| /* |
| * 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 <arch/io.h> |
| #include <console/console.h> |
| #include <cpu/x86/smm.h> |
| #include <southbridge/intel/bd82x6x/nvs.h> |
| #include <southbridge/intel/bd82x6x/pch.h> |
| #include <southbridge/intel/bd82x6x/me.h> |
| #include <northbridge/intel/sandybridge/sandybridge.h> |
| #include <cpu/intel/model_206ax/model_206ax.h> |
| #include <ec/smsc/mec1308/ec.h> |
| #include "ec.h" |
| |
| int mainboard_io_trap_handler(int smif) |
| { |
| switch (smif) { |
| case 0x99: |
| printk(BIOS_DEBUG, "Sample\n"); |
| smm_get_gnvs()->smif = 0; |
| break; |
| default: |
| 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; |
| } |
| |
| static u8 mainboard_smi_ec(void) |
| { |
| u8 cmd; |
| u32 pm1_cnt; |
| |
| cmd = read_ec_command_byte(EC_GET_SMI_CAUSE); |
| |
| switch (cmd) { |
| case EC_LID_CLOSE: |
| printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n"); |
| |
| /* Go to S5 */ |
| pm1_cnt = inl(smm_get_pmbase() + PM1_CNT); |
| pm1_cnt |= (0xf << 10); |
| outl(pm1_cnt, smm_get_pmbase() + PM1_CNT); |
| break; |
| } |
| |
| return cmd; |
| } |
| |
| void mainboard_smi_gpi(u32 gpi_sts) |
| { |
| if (gpi_sts & (1 << EC_SMI_GPI)) { |
| /* Process all pending EC requests */ |
| ec_set_ports(EC_MAILBOX_PORT, EC_MAILBOX_PORT+1); |
| while (mainboard_smi_ec() != 0xff); |
| |
| /* The EC may keep asserting SMI# for some |
| * period unless we kick it here. |
| */ |
| send_ec_command(EC_SMI_DISABLE); |
| send_ec_command(EC_SMI_ENABLE); |
| } |
| } |
| |
| #define APMC_FINALIZE 0xcb |
| |
| static int mainboard_finalized = 0; |
| |
| int mainboard_smi_apmc(u8 apmc) |
| { |
| ec_set_ports(EC_MAILBOX_PORT, EC_MAILBOX_PORT+1); |
| |
| switch (apmc) { |
| case 0xe1: /* ACPI ENABLE */ |
| send_ec_command(EC_SMI_DISABLE); |
| send_ec_command(EC_ACPI_ENABLE); |
| break; |
| |
| case 0x1e: /* ACPI DISABLE */ |
| send_ec_command(EC_SMI_ENABLE); |
| send_ec_command(EC_ACPI_DISABLE); |
| break; |
| |
| case APMC_FINALIZE: |
| if (mainboard_finalized) { |
| printk(BIOS_DEBUG, "SMI#: Already finalized\n"); |
| return 0; |
| } |
| |
| intel_me_finalize_smm(); |
| intel_pch_finalize_smm(); |
| intel_sandybridge_finalize_smm(); |
| intel_model_206ax_finalize_smm(); |
| |
| mainboard_finalized = 1; |
| break; |
| } |
| return 0; |
| } |