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/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <fsl_ddr_sdram.h>
#include <fsl_ddr_dimm_params.h>
#include "ddr.h"
#ifdef CONFIG_FSL_DEEP_SLEEP
#include <fsl_sleep.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
void fsl_ddr_board_options(memctl_options_t *popts,
dimm_params_t *pdimm,
unsigned int ctrl_num)
{
const struct board_specific_parameters *pbsp, *pbsp_highest = NULL;
ulong ddr_freq;
if (ctrl_num > 1) {
printf("Not supported controller number %d\n", ctrl_num);
return;
}
if (!pdimm->n_ranks)
return;
pbsp = udimms[0];
/* Get clk_adjust, wrlvl_start, wrlvl_ctl, according to the board ddr
* freqency and n_banks specified in board_specific_parameters table.
*/
ddr_freq = get_ddr_freq(0) / 1000000;
while (pbsp->datarate_mhz_high) {
if (pbsp->n_ranks == pdimm->n_ranks) {
if (ddr_freq <= pbsp->datarate_mhz_high) {
popts->clk_adjust = pbsp->clk_adjust;
popts->wrlvl_start = pbsp->wrlvl_start;
popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
popts->cpo_override = pbsp->cpo_override;
popts->write_data_delay =
pbsp->write_data_delay;
goto found;
}
pbsp_highest = pbsp;
}
pbsp++;
}
if (pbsp_highest) {
printf("Error: board specific timing not found for %lu MT/s\n",
ddr_freq);
printf("Trying to use the highest speed (%u) parameters\n",
pbsp_highest->datarate_mhz_high);
popts->clk_adjust = pbsp_highest->clk_adjust;
popts->wrlvl_start = pbsp_highest->wrlvl_start;
popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
} else {
panic("DIMM is not supported by this board");
}
found:
debug("Found timing match: n_ranks %d, data rate %d, rank_gb %d\n",
pbsp->n_ranks, pbsp->datarate_mhz_high, pbsp->rank_gb);
/* force DDR bus width to 32 bits */
popts->data_bus_width = 1;
popts->otf_burst_chop_en = 0;
popts->burst_length = DDR_BL8;
/*
* Factors to consider for half-strength driver enable:
* - number of DIMMs installed
*/
popts->half_strength_driver_enable = 1;
/*
* Write leveling override
*/
popts->wrlvl_override = 1;
popts->wrlvl_sample = 0xf;
/*
* Rtt and Rtt_WR override
*/
popts->rtt_override = 0;
/* Enable ZQ calibration */
popts->zq_en = 1;
popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_80ohm);
popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_80ohm) |
DDR_CDR2_VREF_OVRD(70); /* Vref = 70% */
}
/* DDR model number: MT40A512M8HX-093E */
#ifdef CONFIG_SYS_DDR_RAW_TIMING
dimm_params_t ddr_raw_timing = {
.n_ranks = 1,
.rank_density = 2147483648u,
.capacity = 2147483648u,
.primary_sdram_width = 32,
.ec_sdram_width = 0,
.registered_dimm = 0,
.mirrored_dimm = 0,
.n_row_addr = 15,
.n_col_addr = 10,
.bank_addr_bits = 0,
.bank_group_bits = 2,
.edc_config = 0,
.burst_lengths_bitmask = 0x0c,
.tckmin_x_ps = 938,
.tckmax_ps = 1500,
.caslat_x = 0x000DFA00,
.taa_ps = 13500,
.trcd_ps = 13500,
.trp_ps = 13500,
.tras_ps = 33000,
.trc_ps = 46500,
.trfc1_ps = 260000,
.trfc2_ps = 160000,
.trfc4_ps = 110000,
.tfaw_ps = 21000,
.trrds_ps = 3700,
.trrdl_ps = 5300,
.tccdl_ps = 5355,
.refresh_rate_ps = 7800000,
.dq_mapping[0] = 0x0,
.dq_mapping[1] = 0x0,
.dq_mapping[2] = 0x0,
.dq_mapping[3] = 0x0,
.dq_mapping[4] = 0x0,
.dq_mapping[5] = 0x0,
.dq_mapping[6] = 0x0,
.dq_mapping[7] = 0x0,
.dq_mapping[8] = 0x0,
.dq_mapping[9] = 0x0,
.dq_mapping[10] = 0x0,
.dq_mapping[11] = 0x0,
.dq_mapping[12] = 0x0,
.dq_mapping[13] = 0x0,
.dq_mapping[14] = 0x0,
.dq_mapping[15] = 0x0,
.dq_mapping[16] = 0x0,
.dq_mapping[17] = 0x0,
.dq_mapping_ors = 0,
};
int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
unsigned int controller_number,
unsigned int dimm_number)
{
static const char dimm_model[] = "Fixed DDR on board";
if (((controller_number == 0) && (dimm_number == 0)) ||
((controller_number == 1) && (dimm_number == 0))) {
memcpy(pdimm, &ddr_raw_timing, sizeof(dimm_params_t));
memset(pdimm->mpart, 0, sizeof(pdimm->mpart));
memcpy(pdimm->mpart, dimm_model, sizeof(dimm_model) - 1);
}
return 0;
}
#endif
phys_size_t initdram(int board_type)
{
phys_size_t dram_size;
#if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_SPL)
puts("Initializing DDR....\n");
dram_size = fsl_ddr_sdram();
#else
dram_size = fsl_ddr_sdram_size();
#endif
#ifdef CONFIG_FSL_DEEP_SLEEP
fsl_dp_ddr_restore();
#endif
return dram_size;
}
void dram_init_banksize(void)
{
gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
gd->bd->bi_dram[0].size = gd->ram_size;
}
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