src/soc/intel/meteorlake/meminit.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 #include <console/console.h>
   4 #include <fsp/util.h>
   5 #include <soc/meminit.h>
   6 #include <string.h>
   7
   8 #define LPX_PHYSICAL_CH_WIDTH           16
   9 #define LPX_CHANNELS                    CHANNEL_COUNT(LPX_PHYSICAL_CH_WIDTH)
  10
  11 #define DDR5_PHYSICAL_CH_WIDTH          32
  12 #define DDR5_CHANNELS                   CHANNEL_COUNT(DDR5_PHYSICAL_CH_WIDTH)
  13
  14 static void set_rcomp_config(FSP_M_CONFIG *mem_cfg, const struct mb_cfg *mb_cfg)
  15 {
  16         if (mb_cfg->rcomp.resistor != 0)
  17                 mem_cfg->RcompResistor = mb_cfg->rcomp.resistor;
  18
  19         for (size_t i = 0; i < ARRAY_SIZE(mem_cfg->RcompTarget); i++) {
  20                 if (mb_cfg->rcomp.targets[i] != 0)
  21                         mem_cfg->RcompTarget[i] = mb_cfg->rcomp.targets[i];
  22         }
  23 }
  24
  25 static void meminit_lp5x(FSP_M_CONFIG *mem_cfg, const struct mem_lp5x_config *lp5x_config)
  26 {
  27         mem_cfg->DqPinsInterleaved = 0;
  28         mem_cfg->Lp5CccConfig = lp5x_config->ccc_config;
  29 }
  30
  31 static void meminit_ddr(FSP_M_CONFIG *mem_cfg, const struct mem_ddr_config *ddr_config)
  32 {
  33         mem_cfg->DqPinsInterleaved = ddr_config->dq_pins_interleaved;
  34 }
  35
  36 static const struct soc_mem_cfg soc_mem_cfg[] = {
  37         [MEM_TYPE_DDR5] = {
  38                 .num_phys_channels = DDR5_CHANNELS,
  39                 .phys_to_mrc_map = {
  40                         [0] = 0,
  41                         [1] = 1,
  42                         [2] = 4,
  43                         [3] = 5,
  44                 },
  45                 .md_phy_masks = {
  46                         /*
  47                          * Physical channels 0 and 1 are populated in case of
  48                          * half-populated configurations.
  49                          */
  50                         .half_channel = BIT(0) | BIT(1),
  51                         /* In mixed topologies, channels 2 and 3 are always memory-down. */
  52                         .mixed_topo = BIT(2) | BIT(3),
  53                 },
  54         },
  55         [MEM_TYPE_LP5X] = {
  56                 .num_phys_channels = LPX_CHANNELS,
  57                 .phys_to_mrc_map = {
  58                         [0] = 0,
  59                         [1] = 1,
  60                         [2] = 2,
  61                         [3] = 3,
  62                         [4] = 4,
  63                         [5] = 5,
  64                         [6] = 6,
  65                         [7] = 7,
  66                 },
  67                 .md_phy_masks = {
  68                         /*
  69                          * Physical channels 0, 1, 2 and 3 are populated in case of
  70                          * half-populated configurations.
  71                          */
  72                         .half_channel = BIT(0) | BIT(1) | BIT(2) | BIT(3),
  73                         /* LP5x does not support mixed topologies. */
  74                 },
  75         },
  76 };
  77
  78 static void mem_init_spd_upds(FSP_M_CONFIG *mem_cfg, const struct mem_channel_data *data)
  79 {
  80         efi_uintn_t *spd_upds[MRC_CHANNELS][CONFIG_DIMMS_PER_CHANNEL] = {
  81                 [0] = { &mem_cfg->MemorySpdPtr000, &mem_cfg->MemorySpdPtr001, },
  82                 [1] = { &mem_cfg->MemorySpdPtr010, &mem_cfg->MemorySpdPtr011, },
  83                 [2] = { &mem_cfg->MemorySpdPtr020, &mem_cfg->MemorySpdPtr021, },
  84                 [3] = { &mem_cfg->MemorySpdPtr030, &mem_cfg->MemorySpdPtr031, },
  85                 [4] = { &mem_cfg->MemorySpdPtr100, &mem_cfg->MemorySpdPtr101, },
  86                 [5] = { &mem_cfg->MemorySpdPtr110, &mem_cfg->MemorySpdPtr111, },
  87                 [6] = { &mem_cfg->MemorySpdPtr120, &mem_cfg->MemorySpdPtr121, },
  88                 [7] = { &mem_cfg->MemorySpdPtr130, &mem_cfg->MemorySpdPtr131, },
  89         };
  90         uint8_t *disable_channel_upds[MRC_CHANNELS] = {
  91                 &mem_cfg->DisableMc0Ch0,
  92                 &mem_cfg->DisableMc0Ch1,
  93                 &mem_cfg->DisableMc0Ch2,
  94                 &mem_cfg->DisableMc0Ch3,
  95                 &mem_cfg->DisableMc1Ch0,
  96                 &mem_cfg->DisableMc1Ch1,
  97                 &mem_cfg->DisableMc1Ch2,
  98                 &mem_cfg->DisableMc1Ch3,
  99         };
 100         size_t ch, dimm;
 101
 102         mem_cfg->MemorySpdDataLen = data->spd_len;
 103
 104         for (ch = 0; ch < MRC_CHANNELS; ch++) {
 105                 uint8_t *disable_channel_ptr = disable_channel_upds[ch];
 106                 bool enable_channel = 0;
 107
 108                 for (dimm = 0; dimm < CONFIG_DIMMS_PER_CHANNEL; dimm++) {
 109                         efi_uintn_t *spd_ptr = spd_upds[ch][dimm];
 110
 111                         *spd_ptr = data->spd[ch][dimm];
 112                         if (*spd_ptr)
 113                                 enable_channel = 1;
 114                 }
 115                 *disable_channel_ptr = !enable_channel;
 116         }
 117 }
 118
 119 static void mem_init_dq_dqs_upds(void *upds[MRC_CHANNELS], const void *map, size_t upd_size,
 120                                 const struct mem_channel_data *data, bool auto_detect)
 121 {
 122         size_t i;
 123
 124         for (i = 0; i < MRC_CHANNELS; i++, map += upd_size) {
 125                 if (auto_detect ||
 126                         !channel_is_populated(i, MRC_CHANNELS, data->ch_population_flags))
 127                         memset(upds[i], 0, upd_size);
 128                 else
 129                         memcpy(upds[i], map, upd_size);
 130         }
 131 }
 132
 133 static void mem_init_dq_upds(FSP_M_CONFIG *mem_cfg, const struct mem_channel_data *data,
 134                                 const struct mb_cfg *mb_cfg, bool auto_detect)
 135 {
 136         void *dq_upds[MRC_CHANNELS] = {
 137                 &mem_cfg->DqMapCpu2DramMc0Ch0,
 138                 &mem_cfg->DqMapCpu2DramMc0Ch1,
 139                 &mem_cfg->DqMapCpu2DramMc0Ch2,
 140                 &mem_cfg->DqMapCpu2DramMc0Ch3,
 141                 &mem_cfg->DqMapCpu2DramMc1Ch0,
 142                 &mem_cfg->DqMapCpu2DramMc1Ch1,
 143                 &mem_cfg->DqMapCpu2DramMc1Ch2,
 144                 &mem_cfg->DqMapCpu2DramMc1Ch3,
 145         };
 146
 147         const size_t upd_size = sizeof(mem_cfg->DqMapCpu2DramMc0Ch0);
 148
 149         _Static_assert(sizeof(mem_cfg->DqMapCpu2DramMc0Ch0) == CONFIG_MRC_CHANNEL_WIDTH,
 150                        "Incorrect DQ UPD size!");
 151
 152         mem_init_dq_dqs_upds(dq_upds, mb_cfg->dq_map, upd_size, data, auto_detect);
 153 }
 154
 155 static void mem_init_dqs_upds(FSP_M_CONFIG *mem_cfg, const struct mem_channel_data *data,
 156                                 const struct mb_cfg *mb_cfg, bool auto_detect)
 157 {
 158         void *dqs_upds[MRC_CHANNELS] = {
 159                 &mem_cfg->DqsMapCpu2DramMc0Ch0,
 160                 &mem_cfg->DqsMapCpu2DramMc0Ch1,
 161                 &mem_cfg->DqsMapCpu2DramMc0Ch2,
 162                 &mem_cfg->DqsMapCpu2DramMc0Ch3,
 163                 &mem_cfg->DqsMapCpu2DramMc1Ch0,
 164                 &mem_cfg->DqsMapCpu2DramMc1Ch1,
 165                 &mem_cfg->DqsMapCpu2DramMc1Ch2,
 166                 &mem_cfg->DqsMapCpu2DramMc1Ch3,
 167         };
 168
 169         const size_t upd_size = sizeof(mem_cfg->DqsMapCpu2DramMc0Ch0);
 170
 171         _Static_assert(sizeof(mem_cfg->DqsMapCpu2DramMc0Ch0) == CONFIG_MRC_CHANNEL_WIDTH / 8,
 172                        "Incorrect DQS UPD size!");
 173
 174         mem_init_dq_dqs_upds(dqs_upds, mb_cfg->dqs_map, upd_size, data, auto_detect);
 175 }
 176
 177 #define DDR5_CH_DIMM_OFFSET(ch, dimm)        ((ch) * CONFIG_DIMMS_PER_CHANNEL + (dimm))
 178
 179 static void ddr5_fill_dimm_module_info(FSP_M_CONFIG *mem_cfg, const struct mb_cfg *mb_cfg,
 180                                         const struct mem_spd *spd_info)
 181 {
 182         for (size_t ch = 0; ch < soc_mem_cfg[MEM_TYPE_DDR5].num_phys_channels; ch++) {
 183                 for (size_t dimm = 0; dimm < CONFIG_DIMMS_PER_CHANNEL; dimm++) {
 184                         size_t mrc_ch = soc_mem_cfg[MEM_TYPE_DDR5].phys_to_mrc_map[ch];
 185                         mem_cfg->SpdAddressTable[DDR5_CH_DIMM_OFFSET(mrc_ch, dimm)] =
 186                                 spd_info->smbus[ch].addr_dimm[dimm] << 1;
 187                 }
 188         }
 189         mem_init_dq_upds(mem_cfg, NULL, mb_cfg, true);
 190         mem_init_dqs_upds(mem_cfg, NULL, mb_cfg, true);
 191 }
 192
 193 void memcfg_init(FSPM_UPD *memupd, const struct mb_cfg *mb_cfg,
 194                  const struct mem_spd *spd_info, bool half_populated)
 195 {
 196         struct mem_channel_data data;
 197         bool dq_dqs_auto_detect = false;
 198         FSP_M_CONFIG *mem_cfg = &memupd->FspmConfig;
 199
 200         mem_cfg->ECT = mb_cfg->ect;
 201         mem_cfg->UserBd = mb_cfg->UserBd;
 202         set_rcomp_config(mem_cfg, mb_cfg);
 203
 204         switch (mb_cfg->type) {
 205         case MEM_TYPE_DDR5:
 206                 meminit_ddr(mem_cfg, &mb_cfg->ddr_config);
 207                 dq_dqs_auto_detect = true;
 208                 /*
 209                 * TODO: Drop this workaround once SMBus driver in coreboot is updated to
 210                 * support DDR5 EEPROM reading.
 211                 */
 212                 if (spd_info->topo == MEM_TOPO_DIMM_MODULE) {
 213                         ddr5_fill_dimm_module_info(mem_cfg, mb_cfg, spd_info);
 214                         return;
 215                 }
 216                 break;
 217         case MEM_TYPE_LP5X:
 218                 meminit_lp5x(mem_cfg, &mb_cfg->lp5x_config);
 219                 break;
 220         default:
 221                 die("Unsupported memory type(%d)\n", mb_cfg->type);
 222         }
 223
 224         mem_populate_channel_data(memupd, &soc_mem_cfg[mb_cfg->type], spd_info,
 225                                          half_populated, &data);
 226         mem_init_spd_upds(mem_cfg, &data);
 227         mem_init_dq_upds(mem_cfg, &data, mb_cfg, dq_dqs_auto_detect);
 228         mem_init_dqs_upds(mem_cfg, &data, mb_cfg, dq_dqs_auto_detect);
 229 }