8ead1dc875
Currently, the option to cache DIMM SPD data in an FMAP region is closely coupled to a single board (google/hatch) and requires a custom FMAP to utilize. Loosen this coupling by introducing a Kconfig option which adds a correctly sized and aligned RW_SPD_CACHE region to the default FMAP. Add a Kconfig option for the region name, replacing the existing hard- coded instance in spd_cache.h. Change the inclusion of spd_cache.c to use this new Kconfig, rather than the board-specific one currently used. Lastly, have google/hatch select the new Kconfig when appropriate to ensure no change in current functionality. Test: build/boot WYVERN google/hatch variant with default FMAP, verify FMAP contains RW_SPD_CACHE, verify SPD cache used via cbmem log. Also tested on an out-of-tree Purism board. Change-Id: Iee0e7acb01e238d7ed354e3dbab1207903e3a4fc Signed-off-by: Matt DeVillier <matt.devillier@puri.sm> Reviewed-on: https://review.coreboot.org/c/coreboot/+/48520 Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
24 lines
853 B
C
24 lines
853 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
|
|
#ifndef __SPD_CACHE_H
|
|
#define __SPD_CACHE_H
|
|
|
|
#include <spd_bin.h>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#define SPD_CACHE_FMAP_NAME (CONFIG_SPD_CACHE_FMAP_NAME)
|
|
#define SC_SPD_NUMS (CONFIG_DIMM_MAX)
|
|
#define SC_SPD_OFFSET(n) (CONFIG_DIMM_SPD_SIZE * n)
|
|
#define SC_CRC_OFFSET (CONFIG_DIMM_MAX * CONFIG_DIMM_SPD_SIZE)
|
|
#define SC_SPD_TOTAL_LEN (CONFIG_DIMM_MAX * CONFIG_DIMM_SPD_SIZE)
|
|
#define SC_SPD_LEN (CONFIG_DIMM_SPD_SIZE)
|
|
#define SC_CRC_LEN (sizeof(uint16_t))
|
|
|
|
enum cb_err update_spd_cache(struct spd_block *blk);
|
|
enum cb_err load_spd_cache(uint8_t **spd_cache, size_t *spd_cache_sz);
|
|
bool spd_cache_is_valid(uint8_t *spd_cache, size_t spd_cache_sz);
|
|
bool check_if_dimm_changed(u8 *spd_cache, struct spd_block *blk);
|
|
enum cb_err spd_fill_from_cache(uint8_t *spd_cache, struct spd_block *blk);
|
|
|
|
#endif
|