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/* Copyright 2017 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* chip/g-specific system function prototypes */
#ifndef __CROS_EC_SYSTEM_CHIP_H
#define __CROS_EC_SYSTEM_CHIP_H
/**
* On systems with protection from a failing RW update: read the retry counter
* and act on it.
*
* @return EC_SUCCESS if no flash write errors were encounterd.
*/
int system_process_retry_counter(void);
/**
* On systems with protection from a failing RW update: reset retry
* counter, this is used after a new image upload is finished, to make
* sure that the new image has a chance to run.
*/
void system_clear_retry_counter(void);
/**
* A function provided by some platforms to decrement a retry counter.
*
* This should be used whenever a system reset is manually triggered.
*/
void system_decrement_retry_counter(void);
/**
* A function provided by some platforms to hint that something is going
* wrong.
*
* @return a boolean, set to True if rolling reboot condition is suspected.
*/
int system_rolling_reboot_suspected(void);
/**
* Returns True if a rollback was detected during system_preinit.
*
* system_rollback_detected only returns True from rollback until the AP boots
* and then enters deep sleep. The system won't know that it rolled back on
* resume from deep sleep.
*
* @return a boolean, set to True if a rollback is detected.
*/
int system_rollback_detected(void);
/**
* Returns non-zero value when firmware is expected to be abe to detect user
* request to cut off battery supply.
*/
int system_battery_cutoff_support_required(void);
/**
* Functions to update INFO1 rollback mask based on one or both RW image
* headers.
*/
void system_update_rollback_mask_with_active_img(void);
void system_update_rollback_mask_with_both_imgs(void);
/**
* Scan INFO1 rollback map and infomap fields of both RW and RW_B image
* headers, and return a string showing how many zeros are there at the base
* of in each of these objects.
*
* The passed in parameters are the memory area to put the string in and the
* size of this memory area.
*/
void system_get_rollback_bits(char *value, size_t value_size);
/**
* Set the rollback counter to a value which would ensure a rollback on the
* next boot.
*/
void system_ensure_rollback(void);
/**
* Enables holding external pins across soft chip resets. Application firmware
* is responsible for disengaging pinhold upon reset.
*/
void system_pinhold_on_reset_enable(void);
/**
* Disables holding external pins across soft chip resets.
*/
void system_pinhold_on_reset_disable(void);
/**
* Disengages pinhold if engaged.
*/
void system_pinhold_disengage(void);
/**
* Notify the board booted.
*/
void system_notify_ap_boot(void);
#endif /* __CROS_EC_SYSTEM_CHIP_H */
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