romstage_fsp_params.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <assert.h>
#include <fsp/api.h>
#include <soc/romstage.h>
#include <soc/meminit.h>
 
static const struct mb_cfg ddr5_mem_config = {
        .type = MEM_TYPE_DDR5,
 
        .rcomp = {
                /* Baseboard uses only 100ohm Rcomp resistor */
                .resistor = 100,
 
                /* Baseboard Rcomp target values */
                .targets = { 50, 30, 30, 30, 27 },
        },
 
        .ect = true, /* Early Command Training */
 
        .UserBd = BOARD_TYPE_MOBILE,
 
        .LpDdrDqDqsReTraining = 1,
 
        .ddr_config = {
                .dq_pins_interleaved = false,
        }
};
 
void mainboard_memory_init_params(FSPM_UPD *memupd)
{
        const struct mb_cfg *mem_config = &ddr5_mem_config;
        const bool half_populated = false;
 
        const struct mem_spd dimm_module_spd_info = {
                .topo = MEM_TOPO_DIMM_MODULE,
                .smbus = {
                        [3] = {
                                .addr_dimm[0] = 0x52,
                                .addr_dimm[1] = 0x53,
                        },
                },
        };
 
        memcfg_init(memupd, mem_config, &dimm_module_spd_info, half_populated);
}