1164dd0099
We are getting rid of subarchitecture support - move the hook files to asm/. (These are now stale and should be replaced with more explicit runtime mechanisms - but the transition is simpler this way.) Signed-off-by: Ingo Molnar <mingo@elte.hu>
62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
/* 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);
|
|
local_flush_tlb();
|
|
pr_debug("1.\n");
|
|
*((volatile unsigned short *)phys_to_virt(apic->trampoline_phys_high)) =
|
|
start_eip >> 4;
|
|
pr_debug("2.\n");
|
|
*((volatile unsigned short *)phys_to_virt(apic->trampoline_phys_low)) =
|
|
start_eip & 0xf;
|
|
pr_debug("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(apic->trampoline_phys_low)) = 0;
|
|
}
|
|
|
|
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
|
|
}
|