From f65c1e40885377a07794fc59f38fce1c9230854f Mon Sep 17 00:00:00 2001 From: Michał Żygowski Date: Sun, 1 Dec 2019 18:14:39 +0100 Subject: amdblocks/acpimmio: Unify BIOSRAM usage MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit All AMD CPU families supported in coreboot have BIOSRAM space. Looking at the source code, every family could have the same API to save and restore cbmem top or UMA base and size. Unify BIOSRAM layout and add implementation for cbmem top and UMA storing. Also replace the existing implementation of cbmem top and UMA with the BIOSRAM access. TEST=boot PC Engines apu1 and apu2 Signed-off-by: Michał Żygowski Change-Id: I69a03e4f01d7fb2ffc9f8b5af73d7e4e7ec027da Reviewed-on: https://review.coreboot.org/c/coreboot/+/37402 Reviewed-by: Richard Spiegel Reviewed-by: Angel Pons Reviewed-by: Kyösti Mälkki Tested-by: build bot (Jenkins) --- .../amd/common/block/include/amdblocks/biosram.h | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 src/soc/amd/common/block/include/amdblocks/biosram.h (limited to 'src/soc/amd/common/block/include') diff --git a/src/soc/amd/common/block/include/amdblocks/biosram.h b/src/soc/amd/common/block/include/amdblocks/biosram.h new file mode 100644 index 0000000000..e2c1eb33f7 --- /dev/null +++ b/src/soc/amd/common/block/include/amdblocks/biosram.h @@ -0,0 +1,33 @@ +/* + * This file is part of the coreboot project. + * + * 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 __AMDBLOCKS_BIOSRAM_H__ +#define __AMDBLOCKS_BIOSRAM_H__ + +#include + +/* BiosRam Ranges at 0xfed80500 or I/O 0xcd4/0xcd5 */ +#define BIOSRAM_CBMEM_TOP 0xf0 /* 4 bytes */ +#define BIOSRAM_UMA_SIZE 0xf4 /* 4 bytes */ +#define BIOSRAM_UMA_BASE 0xf8 /* 8 bytes */ + +/* Saves the UMA size returned by AGESA */ +void save_uma_size(uint32_t size); +/* Saves the UMA base address returned by AGESA */ +void save_uma_base(uint64_t base); +/* Returns the saved UMA size */ +uint32_t get_uma_size(void); +/* Returns the saved UMA base */ +uint64_t get_uma_base(void); + +#endif -- cgit v1.2.3