static int
acpi_wakeup_ap(struct acpi_softc *sc, int cpu)
{
	int		vector = (WAKECODE_PADDR(sc) >> 12) & 0xff;
	int		apic_id = cpu_apic_ids[cpu];
	int		ms;

	WAKECODE_FIXUP(wakeup_xpcb, struct xpcb *, &stopxpcbs[cpu]);
	WAKECODE_FIXUP(wakeup_gdt, uint16_t, stopxpcbs[cpu].xpcb_gdt.rd_limit);
	WAKECODE_FIXUP(wakeup_gdt + 2, uint64_t,
	    stopxpcbs[cpu].xpcb_gdt.rd_base);
	WAKECODE_FIXUP(wakeup_cpu, int, cpu);

	/* do an INIT IPI: assert RESET */
	lapic_ipi_raw(APIC_DEST_DESTFLD | APIC_TRIGMOD_EDGE |
	    APIC_LEVEL_ASSERT | APIC_DESTMODE_PHY | APIC_DELMODE_INIT, apic_id);

	/* wait for pending status end */
	lapic_ipi_wait(-1);

	/* do an INIT IPI: deassert RESET */
	lapic_ipi_raw(APIC_DEST_ALLESELF | APIC_TRIGMOD_LEVEL |
	    APIC_LEVEL_DEASSERT | APIC_DESTMODE_PHY | APIC_DELMODE_INIT, 0);

	/* wait for pending status end */
	DELAY(10000);		/* wait ~10mS */
	lapic_ipi_wait(-1);

	/*
	 * next we do a STARTUP IPI: the previous INIT IPI might still be
	 * latched, (P5 bug) this 1st STARTUP would then terminate
	 * immediately, and the previously started INIT IPI would continue. OR
	 * the previous INIT IPI has already run. and this STARTUP IPI will
	 * run. OR the previous INIT IPI was ignored. and this STARTUP IPI
	 * will run.
	 */

	/* do a STARTUP IPI */
	lapic_ipi_raw(APIC_DEST_DESTFLD | APIC_TRIGMOD_EDGE |
	    APIC_LEVEL_DEASSERT | APIC_DESTMODE_PHY | APIC_DELMODE_STARTUP |
	    vector, apic_id);
	lapic_ipi_wait(-1);
	DELAY(200);		/* wait ~200uS */

	/*
	 * finally we do a 2nd STARTUP IPI: this 2nd STARTUP IPI should run IF
	 * the previous STARTUP IPI was cancelled by a latched INIT IPI. OR
	 * this STARTUP IPI will be ignored, as only ONE STARTUP IPI is
	 * recognized after hardware RESET or INIT IPI.
	 */

	lapic_ipi_raw(APIC_DEST_DESTFLD | APIC_TRIGMOD_EDGE |
	    APIC_LEVEL_DEASSERT | APIC_DESTMODE_PHY | APIC_DELMODE_STARTUP |
	    vector, apic_id);
	lapic_ipi_wait(-1);
	DELAY(200);		/* wait ~200uS */

	/* Wait up to 5 seconds for it to start. */
	for (ms = 0; ms < 5000; ms++) {
		if (*(int *)(WAKECODE_VADDR(sc) + wakeup_cpu) == 0)
			return (1);	/* return SUCCESS */
		DELAY(1000);
	}
	return (0);		/* return FAILURE */
}
示例#2
0
void
acpi_install_wakeup_handler(struct acpi_softc *sc)
{
	static void	*wakeaddr = NULL;
#ifdef __amd64__
	uint64_t	*pt4, *pt3, *pt2;
	int		i;
#endif

	if (wakeaddr != NULL)
		return;

	wakeaddr = acpi_alloc_wakeup_handler();
	if (wakeaddr == NULL)
		return;

	sc->acpi_wakeaddr = (vm_offset_t)wakeaddr;
	sc->acpi_wakephys = vtophys(wakeaddr);

	bcopy(wakecode, (void *)WAKECODE_VADDR(sc), sizeof(wakecode));

	/* Patch GDT base address, ljmp targets. */
	WAKECODE_FIXUP((bootgdtdesc + 2), uint32_t,
	    WAKECODE_PADDR(sc) + bootgdt);
	WAKECODE_FIXUP((wakeup_sw32 + 2), uint32_t,
	    WAKECODE_PADDR(sc) + wakeup_32);
#ifdef __amd64__
	WAKECODE_FIXUP((wakeup_sw64 + 1), uint32_t,
	    WAKECODE_PADDR(sc) + wakeup_64);
	WAKECODE_FIXUP(wakeup_pagetables, uint32_t, sc->acpi_wakephys);
#endif

	/* Save pointers to some global data. */
	WAKECODE_FIXUP(wakeup_ret, void *, resumectx);
#ifndef __amd64__
#ifdef PAE
	WAKECODE_FIXUP(wakeup_cr3, register_t, vtophys(kernel_pmap->pm_pdpt));
#else
	WAKECODE_FIXUP(wakeup_cr3, register_t, vtophys(kernel_pmap->pm_pdir));
#endif

#else
	/* Build temporary page tables below realmode code. */
	pt4 = wakeaddr;
	pt3 = pt4 + (PAGE_SIZE) / sizeof(uint64_t);
	pt2 = pt3 + (PAGE_SIZE) / sizeof(uint64_t);

	/* Create the initial 1GB replicated page tables */
	for (i = 0; i < 512; i++) {
		/*
		 * Each slot of the level 4 pages points
		 * to the same level 3 page
		 */
		pt4[i] = (uint64_t)(sc->acpi_wakephys + PAGE_SIZE);
		pt4[i] |= PG_V | PG_RW | PG_U;

		/*
		 * Each slot of the level 3 pages points
		 * to the same level 2 page
		 */
		pt3[i] = (uint64_t)(sc->acpi_wakephys + (2 * PAGE_SIZE));
		pt3[i] |= PG_V | PG_RW | PG_U;

		/* The level 2 page slots are mapped with 2MB pages for 1GB. */
		pt2[i] = i * (2 * 1024 * 1024);
		pt2[i] |= PG_V | PG_RW | PG_PS | PG_U;
	}
#endif

	if (bootverbose)
		device_printf(sc->acpi_dev, "wakeup code va %#jx pa %#jx\n",
		    (uintmax_t)sc->acpi_wakeaddr, (uintmax_t)sc->acpi_wakephys);
}
示例#3
0
void
acpi_install_wakeup_handler(struct acpi_softc *sc)
{
	static void	*wakeaddr = NULL;
	uint64_t	*pt4, *pt3, *pt2;
	int		i;

	if (wakeaddr != NULL)
		return;

	wakeaddr = acpi_alloc_wakeup_handler();
	if (wakeaddr == NULL)
		return;

	sc->acpi_wakeaddr = (vm_offset_t)wakeaddr;
	sc->acpi_wakephys = vtophys(wakeaddr);

	bcopy(wakecode, (void *)WAKECODE_VADDR(sc), sizeof(wakecode));

	/* Patch GDT base address, ljmp targets and page table base address. */
	WAKECODE_FIXUP((bootgdtdesc + 2), uint32_t,
	    WAKECODE_PADDR(sc) + bootgdt);
	WAKECODE_FIXUP((wakeup_sw32 + 2), uint32_t,
	    WAKECODE_PADDR(sc) + wakeup_32);
	WAKECODE_FIXUP((wakeup_sw64 + 1), uint32_t,
	    WAKECODE_PADDR(sc) + wakeup_64);
	WAKECODE_FIXUP(wakeup_pagetables, uint32_t, sc->acpi_wakephys);

	/* Save pointers to some global data. */
	WAKECODE_FIXUP(wakeup_retaddr, void *, acpi_restorecpu);
	WAKECODE_FIXUP(wakeup_kpml4, uint64_t, KPML4phys);
	WAKECODE_FIXUP(wakeup_ctx, vm_offset_t,
	    WAKECODE_VADDR(sc) + wakeup_ctx);
	WAKECODE_FIXUP(wakeup_efer, uint64_t, rdmsr(MSR_EFER));
	WAKECODE_FIXUP(wakeup_star, uint64_t, rdmsr(MSR_STAR));
	WAKECODE_FIXUP(wakeup_lstar, uint64_t, rdmsr(MSR_LSTAR));
	WAKECODE_FIXUP(wakeup_cstar, uint64_t, rdmsr(MSR_CSTAR));
	WAKECODE_FIXUP(wakeup_sfmask, uint64_t, rdmsr(MSR_SF_MASK));
	WAKECODE_FIXUP(wakeup_xsmask, uint64_t, xsave_mask);

	/* Build temporary page tables below realmode code. */
	pt4 = wakeaddr;
	pt3 = pt4 + (PAGE_SIZE) / sizeof(uint64_t);
	pt2 = pt3 + (PAGE_SIZE) / sizeof(uint64_t);

	/* Create the initial 1GB replicated page tables */
	for (i = 0; i < 512; i++) {
		/*
		 * Each slot of the level 4 pages points
		 * to the same level 3 page
		 */
		pt4[i] = (uint64_t)(sc->acpi_wakephys + PAGE_SIZE);
		pt4[i] |= PG_V | PG_RW | PG_U;

		/*
		 * Each slot of the level 3 pages points
		 * to the same level 2 page
		 */
		pt3[i] = (uint64_t)(sc->acpi_wakephys + (2 * PAGE_SIZE));
		pt3[i] |= PG_V | PG_RW | PG_U;

		/* The level 2 page slots are mapped with 2MB pages for 1GB. */
		pt2[i] = i * (2 * 1024 * 1024);
		pt2[i] |= PG_V | PG_RW | PG_PS | PG_U;
	}

	if (bootverbose)
		device_printf(sc->acpi_dev, "wakeup code va %p pa %p\n",
		    (void *)sc->acpi_wakeaddr, (void *)sc->acpi_wakephys);
}