Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __ASM_MACH_WAKECPU_H |
| 2 | #define __ASM_MACH_WAKECPU_H |
| 3 | |
| 4 | /* This file copes with machines that wakeup secondary CPUs by NMIs */ |
| 5 | |
| 6 | #define WAKE_SECONDARY_VIA_NMI |
| 7 | |
| 8 | #define TRAMPOLINE_LOW phys_to_virt(0x8) |
| 9 | #define TRAMPOLINE_HIGH phys_to_virt(0xa) |
| 10 | |
| 11 | #define boot_cpu_apicid boot_cpu_logical_apicid |
| 12 | |
| 13 | /* We don't do anything here because we use NMI's to boot instead */ |
| 14 | static inline void wait_for_init_deassert(atomic_t *deassert) |
| 15 | { |
| 16 | } |
| 17 | |
| 18 | /* |
| 19 | * Because we use NMIs rather than the INIT-STARTUP sequence to |
| 20 | * bootstrap the CPUs, the APIC may be in a weird state. Kick it. |
| 21 | */ |
| 22 | static inline void smp_callin_clear_local_apic(void) |
| 23 | { |
| 24 | clear_local_APIC(); |
| 25 | } |
| 26 | |
| 27 | static inline void store_NMI_vector(unsigned short *high, unsigned short *low) |
| 28 | { |
| 29 | printk("Storing NMI vector\n"); |
| 30 | *high = *((volatile unsigned short *) TRAMPOLINE_HIGH); |
| 31 | *low = *((volatile unsigned short *) TRAMPOLINE_LOW); |
| 32 | } |
| 33 | |
| 34 | static inline void restore_NMI_vector(unsigned short *high, unsigned short *low) |
| 35 | { |
| 36 | printk("Restoring NMI vector\n"); |
| 37 | *((volatile unsigned short *) TRAMPOLINE_HIGH) = *high; |
| 38 | *((volatile unsigned short *) TRAMPOLINE_LOW) = *low; |
| 39 | } |
| 40 | |
| 41 | #define inquire_remote_apic(apicid) {} |
| 42 | |
| 43 | #endif /* __ASM_MACH_WAKECPU_H */ |