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/* Copyright 2019 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef __CROS_EC_ISH_PERSISTENT_DATA_H
#define __CROS_EC_ISH_PERSISTENT_DATA_H
#include "panic.h"
/*
* If you make backwards-incompatible changes to this struct, (that
* is, reading a previous version of the data would be incorrect),
* simply change the magic number in ish_persistent_data.c. This will
* cause the struct to be re-initialized when the firmware loads.
*/
struct ish_persistent_data {
uint32_t magic;
uint32_t reset_flags;
uint32_t watchdog_counter;
struct panic_data panic_data;
};
/*
* Local copy of persistent data, which is copied from AON memory only
* if the data in AON memory is valid.
*/
extern struct ish_persistent_data ish_persistent_data;
/*
* Copy the AON persistent data into the local copy and initialize
* system reset flags, only if magic number is correct.
*/
void ish_persistent_data_init(void);
/*
* Commit the local copy to the AON memory (to be called at reset).
*/
void ish_persistent_data_commit(void);
/**
* SNOWBALL - registers about UMA/IMR DDR information and FW location
* in it. ISH Bringup will set these register values at boot
*/
struct snowball_struct {
uint32_t reserved[28];
uint32_t volatile uma_base_hi;
uint32_t volatile uma_base_lo;
uint32_t volatile uma_limit;
uint32_t volatile fw_offset;
};
#endif /* __CROS_EC_ISH_PERSISTENT_DATA_H */
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