romstage.c

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/* SPDX-License-Identifier: GPL-2.0-or-later */
 
#include <fsp/api.h>
#include <soc/romstage.h>
#include <spd_bin.h>
#include <string.h>
 
static void mainboard_fill_dq_map_data(void *dq_map_ch0, void *dq_map_ch1)
{
        const u8 dq_map[2][12] = {
                { 0x0F, 0xF0, 0x00, 0xF0, 0x0F, 0xF0,
                  0x0F, 0x00, 0xFF, 0x00, 0xFF, 0x00 },
                { 0x33, 0xCC, 0x00, 0xCC, 0x33, 0xCC,
                  0x33, 0x00, 0xFF, 0x00, 0xFF, 0x00 } };
        memcpy(dq_map_ch0, dq_map[0], sizeof(dq_map[0]));
        memcpy(dq_map_ch1, dq_map[1], sizeof(dq_map[1]));
}
 
static void mainboard_fill_dqs_map_data(void *dqs_map_ch0, void *dqs_map_ch1)
{
        const u8 dqs_map[2][8] = {
                { 0, 1, 2, 3, 4, 5, 6, 7 },
                { 1, 0, 2, 3, 4, 5, 6, 7 } };
        memcpy(dqs_map_ch0, dqs_map[0], sizeof(dqs_map[0]));
        memcpy(dqs_map_ch1, dqs_map[1], sizeof(dqs_map[1]));
}
 
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)
{
        static 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;
        mem_cfg = &mupd->FspmConfig;
 
        mainboard_fill_dq_map_data(&mem_cfg->DqByteMapCh0,
                                   &mem_cfg->DqByteMapCh1);
        mainboard_fill_dqs_map_data(&mem_cfg->DqsMapCpu2DramCh0,
                                    &mem_cfg->DqsMapCpu2DramCh1);
        mainboard_fill_rcomp_res_data(&mem_cfg->RcompResistor);
        mainboard_fill_rcomp_strength_data(&mem_cfg->RcompTarget);
 
        struct spd_block blk = {
                .addr_map = { 0x50, 0x52, },
        };
 
        mem_cfg->DqPinsInterleaved = 1;
        mem_cfg->CaVrefConfig = 2;
 
        get_spd_smbus(&blk);
        dump_spd_info(&blk);
 
        mem_cfg->MemorySpdDataLen = blk.len;
        mem_cfg->MemorySpdPtr00 = (uintptr_t)blk.spd_array[0];
        mem_cfg->MemorySpdPtr10 = (uintptr_t)blk.spd_array[1];
}