| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2013 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #ifndef _RAMSTAGE_CACHE_ |
| #define _RAMSTAGE_CACHE_ |
| |
| #if !defined(__PRE_RAM__) |
| #error "ramstage_cache only used in romstage for loading ramstage." |
| #endif |
| |
| /* This structure is saved along with the relocated ramstage program when |
| * CONFIG_RELOCATED_RAMSTAGE is employed. For x86, it can used to protect |
| * the integrity of the ramstage program on S3 resume by saving a copy of |
| * the relocated ramstage in SMM space with the assumption that the SMM region |
| * cannot be altered from the OS. The magic value just serves as a quick sanity |
| * check. */ |
| |
| #define RAMSTAGE_CACHE_MAGIC 0xf3c3a02a |
| |
| struct ramstage_cache { |
| uint32_t magic; |
| uint32_t entry_point; |
| uint32_t load_address; |
| uint32_t size; |
| char program[0]; |
| } __attribute__((packed)); |
| |
| /* Chipset/Board function for obtaining cache location and size. */ |
| struct ramstage_cache *ramstage_cache_location(long *size); |
| /* Chipset/Board function called when cache is invalid on resume. */ |
| void ramstage_cache_invalid(struct ramstage_cache *cache); |
| |
| #endif /* _RAMSTAGE_CACHE_ */ |