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Diffstat (limited to 'src/mainboard/google/stout/ec.c')
| -rw-r--r-- | src/mainboard/google/stout/ec.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/src/mainboard/google/stout/ec.c b/src/mainboard/google/stout/ec.c new file mode 100644 index 0000000000..474d96f2fb --- /dev/null +++ b/src/mainboard/google/stout/ec.c @@ -0,0 +1,127 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2012 The Chromium OS Authors. All rights reserved. + * + * 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/acpi.h> +#include <arch/io.h> +#include <vendorcode/google/chromeos/chromeos.h> +#include <types.h> +#include <console/console.h> +#include <ec/quanta/it8518/ec.h> +#include <device/device.h> +#include <device/pci.h> +#include <southbridge/intel/bd82x6x/pch.h> +#include <elog.h> +#include "ec.h" + +#ifdef __SMM__ +#include <cpu/x86/smm.h> +#endif + +#ifndef __SMM__ +void stout_ec_init(void) +{ + + printk(BIOS_DEBUG,"%s: EC FW version %x%x\n", __func__, + ec_read(EC_FW_VER), ec_read(EC_FW_VER + 1)); + + /* + * Important: get_recovery_mode_switch() must be called in EC init. + */ + get_recovery_mode_switch(); + + /* Unmute */ + ec_kbc_write_cmd(EC_KBD_CMD_UNMUTE); + + /* + * Set USB Power off in S3 (enabled in S3 path if requested in gnvs) + * 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. + */ + ec_write(EC_PERIPH_CNTL_3, ec_read(EC_PERIPH_CNTL_3) & 0xE); + ec_write(EC_USB_S3_EN, ec_read(EC_USB_S3_EN) & 0xE); + + // TODO: Power Limit Setting +} + +#else // SMM + +void stout_ec_finalize_smm(void) +{ + u8 ec_reg, critical_shutdown = 0; + u32 pm1_cnt; + + /* + * Check EC for error conditions. + */ + + /* Fan Error : Peripheral Status 3 (0x35) bit 4 */ + ec_reg = ec_read(EC_PERIPH_STAT_3); + + if (ec_reg & 0x8) { + printk(BIOS_ERR, " EC Fan Error\n"); + critical_shutdown = 1; +#if CONFIG_ELOG + elog_add_event_word(EC_EVENT_BATTERY_CRITICAL, EC_EVENT_FAN_ERROR); +#endif + } + + + /* Thermal Device Error : Peripheral Status 3 (0x35) bit 8 */ + if (ec_reg & 0x80) { + printk(BIOS_ERR, " EC Thermal Device Error\n"); + critical_shutdown = 1; +#if CONFIG_ELOG + elog_add_event_word(EC_EVENT_BATTERY_CRITICAL, EC_EVENT_THERMAL); +#endif + } + + + /* Critical Battery Error */ + ec_reg = ec_read(EC_MBAT_STATUS); + + if ((ec_reg & 0xCF) == 0xC0) { + printk(BIOS_ERR, " EC Critical Battery Error\n"); + critical_shutdown = 1; +#if CONFIG_ELOG + elog_add_event_word(ELOG_TYPE_EC_EVENT, EC_EVENT_BATTERY_CRITICAL); +#endif + } + + if ((ec_reg & 0x8F) == 0x8F) { + printk(BIOS_ERR, " EC Read Battery Error\n"); +#if CONFIG_ELOG + elog_add_event_word(ELOG_TYPE_EC_EVENT, EC_EVENT_BATTERY); +#endif + } + + + if (critical_shutdown) { + printk(BIOS_ERR, "EC critical_shutdown"); + + /* Go to S5 */ + pm1_cnt = inl(smm_get_pmbase() + PM1_CNT); + pm1_cnt |= (0xf << 10); + outl(pm1_cnt, smm_get_pmbase() + PM1_CNT); + } +} +#endif //__SMM__ |