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/* Copyright 2020 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "common.h"
#include "console.h"
#include "gpio.h"
#include "hooks.h"
#include "registers.h"
#include "spi.h"
#include "system.h"
#include "task.h"
#include "util.h"
/**
* Disable restricted commands when the system is locked.
*
* @see console.h system.c
*/
int console_is_restricted(void)
{
return system_is_locked();
}
static void ap_deferred(void)
{
/*
* in S3: SLP_S3_L is 0 and SLP_S0_L is X.
* in S0ix: SLP_S3_L is X and SLP_S0_L is 0.
* in S0: SLP_S3_L is 1 and SLP_S0_L is 1.
* in S5/G3, the FP MCU should not be running.
*/
int running = gpio_get_level(GPIO_PCH_SLP_S3_L)
&& gpio_get_level(GPIO_PCH_SLP_S0_L);
if (running) { /* S0 */
disable_sleep(SLEEP_MASK_AP_RUN);
hook_notify(HOOK_CHIPSET_RESUME);
} else { /* S0ix/S3 */
hook_notify(HOOK_CHIPSET_SUSPEND);
enable_sleep(SLEEP_MASK_AP_RUN);
}
}
DECLARE_DEFERRED(ap_deferred);
/* PCH power state changes */
static void slp_event(enum gpio_signal signal)
{
hook_call_deferred(&ap_deferred_data, 0);
}
#include "gpio_list.h"
/* Initialize board. */
static void board_init(void)
{
/* Enable interrupt on PCH power signals */
gpio_enable_interrupt(GPIO_PCH_SLP_S3_L);
gpio_enable_interrupt(GPIO_PCH_SLP_S0_L);
/*
* Enable the SPI peripheral interface if the PCH is up.
* Do not use hook_call_deferred(), because ap_deferred() will be
* called after tasks with priority higher than HOOK task (very late).
*/
ap_deferred();
}
DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
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