romstage.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <soc/romstage.h>
#include <spd_bin.h>
#include <string.h>
 
static void mainboard_fill_rcomp_res_data(void *rcomp_ptr)
{
        const u16 RcompResistor[3] = {121, 81, 100};
        memcpy(rcomp_ptr, RcompResistor, sizeof(RcompResistor));
}
 
static void mainboard_fill_rcomp_strength_data(void *rcomp_strength_ptr)
{
        const u16 RcompTarget[5] = {100, 40, 20, 20, 26};
        memcpy(rcomp_strength_ptr, RcompTarget, sizeof(RcompTarget));
}
 
void mainboard_memory_init_params(FSPM_UPD *mupd)
{
        FSP_M_CONFIG *mem_cfg = &mupd->FspmConfig;
 
        struct spd_block blk = {
                .addr_map = {0x50, 0x52},
        };
 
        get_spd_smbus(&blk);
        dump_spd_info(&blk);
 
        mainboard_fill_rcomp_res_data(&mem_cfg->RcompResistor);
        mainboard_fill_rcomp_strength_data(&mem_cfg->RcompTarget);
 
        mem_cfg->DqPinsInterleaved = TRUE;
        mem_cfg->CaVrefConfig = 2;
        mem_cfg->MemorySpdDataLen = blk.len;
        mem_cfg->MemorySpdPtr00 = (uintptr_t)blk.spd_array[0];
        mem_cfg->MemorySpdPtr10 = (uintptr_t)blk.spd_array[1];
}