From patchwork Thu Nov 11 09:29:26 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: SMM on K8 Date: Thu, 11 Nov 2010 09:29:26 -0000 From: Stefan Reinauer X-Patchwork-Id: 2302 Message-Id: <20101111092926.GB29795@coreboot.org> To: coreboot@coreboot.org First shot, untested preliminary AMD K8/FAM10 SMM support Signed-off-by: Stefan Reinauer Index: src/southbridge/via/vt8237r/Makefile.inc =================================================================== --- src/southbridge/via/vt8237r/Makefile.inc (revision 6060) +++ src/southbridge/via/vt8237r/Makefile.inc (working copy) @@ -25,3 +25,8 @@ driver-y += vt8237r_usb.c driver-y += vt8237r_nic.c ramstage-$(CONFIG_GENERATE_ACPI_TABLES) += vt8237_fadt.c + +ramstage-$(CONFIG_HAVE_SMI_HANDLER) += vt8237r_smi.c +smm-$(CONFIG_HAVE_SMI_HANDLER) += vt8237r_smihandler.c + + Index: src/southbridge/via/vt8237r/vt8237r.h =================================================================== --- src/southbridge/via/vt8237r/vt8237r.h (revision 6060) +++ src/southbridge/via/vt8237r/vt8237r.h (working copy) @@ -20,12 +20,11 @@ #ifndef SOUTHBRIDGE_VIA_VT8237R_VT8237R_H #define SOUTHBRIDGE_VIA_VT8237R_VT8237R_H -#include - /* Static resources for the VT8237R southbridge */ #define VT8237R_APIC_ID 0x2 #define VT8237R_ACPI_IO_BASE 0x500 +#define DEFAULT_PMBASE VT8237R_ACPI_IO_BASE #define VT8237R_SMBUS_IO_BASE 0x400 /* 0x0 disabled, 0x2 reserved, 0xf = IRQ15 */ #define VT8237R_ACPI_IRQ 0x9 @@ -36,6 +35,74 @@ #endif #define VT8237R_HPET_ADDR 0xfed00000ULL +/* PMBASE FIXME mostly taken from ich7 */ +#define PM1_STS 0x00 +#define WAK_STS (1 << 15) +#define PCIEXPWAK_STS (1 << 14) +#define PRBTNOR_STS (1 << 11) +#define RTC_STS (1 << 10) +#define PWRBTN_STS (1 << 8) +#define GBL_STS (1 << 5) +#define BM_STS (1 << 4) +#define TMROF_STS (1 << 0) +#define PM1_EN 0x02 +#define PCIEXPWAK_DIS (1 << 14) +#define RTC_EN (1 << 10) +#define PWRBTN_EN (1 << 8) +#define GBL_EN (1 << 5) +#define TMROF_EN (1 << 0) +#define PM1_CNT 0x04 +#define SLP_EN (1 << 13) +#define SLP_TYP (7 << 10) +#define GBL_RLS (1 << 2) +#define BM_RLD (1 << 1) +#define SCI_EN (1 << 0) +#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 USB4_STS (1 << 14) +#define PME_B0_STS (1 << 13) +#define USB3_STS (1 << 12) +#define PME_STS (1 << 11) +#define BATLOW_STS (1 << 10) +#define PCI_EXP_STS (1 << 9) +#define RI_STS (1 << 8) +#define SMB_WAK_STS (1 << 7) +#define TCOSCI_STS (1 << 6) +#define AC97_STS (1 << 5) +#define USB2_STS (1 << 4) +#define USB1_STS (1 << 3) +#define SWGPE_STS (1 << 2) +#define HOT_PLUG_STS (1 << 1) +#define THRM_STS (1 << 0) +#define GPE0_EN 0x2c +#define PME_B0_EN (1 << 13) +#define PME_EN (1 << 11) +#define SMI_EN 0x30 +#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 + /* IDE */ #define IDE_CS 0x40 #define IDE_CONF_I 0x41 @@ -103,6 +170,15 @@ #endif ; +#define MAINBOARD_POWER_OFF 0 +#define MAINBOARD_POWER_ON 1 +#define MAINBOARD_POWER_KEEP 2 + +#ifndef CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL +#define CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL MAINBOARD_POWER_ON +#endif + + #ifdef __PRE_RAM__ #ifndef __ROMCC__ u8 smbus_read_byte(u8 dimm, u8 offset); @@ -115,8 +191,7 @@ int vt8237_early_network_init(struct vt8237_network_rom *rom); #endif #else -#include -void writeback(struct device *dev, u16 where, u8 what); +void writeback(device_t dev, u16 where, u8 what); void dump_south(device_t dev); #endif Index: src/southbridge/via/vt8237r/vt8237r_smihandler.c =================================================================== --- src/southbridge/via/vt8237r/vt8237r_smihandler.c (revision 0) +++ src/southbridge/via/vt8237r/vt8237r_smihandler.c (revision 0) @@ -0,0 +1,643 @@ +/* + * 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 +#include +#include +#include +#include +#include +#include +#include "vt8237r.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 + +#include "vt8237r_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/amd/amdk8/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) { + // FIXME vt8237r code missing + //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) +{ +#if 0 +#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 +#endif +} + +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); + } + +} Index: src/southbridge/via/vt8237r/vt8237r_smi.c =================================================================== --- src/southbridge/via/vt8237r/vt8237r_smi.c (revision 0) +++ src/southbridge/via/vt8237r/vt8237r_smi.c (revision 0) @@ -0,0 +1,62 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2010 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 +#include +#include +#include +#include +#include +#include +#include +#include + +#define SMM_ADDR 0xc0010112 +#define SMM_MASK 0xc0010113 +#define SMM_BASE 0xa0000 + +extern unsigned char _binary_smm_start; +extern unsigned char _binary_smm_size; + +void smm_init(void) +{ + msr_t msr; + /* enable the SMM memory window */ + + msr = rdmsr(SMM_MASK); + msr.lo |= (1 << 0); // Enable ASEG SMRAM Range + msr.lo &= ~(1 << 2); // Open ASEG SMRAM Range + wrmsr(SMM_MASK, msr); + + /* copy the real SMM handler */ + memcpy((void *)SMM_BASE, &_binary_smm_start, (size_t)&_binary_smm_size); + wbinvd(); + + msr = rdmsr(SMM_MASK); + msr.lo |= ~(1 << 2); // Close ASEG SMRAM Range + wrmsr(SMM_MASK, msr); + + msr = rdmsr(SMM_ADDR); + msr.lo &= 0x0001ffff; + msr.hi &= 0xffffff00; + msr.lo |= (SMM_BASE << 17); + msr.hi |= (SMM_BASE >> 15); + wrmsr(SMM_ADDR, msr); +} + Index: src/southbridge/via/vt8237r/vt8237r_nvs.h =================================================================== --- src/southbridge/via/vt8237r/vt8237r_nvs.h (revision 0) +++ src/southbridge/via/vt8237r/vt8237r_nvs.h (revision 0) @@ -0,0 +1,46 @@ +/* + * 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 + */ + +typedef struct { + /* Miscellaneous */ + u16 osys; /* 0x00 - Operating System */ + u8 smif; /* 0x02 - SMI function call ("TRAP") */ + u8 prm0; /* 0x03 - SMI function call parameter */ + u8 prm1; /* 0x04 - SMI function call parameter */ + u8 scif; /* 0x05 - SCI function call (via _L00) */ + u8 prm2; /* 0x06 - SCI function call parameter */ + u8 prm3; /* 0x07 - SCI function call parameter */ + u8 lckf; /* 0x08 - Global Lock function for EC */ + u8 prm4; /* 0x09 - Lock function parameter */ + u8 prm5; /* 0x0a - Lock function parameter */ + u32 p80d; /* 0x0b - Debug port (IO 0x80) value */ + u8 lids; /* 0x0f - LID state (open = 1) */ + u8 pwrs; /* 0x10 - Power state (AC = 1) */ + u8 dbgs; /* 0x11 - Debug state */ + u8 linx; /* 0x12 - Linux OS */ + u8 dckn; /* 0x13 - PCIe docking state */ + u8 rsvd[0x28-0x14]; + /* Processor Identification */ + u8 apic; /* 0x28 - APIC enabled */ + u8 mpen; /* 0x29 - MP capable/enabled */ + u8 pcp0; /* 0x2a - PDC CPU/CORE 0 */ + u8 pcp1; /* 0x2b - PDC CPU/CORE 1 */ + u8 ppcm; /* 0x2c - Max. PPC state */ +} __attribute__((packed)) global_nvs_t; + Index: src/southbridge/via/vt8237r/vt8237r_lpc.c =================================================================== --- src/southbridge/via/vt8237r/vt8237r_lpc.c (revision 6060) +++ src/southbridge/via/vt8237r/vt8237r_lpc.c (working copy) @@ -28,6 +28,7 @@ #include #include #include +#include #include #include #include @@ -501,6 +502,7 @@ /* Enable serial IRQ, 6PCI clocks. */ pci_write_config8(dev, 0x52, 0x9); + smm_init(); #endif /* Power management setup */ Index: src/include/cpu/x86/smm.h =================================================================== --- src/include/cpu/x86/smm.h (revision 6060) +++ src/include/cpu/x86/smm.h (working copy) @@ -254,7 +254,7 @@ void io_trap_handler(int smif); int southbridge_io_trap_handler(int smif); -int mainboard_io_trap_handler(int smif); +int __attribute__((weak)) mainboard_io_trap_handler(int smif); void southbridge_smi_set_eos(void); Index: src/cpu/x86/smm/smmrelocate.S =================================================================== --- src/cpu/x86/smm/smmrelocate.S (revision 6060) +++ src/cpu/x86/smm/smmrelocate.S (working copy) @@ -22,6 +22,8 @@ // Make sure no stage 2 code is included: #define __PRE_RAM__ +#if !defined(CONFIG_NORTHBRIDGE_AMD_AMDK8) && !defined(CONFIG_NORTHBRIDGE_AMD_FAM10) + // FIXME: Is this piece of code southbridge specific, or // can it be cleaned up so this include is not required? // It's needed right now because we get our DEFAULT_PMBASE from @@ -175,4 +177,4 @@ /* That's it. return */ rsm smm_relocation_end: - +#endif Index: src/mainboard/asus/m2v-mx_se/Kconfig =================================================================== --- src/mainboard/asus/m2v-mx_se/Kconfig (revision 6060) +++ src/mainboard/asus/m2v-mx_se/Kconfig (working copy) @@ -37,6 +37,7 @@ select TINY_BOOTBLOCK select HAVE_MAINBOARD_RESOURCES select QRANK_DIMM_SUPPORT + select HAVE_SMI_HANDLER config MAINBOARD_DIR string Index: src/northbridge/amd/amdk8/pcie_config.c =================================================================== --- src/northbridge/amd/amdk8/pcie_config.c (revision 0) +++ src/northbridge/amd/amdk8/pcie_config.c (revision 0) @@ -0,0 +1,68 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2009 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 "amdk8.h" + +static inline __attribute__ ((always_inline)) +u8 pcie_read_config8(device_t dev, unsigned int where) +{ + unsigned long addr; + addr = DEFAULT_PCIEXBAR | dev | where; + return read8(addr); +} + +static inline __attribute__ ((always_inline)) +u16 pcie_read_config16(device_t dev, unsigned int where) +{ + unsigned long addr; + addr = DEFAULT_PCIEXBAR | dev | where; + return read16(addr); +} + +static inline __attribute__ ((always_inline)) +u32 pcie_read_config32(device_t dev, unsigned int where) +{ + unsigned long addr; + addr = DEFAULT_PCIEXBAR | dev | where; + return read32(addr); +} + +static inline __attribute__ ((always_inline)) +void pcie_write_config8(device_t dev, unsigned int where, u8 value) +{ + unsigned long addr; + addr = DEFAULT_PCIEXBAR | dev | where; + write8(addr, value); +} + +static inline __attribute__ ((always_inline)) +void pcie_write_config16(device_t dev, unsigned int where, u16 value) +{ + unsigned long addr; + addr = DEFAULT_PCIEXBAR | dev | where; + write16(addr, value); +} + +static inline __attribute__ ((always_inline)) +void pcie_write_config32(device_t dev, unsigned int where, u32 value) +{ + unsigned long addr; + addr = DEFAULT_PCIEXBAR | dev | where; + write32(addr, value); +} Index: src/northbridge/amd/amdk8/amdk8.h =================================================================== --- src/northbridge/amd/amdk8/amdk8.h (revision 6060) +++ src/northbridge/amd/amdk8/amdk8.h (working copy) @@ -2,6 +2,8 @@ #define AMDK8_H +#define DEFAULT_PCIEXBAR 0xe0000000 + #if CONFIG_K8_REV_F_SUPPORT == 1 #include "amdk8_f.h" #else