diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/rambi/Kconfig | 3 | ||||
| -rw-r--r-- | src/mainboard/google/rambi/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/mainboard/google/rambi/chromeos.c | 64 | ||||
| -rw-r--r-- | src/mainboard/google/rambi/ec.c | 52 | ||||
| -rw-r--r-- | src/mainboard/google/rambi/ec.h | 65 | ||||
| -rw-r--r-- | src/mainboard/google/rambi/mainboard.c | 7 |
6 files changed, 178 insertions, 14 deletions
diff --git a/src/mainboard/google/rambi/Kconfig b/src/mainboard/google/rambi/Kconfig index 3a31c92736..00af512571 100644 --- a/src/mainboard/google/rambi/Kconfig +++ b/src/mainboard/google/rambi/Kconfig @@ -4,6 +4,9 @@ config BOARD_SPECIFIC_OPTIONS def_bool y select ARCH_X86 select SOC_INTEL_BAYTRAIL + select EC_GOOGLE_CHROMEEC + select EC_SOFTWARE_SYNC + select VIRTUAL_DEV_SWITCH select ENABLE_BUILTIN_COM1 select BOARD_ROMSIZE_KB_8192 select HAVE_ACPI_TABLES diff --git a/src/mainboard/google/rambi/Makefile.inc b/src/mainboard/google/rambi/Makefile.inc index 98e566be5c..77b2f2cb73 100644 --- a/src/mainboard/google/rambi/Makefile.inc +++ b/src/mainboard/google/rambi/Makefile.inc @@ -22,5 +22,6 @@ subdirs-y += spd romstage-$(CONFIG_CHROMEOS) += chromeos.c ramstage-$(CONFIG_CHROMEOS) += chromeos.c ramstage-$(CONFIG_CHROMEOS) += gpio.c +ramstage-$(CONFIG_EC_GOOGLE_CHROMEEC) += ec.c smm-$(CONFIG_HAVE_SMI_HANDLER) += mainboard_smi.c diff --git a/src/mainboard/google/rambi/chromeos.c b/src/mainboard/google/rambi/chromeos.c index 2681b3a495..f6f13edc24 100644 --- a/src/mainboard/google/rambi/chromeos.c +++ b/src/mainboard/google/rambi/chromeos.c @@ -22,10 +22,15 @@ #include <arch/io.h> #include <device/device.h> #include <device/pci.h> +#include <baytrail/gpio.h> -/* Compile-time settings for developer and recovery mode. */ -#define DEV_MODE_SETTING 1 -#define REC_MODE_SETTING 0 +#if CONFIG_EC_GOOGLE_CHROMEEC +#include "ec.h" +#include <ec/google/chromeec/ec.h> +#endif + +/* The WP status pin lives on GPIO_SSUS_6 which is pad 36 in the SUS well. */ +#define WP_STATUS_PAD 36 #ifndef __PRE_RAM__ #include <boot/coreboot_tables.h> @@ -34,11 +39,23 @@ #define ACTIVE_LOW 0 #define ACTIVE_HIGH 1 -static void fill_lb_gpio(struct lb_gpio *gpio, int polarity, +static int get_lid_switch(void) +{ +#if CONFIG_EC_GOOGLE_CHROMEEC + u8 ec_switches = inb(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_SWITCHES); + + return !!(ec_switches & EC_SWITCH_LID_OPEN); +#else + /* Default to force open. */ + return 1; +#endif +} + +static void fill_lb_gpio(struct lb_gpio *gpio, int port, int polarity, const char *name, int force) { memset(gpio, 0, sizeof(*gpio)); - gpio->port = -1; + gpio->port = port; gpio->polarity = polarity; if (force >= 0) gpio->value = force; @@ -53,27 +70,46 @@ void fill_lb_gpios(struct lb_gpios *gpios) gpios->count = GPIO_COUNT; gpio = gpios->gpios; - fill_lb_gpio(gpio++, ACTIVE_HIGH, "write protect", 0); - fill_lb_gpio(gpio++, ACTIVE_HIGH, "recovery", REC_MODE_SETTING); - fill_lb_gpio(gpio++, ACTIVE_HIGH, "developer", DEV_MODE_SETTING); - fill_lb_gpio(gpio++, ACTIVE_HIGH, "lid", 1); // force open - fill_lb_gpio(gpio++, ACTIVE_HIGH, "power", 0); - fill_lb_gpio(gpio++, ACTIVE_HIGH, "oprom", oprom_is_loaded); + fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "write protect", + get_write_protect_state()); + fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "recovery", + get_recovery_mode_switch()); + fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "developer", + get_developer_mode_switch()); + fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "lid", get_lid_switch()); + fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "power", 0); + fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "oprom", oprom_is_loaded); } #endif int get_developer_mode_switch(void) { - return DEV_MODE_SETTING; + return 0; } int get_recovery_mode_switch(void) { - return REC_MODE_SETTING; +#if CONFIG_EC_GOOGLE_CHROMEEC + u8 ec_switches = inb(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_SWITCHES); + u32 ec_events; + + /* If a switch is set, we don't need to look at events. */ + if (ec_switches & (EC_SWITCH_DEDICATED_RECOVERY)) + return 1; + + /* Else check if the EC has posted the keyboard recovery event. */ + ec_events = google_chromeec_get_events_b(); + + return !!(ec_events & + EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY)); +#else + return 0; +#endif } int get_write_protect_state(void) { - return 0; + /* WP is enabled when the pin is reading high. */ + return ssus_get_gpio(WP_STATUS_PAD); } diff --git a/src/mainboard/google/rambi/ec.c b/src/mainboard/google/rambi/ec.c new file mode 100644 index 0000000000..0919f0feec --- /dev/null +++ b/src/mainboard/google/rambi/ec.c @@ -0,0 +1,52 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 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/acpi.h> +#include <vendorcode/google/chromeos/chromeos.h> +#include <types.h> +#include <console/console.h> +#include <ec/google/chromeec/ec.h> +#include "ec.h" + +void mainboard_ec_init(void) +{ + printk(BIOS_DEBUG, "mainboard_ec_init\n"); + post_code(0xf0); + + /* Restore SCI event mask on resume. */ + if (acpi_slp_type == 3) { + google_chromeec_log_events(MAINBOARD_EC_LOG_EVENTS | + MAINBOARD_EC_S3_WAKE_EVENTS); + + /* Disable SMI and wake events */ + google_chromeec_set_smi_mask(0); + + /* Clear pending events */ + while (google_chromeec_get_event() != 0); + google_chromeec_set_sci_mask(MAINBOARD_EC_SCI_EVENTS); + } else { + google_chromeec_log_events(MAINBOARD_EC_LOG_EVENTS | + MAINBOARD_EC_S5_WAKE_EVENTS); + } + + /* Clear wake events, these are enabled on entry to sleep */ + google_chromeec_set_wake_mask(0); + + post_code(0xf1); +} diff --git a/src/mainboard/google/rambi/ec.h b/src/mainboard/google/rambi/ec.h new file mode 100644 index 0000000000..c55a504564 --- /dev/null +++ b/src/mainboard/google/rambi/ec.h @@ -0,0 +1,65 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 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 + */ + +#ifndef MAINBOARD_EC_H +#define MAINBOARD_EC_H + +#include <ec/google/chromeec/ec_commands.h> + +/* TODO(adurbin): Need to figure out how to handle 2 sets of GPIO banks. */ +#define EC_SCI_GPI 0 /* GPIO_SC_0 is EC_SCI# */ +#define EC_SMI_GPI 7 /* GPIO_SSUS_7 is EC_SMI# */ + +#define MAINBOARD_EC_SCI_EVENTS \ + (EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_CLOSED) |\ + EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_OPEN) |\ + EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_CONNECTED) |\ + EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_DISCONNECTED) |\ + EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_LOW) |\ + EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_CRITICAL) |\ + EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY) |\ + EC_HOST_EVENT_MASK(EC_HOST_EVENT_THERMAL_THRESHOLD) |\ + EC_HOST_EVENT_MASK(EC_HOST_EVENT_THERMAL_OVERLOAD) |\ + EC_HOST_EVENT_MASK(EC_HOST_EVENT_THROTTLE_START) |\ + EC_HOST_EVENT_MASK(EC_HOST_EVENT_THROTTLE_STOP) |\ + EC_HOST_EVENT_MASK(EC_HOST_EVENT_USB_CHARGER)) + +#define MAINBOARD_EC_SMI_EVENTS \ + (EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_CLOSED)) + +/* EC can wake from S5 with lid or power button */ +#define MAINBOARD_EC_S5_WAKE_EVENTS \ + (EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_OPEN) |\ + EC_HOST_EVENT_MASK(EC_HOST_EVENT_POWER_BUTTON)) + +/* EC can wake from S3 with lid or power button or key press */ +#define MAINBOARD_EC_S3_WAKE_EVENTS \ + (MAINBOARD_EC_S5_WAKE_EVENTS |\ + EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEY_PRESSED)) + +/* Log EC wake events plus EC shutdown events */ +#define MAINBOARD_EC_LOG_EVENTS \ + (EC_HOST_EVENT_MASK(EC_HOST_EVENT_THERMAL_SHUTDOWN) |\ + EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_SHUTDOWN)) + +#ifndef __ACPI__ +extern void mainboard_ec_init(void); +#endif + +#endif diff --git a/src/mainboard/google/rambi/mainboard.c b/src/mainboard/google/rambi/mainboard.c index d2bfea3e66..8c5b66608b 100644 --- a/src/mainboard/google/rambi/mainboard.c +++ b/src/mainboard/google/rambi/mainboard.c @@ -33,6 +33,7 @@ #include <arch/io.h> #include <arch/interrupt.h> #include <boot/coreboot_tables.h> +#include "ec.h" void mainboard_suspend_resume(void) { @@ -126,11 +127,17 @@ static int int15_handler(void) } #endif +static void mainboard_init(device_t dev) +{ + mainboard_ec_init(); +} + // mainboard_enable is executed as first thing after // enumerate_buses(). static void mainboard_enable(device_t dev) { + dev->ops->init = mainboard_init; #if CONFIG_VGA_ROM_RUN /* Install custom int15 handler for VGA OPROM */ mainboard_interrupt_handlers(0x15, &int15_handler); |