diff options
Diffstat (limited to 'include/asm-x86')
| -rw-r--r-- | include/asm-x86/mach-visws/smpboot_hooks.h | 45 |
1 files changed, 38 insertions, 7 deletions
diff --git a/include/asm-x86/mach-visws/smpboot_hooks.h b/include/asm-x86/mach-visws/smpboot_hooks.h index c9b83e395a2..56d001b9dce 100644 --- a/include/asm-x86/mach-visws/smpboot_hooks.h +++ b/include/asm-x86/mach-visws/smpboot_hooks.h @@ -1,3 +1,13 @@ +/* two abstractions specific to kernel/smpboot.c, mainly to cater to visws + * which needs to alter them. */ + +static inline void smpboot_clear_io_apic_irqs(void) +{ +#ifdef CONFIG_X86_IO_APIC + io_apic_irqs = 0; +#endif +} + static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip) { CMOS_WRITE(0xa, 0xf); @@ -9,20 +19,41 @@ static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip) Dprintk("3.\n"); } -/* for visws do nothing for any of these */ - -static inline void smpboot_clear_io_apic_irqs(void) -{ -} - static inline void smpboot_restore_warm_reset_vector(void) { + /* + * Install writable page 0 entry to set BIOS data area. + */ + local_flush_tlb(); + + /* + * Paranoid: Set warm reset code and vector here back + * to default values. + */ + CMOS_WRITE(0, 0xf); + + *((volatile long *) phys_to_virt(0x467)) = 0; } -static inline void smpboot_setup_io_apic(void) +static inline void __init smpboot_setup_io_apic(void) { +#ifdef CONFIG_X86_IO_APIC + /* + * Here we can be sure that there is an IO-APIC in the system. Let's + * go and set it up: + */ + if (!skip_ioapic_setup && nr_ioapics) + setup_IO_APIC(); + else { + nr_ioapics = 0; + localise_nmi_watchdog(); + } +#endif } static inline void smpboot_clear_io_apic(void) { +#ifdef CONFIG_X86_IO_APIC + nr_ioapics = 0; +#endif } |