spd_util.c

Go to the documentation of this file.

/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <stdint.h>
#include <string.h>
#include "spd.h"
 
void mainboard_fill_dq_map_data(void *dq_map_ch0, void *dq_map_ch1)
{
        /* DQ byte map */
        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]));
}
 
void mainboard_fill_dqs_map_data(void *dqs_map_ch0, void *dqs_map_ch1)
{
        /* DQS CPU<>DRAM map */
        const u8 dqs_map[2][8] = {
                { 0, 1, 3, 2, 4, 5, 6, 7 },
                { 1, 0, 4, 5, 2, 3, 6, 7 } };
        memcpy(dqs_map_ch0, dqs_map[0], sizeof(dqs_map[0]));
        memcpy(dqs_map_ch1, dqs_map[1], sizeof(dqs_map[1]));
}
 
void mainboard_fill_rcomp_res_data(void *rcomp_ptr)
{
        /* Rcomp resistor */
        const u16 RcompResistor[3] = { 121, 81, 100 };
        memcpy(rcomp_ptr, RcompResistor, sizeof(RcompResistor));
}
 
void mainboard_fill_rcomp_strength_data(void *rcomp_strength_ptr)
{
        /* Rcomp target */
        static const u16 RcompTarget[5] = { 100, 40, 20, 20, 26 };
        memcpy(rcomp_strength_ptr, RcompTarget, sizeof(RcompTarget));
}