diff options
| -rw-r--r-- | arch/x86/kernel/crash.c | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/head_32.S | 12 | ||||
| -rw-r--r-- | arch/x86/kernel/hpet.c | 14 | ||||
| -rw-r--r-- | arch/x86/kernel/reboot_32.c | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/reboot_64.c | 4 | ||||
| -rw-r--r-- | include/asm-x86/hpet.h | 1 |
6 files changed, 33 insertions, 6 deletions
diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c index 8bb482ff091b..9a5fa0abfcc7 100644 --- a/arch/x86/kernel/crash.c +++ b/arch/x86/kernel/crash.c @@ -22,6 +22,7 @@ #include <asm/nmi.h> #include <asm/hw_irq.h> #include <asm/apic.h> +#include <asm/hpet.h> #include <linux/kdebug.h> #include <asm/smp.h> @@ -140,5 +141,8 @@ void machine_crash_shutdown(struct pt_regs *regs) #if defined(CONFIG_X86_IO_APIC) disable_IO_APIC(); #endif +#ifdef CONFIG_HPET_TIMER + hpet_disable(); +#endif crash_save_cpu(regs, safe_smp_processor_id()); } diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index 374b7ece8961..ac0637a6d71c 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -193,6 +193,12 @@ default_entry: jb 10b movl %edi,(init_pg_tables_end - __PAGE_OFFSET) + /* Do an early initialization of the fixmap area */ + movl $(swapper_pg_dir - __PAGE_OFFSET), %edx + movl $(swapper_pg_pmd - __PAGE_OFFSET), %eax + addl $0x007, %eax /* 0x007 = PRESENT+RW+USER */ + movl %eax, 4092(%edx) + xorl %ebx,%ebx /* This is the boot CPU (BSP) */ jmp 3f /* @@ -208,12 +214,6 @@ default_entry: .section .init.text,"ax",@progbits #endif - /* Do an early initialization of the fixmap area */ - movl $(swapper_pg_dir - __PAGE_OFFSET), %edx - movl $(swapper_pg_pmd - __PAGE_OFFSET), %eax - addl $0x007, %eax /* 0x007 = PRESENT+RW+USER */ - movl %eax, 4092(%edx) - #ifdef CONFIG_SMP ENTRY(startup_32_smp) cld diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index 53303f2e5475..4a86ffd67ec5 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -446,6 +446,20 @@ static __init int hpet_late_init(void) } fs_initcall(hpet_late_init); +void hpet_disable(void) +{ + if (is_hpet_capable()) { + unsigned long cfg = hpet_readl(HPET_CFG); + + if (hpet_legacy_int_enabled) { + cfg &= ~HPET_CFG_LEGACY; + hpet_legacy_int_enabled = 0; + } + cfg &= ~HPET_CFG_ENABLE; + hpet_writel(cfg, HPET_CFG); + } +} + #ifdef CONFIG_HPET_EMULATE_RTC /* HPET in LegacyReplacement Mode eats up RTC interrupt line. When, HPET diff --git a/arch/x86/kernel/reboot_32.c b/arch/x86/kernel/reboot_32.c index 9e2269d00918..bb1a0f889c5e 100644 --- a/arch/x86/kernel/reboot_32.c +++ b/arch/x86/kernel/reboot_32.c @@ -11,6 +11,7 @@ #include <linux/reboot.h> #include <asm/uaccess.h> #include <asm/apic.h> +#include <asm/hpet.h> #include <asm/desc.h> #include "mach_reboot.h" #include <asm/reboot_fixups.h> @@ -326,6 +327,9 @@ static void native_machine_shutdown(void) #ifdef CONFIG_X86_IO_APIC disable_IO_APIC(); #endif +#ifdef CONFIG_HPET_TIMER + hpet_disable(); +#endif } void __attribute__((weak)) mach_reboot_fixups(void) diff --git a/arch/x86/kernel/reboot_64.c b/arch/x86/kernel/reboot_64.c index 71b13c5f5817..53620a92a8fd 100644 --- a/arch/x86/kernel/reboot_64.c +++ b/arch/x86/kernel/reboot_64.c @@ -17,6 +17,7 @@ #include <asm/pgtable.h> #include <asm/tlbflush.h> #include <asm/apic.h> +#include <asm/hpet.h> #include <asm/gart.h> /* @@ -113,6 +114,9 @@ void machine_shutdown(void) disable_IO_APIC(); +#ifdef CONFIG_HPET_TIMER + hpet_disable(); +#endif local_irq_restore(flags); pci_iommu_shutdown(); diff --git a/include/asm-x86/hpet.h b/include/asm-x86/hpet.h index b1f3c1ea55d9..ad8d6e758785 100644 --- a/include/asm-x86/hpet.h +++ b/include/asm-x86/hpet.h @@ -61,6 +61,7 @@ extern unsigned long force_hpet_address; extern int hpet_force_user; extern int is_hpet_enabled(void); extern int hpet_enable(void); +extern void hpet_disable(void); extern unsigned long hpet_readl(unsigned long a); extern void force_hpet_resume(void); |