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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#ifndef _COMMON_MRC_CACHE_H_
#define _COMMON_MRC_CACHE_H_
#include <stddef.h>
#include <stdint.h>
#include <commonlib/region.h>
enum {
MRC_TRAINING_DATA,
MRC_VARIABLE_DATA,
};
/*
* It's up to the caller to decide when to retrieve and stash data. There is
* differentiation on recovery mode CONFIG_HAS_RECOVERY_MRC_CACHE, but that's
* only for locating where to retrieve and save the data. If a platform doesn't
* want to update the data then it shouldn't stash the data for saving.
* Similarly, if the platform doesn't need the data for booting because of a
* policy don't request the data.
*/
/* Get and stash data for saving provided the type passed in. The functions
* return < 0 on error, 0 on success. */
int mrc_cache_get_current(int type, uint32_t version,
struct region_device *rdev);
int mrc_cache_stash_data(int type, uint32_t version, const void *data,
size_t size);
#endif /* _COMMON_MRC_CACHE_H_ */
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