| /* 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) |
| { |
| io_apic_irqs = 0; |
| } |
| |
| static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip) |
| { |
| CMOS_WRITE(0xa, 0xf); |
| local_flush_tlb(); |
| Dprintk("1.\n"); |
| *((volatile unsigned short *) TRAMPOLINE_HIGH) = start_eip >> 4; |
| Dprintk("2.\n"); |
| *((volatile unsigned short *) TRAMPOLINE_LOW) = start_eip & 0xf; |
| Dprintk("3.\n"); |
| } |
| |
| 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) |
| { |
| /* |
| * 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(); |
| } |
