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/* Copyright 2014 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.
*/
/* NPCX-specific SIB module for Chrome EC */
#ifndef __CROS_EC_SYSTEM_CHIP_H
#define __CROS_EC_SYSTEM_CHIP_H
/* Flags for BBRM_DATA_INDEX_WAKE */
#define HIBERNATE_WAKE_MTC BIT(0) /* MTC alarm */
#define HIBERNATE_WAKE_PIN BIT(1) /* Wake pin */
#define HIBERNATE_WAKE_LCT BIT(2) /* LCT alarm */
/*
* Indicate that EC enters hibernation via PSL. When EC wakes up from
* hibernation and this flag is set, it will check the related status bit to
* know the actual wake up source. (From LCT or physical wakeup pins)
*/
#define HIBERNATE_WAKE_PSL BIT(3)
/* Indices for battery-backed ram (BBRAM) data position */
enum bbram_data_index {
BBRM_DATA_INDEX_SCRATCHPAD = 0, /* General-purpose scratchpad */
BBRM_DATA_INDEX_SAVED_RESET_FLAGS = 4, /* Saved reset flags */
BBRM_DATA_INDEX_WAKE = 8, /* Wake reasons for hibernate */
BBRM_DATA_INDEX_PD0 = 12, /* USB-PD saved port0 state */
BBRM_DATA_INDEX_PD1 = 13, /* USB-PD saved port1 state */
BBRM_DATA_INDEX_TRY_SLOT = 14, /* Vboot EC try slot */
BBRM_DATA_INDEX_PD2 = 15, /* USB-PD saved port2 state */
/* Index 16-31 available for future use */
BBRM_DATA_INDEX_RAMLOG = 32, /* RAM log for Booter */
BBRM_DATA_INDEX_PANIC_FLAGS = 35, /* Flag to indicate validity of
* panic data starting at index
* 36.
*/
BBRM_DATA_INDEX_PANIC_BKUP = 36, /* Panic data (index 35-63)*/
BBRM_DATA_INDEX_LCT_TIME = 64, /* The start time of LCT(4 bytes)
*/
};
enum psl_pin_t {
PSL_IN1,
PSL_IN2,
PSL_IN3,
PSL_IN4,
PSL_NONE,
};
/* Issue a watchdog reset */
void system_watchdog_reset(void);
/* Stops the watchdog timer and unlocks configuration. */
void watchdog_stop_and_unlock(void);
/*
* Configure the specific memory addresses in the the MPU
* (Memory Protection Unit) for Nuvoton different chip series.
*/
void system_mpu_config(void);
/* Hibernate function for different Nuvoton chip series. */
void __hibernate_npcx_series(void);
/* Check and clear BBRAM status on power-on reset */
void system_check_bbram_on_reset(void);
/* The utilities and variables depend on npcx chip family */
#if defined(CHIP_FAMILY_NPCX5) || defined(CONFIG_WORKAROUND_FLASH_DOWNLOAD_API)
/* Bypass for GMDA issue of ROM api utilities only on npcx5 series */
void system_download_from_flash(uint32_t srcAddr, uint32_t dstAddr,
uint32_t size, uint32_t exeAddr);
/* Begin address for hibernate utility; defined in linker script */
extern unsigned int __flash_lpfw_start;
/* End address for hibernate utility; defined in linker script */
extern unsigned int __flash_lpfw_end;
/* Begin address for little FW; defined in linker script */
extern unsigned int __flash_lplfw_start;
/* End address for little FW; defined in linker script */
extern unsigned int __flash_lplfw_end;
#endif
#if NPCX_FAMILY_VERSION >= NPCX_FAMILY_NPCX7
/* Configure PSL mode setting for the wake-up pins. */
int system_config_psl_mode(enum gpio_signal signal);
/* Configure PSL pins and enter PSL mode. */
void system_enter_psl_mode(void);
/* End address for hibernate utility; defined in linker script */
extern unsigned int __after_init_end;
#endif
#if NPCX_FAMILY_VERSION >= NPCX_FAMILY_NPCX9
void system_set_psl_gpo(int level);
#endif
#endif /* __CROS_EC_SYSTEM_CHIP_H */
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