Esempio n. 1
0
void southbridge_clear_smi_status(void)
{
	/* Clear SMI status */
	reset_smi_status();

	/* Clear PM1 status */
	reset_pm1_status();

	/* Set EOS bit so other SMIs can occur. */
 	smi_set_eos();
}
Esempio n. 2
0
File: smi.c Progetto: 0ida/coreboot
static void smm_relocate(void)
{
	u32 smi_en;

	printk(BIOS_DEBUG, "Initializing SMM handler...");

	pmbase = pci_read_config16(dev_find_slot(0, PCI_DEVFN(0x1f, 0)), 0x40) & 0xfffc;
	printk(BIOS_SPEW, " ... pmbase = 0x%04x\n", pmbase);

	smi_en = inl(pmbase + SMI_EN);
	if (smi_en & APMC_EN) {
		printk(BIOS_INFO, "SMI# handler already enabled?\n");
		return;
	}

	/* copy the SMM relocation code */
	memcpy((void *)0x38000, &smm_relocation_start,
			&smm_relocation_end - &smm_relocation_start);

	printk(BIOS_DEBUG, "\n");
	dump_smi_status(reset_smi_status());
	dump_pm1_status(reset_pm1_status());
	dump_gpe0_status(reset_gpe0_status());
	dump_tco_status(reset_tco_status());

	/* Enable SMI generation:
	 *  - on TCO events
	 *  - on APMC writes (io 0xb2)
	 *  - on writes to SLP_EN (sleep states)
	 *  - on writes to GBL_RLS (bios commands)
	 * No SMIs:
	 *  - on microcontroller writes (io 0x62/0x66)
	 */
	outl(smi_en | (TCO_EN | APMC_EN | SLP_SMI_EN | BIOS_EN |
				EOS | GBL_SMI_EN), pmbase + SMI_EN);

	/**
	 * There are several methods of raising a controlled SMI# via
	 * software, among them:
	 *  - Writes to io 0xb2 (APMC)
	 *  - Writes to the Local Apic ICR with Delivery mode SMI.
	 *
	 * Using the local apic is a bit more tricky. According to
	 * AMD Family 11 Processor BKDG no destination shorthand must be
	 * used.
	 * The whole SMM initialization is quite a bit hardware specific, so
	 * I'm not too worried about the better of the methods at the moment
	 */

	/* raise an SMI interrupt */
	printk(BIOS_SPEW, "  ... raise SMI#\n");
	outb(0x00, 0xb2);
}
Esempio n. 3
0
static void southbridge_smi_pm1(unsigned int node, smm_state_save_area_t *state_save)
{
	u16 pm1_sts;
	volatile u8 cmos_status;

	pm1_sts = reset_pm1_status();
	dump_pm1_status(pm1_sts);

	/* While OSPM is not active, poweroff immediately
	 * on a power button event.
	 */
	if (pm1_sts & PWRBTN_STS) {
		// power button pressed
		u32 reg32;
		reg32 = (7 << 10) | (1 << 13);
		outl(reg32, pmbase + PM1_CNT);
	}

	if (pm1_sts & RTC_STS) {
		/* read RTC status register to disable the interrupt */
		cmos_status = cmos_read(RTC_REG_C);
		printk(BIOS_DEBUG, "RTC IRQ status: %02X\n", cmos_status);
	}
}
Esempio n. 4
0
static void smm_relocate(void)
{
	u32 smi_en;
	u16 pm1_en;

	printk(BIOS_DEBUG, "Initializing SMM handler...");

	pmbase = pci_read_config16(dev_find_slot(0, PCI_DEVFN(0x1f, 0)), D31F0_PMBASE) & 0xfffc;
	printk(BIOS_SPEW, " ... pmbase = 0x%04x\n", pmbase);

	smi_en = inl(pmbase + SMI_EN);
	if (smi_en & GBL_SMI_EN) {
		printk(BIOS_INFO, "SMI# handler already enabled?\n");
		return;
	}

	/* copy the SMM relocation code */
	memcpy((void *)0x38000, &smm_relocation_start,
			&smm_relocation_end - &smm_relocation_start);
	wbinvd();

	printk(BIOS_DEBUG, "\n");
	dump_smi_status(reset_smi_status());
	dump_pm1_status(reset_pm1_status());
	dump_gpe0_status(reset_gpe0_status());
	dump_alt_gp_smi_status(reset_alt_gp_smi_status());
	dump_tco_status(reset_tco_status());

	/* Enable SMI generation:
	 *  - on TCO events
	 *  - on APMC writes (io 0xb2)
	 *  - on writes to GBL_RLS (bios commands)
	 * No SMIs:
	 *  - on microcontroller writes (io 0x62/0x66)
	 */

	smi_en = 0; /* reset SMI enables */

	smi_en |= TCO_EN;
	smi_en |= APMC_EN;
#if DEBUG_PERIODIC_SMIS
	/* Set DEBUG_PERIODIC_SMIS in i82801ix.h to debug using
	 * periodic SMIs.
	 */
	smi_en |= PERIODIC_EN;
#endif
	smi_en |= BIOS_EN;

	/* The following need to be on for SMIs to happen */
	smi_en |= EOS | GBL_SMI_EN;

	outl(smi_en, pmbase + SMI_EN);

	pm1_en = 0;
	pm1_en |= PWRBTN_EN;
	pm1_en |= GBL_EN;
	outw(pm1_en, pmbase + PM1_EN);

	/**
	 * There are several methods of raising a controlled SMI# via
	 * software, among them:
	 *  - Writes to io 0xb2 (APMC)
	 *  - Writes to the Local Apic ICR with Delivery mode SMI.
	 *
	 * Using the local apic is a bit more tricky. According to
	 * AMD Family 11 Processor BKDG no destination shorthand must be
	 * used.
	 * The whole SMM initialization is quite a bit hardware specific, so
	 * I'm not too worried about the better of the methods at the moment
	 */

	/* raise an SMI interrupt */
	printk(BIOS_SPEW, "  ... raise SMI#\n");
	outb(0x00, 0xb2);
}
Esempio n. 5
0
uint16_t clear_pm1_status(void)
{
	return print_pm1_status(reset_pm1_status());
}
Esempio n. 6
0
void southbridge_smm_init(void)
{
	u32 smi_en;
	u16 pm1_en;
	u32 gpe0_en;

#if CONFIG_ELOG
	/* Log events from chipset before clearing */
	pch_log_state();
#endif

	printk(BIOS_DEBUG, "Initializing southbridge SMI...");

	pmbase = pci_read_config32(PCI_DEV(0, 0x1f, 0),
				   PMBASE) & 0xff80;

	printk(BIOS_SPEW, " ... pmbase = 0x%04x\n", pmbase);

	smi_en = inl(pmbase + SMI_EN);
	if (smi_en & APMC_EN) {
		printk(BIOS_INFO, "SMI# handler already enabled?\n");
		return;
	}

	printk(BIOS_DEBUG, "\n");
	dump_smi_status(reset_smi_status());
	dump_pm1_status(reset_pm1_status());
	dump_gpe0_status(reset_gpe0_status());
	dump_alt_gp_smi_status(reset_alt_gp_smi_status());
	dump_tco_status(reset_tco_status());

	/* Disable GPE0 PME_B0 */
	gpe0_en = inl(pmbase + GPE0_EN);
	gpe0_en &= ~PME_B0_EN;
	outl(gpe0_en, pmbase + GPE0_EN);

	pm1_en = 0;
	pm1_en |= PWRBTN_EN;
	pm1_en |= GBL_EN;
	outw(pm1_en, pmbase + PM1_EN);

	/* Enable SMI generation:
	 *  - on TCO events
	 *  - on APMC writes (io 0xb2)
	 *  - on writes to SLP_EN (sleep states)
	 *  - on writes to GBL_RLS (bios commands)
	 * No SMIs:
	 *  - on microcontroller writes (io 0x62/0x66)
	 */

	smi_en = 0; /* reset SMI enables */

#if 0
	smi_en |= LEGACY_USB2_EN | LEGACY_USB_EN;
#endif
	smi_en |= TCO_EN;
	smi_en |= APMC_EN;
#if DEBUG_PERIODIC_SMIS
	/* Set DEBUG_PERIODIC_SMIS in pch.h to debug using
	 * periodic SMIs.
	 */
	smi_en |= PERIODIC_EN;
#endif
	smi_en |= SLP_SMI_EN;
#if 0
	smi_en |= BIOS_EN;
#endif

	/* The following need to be on for SMIs to happen */
	smi_en |= EOS | GBL_SMI_EN;

	outl(smi_en, pmbase + SMI_EN);
}