changed, 21 insertions, 17 deletions
diff --git a/arch/ppc/kernel/setup.c b/arch/ppc/kernel/setup.c index 9c44588f0af..545cfd0fab5 100644 --- a/arch/ppc/kernel/setup.c +++ b/arch/ppc/kernel/setup.c @@ -623,10 +623,8 @@ machine_init(unsigned long r3, unsigned long r4, unsigned long r5, /* Checks wdt=x and wdt_period=xx command-line option */ int __init early_parse_wdt(char *p) { - extern u32 wdt_enable; - if (p && strncmp(p, "0", 1) != 0) - wdt_enable = 1; + booke_wdt_enabled = 1; return 0; } @@ -634,10 +632,8 @@ early_param("wdt", early_parse_wdt); int __init early_parse_wdt_period (char *p) { - extern u32 wdt_period; - if (p) - wdt_period = simple_strtoul(p, NULL, 0); + booke_wdt_period = simple_strtoul(p, NULL, 0); return 0; } diff --git a/drivers/char/watchdog/Kconfig b/drivers/char/watchdog/Kconfig index 95335b443a8..c3898afce3a 100644 --- a/drivers/char/watchdog/Kconfig +++ b/drivers/char/watchdog/Kconfig @@ -349,6 +349,9 @@ config 8xx_WDT config BOOKE_WDT tristate "PowerPC Book-E Watchdog Timer" depends on WATCHDOG && (BOOKE || 4xx) + ---help--- + Please see Documentation/watchdog/watchdog-api.txt for + more information. # MIPS Architecture diff --git a/drivers/char/watchdog/booke_wdt.c b/drivers/char/watchdog/booke_wdt.c index 7281f394f68..abc30cca664 100644 --- a/drivers/char/watchdog/booke_wdt.c +++ b/drivers/char/watchdog/booke_wdt.c @@ -23,6 +23,7 @@ #include <asm/reg_booke.h> #include <asm/uaccess.h> +#include <asm/system.h> /* If the kernel parameter wdt_enable=1, the watchdog will be enabled at boot. * Also, the wdt_period sets the watchdog timer period timeout. @@ -38,8 +39,8 @@ #define WDT_PERIOD_DEFAULT 4 /* Refer to the PPC40x and PPC4xx manuals */ #endif /* for timing information */ -u32 wdt_enable = 0; -u32 wdt_period = WDT_PERIOD_DEFAULT; +u32 booke_wdt_enabled = 0; +u32 booke_wdt_period = WDT_PERIOD_DEFAULT; #ifdef CONFIG_FSL_BOOKE #define WDTP(x) ((((63-x)&0x3)<<30)|(((63-x)&0x3c)<<15)) @@ -55,7 +56,7 @@ static __inline__ void booke_wdt_enable(void) u32 val; val = mfspr(SPRN_TCR); - val |= (TCR_WIE|TCR_WRC(WRC_CHIP)|WDTP(wdt_period)); + val |= (TCR_WIE|TCR_WRC(WRC_CHIP)|WDTP(booke_wdt_period)); mtspr(SPRN_TCR, val); } @@ -108,12 +109,12 @@ static int booke_wdt_ioctl (struct inode *inode, struct file *file, booke_wdt_ping(); return 0; case WDIOC_SETTIMEOUT: - if (get_user(wdt_period, (u32 *) arg)) + if (get_user(booke_wdt_period, (u32 *) arg)) return -EFAULT; - mtspr(SPRN_TCR, (mfspr(SPRN_TCR)&~WDTP(0))|WDTP(wdt_period)); + mtspr(SPRN_TCR, (mfspr(SPRN_TCR)&~WDTP(0))|WDTP(booke_wdt_period)); return 0; case WDIOC_GETTIMEOUT: - return put_user(wdt_period, (u32 *) arg); + return put_user(booke_wdt_period, (u32 *) arg); case WDIOC_SETOPTIONS: if (get_user(tmp, (u32 *) arg)) return -EINVAL; @@ -134,11 +135,11 @@ static int booke_wdt_ioctl (struct inode *inode, struct file *file, */ static int booke_wdt_open (struct inode *inode, struct file *file) { - if (wdt_enable == 0) { - wdt_enable = 1; + if (booke_wdt_enabled == 0) { + booke_wdt_enabled = 1; booke_wdt_enable(); printk (KERN_INFO "PowerPC Book-E Watchdog Timer Enabled (wdt_period=%d)\n", - wdt_period); + booke_wdt_period); } return 0; @@ -180,9 +181,9 @@ static int __init booke_wdt_init(void) return ret; } - if (wdt_enable == 1) { + if (booke_wdt_enabled == 1) { printk (KERN_INFO "PowerPC Book-E Watchdog Timer Enabled (wdt_period=%d)\n", - wdt_period); + booke_wdt_period); booke_wdt_enable(); } diff --git a/include/asm-ppc/system.h b/include/asm-ppc/system.h index 82395f30004..be6557746ab 100644 --- a/include/asm-ppc/system.h +++ b/include/asm-ppc/system.h @@ -87,6 +87,10 @@ extern void cacheable_memzero(void *p, unsigned int nb); extern int do_page_fault(struct pt_regs *, unsigned long, unsigned long); extern void bad_page_fault(struct pt_regs *, unsigned long, int); extern void die(const char *, struct pt_regs *, long); +#ifdef CONFIG_BOOKE_WDT +extern u32 booke_wdt_enabled; +extern u32 booke_wdt_period; +#endif /* CONFIG_BOOKE_WDT */ struct device_node; extern void note_scsi_host(struct device_node *, void *); |