diff options
Diffstat (limited to 'src/mainboard/intel/strago/smihandler.c')
| -rwxr-xr-x | src/mainboard/intel/strago/smihandler.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/src/mainboard/intel/strago/smihandler.c b/src/mainboard/intel/strago/smihandler.c new file mode 100755 index 0000000000..42cc7d7ce5 --- /dev/null +++ b/src/mainboard/intel/strago/smihandler.c @@ -0,0 +1,177 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * Copyright (C) 2015 Intel Corp. + * + * 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. + */ + +#include <arch/io.h> +#include <console/console.h> +#include <cpu/x86/smm.h> +#include "ec.h" + +#include <ec/google/chromeec/ec.h> +#include <elog.h> + +#include <soc/nvs.h> +#include <soc/pm.h> +#include <soc/gpio.h> + +#include "onboard.h" + +/* The wake gpio is SUS_GPIO[0]. */ +#define WAKE_GPIO_EN SUS_GPIO_EN0 + +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; +} + +#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) +static uint8_t mainboard_smi_ec(void) +{ + uint8_t cmd = google_chromeec_get_event(); + uint16_t pmbase = get_pmbase(); + uint32_t pm1_cnt; + +#if IS_ENABLED(CONFIG_ELOG_GSMI) + /* Log this event */ + if (cmd) + elog_add_event_byte(ELOG_TYPE_EC_EVENT, cmd); +#endif + + switch (cmd) { + case EC_HOST_EVENT_LID_CLOSED: + printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n"); + + /* Go to S5 */ + pm1_cnt = inl(pmbase + PM1_CNT); + pm1_cnt |= SLP_EN | (SLP_TYP_S5 << SLP_TYP_SHIFT); + outl(pm1_cnt, pmbase + PM1_CNT); + break; + } + + return cmd; +} +#endif + +/* + * The entire 32-bit ALT_GPIO_SMI register is passed as a parameter. Note, that + * this includes the enable bits in the lower 16 bits. + */ +void mainboard_smi_gpi(uint32_t alt_gpio_smi) +{ +#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) + if (alt_gpio_smi & (1 << EC_SMI_GPI)) { + /* Process all pending events */ + while (mainboard_smi_ec() != 0) + ; + } +#endif +} + +void mainboard_smi_sleep(uint8_t slp_typ) +{ + /* Disable USB charging if required */ + switch (slp_typ) { + case 3: +#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) + if (smm_get_gnvs()->s3u0 == 0) + google_chromeec_set_usb_charge_mode( + 0, USB_CHARGE_MODE_DISABLED); + if (smm_get_gnvs()->s3u1 == 0) + google_chromeec_set_usb_charge_mode( + 1, USB_CHARGE_MODE_DISABLED); + + /* Enable wake events */ + google_chromeec_set_wake_mask(MAINBOARD_EC_S3_WAKE_EVENTS); +#endif + /* Enable wake pin in GPE block. */ + enable_gpe(WAKE_GPIO_EN); + break; + case 5: +#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) + if (smm_get_gnvs()->s5u0 == 0) + google_chromeec_set_usb_charge_mode( + 0, USB_CHARGE_MODE_DISABLED); + if (smm_get_gnvs()->s5u1 == 0) + google_chromeec_set_usb_charge_mode( + 1, USB_CHARGE_MODE_DISABLED); + + /* Enable wake events */ + google_chromeec_set_wake_mask(MAINBOARD_EC_S5_WAKE_EVENTS); +#endif + break; + } + +#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) + /* Disable SCI and SMI events */ + google_chromeec_set_smi_mask(0); + google_chromeec_set_sci_mask(0); + + /* Clear pending events that may trigger immediate wake */ + while (google_chromeec_get_event() != 0) + ; + + if (smm_get_gnvs()->bdid == BOARD_DVT) { + /* Set LPC lines to low power in S3/S5. */ + if ((slp_typ == SLEEP_STATE_S3) || (slp_typ == SLEEP_STATE_S5)) + lpc_set_low_power(); + } +#endif +} + +int mainboard_smi_apmc(uint8_t apmc) +{ + switch (apmc) { + case APM_CNT_ACPI_ENABLE: +#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) + google_chromeec_set_smi_mask(0); + /* Clear all pending events */ + while (google_chromeec_get_event() != 0) + ; + google_chromeec_set_sci_mask(MAINBOARD_EC_SCI_EVENTS); +#endif + break; + case APM_CNT_ACPI_DISABLE: +#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) + google_chromeec_set_sci_mask(0); + /* Clear all pending events */ + while (google_chromeec_get_event() != 0) + ; + google_chromeec_set_smi_mask(MAINBOARD_EC_SMI_EVENTS); +#endif + break; + } + return 0; +} |