diff options
Diffstat (limited to 'src/mainboard/google/panther/smihandler.c')
| -rw-r--r-- | src/mainboard/google/panther/smihandler.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/src/mainboard/google/panther/smihandler.c b/src/mainboard/google/panther/smihandler.c new file mode 100644 index 0000000000..2ad249848a --- /dev/null +++ b/src/mainboard/google/panther/smihandler.c @@ -0,0 +1,161 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * Copyright 2012 Google Inc. + * + * 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/lynxpoint/nvs.h> +#include <southbridge/intel/lynxpoint/pch.h> +#include <southbridge/intel/lynxpoint/me.h> +#include <northbridge/intel/haswell/haswell.h> +#include <cpu/intel/haswell/haswell.h> +#include <elog.h> + +/* GPIO46 controls the WLAN_DISABLE_L signal. */ +#define GPIO_WLAN_DISABLE_L 46 +#define GPIO_LTE_DISABLE_L 59 + +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 0 +static u8 mainboard_smi_ec(void) +{ + u8 cmd = 0;// google_chromeec_get_event(); + +#if CONFIG_ELOG_GSMI + /* Log this event */ + if (cmd) + elog_add_event_byte(ELOG_TYPE_EC_EVENT, cmd); +#endif + + return cmd; +} +#endif + +/* gpi_sts is GPIO 47:32 */ +void mainboard_smi_gpi(u32 gpi_sts) +{ +#if 0 + if (gpi_sts & (1 << (EC_SMI_GPI - 32))) { + /* Process all pending events */ + while (mainboard_smi_ec() != 0); + } +#endif +} + +void mainboard_smi_sleep(u8 slp_typ) +{ + /* Disable USB charging if required */ + switch (slp_typ) { + case 3: + //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); + + /* Prevent leak from standby rail to WLAN rail in S3. */ + //set_gpio(GPIO_WLAN_DISABLE_L, 0); + /* Disable LTE */ + //set_gpio(GPIO_LTE_DISABLE_L, 0); + + /* Enable wake events */ + //google_chromeec_set_wake_mask(MAINBOARD_EC_S3_WAKE_EVENTS); + break; + case 5: + //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); + + /* Prevent leak from standby rail to WLAN rail in S5. */ + //set_gpio(GPIO_WLAN_DISABLE_L, 0); + /* Disable LTE */ + //set_gpio(GPIO_LTE_DISABLE_L, 0); + + /* Enable wake events */ + //google_chromeec_set_wake_mask(MAINBOARD_EC_S5_WAKE_EVENTS); + break; + } + + /* 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); +} + +#define APMC_FINALIZE 0xcb + +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; + } + + intel_pch_finalize_smm(); + intel_northbridge_haswell_finalize_smm(); + intel_cpu_haswell_finalize_smm(); + + mainboard_finalized = 1; + break; + case APM_CNT_ACPI_ENABLE: + //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); + break; + case APM_CNT_ACPI_DISABLE: + //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);; + break; + } + return 0; +} |