| /* |
| * 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 functions */ |
| #include <ec/quanta/it8518/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 = ec_it8518_get_event(); |
| u32 pm1_cnt; |
| |
| switch (cmd) { |
| case EC_SMI_LID_CLOSED: |
| 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 events */ |
| while (mainboard_smi_ec() != 0); |
| } |
| } |
| |
| void mainboard_smi_sleep(u8 slp_typ) |
| { |
| /* |
| * Tell the EC to Enable USB power for S3 if requested. |
| * Bit0 of 0x0D/Bit0 of 0x26 |
| * 0/0 All USB port off |
| * 1/0 USB on, all USB port didn’t support wake up |
| * 0/1 USB on, yellow port support wake up charge, but may not support |
| * charge smart phone. |
| * 1/1 USB on, yellow port in AUTO mode and didn’t support wake up system. |
| */ |
| if (smm_get_gnvs()->s3u0 != 0 || smm_get_gnvs()->s3u1 != 0) { |
| ec_write(EC_PERIPH_CNTL_3, ec_read(EC_PERIPH_CNTL_3) | 0x00); |
| ec_write(EC_USB_S3_EN, ec_read(EC_USB_S3_EN) | 0x01); |
| printk(BIOS_DEBUG, "USB wake from S3 enabled.\n"); |
| } else { |
| /* |
| * If USB charging in suspend is disabled then also disable |
| * the XHCI PME to prevent wake when the port power is cut |
| * after the transition into suspend. |
| */ |
| if (smm_get_gnvs()->xhci) { |
| u32 reg32 = pci_read_config32(PCH_XHCI_DEV, 0x74); |
| reg32 &= ~(1 << 8); /* disable PME */ |
| reg32 |= (1 << 15); /* clear PME status */ |
| pci_write_config32(PCH_XHCI_DEV, 0x74, reg32); |
| } |
| } |
| |
| ec_kbc_write_cmd(EC_KBD_CMD_MUTE); |
| ec_it8518_enable_wake_events(); |
| } |
| |
| #define APMC_FINALIZE 0xcb |
| #define APMC_ACPI_EN 0xe1 |
| #define APMC_ACPI_DIS 0x1e |
| |
| static int mainboard_finalized = 0; |
| |
| int mainboard_smi_apmc(u8 apmc) |
| { |
| switch (apmc) { |
| case APMC_FINALIZE: |
| if (mainboard_finalized) { |
| printk(BIOS_DEBUG, "SMI#: Already finalized\n"); |
| return 0; |
| } |
| printk(BIOS_DEBUG, "SMI#: finalize\n"); |
| intel_me_finalize_smm(); |
| intel_pch_finalize_smm(); |
| intel_sandybridge_finalize_smm(); |
| intel_model_206ax_finalize_smm(); |
| stout_ec_finalize_smm(); |
| |
| mainboard_finalized = 1; |
| break; |
| case APMC_ACPI_EN: |
| /* |
| * TODO(kimarie) Clear all pending events and enable SCI. |
| */ |
| ec_write_cmd(EC_CMD_NOTIFY_ACPI_ENTER); |
| break; |
| case APMC_ACPI_DIS: |
| /* |
| * TODO(kimarie) Clear all pending events and enable SMI. |
| */ |
| ec_write_cmd(EC_CMD_NOTIFY_ACPI_EXIT); |
| break; |
| } |
| return 0; |
| } |