board/freescale/ls1043ardb/ddr.c

   1 /*
   2  * Copyright 2015 Freescale Semiconductor, Inc.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <fsl_ddr_sdram.h>
   9 #include <fsl_ddr_dimm_params.h>
  10 #include "ddr.h"
  11 #ifdef CONFIG_FSL_DEEP_SLEEP
  12 #include <fsl_sleep.h>
  13 #endif
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 void fsl_ddr_board_options(memctl_options_t *popts,
  18                            dimm_params_t *pdimm,
  19                            unsigned int ctrl_num)
  20 {
  21         const struct board_specific_parameters *pbsp, *pbsp_highest = NULL;
  22         ulong ddr_freq;
  23
  24         if (ctrl_num > 1) {
  25                 printf("Not supported controller number %d\n", ctrl_num);
  26                 return;
  27         }
  28         if (!pdimm->n_ranks)
  29                 return;
  30
  31         pbsp = udimms[0];
  32
  33         /* Get clk_adjust, wrlvl_start, wrlvl_ctl, according to the board ddr
  34          * freqency and n_banks specified in board_specific_parameters table.
  35          */
  36         ddr_freq = get_ddr_freq(0) / 1000000;
  37         while (pbsp->datarate_mhz_high) {
  38                 if (pbsp->n_ranks == pdimm->n_ranks) {
  39                         if (ddr_freq <= pbsp->datarate_mhz_high) {
  40                                 popts->clk_adjust = pbsp->clk_adjust;
  41                                 popts->wrlvl_start = pbsp->wrlvl_start;
  42                                 popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
  43                                 popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
  44                                 popts->cpo_override = pbsp->cpo_override;
  45                                 popts->write_data_delay =
  46                                         pbsp->write_data_delay;
  47                                 goto found;
  48                         }
  49                         pbsp_highest = pbsp;
  50                 }
  51                 pbsp++;
  52         }
  53
  54         if (pbsp_highest) {
  55                 printf("Error: board specific timing not found for %lu MT/s\n",
  56                        ddr_freq);
  57                 printf("Trying to use the highest speed (%u) parameters\n",
  58                        pbsp_highest->datarate_mhz_high);
  59                 popts->clk_adjust = pbsp_highest->clk_adjust;
  60                 popts->wrlvl_start = pbsp_highest->wrlvl_start;
  61                 popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
  62                 popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
  63         } else {
  64                 panic("DIMM is not supported by this board");
  65         }
  66 found:
  67         debug("Found timing match: n_ranks %d, data rate %d, rank_gb %d\n",
  68               pbsp->n_ranks, pbsp->datarate_mhz_high, pbsp->rank_gb);
  69
  70         /* force DDR bus width to 32 bits */
  71         popts->data_bus_width = 1;
  72         popts->otf_burst_chop_en = 0;
  73         popts->burst_length = DDR_BL8;
  74
  75         /*
  76          * Factors to consider for half-strength driver enable:
  77          *      - number of DIMMs installed
  78          */
  79         popts->half_strength_driver_enable = 1;
  80         /*
  81          * Write leveling override
  82          */
  83         popts->wrlvl_override = 1;
  84         popts->wrlvl_sample = 0xf;
  85
  86         /*
  87          * Rtt and Rtt_WR override
  88          */
  89         popts->rtt_override = 0;
  90
  91         /* Enable ZQ calibration */
  92         popts->zq_en = 1;
  93
  94         popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_80ohm);
  95         popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_80ohm) |
  96                           DDR_CDR2_VREF_OVRD(70);       /* Vref = 70% */
  97 }
  98
  99 /* DDR model number: MT40A512M8HX-093E */
 100 #ifdef CONFIG_SYS_DDR_RAW_TIMING
 101 dimm_params_t ddr_raw_timing = {
 102         .n_ranks = 1,
 103         .rank_density = 2147483648u,
 104         .capacity = 2147483648u,
 105         .primary_sdram_width = 32,
 106         .ec_sdram_width = 0,
 107         .registered_dimm = 0,
 108         .mirrored_dimm = 0,
 109         .n_row_addr = 15,
 110         .n_col_addr = 10,
 111         .bank_addr_bits = 0,
 112         .bank_group_bits = 2,
 113         .edc_config = 0,
 114         .burst_lengths_bitmask = 0x0c,
 115
 116         .tckmin_x_ps = 938,
 117         .tckmax_ps = 1500,
 118         .caslat_x = 0x000DFA00,
 119         .taa_ps = 13500,
 120         .trcd_ps = 13500,
 121         .trp_ps = 13500,
 122         .tras_ps = 33000,
 123         .trc_ps = 46500,
 124         .trfc1_ps = 260000,
 125         .trfc2_ps = 160000,
 126         .trfc4_ps = 110000,
 127         .tfaw_ps = 21000,
 128         .trrds_ps = 3700,
 129         .trrdl_ps = 5300,
 130         .tccdl_ps = 5355,
 131         .refresh_rate_ps = 7800000,
 132         .dq_mapping[0] = 0x0,
 133         .dq_mapping[1] = 0x0,
 134         .dq_mapping[2] = 0x0,
 135         .dq_mapping[3] = 0x0,
 136         .dq_mapping[4] = 0x0,
 137         .dq_mapping[5] = 0x0,
 138         .dq_mapping[6] = 0x0,
 139         .dq_mapping[7] = 0x0,
 140         .dq_mapping[8] = 0x0,
 141         .dq_mapping[9] = 0x0,
 142         .dq_mapping[10] = 0x0,
 143         .dq_mapping[11] = 0x0,
 144         .dq_mapping[12] = 0x0,
 145         .dq_mapping[13] = 0x0,
 146         .dq_mapping[14] = 0x0,
 147         .dq_mapping[15] = 0x0,
 148         .dq_mapping[16] = 0x0,
 149         .dq_mapping[17] = 0x0,
 150         .dq_mapping_ors = 0,
 151 };
 152
 153 int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
 154                             unsigned int controller_number,
 155                             unsigned int dimm_number)
 156 {
 157         static const char dimm_model[] = "Fixed DDR on board";
 158
 159         if (((controller_number == 0) && (dimm_number == 0)) ||
 160             ((controller_number == 1) && (dimm_number == 0))) {
 161                 memcpy(pdimm, &ddr_raw_timing, sizeof(dimm_params_t));
 162                 memset(pdimm->mpart, 0, sizeof(pdimm->mpart));
 163                 memcpy(pdimm->mpart, dimm_model, sizeof(dimm_model) - 1);
 164         }
 165
 166         return 0;
 167 }
 168 #endif
 169
 170 phys_size_t initdram(int board_type)
 171 {
 172         phys_size_t dram_size;
 173
 174 #if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_SPL)
 175         puts("Initializing DDR....\n");
 176         dram_size = fsl_ddr_sdram();
 177 #else
 178         dram_size =  fsl_ddr_sdram_size();
 179 #endif
 180 #ifdef CONFIG_FSL_DEEP_SLEEP
 181         fsl_dp_ddr_restore();
 182 #endif
 183
 184         return dram_size;
 185 }
 186
 187 void dram_init_banksize(void)
 188 {
 189         /*
 190          * gd->secure_ram tracks the location of secure memory.
 191          * It was set as if the memory starts from 0.
 192          * The address needs to add the offset of its bank.
 193          */
 194         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 195         if (gd->ram_size > CONFIG_SYS_DDR_BLOCK1_SIZE) {
 196                 gd->bd->bi_dram[0].size = CONFIG_SYS_DDR_BLOCK1_SIZE;
 197                 gd->bd->bi_dram[1].start = CONFIG_SYS_DDR_BLOCK2_BASE;
 198                 gd->bd->bi_dram[1].size = gd->ram_size -
 199                                           CONFIG_SYS_DDR_BLOCK1_SIZE;
 200 #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
 201                 gd->secure_ram = gd->bd->bi_dram[1].start +
 202                                  gd->secure_ram -
 203                                  CONFIG_SYS_DDR_BLOCK1_SIZE;
 204                 gd->secure_ram |= MEM_RESERVE_SECURE_MAINTAINED;
 205 #endif
 206         } else {
 207                 gd->bd->bi_dram[0].size = gd->ram_size;
 208 #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
 209                 gd->secure_ram = gd->bd->bi_dram[0].start + gd->secure_ram;
 210                 gd->secure_ram |= MEM_RESERVE_SECURE_MAINTAINED;
 211 #endif
 212         }
 213 }