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author | Al Viro <viro@zeniv.linux.org.uk> | 2008-08-18 01:05:42 (GMT) |
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committer | H. Peter Anvin <hpa@zytor.com> | 2008-10-23 05:55:20 (GMT) |
commit | bb8985586b7a906e116db835c64773b7a7d51663 (patch) | |
tree | de93ae58e88cc563d95cc124a73f3930594c6100 /arch/x86/include/asm/numaq/wakecpu.h | |
parent | 8ede0bdb63305d3353efd97e9af6210afb05734e (diff) | |
download | linux-fsl-qoriq-bb8985586b7a906e116db835c64773b7a7d51663.tar.xz |
x86, um: ... and asm-x86 move
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include/asm/numaq/wakecpu.h')
-rw-r--r-- | arch/x86/include/asm/numaq/wakecpu.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/x86/include/asm/numaq/wakecpu.h b/arch/x86/include/asm/numaq/wakecpu.h new file mode 100644 index 0000000..c577bda --- /dev/null +++ b/arch/x86/include/asm/numaq/wakecpu.h @@ -0,0 +1,43 @@ +#ifndef __ASM_NUMAQ_WAKECPU_H +#define __ASM_NUMAQ_WAKECPU_H + +/* This file copes with machines that wakeup secondary CPUs by NMIs */ + +#define WAKE_SECONDARY_VIA_NMI + +#define TRAMPOLINE_LOW phys_to_virt(0x8) +#define TRAMPOLINE_HIGH phys_to_virt(0xa) + +#define boot_cpu_apicid boot_cpu_logical_apicid + +/* We don't do anything here because we use NMI's to boot instead */ +static inline void wait_for_init_deassert(atomic_t *deassert) +{ +} + +/* + * Because we use NMIs rather than the INIT-STARTUP sequence to + * bootstrap the CPUs, the APIC may be in a weird state. Kick it. + */ +static inline void smp_callin_clear_local_apic(void) +{ + clear_local_APIC(); +} + +static inline void store_NMI_vector(unsigned short *high, unsigned short *low) +{ + printk("Storing NMI vector\n"); + *high = *((volatile unsigned short *) TRAMPOLINE_HIGH); + *low = *((volatile unsigned short *) TRAMPOLINE_LOW); +} + +static inline void restore_NMI_vector(unsigned short *high, unsigned short *low) +{ + printk("Restoring NMI vector\n"); + *((volatile unsigned short *) TRAMPOLINE_HIGH) = *high; + *((volatile unsigned short *) TRAMPOLINE_LOW) = *low; +} + +#define inquire_remote_apic(apicid) {} + +#endif /* __ASM_NUMAQ_WAKECPU_H */ |