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Diffstat (limited to 'src/southbridge/intel/i82801gx/i82801gx_smihandler.c')
-rw-r--r--src/southbridge/intel/i82801gx/i82801gx_smihandler.c647
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diff --git a/src/southbridge/intel/i82801gx/i82801gx_smihandler.c b/src/southbridge/intel/i82801gx/i82801gx_smihandler.c
deleted file mode 100644
index 997ec0fd5c..0000000000
--- a/src/southbridge/intel/i82801gx/i82801gx_smihandler.c
+++ /dev/null
@@ -1,647 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2008-2009 coresystems GmbH
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- * MA 02110-1301 USA
- */
-
-#include <types.h>
-#include <arch/io.h>
-#include <arch/romcc_io.h>
-#include <console/console.h>
-#include <cpu/x86/cache.h>
-#include <cpu/x86/smm.h>
-#include <device/pci_def.h>
-#include "i82801gx.h"
-
-#define APM_CNT 0xb2
-#define CST_CONTROL 0x85
-#define PST_CONTROL 0x80
-#define ACPI_DISABLE 0x1e
-#define ACPI_ENABLE 0xe1
-#define GNVS_UPDATE 0xea
-#define APM_STS 0xb3
-
-/* I945 */
-#define SMRAM 0x9d
-#define D_OPEN (1 << 6)
-#define D_CLS (1 << 5)
-#define D_LCK (1 << 4)
-#define G_SMRANE (1 << 3)
-#define C_BASE_SEG ((0 << 2) | (1 << 1) | (0 << 0))
-
-#include "i82801gx_nvs.h"
-
-/* While we read PMBASE dynamically in case it changed, let's
- * initialize it with a sane value
- */
-u16 pmbase = DEFAULT_PMBASE;
-u8 smm_initialized = 0;
-
-/* GNVS needs to be updated by an 0xEA PM Trap (B2) after it has been located
- * by coreboot.
- */
-global_nvs_t *gnvs = (global_nvs_t *)0x0;
-void *tcg = (void *)0x0;
-void *smi1 = (void *)0x0;
-
-/**
- * @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 << 25)) printk(BIOS_DEBUG, "EL_SMI ");
- 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, "EL_SCI/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, "HOT_PLUG ");
- 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");
-}
-
-/* We are using PCIe accesses for now
- * 1. the chipset can do it
- * 2. we don't need to worry about how we leave 0xcf8/0xcfc behind
- */
-#include "../../../northbridge/intel/i945/pcie_config.c"
-
-int southbridge_io_trap_handler(int smif)
-{
- switch (smif) {
- case 0x32:
- printk(BIOS_DEBUG, "OS Init\n");
- /* gnvs->smif:
- * On success, the IO Trap Handler returns 0
- * On failure, the IO Trap Handler returns a value != 0
- */
- gnvs->smif = 0;
- return 1; /* IO trap handled */
- }
-
- /* Not handled */
- 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;
- device_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_smi_sleep(unsigned int node, smm_state_save_area_t *state_save)
-{
- u8 reg8;
- u32 reg32;
- u8 slp_typ;
- /* FIXME: the power state on boot should be read from
- * CMOS or even better from GNVS. Right now it's hard
- * coded at compile time.
- */
- u8 s5pwr = CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL;
-
- /* 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 = (reg32 >> 10) & 7;
-
- /* Next, do the deed.
- */
-
- switch (slp_typ) {
- case 0: printk(BIOS_DEBUG, "SMI#: Entering S0 (On)\n"); break;
- case 1: printk(BIOS_DEBUG, "SMI#: Entering S1 (Assert STPCLK#)\n"); break;
- case 5:
- printk(BIOS_DEBUG, "SMI#: Entering S3 (Suspend-To-RAM)\n");
- /* Invalidate the cache before going to S3 */
- wbinvd();
- break;
- case 6: printk(BIOS_DEBUG, "SMI#: Entering S4 (Suspend-To-Disk)\n"); break;
- case 7:
- printk(BIOS_DEBUG, "SMI#: Entering S5 (Soft Power off)\n");
-
- outl(0, pmbase + GPE0_EN);
-
- /* Should we keep the power state after a power loss?
- * In case the setting is "ON" or "OFF" we don't have
- * to do anything. But if it's "KEEP" we have to switch
- * to "OFF" before entering S5.
- */
- if (s5pwr == MAINBOARD_POWER_KEEP) {
- reg8 = pcie_read_config8(PCI_DEV(0, 0x1f, 0), GEN_PMCON_3);
- reg8 |= 1;
- pcie_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);
-
- /* 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);
- }
-}
-
-static void southbridge_smi_apmc(unsigned int node, smm_state_save_area_t *state_save)
-{
- u32 pmctrl;
- u8 reg8;
-
- /* Emulate B2 register as the FADT / Linux expects it */
-
- reg8 = inb(APM_CNT);
- switch (reg8) {
- case 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 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 ACPI_DISABLE:
- pmctrl = inl(pmbase + PM1_CNT);
- pmctrl &= ~SCI_EN;
- outl(pmctrl, pmbase + PM1_CNT);
- printk(BIOS_DEBUG, "SMI#: ACPI disabled.\n");
- break;
- case ACPI_ENABLE:
- pmctrl = inl(pmbase + PM1_CNT);
- pmctrl |= SCI_EN;
- outl(pmctrl, pmbase + PM1_CNT);
- printk(BIOS_DEBUG, "SMI#: ACPI enabled.\n");
- break;
- case GNVS_UPDATE:
- if (smm_initialized) {
- printk(BIOS_DEBUG, "SMI#: SMM structures already initialized!\n");
- return;
- }
- gnvs = *(global_nvs_t **)0x500;
- tcg = *(void **)0x504;
- smi1 = *(void **)0x508;
- smm_initialized = 1;
- printk(BIOS_DEBUG, "SMI#: Setting up structures to %p, %p, %p\n", gnvs, tcg, smi1);
- break;
- default:
- printk(BIOS_DEBUG, "SMI#: Unknown function APM_CNT=%02x\n", reg8);
- }
-}
-
-static void southbridge_smi_pm1(unsigned int node, smm_state_save_area_t *state_save)
-{
- 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);
- outl(reg32, pmbase + PM1_CNT);
- }
-}
-
-static void southbridge_smi_gpe0(unsigned int node, smm_state_save_area_t *state_save)
-{
- u32 gpe0_sts;
-
- gpe0_sts = reset_gpe0_status();
- dump_gpe0_status(gpe0_sts);
-}
-
-static void southbridge_smi_gpi(unsigned int node, smm_state_save_area_t *state_save)
-{
- u16 reg16;
- reg16 = inw(pmbase + ALT_GP_SMI_STS);
- outl(reg16, pmbase + ALT_GP_SMI_STS);
-
- reg16 &= inw(pmbase + ALT_GP_SMI_EN);
-
- if (mainboard_smi_gpi) {
- mainboard_smi_gpi(reg16);
- } else {
- if (reg16)
- printk(BIOS_DEBUG, "GPI (mask %04x)\n",reg16);
- }
-}
-
-static void southbridge_smi_mc(unsigned int node, smm_state_save_area_t *state_save)
-{
- 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(unsigned int node, smm_state_save_area_t *state_save)
-{
- 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 = pcie_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");
- pcie_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(unsigned int node, smm_state_save_area_t *state_save)
-{
- 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(unsigned int node, smm_state_save_area_t *state_save)
-{
-#define IOTRAP(x) (trap_sts & (1 << x))
- u32 trap_sts, trap_cycle;
- u32 data, mask = 0;
- int i;
-
- trap_sts = RCBA32(0x1e00); // TRSR - Trap Status Register
- RCBA32(0x1e00) = trap_sts; // Clear trap(s) in TRSR
-
- trap_cycle = RCBA32(0x1e10);
- for (i=16; i<20; i++) {
- if (trap_cycle & (1 << i))
- mask |= (0xff << ((i - 16) << 2));
- }
-
-
- /* IOTRAP(3) SMI function call */
- if (IOTRAP(3)) {
- if (gnvs && gnvs->smif)
- io_trap_handler(gnvs->smif); // call function smif
- return;
- }
-
- /* IOTRAP(2) currently unused
- * IOTRAP(1) currently unused */
-
- /* IOTRAP(0) SMIC */
- if (IOTRAP(0)) {
- if (!(trap_cycle & (1 << 24))) { // It's a write
- printk(BIOS_DEBUG, "SMI1 command\n");
- data = RCBA32(0x1e18);
- data &= mask;
- // if (smi1)
- // southbridge_smi_command(data);
- // return;
- }
- // Fall through to debug
- }
-
- printk(BIOS_DEBUG, " trapped io address = 0x%x\n", trap_cycle & 0xfffc);
- for (i=0; i < 4; i++) if(IOTRAP(i)) printk(BIOS_DEBUG, " TRAP = %d\n", i);
- printk(BIOS_DEBUG, " AHBE = %x\n", (trap_cycle >> 16) & 0xf);
- printk(BIOS_DEBUG, " MASK = 0x%08x\n", mask);
- printk(BIOS_DEBUG, " read/write: %s\n", (trap_cycle & (1 << 24)) ? "read" : "write");
-
- if (!(trap_cycle & (1 << 24))) {
- /* Write Cycle */
- data = RCBA32(0x1e18);
- printk(BIOS_DEBUG, " iotrap written data = 0x%08x\n", data);
- }
-#undef IOTRAP
-}
-
-typedef void (*smi_handler_t)(unsigned int node,
- smm_state_save_area_t *state_save);
-
-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 smm_revision revision of the smm state save map
- */
-
-void southbridge_smi_handler(unsigned int node, smm_state_save_area_t *state_save)
-{
- int i, dump = 0;
- u32 smi_sts;
-
- /* Update global variable pmbase */
- pmbase = pcie_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();
-
- /* Filter all non-enabled SMI events */
- // FIXME Double check, this clears MONITOR
- // smi_sts &= inl(pmbase + SMI_EN);
-
- /* 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](node, state_save);
- else {
- printk(BIOS_DEBUG, "SMI_STS[%d] occured, but no "
- "handler available.\n", i);
- dump = 1;
- }
- }
- }
-
- if(dump) {
- dump_smi_status(smi_sts);
- }
-
-}
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