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/* SPDX-License-Identifier: GPL-2.0-only */
#include <cbmem.h>
#include <console/console.h>
#include <device/dram/ddr2.h>
#include <device/dram/ddr3.h>
#include <device/smbus_host.h>
#include <lib.h>
#include <memory_info.h>
#include <spd.h>
#include "gm45.h"
#include "chip.h"
static u8 get_dimm_mod_type(const sysinfo_t *sysinfo, const int idx)
{
if (sysinfo->spd_type == DDR2) {
return smbus_read_byte(sysinfo->spd_map[idx], 20) & SPD_DDR2_DIMM_TYPE_MASK;
} else {
return smbus_read_byte(sysinfo->spd_map[idx], 3) & 0xf;
}
}
static void ddr3_read_ids(const sysinfo_t *sysinfo, struct dimm_info *dimm, const int idx)
{
const u8 addr = sysinfo->spd_map[idx];
for (int k = 0; k < SPD_DIMM_SERIAL_LEN; k++) {
dimm->serial[k] = smbus_read_byte(addr, SPD_DIMM_SERIAL_NUM + k);
}
for (int k = 0; k < SPD_DIMM_PART_LEN; k++) {
dimm->module_part_number[k] = smbus_read_byte(addr, SPD_DIMM_PART_NUM + k);
}
dimm->mod_id = (smbus_read_byte(addr, SPD_DIMM_MOD_ID2) << 8) |
(smbus_read_byte(addr, SPD_DIMM_MOD_ID1) << 0);
}
static u32 get_mem_clock_mt(const int clock_index)
{
switch (clock_index) {
case MEM_CLOCK_1067MT: return 1067;
case MEM_CLOCK_800MT: return 800;
case MEM_CLOCK_667MT: return 667;
default: return 0;
}
}
void setup_sdram_meminfo(const sysinfo_t *sysinfo)
{
struct memory_info *mem_info = cbmem_add(CBMEM_ID_MEMINFO, sizeof(struct memory_info));
if (!mem_info)
die("Failed to add memory info to CBMEM.\n");
memset(mem_info, 0, sizeof(struct memory_info));
const u16 ddr_type = (sysinfo->spd_type == DDR2) ? MEMORY_TYPE_DDR2 : MEMORY_TYPE_DDR3;
const u32 ddr_freq_mt = get_mem_clock_mt(sysinfo->selected_timings.mem_clock);
int dimm_cnt = 0;
int ch;
FOR_EACH_POPULATED_CHANNEL(sysinfo->dimms, ch) {
struct dimm_info *dimm = &mem_info->dimm[dimm_cnt];
const int idx = ch * 2;
const int ranks = sysinfo->dimms[ch].ranks;
dimm->dimm_size = (256 << sysinfo->dimms[ch].chip_capacity) * ranks;
dimm->ddr_type = ddr_type;
dimm->ddr_frequency = ddr_freq_mt;
dimm->rank_per_dimm = ranks;
dimm->channel_num = ch;
dimm->dimm_num = 0;
dimm->bank_locator = ch;
/* TODO: Handle DDR2 SPDs */
if (sysinfo->spd_type == DDR3) {
ddr3_read_ids(sysinfo, dimm, idx);
}
dimm->mod_type = get_dimm_mod_type(sysinfo, idx);
dimm->bus_width = MEMORY_BUS_WIDTH_64;
dimm_cnt++;
}
mem_info->dimm_cnt = dimm_cnt;
mem_info->ecc_type = MEMORY_ARRAY_ECC_NONE;
mem_info->max_capacity_mib = 8192;
mem_info->number_of_devices = 2;
}
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