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Diffstat (limited to 'src/southbridge/intel/sch/smihandler.c')
| -rw-r--r-- | src/southbridge/intel/sch/smihandler.c | 399 |
1 files changed, 0 insertions, 399 deletions
diff --git a/src/southbridge/intel/sch/smihandler.c b/src/southbridge/intel/sch/smihandler.c deleted file mode 100644 index 57eb35c23b..0000000000 --- a/src/southbridge/intel/sch/smihandler.c +++ /dev/null @@ -1,399 +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. - */ - -#include <arch/io.h> -#include <console/console.h> -#include <cpu/x86/cache.h> -#include <cpu/x86/smm.h> -#include "sch.h" - -#define DEBUG_SMI - -/* 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)) - -/* ICH7 */ -#define PM1_STS 0x00 -#define PM1_EN 0x02 -#define PM1_CNT 0x04 -#define PM1_TMR 0x08 -#define PROC_CNT 0x10 -#define LV2 0x14 -#define LV3 0x15 -#define LV4 0x16 -#define PM2_CNT 0x20 // mobile only -#define GPE0_STS 0x28 -#define GPE0_EN 0x2c -#define SMI_EN 0x30 -#define EL_SMI_EN (1 << 25) // Intel Quick Resume Technology -#define INTEL_USB2_EN (1 << 18) // Intel-Specific USB2 SMI logic -#define LEGACY_USB2_EN (1 << 17) // Legacy USB2 SMI logic -#define PERIODIC_EN (1 << 14) // SMI on PERIODIC_STS in SMI_STS -#define TCO_EN (1 << 13) // Enable TCO Logic (BIOSWE et al) -#define MCSMI_EN (1 << 11) // Trap microcontroller range access -#define BIOS_RLS (1 << 7) // asserts SCI on bit set -#define SWSMI_TMR_EN (1 << 6) // start software smi timer on bit set -#define APMC_EN (1 << 5) // Writes to APM_CNT cause SMI# -#define SLP_SMI_EN (1 << 4) // Write to SLP_EN in PM1_CNT asserts SMI# -#define LEGACY_USB_EN (1 << 3) // Legacy USB circuit SMI logic -#define BIOS_EN (1 << 2) // Assert SMI# on setting GBL_RLS bit -#define EOS (1 << 1) // End of SMI (deassert SMI#) -#define GBL_SMI_EN (1 << 0) // SMI# generation at all? -#define SMI_STS 0x34 -#define ALT_GP_SMI_EN 0x38 -#define ALT_GP_SMI_STS 0x3a -#define GPE_CNTL 0x42 -#define DEVACT_STS 0x44 -#define SS_CNT 0x50 -#define C3_RES 0x54 - -//#include "i82801gx_nvs.h" - -/* While we read PMBASE dynamically in case it changed, let's - * initialize it with a sane value - */ -static u16 pmbase = DEFAULT_PMBASE; - -// disabled because SMM doesn't actually work yet -#if 0 -/** - * @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_DEBUG, "PM1_STS: "); - if (pm1_sts & (1 << 15)) printk(BIOS_DEBUG, "WAK "); - if (pm1_sts & (1 << 14)) printk(BIOS_DEBUG, "PCIEXPWAK "); - if (pm1_sts & (1 << 11)) printk(BIOS_DEBUG, "PRBTNOR "); - if (pm1_sts & (1 << 10)) printk(BIOS_DEBUG, "RTC "); - if (pm1_sts & (1 << 8)) printk(BIOS_DEBUG, "PWRBTN "); - if (pm1_sts & (1 << 5)) printk(BIOS_DEBUG, "GBL "); - if (pm1_sts & (1 << 4)) printk(BIOS_DEBUG, "BM "); - if (pm1_sts & (1 << 0)) printk(BIOS_DEBUG, "TMROF "); - printk(BIOS_DEBUG, "\n"); -} - -/** - * @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"); -} -#endif - -int southbridge_io_trap_handler(int smif) -{ - //global_nvs_t *gnvs = (global_nvs_t *)0xc00; - - switch (smif) { - case 0x32: - printk(BIOS_DEBUG, "OS Init\n"); - //gnvs->smif = 0; - break; - default: - /* Not handled */ - return 0; - } - - /* On success, the IO Trap Handler returns 0 - * On failure, the IO Trap Handler returns a value != 0 - * - * For now, we force the return value to 0 and log all traps to - * see what's going on. - */ - //gnvs->smif = 0; - return 1; /* IO trap handled */ -} - -/** - * @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); -} - -/** - * @brief Interrupt handler for SMI# - * @param node - * @param state_save - */ -void southbridge_smi_handler(unsigned int node, smm_state_save_area_t *state_save) -{ -// FIXME: the necessary magic isn't available yet. the code -// below is a partially adapted ICH7 version of the handler -#if 0 - u8 reg8; - u16 pmctrl; - u16 pm1_sts; - u32 smi_sts, gpe0_sts, tco_sts; - - pmbase = pcie_read_config16(PCI_DEV(0, 0x1f, 0), 0x48) & 0xfffc; - printk(BIOS_SPEW, "SMI#: pmbase = 0x%04x\n", pmbase); - - /* 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(); - dump_smi_status(smi_sts); - - if (smi_sts & (1 << 21)) { // MONITOR - global_nvs_t *gnvs = (global_nvs_t *)0xc00; - u32 reg32; - - reg32 = RCBA32(0x1e00); TRSR - Trap Status Register -//#if 0 - /* Comment in for some useful debug */ - for (i=0; i<4; i++) { - if (reg32 & (1 << i)) { - printk(BIOS_DEBUG, " io trap #%d\n", i); - } - } -//#endif - RCBA32(0x1e00) = reg32; TRSR - - reg32 = RCBA32(0x1e10); - - if ((reg32 & 0xfffc) != 0x808) { - printk(BIOS_DEBUG, " trapped io address = 0x%x\n", reg32 & 0xfffc); - printk(BIOS_DEBUG, " AHBE = %x\n", (reg32 >> 16) & 0xf); - printk(BIOS_DEBUG, " read/write: %s\n", (reg32 & (1 << 24)) ? "read" : - "write"); - } - - if (!(reg32 & (1 << 24))) { - /* Write Cycle */ - reg32 = RCBA32(0x1e18); - printk(BIOS_DEBUG, " iotrap written data = 0x%08x\n", reg32); - - } - - if (gnvs->smif) - io_trap_handler(gnvs->smif); // call function smif - } - - if (smi_sts & (1 << 13)) { // TCO - tco_sts = reset_tco_status(); - dump_tco_status(tco_sts); - - 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? */ - } - } - - if (smi_sts & (1 << 8)) { // PM1 - pm1_sts = reset_pm1_status(); - dump_pm1_status(pm1_sts); - } - - if (smi_sts & (1 << 9)) { // GPE0 - gpe0_sts = reset_gpe0_status(); - dump_gpe0_status(gpe0_sts); - } - - if (smi_sts & (1 << 5)) { // APM - /* Emulate B2 register as the FADT / Linux expects it */ - - reg8 = inb(0xb2); - switch (reg8) { - case ACPI_DISABLE: - pmctrl = inw(pmbase + 0x04); - pmctrl |= (1 << 0); - outw(pmctrl, pmbase + 0x04); - printk(BIOS_DEBUG, "SMI#: ACPI disabled.\n"); - break; - case ACPI_ENABLE: - pmctrl = inw(pmbase + 0x04); - pmctrl &= ~(1 << 0); - outw(pmctrl, pmbase + 0x04); - printk(BIOS_DEBUG, "SMI#: ACPI enabled.\n"); - break; - } - } - - if (smi_sts & (1 << 4)) { // SLP_SMI - u32 reg32; - - /* First, disable further SMIs */ - reg8 = inb(pmbase + SMI_EN); - reg8 &= ~SLP_SMI_EN; - outb(reg8, pmbase + SMI_EN); - - /* Next, do the deed, we should change - * power on after power loss bits here - * if we're going to S5 - */ - - /* 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. - */ - reg32 = inl(pmbase + 0x04); - printk(BIOS_DEBUG, "SMI#: SLP = 0x%08x\n", reg32); - printk(BIOS_DEBUG, "SMI#: Powering off.\n"); - outl(reg32 | (1 << 13), pmbase + 0x04); - } -#endif -} |