1 /* two abstractions specific to kernel/smpboot.c, mainly to cater to visws
2 * which needs to alter them. */
3
4 static inline void smpboot_clear_io_apic_irqs(void)
5 {
6 io_apic_irqs = 0;
7 }
8
9 static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
10 {
11 CMOS_WRITE(0xa, 0xf);
12 local_flush_tlb();
13 Dprintk("1.\n");
14 *((volatile unsigned short *) TRAMPOLINE_HIGH) = start_eip >> 4;
15 Dprintk("2.\n");
16 *((volatile unsigned short *) TRAMPOLINE_LOW) = start_eip & 0xf;
17 Dprintk("3.\n");
18 }
19
20 static inline void smpboot_restore_warm_reset_vector(void)
21 {
22 /*
23 * Install writable page 0 entry to set BIOS data area.
24 */
25 local_flush_tlb();
26
27 /*
28 * Paranoid: Set warm reset code and vector here back
29 * to default values.
30 */
31 CMOS_WRITE(0, 0xf);
32
33 *((volatile long *) phys_to_virt(0x467)) = 0;
34 }
35
36 static inline void smpboot_setup_io_apic(void)
37 {
38 /*
39 * Here we can be sure that there is an IO-APIC in the system. Let's
40 * go and set it up:
41 */
42 if (!skip_ioapic_setup && nr_ioapics)
43 setup_IO_APIC();
44 }
45
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