sb/intel/common: Add common code for SMM setup and smihandler

This moves the sandybridge both smm setup and smihandler code to a
common place.

Tested on Thinkpad X220, still boots, resume to and from S3 is fine
so smihandler is still working fine.

Change-Id: I28e2e6ad1e95a9e14462a456726a144ccdc63ec9
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/23427
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

1 files changed, 23 insertions, 659 deletions

diff --git a/src/southbridge/intel/bd82x6x/smihandler.c b/src/southbridge/intel/bd82x6x/smihandler.c
index bf72b5e324..e2ff851e42 100644
--- a/src/southbridge/intel/bd82x6x/smihandler.c
+++ b/src/southbridge/intel/bd82x6x/smihandler.c
@@ -33,214 +33,14 @@
 #include <southbridge/intel/bd82x6x/me.h>
 #include <southbridge/intel/common/gpio.h>
 #include <cpu/intel/model_206ax/model_206ax.h>
+#include <southbridge/intel/common/pmutil.h>
 
-/* While we read PMBASE dynamically in case it changed, let's
- * initialize it with a sane value
- */
-static u16 pmbase = DEFAULT_PMBASE;
-u16 smm_get_pmbase(void)
-{
-	return pmbase;
-}
-
-static u8 smm_initialized = 0;
-
-/* GNVS needs to be updated by an 0xEA PM Trap (B2) after it has been located
- * by coreboot.
- */
 static global_nvs_t *gnvs;
 global_nvs_t *smm_get_gnvs(void)
 {
 	return gnvs;
 }
 
-static void alt_gpi_mask(u16 clr, u16 set)
-{
-	u16 alt_gp = inw(pmbase + ALT_GP_SMI_EN);
-	alt_gp &= ~clr;
-	alt_gp |= set;
-	outw(alt_gp, pmbase + ALT_GP_SMI_EN);
-}
-
-static void gpe0_mask(u32 clr, u32 set)
-{
-	u32 gpe0 = inl(pmbase + GPE0_EN);
-	gpe0 &= ~clr;
-	gpe0 |= set;
-	outl(gpe0, pmbase + GPE0_EN);
-}
-
-void gpi_route_interrupt(u8 gpi, u8 mode)
-{
-	u32 gpi_rout;
-	if (gpi >= 16)
-		return;
-
-	alt_gpi_mask(1 << gpi, 0);
-	gpe0_mask(1 << (gpi+16), 0);
-
-	gpi_rout = pci_read_config32(PCI_DEV(0, 0x1f, 0), GPIO_ROUT);
-	gpi_rout &= ~(3 << (2 * gpi));
-	gpi_rout |= ((mode & 3) << (2 * gpi));
-	pci_write_config32(PCI_DEV(0, 0x1f, 0), GPIO_ROUT, gpi_rout);
-
-	if (mode == GPI_IS_SCI)
-		gpe0_mask(0, 1 << (gpi+16));
-	else if (mode == GPI_IS_SMI)
-		alt_gpi_mask(0, 1 << gpi);
-}
-
-/**
- * @brief read and clear PM1_STS
- * @return PM1_STS register
- */
-static u16 reset_pm1_status(void)
-{
-	u16 reg16;
-
-	reg16 = inw(pmbase + PM1_STS);
-	/* set status bits are cleared by writing 1 to them */
-	outw(reg16, pmbase + PM1_STS);
-
-	return reg16;
-}
-
-static void dump_pm1_status(u16 pm1_sts)
-{
-	printk(BIOS_SPEW, "PM1_STS: ");
-	if (pm1_sts & (1 << 15)) printk(BIOS_SPEW, "WAK ");
-	if (pm1_sts & (1 << 14)) printk(BIOS_SPEW, "PCIEXPWAK ");
-	if (pm1_sts & (1 << 11)) printk(BIOS_SPEW, "PRBTNOR ");
-	if (pm1_sts & (1 << 10)) printk(BIOS_SPEW, "RTC ");
-	if (pm1_sts & (1 <<  8)) printk(BIOS_SPEW, "PWRBTN ");
-	if (pm1_sts & (1 <<  5)) printk(BIOS_SPEW, "GBL ");
-	if (pm1_sts & (1 <<  4)) printk(BIOS_SPEW, "BM ");
-	if (pm1_sts & (1 <<  0)) printk(BIOS_SPEW, "TMROF ");
-	printk(BIOS_SPEW, "\n");
-	int reg16 = inw(pmbase + PM1_EN);
-	printk(BIOS_SPEW, "PM1_EN: %x\n", reg16);
-}
-
-/**
- * @brief read and clear SMI_STS
- * @return SMI_STS register
- */
-static u32 reset_smi_status(void)
-{
-	u32 reg32;
-
-	reg32 = inl(pmbase + SMI_STS);
-	/* set status bits are cleared by writing 1 to them */
-	outl(reg32, pmbase + SMI_STS);
-
-	return reg32;
-}
-
-static void dump_smi_status(u32 smi_sts)
-{
-	printk(BIOS_DEBUG, "SMI_STS: ");
-	if (smi_sts & (1 << 26)) printk(BIOS_DEBUG, "SPI ");
-	if (smi_sts & (1 << 21)) printk(BIOS_DEBUG, "MONITOR ");
-	if (smi_sts & (1 << 20)) printk(BIOS_DEBUG, "PCI_EXP_SMI ");
-	if (smi_sts & (1 << 18)) printk(BIOS_DEBUG, "INTEL_USB2 ");
-	if (smi_sts & (1 << 17)) printk(BIOS_DEBUG, "LEGACY_USB2 ");
-	if (smi_sts & (1 << 16)) printk(BIOS_DEBUG, "SMBUS_SMI ");
-	if (smi_sts & (1 << 15)) printk(BIOS_DEBUG, "SERIRQ_SMI ");
-	if (smi_sts & (1 << 14)) printk(BIOS_DEBUG, "PERIODIC ");
-	if (smi_sts & (1 << 13)) printk(BIOS_DEBUG, "TCO ");
-	if (smi_sts & (1 << 12)) printk(BIOS_DEBUG, "DEVMON ");
-	if (smi_sts & (1 << 11)) printk(BIOS_DEBUG, "MCSMI ");
-	if (smi_sts & (1 << 10)) printk(BIOS_DEBUG, "GPI ");
-	if (smi_sts & (1 <<  9)) printk(BIOS_DEBUG, "GPE0 ");
-	if (smi_sts & (1 <<  8)) printk(BIOS_DEBUG, "PM1 ");
-	if (smi_sts & (1 <<  6)) printk(BIOS_DEBUG, "SWSMI_TMR ");
-	if (smi_sts & (1 <<  5)) printk(BIOS_DEBUG, "APM ");
-	if (smi_sts & (1 <<  4)) printk(BIOS_DEBUG, "SLP_SMI ");
-	if (smi_sts & (1 <<  3)) printk(BIOS_DEBUG, "LEGACY_USB ");
-	if (smi_sts & (1 <<  2)) printk(BIOS_DEBUG, "BIOS ");
-	printk(BIOS_DEBUG, "\n");
-}
-
-
-/**
- * @brief read and clear GPE0_STS
- * @return GPE0_STS register
- */
-static u32 reset_gpe0_status(void)
-{
-	u32 reg32;
-
-	reg32 = inl(pmbase + GPE0_STS);
-	/* set status bits are cleared by writing 1 to them */
-	outl(reg32, pmbase + GPE0_STS);
-
-	return reg32;
-}
-
-static void dump_gpe0_status(u32 gpe0_sts)
-{
-	int i;
-	printk(BIOS_DEBUG, "GPE0_STS: ");
-	for (i=31; i>= 16; i--) {
-		if (gpe0_sts & (1 << i)) printk(BIOS_DEBUG, "GPIO%d ", (i-16));
-	}
-	if (gpe0_sts & (1 << 14)) printk(BIOS_DEBUG, "USB4 ");
-	if (gpe0_sts & (1 << 13)) printk(BIOS_DEBUG, "PME_B0 ");
-	if (gpe0_sts & (1 << 12)) printk(BIOS_DEBUG, "USB3 ");
-	if (gpe0_sts & (1 << 11)) printk(BIOS_DEBUG, "PME ");
-	if (gpe0_sts & (1 << 10)) printk(BIOS_DEBUG, "BATLOW ");
-	if (gpe0_sts & (1 <<  9)) printk(BIOS_DEBUG, "PCI_EXP ");
-	if (gpe0_sts & (1 <<  8)) printk(BIOS_DEBUG, "RI ");
-	if (gpe0_sts & (1 <<  7)) printk(BIOS_DEBUG, "SMB_WAK ");
-	if (gpe0_sts & (1 <<  6)) printk(BIOS_DEBUG, "TCO_SCI ");
-	if (gpe0_sts & (1 <<  5)) printk(BIOS_DEBUG, "AC97 ");
-	if (gpe0_sts & (1 <<  4)) printk(BIOS_DEBUG, "USB2 ");
-	if (gpe0_sts & (1 <<  3)) printk(BIOS_DEBUG, "USB1 ");
-	if (gpe0_sts & (1 <<  2)) printk(BIOS_DEBUG, "SWGPE ");
-	if (gpe0_sts & (1 <<  1)) printk(BIOS_DEBUG, "HOTPLUG ");
-	if (gpe0_sts & (1 <<  0)) printk(BIOS_DEBUG, "THRM ");
-	printk(BIOS_DEBUG, "\n");
-}
-
-
-/**
- * @brief read and clear TCOx_STS
- * @return TCOx_STS registers
- */
-static u32 reset_tco_status(void)
-{
-	u32 tcobase = pmbase + 0x60;
-	u32 reg32;
-
-	reg32 = inl(tcobase + 0x04);
-	/* set status bits are cleared by writing 1 to them */
-	outl(reg32 & ~(1<<18), tcobase + 0x04); //  Don't clear BOOT_STS before SECOND_TO_STS
-	if (reg32 & (1 << 18))
-		outl(reg32 & (1<<18), tcobase + 0x04); // clear BOOT_STS
-
-	return reg32;
-}
-
-
-static void dump_tco_status(u32 tco_sts)
-{
-	printk(BIOS_DEBUG, "TCO_STS: ");
-	if (tco_sts & (1 << 20)) printk(BIOS_DEBUG, "SMLINK_SLV ");
-	if (tco_sts & (1 << 18)) printk(BIOS_DEBUG, "BOOT ");
-	if (tco_sts & (1 << 17)) printk(BIOS_DEBUG, "SECOND_TO ");
-	if (tco_sts & (1 << 16)) printk(BIOS_DEBUG, "INTRD_DET ");
-	if (tco_sts & (1 << 12)) printk(BIOS_DEBUG, "DMISERR ");
-	if (tco_sts & (1 << 10)) printk(BIOS_DEBUG, "DMISMI ");
-	if (tco_sts & (1 <<  9)) printk(BIOS_DEBUG, "DMISCI ");
-	if (tco_sts & (1 <<  8)) printk(BIOS_DEBUG, "BIOSWR ");
-	if (tco_sts & (1 <<  7)) printk(BIOS_DEBUG, "NEWCENTURY ");
-	if (tco_sts & (1 <<  3)) printk(BIOS_DEBUG, "TIMEOUT ");
-	if (tco_sts & (1 <<  2)) printk(BIOS_DEBUG, "TCO_INT ");
-	if (tco_sts & (1 <<  1)) printk(BIOS_DEBUG, "SW_TCO ");
-	if (tco_sts & (1 <<  0)) printk(BIOS_DEBUG, "NMI2SMI ");
-	printk(BIOS_DEBUG, "\n");
-}
-
 int southbridge_io_trap_handler(int smif)
 {
 	switch (smif) {
@@ -258,53 +58,6 @@ int southbridge_io_trap_handler(int smif)
 	return 0;
 }
 
-/**
- * @brief Set the EOS bit
- */
-void southbridge_smi_set_eos(void)
-{
-	u8 reg8;
-
-	reg8 = inb(pmbase + SMI_EN);
-	reg8 |= EOS;
-	outb(reg8, pmbase + SMI_EN);
-}
-
-static void busmaster_disable_on_bus(int bus)
-{
-	int slot, func;
-	unsigned int val;
-	unsigned char hdr;
-
-	for (slot = 0; slot < 0x20; slot++) {
-		for (func = 0; func < 8; func++) {
-			u32 reg32;
-			pci_devfn_t dev = PCI_DEV(bus, slot, func);
-
-			val = pci_read_config32(dev, PCI_VENDOR_ID);
-
-			if (val == 0xffffffff || val == 0x00000000 ||
-			    val == 0x0000ffff || val == 0xffff0000)
-				continue;
-
-			/* Disable Bus Mastering for this one device */
-			reg32 = pci_read_config32(dev, PCI_COMMAND);
-			reg32 &= ~PCI_COMMAND_MASTER;
-			pci_write_config32(dev, PCI_COMMAND, reg32);
-
-			/* If this is a bridge, then follow it. */
-			hdr = pci_read_config8(dev, PCI_HEADER_TYPE);
-			hdr &= 0x7f;
-			if (hdr == PCI_HEADER_TYPE_BRIDGE ||
-			    hdr == PCI_HEADER_TYPE_CARDBUS) {
-				unsigned int buses;
-				buses = pci_read_config32(dev, PCI_PRIMARY_BUS);
-				busmaster_disable_on_bus((buses >> 8) & 0xff);
-			}
-		}
-	}
-}
-
 static void southbridge_gate_memory_reset_real(int offset,
 					       u16 use, u16 io, u16 lvl)
 {
@@ -336,7 +89,7 @@ static void southbridge_gate_memory_reset_real(int offset,
  * Intel reference designs all use GPIO 60 but it is
  * not a requirement and boards could use a different pin.
  */
-static void southbridge_gate_memory_reset(void)
+void southbridge_gate_memory_reset(void)
 {
 	u16 gpiobase;
 
@@ -401,348 +154,7 @@ static void xhci_sleep(u8 slp_typ)
 	}
 }
 
-
-static void southbridge_smi_sleep(void)
-{
-	u8 reg8;
-	u32 reg32;
-	u8 slp_typ;
-	u8 s5pwr = CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL;
-
-	// save and recover RTC port values
-	u8 tmp70, tmp72;
-	tmp70 = inb(0x70);
-	tmp72 = inb(0x72);
-	get_option(&s5pwr, "power_on_after_fail");
-	outb(tmp70, 0x70);
-	outb(tmp72, 0x72);
-
-	/* First, disable further SMIs */
-	reg8 = inb(pmbase + SMI_EN);
-	reg8 &= ~SLP_SMI_EN;
-	outb(reg8, pmbase + SMI_EN);
-
-	/* Figure out SLP_TYP */
-	reg32 = inl(pmbase + PM1_CNT);
-	printk(BIOS_SPEW, "SMI#: SLP = 0x%08x\n", reg32);
-	slp_typ = acpi_sleep_from_pm1(reg32);
-
-	if (smm_get_gnvs()->xhci)
-		xhci_sleep(slp_typ);
-
-	/* Do any mainboard sleep handling */
-	mainboard_smi_sleep(slp_typ);
-
-#if IS_ENABLED(CONFIG_ELOG_GSMI)
-	/* Log S3, S4, and S5 entry */
-	if (slp_typ >= ACPI_S3)
-		elog_add_event_byte(ELOG_TYPE_ACPI_ENTER, slp_typ);
-#endif
-
-	/* Next, do the deed.
-	 */
-
-	switch (slp_typ) {
-	case ACPI_S0: printk(BIOS_DEBUG, "SMI#: Entering S0 (On)\n"); break;
-	case ACPI_S1: printk(BIOS_DEBUG, "SMI#: Entering S1 (Assert STPCLK#)\n"); break;
-	case ACPI_S3:
-		printk(BIOS_DEBUG, "SMI#: Entering S3 (Suspend-To-RAM)\n");
-
-		/* Gate memory reset */
-		southbridge_gate_memory_reset();
-
-		/* Invalidate the cache before going to S3 */
-		wbinvd();
-		break;
-	case ACPI_S4: printk(BIOS_DEBUG, "SMI#: Entering S4 (Suspend-To-Disk)\n"); break;
-	case ACPI_S5:
-		printk(BIOS_DEBUG, "SMI#: Entering S5 (Soft Power off)\n");
-
-		outl(0, pmbase + GPE0_EN);
-
-		/* Always set the flag in case CMOS was changed on runtime. For
-		 * "KEEP", switch to "OFF" - KEEP is software emulated
-		 */
-		reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), GEN_PMCON_3);
-		if (s5pwr == MAINBOARD_POWER_ON) {
-			reg8 &= ~1;
-		} else {
-			reg8 |= 1;
-		}
-		pci_write_config8(PCI_DEV(0, 0x1f, 0), GEN_PMCON_3, reg8);
-
-		/* also iterates over all bridges on bus 0 */
-		busmaster_disable_on_bus(0);
-		break;
-	default: printk(BIOS_DEBUG, "SMI#: ERROR: SLP_TYP reserved\n"); break;
-	}
-
-	/* Write back to the SLP register to cause the originally intended
-	 * event again. We need to set BIT13 (SLP_EN) though to make the
-	 * sleep happen.
-	 */
-	outl(reg32 | SLP_EN, pmbase + PM1_CNT);
-
-	/* Make sure to stop executing code here for S3/S4/S5 */
-	if (slp_typ >= ACPI_S3)
-		halt();
-
-	/* In most sleep states, the code flow of this function ends at
-	 * the line above. However, if we entered sleep state S1 and wake
-	 * up again, we will continue to execute code in this function.
-	 */
-	reg32 = inl(pmbase + PM1_CNT);
-	if (reg32 & SCI_EN) {
-		/* The OS is not an ACPI OS, so we set the state to S0 */
-		reg32 &= ~(SLP_EN | SLP_TYP);
-		outl(reg32, pmbase + PM1_CNT);
-	}
-}
-
-/*
- * Look for Synchronous IO SMI and use save state from that
- * core in case we are not running on the same core that
- * initiated the IO transaction.
- */
-static em64t101_smm_state_save_area_t *smi_apmc_find_state_save(u8 cmd)
-{
-	em64t101_smm_state_save_area_t *state;
-	int node;
-
-	/* Check all nodes looking for the one that issued the IO */
-	for (node = 0; node < CONFIG_MAX_CPUS; node++) {
-		state = smm_get_save_state(node);
-
-		/* Check for Synchronous IO (bit0==1) */
-		if (!(state->io_misc_info & (1 << 0)))
-			continue;
-
-		/* Make sure it was a write (bit4==0) */
-		if (state->io_misc_info & (1 << 4))
-			continue;
-
-		/* Check for APMC IO port */
-		if (((state->io_misc_info >> 16) & 0xff) != APM_CNT)
-			continue;
-
-		/* Check AX against the requested command */
-		if ((state->rax & 0xff) != cmd)
-			continue;
-
-		return state;
-	}
-
-	return NULL;
-}
-
-#if IS_ENABLED(CONFIG_ELOG_GSMI)
-static void southbridge_smi_gsmi(void)
-{
-	u32 *ret, *param;
-	u8 sub_command;
-	em64t101_smm_state_save_area_t *io_smi =
-		smi_apmc_find_state_save(ELOG_GSMI_APM_CNT);
-
-	if (!io_smi)
-		return;
-
-	/* Command and return value in EAX */
-	ret = (u32*)&io_smi->rax;
-	sub_command = (u8)(*ret >> 8);
-
-	/* Parameter buffer in EBX */
-	param = (u32*)&io_smi->rbx;
-
-	/* drivers/elog/gsmi.c */
-	*ret = gsmi_exec(sub_command, param);
-}
-#endif
-
-static int mainboard_finalized = 0;
-
-static void southbridge_smi_apmc(void)
-{
-	u32 pmctrl;
-	u8 reg8;
-	em64t101_smm_state_save_area_t *state;
-
-	/* Emulate B2 register as the FADT / Linux expects it */
-
-	reg8 = inb(APM_CNT);
-	switch (reg8) {
-	case APM_CNT_CST_CONTROL:
-		/* Calling this function seems to cause
-		 * some kind of race condition in Linux
-		 * and causes a kernel oops
-		 */
-		printk(BIOS_DEBUG, "C-state control\n");
-		break;
-	case APM_CNT_PST_CONTROL:
-		/* Calling this function seems to cause
-		 * some kind of race condition in Linux
-		 * and causes a kernel oops
-		 */
-		printk(BIOS_DEBUG, "P-state control\n");
-		break;
-	case APM_CNT_ACPI_DISABLE:
-		pmctrl = inl(pmbase + PM1_CNT);
-		pmctrl &= ~SCI_EN;
-		outl(pmctrl, pmbase + PM1_CNT);
-		printk(BIOS_DEBUG, "SMI#: ACPI disabled.\n");
-		break;
-	case APM_CNT_ACPI_ENABLE:
-		pmctrl = inl(pmbase + PM1_CNT);
-		pmctrl |= SCI_EN;
-		outl(pmctrl, pmbase + PM1_CNT);
-		printk(BIOS_DEBUG, "SMI#: ACPI enabled.\n");
-		break;
-	case APM_CNT_GNVS_UPDATE:
-		if (smm_initialized) {
-			printk(BIOS_DEBUG, "SMI#: SMM structures already initialized!\n");
-			return;
-		}
-		state = smi_apmc_find_state_save(reg8);
-		if (state) {
-			/* EBX in the state save contains the GNVS pointer */
-			gnvs = (global_nvs_t *)((u32)state->rbx);
-			smm_initialized = 1;
-			printk(BIOS_DEBUG, "SMI#: Setting GNVS to %p\n", gnvs);
-		}
-		break;
-	case APM_CNT_FINALIZE:
-		if (mainboard_finalized) {
-			printk(BIOS_DEBUG, "SMI#: Already finalized\n");
-			return;
-		}
-
-		intel_me_finalize_smm();
-		intel_pch_finalize_smm();
-		intel_sandybridge_finalize_smm();
-		intel_model_206ax_finalize_smm();
-
-		mainboard_finalized = 1;
-		break;
-#if IS_ENABLED(CONFIG_ELOG_GSMI)
-	case ELOG_GSMI_APM_CNT:
-		southbridge_smi_gsmi();
-		break;
-#endif
-	}
-
-	mainboard_smi_apmc(reg8);
-}
-
-static void southbridge_smi_pm1(void)
-{
-	u16 pm1_sts;
-
-	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);
-#if IS_ENABLED(CONFIG_ELOG_GSMI)
-		elog_add_event(ELOG_TYPE_POWER_BUTTON);
-#endif
-		outl(reg32, pmbase + PM1_CNT);
-	}
-}
-
-static void southbridge_smi_gpe0(void)
-{
-	u32 gpe0_sts;
-
-	gpe0_sts = reset_gpe0_status();
-	dump_gpe0_status(gpe0_sts);
-}
-
-static void southbridge_smi_gpi(void)
-{
-	u16 reg16;
-	reg16 = inw(pmbase + ALT_GP_SMI_STS);
-	outw(reg16, pmbase + ALT_GP_SMI_STS);
-
-	reg16 &= inw(pmbase + ALT_GP_SMI_EN);
-
-	mainboard_smi_gpi(reg16);
-
-	if (reg16)
-		printk(BIOS_DEBUG, "GPI (mask %04x)\n", reg16);
-
-	outw(reg16, pmbase + ALT_GP_SMI_STS);
-}
-
-static void southbridge_smi_mc(void)
-{
-	u32 reg32;
-
-	reg32 = inl(pmbase + SMI_EN);
-
-	/* Are periodic SMIs enabled? */
-	if ((reg32 & MCSMI_EN) == 0)
-		return;
-
-	printk(BIOS_DEBUG, "Microcontroller SMI.\n");
-}
-
-
-
-static void southbridge_smi_tco(void)
-{
-	u32 tco_sts;
-
-	tco_sts = reset_tco_status();
-
-	/* Any TCO event? */
-	if (!tco_sts)
-		return;
-
-	if (tco_sts & (1 << 8)) { // BIOSWR
-		u8 bios_cntl;
-
-		bios_cntl = pci_read_config16(PCI_DEV(0, 0x1f, 0), 0xdc);
-
-		if (bios_cntl & 1) {
-			/* BWE is RW, so the SMI was caused by a
-			 * write to BWE, not by a write to the BIOS
-			 */
-
-			/* This is the place where we notice someone
-			 * is trying to tinker with the BIOS. We are
-			 * trying to be nice and just ignore it. A more
-			 * resolute answer would be to power down the
-			 * box.
-			 */
-			printk(BIOS_DEBUG, "Switching back to RO\n");
-			pci_write_config32(PCI_DEV(0, 0x1f, 0), 0xdc, (bios_cntl & ~1));
-		} /* No else for now? */
-	} else if (tco_sts & (1 << 3)) { /* TIMEOUT */
-		/* Handle TCO timeout */
-		printk(BIOS_DEBUG, "TCO Timeout.\n");
-	} else if (!tco_sts) {
-		dump_tco_status(tco_sts);
-	}
-}
-
-static void southbridge_smi_periodic(void)
-{
-	u32 reg32;
-
-	reg32 = inl(pmbase + SMI_EN);
-
-	/* Are periodic SMIs enabled? */
-	if ((reg32 & PERIODIC_EN) == 0)
-		return;
-
-	printk(BIOS_DEBUG, "Periodic SMI.\n");
-}
-
-static void southbridge_smi_monitor(void)
+void southbridge_smi_monitor(void)
 {
 #define IOTRAP(x) (trap_sts & (1 << x))
 	u32 trap_sts, trap_cycle;
@@ -796,76 +208,28 @@ static void southbridge_smi_monitor(void)
 #undef IOTRAP
 }
 
-typedef void (*smi_handler_t)(void);
-
-static smi_handler_t southbridge_smi[32] = {
-	NULL,			  //  [0] reserved
-	NULL,			  //  [1] reserved
-	NULL,			  //  [2] BIOS_STS
-	NULL,			  //  [3] LEGACY_USB_STS
-	southbridge_smi_sleep,	  //  [4] SLP_SMI_STS
-	southbridge_smi_apmc,	  //  [5] APM_STS
-	NULL,			  //  [6] SWSMI_TMR_STS
-	NULL,			  //  [7] reserved
-	southbridge_smi_pm1,	  //  [8] PM1_STS
-	southbridge_smi_gpe0,	  //  [9] GPE0_STS
-	southbridge_smi_gpi,	  // [10] GPI_STS
-	southbridge_smi_mc,	  // [11] MCSMI_STS
-	NULL,			  // [12] DEVMON_STS
-	southbridge_smi_tco,	  // [13] TCO_STS
-	southbridge_smi_periodic, // [14] PERIODIC_STS
-	NULL,			  // [15] SERIRQ_SMI_STS
-	NULL,			  // [16] SMBUS_SMI_STS
-	NULL,			  // [17] LEGACY_USB2_STS
-	NULL,			  // [18] INTEL_USB2_STS
-	NULL,			  // [19] reserved
-	NULL,			  // [20] PCI_EXP_SMI_STS
-	southbridge_smi_monitor,  // [21] MONITOR_STS
-	NULL,			  // [22] reserved
-	NULL,			  // [23] reserved
-	NULL,			  // [24] reserved
-	NULL,			  // [25] EL_SMI_STS
-	NULL,			  // [26] SPI_STS
-	NULL,			  // [27] reserved
-	NULL,			  // [28] reserved
-	NULL,			  // [29] reserved
-	NULL,			  // [30] reserved
-	NULL			  // [31] reserved
-};
-
-/**
- * @brief Interrupt handler for SMI#
- * @param node
- * @param state_save
- */
-void southbridge_smi_handler(void)
+void southbridge_smm_xhci_sleep(u8 slp_type)
 {
-	int i, dump = 0;
-	u32 smi_sts;
-
-	/* Update global variable pmbase */
-	pmbase = pci_read_config16(PCI_DEV(0, 0x1f, 0), 0x40) & 0xfffc;
-
-	/* We need to clear the SMI status registers, or we won't see what's
-	 * happening in the following calls.
-	 */
-	smi_sts = reset_smi_status();
-
-	/* Call SMI sub handler for each of the status bits */
-	for (i = 0; i < 31; i++) {
-		if (smi_sts & (1 << i)) {
-			if (southbridge_smi[i]) {
-				southbridge_smi[i]();
-			} else {
-				printk(BIOS_DEBUG, "SMI_STS[%d] occurred, but no "
-						"handler available.\n", i);
-				dump = 1;
-			}
-		}
-	}
+	if (smm_get_gnvs()->xhci)
+		xhci_sleep(slp_type);
+}
 
-	if (dump) {
-		dump_smi_status(smi_sts);
+void southbridge_update_gnvs(u8 apm_cnt, int *smm_done)
+{
+	em64t101_smm_state_save_area_t *state =
+		smi_apmc_find_state_save(apm_cnt);
+	if (state) {
+		/* EBX in the state save contains the GNVS pointer */
+		gnvs = (global_nvs_t *)((u32)state->rbx);
+		*smm_done = 1;
+		printk(BIOS_DEBUG, "SMI#: Setting GNVS to %p\n", gnvs);
 	}
+}
 
+void southbridge_finalize_all(void)
+{
+	intel_me_finalize_smm();
+	intel_pch_finalize_smm();
+	intel_sandybridge_finalize_smm();
+	intel_model_206ax_finalize_smm();
 }