| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2014 Google Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #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_ */ |