drivers/ddr/fsl/fsl_ddr_gen4.c

   1 /*
   2  * Copyright 2014-2015 Freescale Semiconductor, Inc.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <asm/io.h>
   9 #include <fsl_ddr_sdram.h>
  10 #include <asm/processor.h>
  11 #include <fsl_immap.h>
  12 #include <fsl_ddr.h>
  13 #include <fsl_errata.h>
  14
  15 #ifdef CONFIG_SYS_FSL_ERRATUM_A008511
  16 static void set_wait_for_bits_clear(void *ptr, u32 value, u32 bits)
  17 {
  18         int timeout = 1000;
  19
  20         ddr_out32(ptr, value);
  21
  22         while (ddr_in32(ptr) & bits) {
  23                 udelay(100);
  24                 timeout--;
  25         }
  26         if (timeout <= 0)
  27                 puts("Error: A007865 wait for clear timeout.\n");
  28 }
  29 #endif /* CONFIG_SYS_FSL_ERRATUM_A008511 */
  30
  31 #if (CONFIG_CHIP_SELECTS_PER_CTRL > 4)
  32 #error Invalid setting for CONFIG_CHIP_SELECTS_PER_CTRL
  33 #endif
  34
  35 /*
  36  * regs has the to-be-set values for DDR controller registers
  37  * ctrl_num is the DDR controller number
  38  * step: 0 goes through the initialization in one pass
  39  *       1 sets registers and returns before enabling controller
  40  *       2 resumes from step 1 and continues to initialize
  41  * Dividing the initialization to two steps to deassert DDR reset signal
  42  * to comply with JEDEC specs for RDIMMs.
  43  */
  44 void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
  45                              unsigned int ctrl_num, int step)
  46 {
  47         unsigned int i, bus_width;
  48         struct ccsr_ddr __iomem *ddr;
  49         u32 temp_sdram_cfg;
  50         u32 total_gb_size_per_controller;
  51         int timeout;
  52 #ifdef CONFIG_SYS_FSL_ERRATUM_A008511
  53         u32 temp32, mr6;
  54         u32 vref_seq1[3] = {0x80, 0x96, 0x16};  /* for range 1 */
  55         u32 vref_seq2[3] = {0xc0, 0xf0, 0x70};  /* for range 2 */
  56         u32 *vref_seq = vref_seq1;
  57 #endif
  58 #ifdef CONFIG_SYS_FSL_ERRATUM_A009942
  59         ulong ddr_freq;
  60         u32 tmp;
  61 #endif
  62 #ifdef CONFIG_FSL_DDR_BIST
  63         u32 mtcr, err_detect, err_sbe;
  64         u32 cs0_bnds, cs1_bnds, cs2_bnds, cs3_bnds, cs0_config;
  65 #endif
  66 #ifdef CONFIG_FSL_DDR_BIST
  67         char buffer[CONFIG_SYS_CBSIZE];
  68 #endif
  69
  70         switch (ctrl_num) {
  71         case 0:
  72                 ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR;
  73                 break;
  74 #if defined(CONFIG_SYS_FSL_DDR2_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 1)
  75         case 1:
  76                 ddr = (void *)CONFIG_SYS_FSL_DDR2_ADDR;
  77                 break;
  78 #endif
  79 #if defined(CONFIG_SYS_FSL_DDR3_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 2)
  80         case 2:
  81                 ddr = (void *)CONFIG_SYS_FSL_DDR3_ADDR;
  82                 break;
  83 #endif
  84 #if defined(CONFIG_SYS_FSL_DDR4_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 3)
  85         case 3:
  86                 ddr = (void *)CONFIG_SYS_FSL_DDR4_ADDR;
  87                 break;
  88 #endif
  89         default:
  90                 printf("%s unexpected ctrl_num = %u\n", __func__, ctrl_num);
  91                 return;
  92         }
  93
  94         if (step == 2)
  95                 goto step2;
  96
  97         if (regs->ddr_eor)
  98                 ddr_out32(&ddr->eor, regs->ddr_eor);
  99
 100         ddr_out32(&ddr->sdram_clk_cntl, regs->ddr_sdram_clk_cntl);
 101
 102         for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
 103                 if (i == 0) {
 104                         ddr_out32(&ddr->cs0_bnds, regs->cs[i].bnds);
 105                         ddr_out32(&ddr->cs0_config, regs->cs[i].config);
 106                         ddr_out32(&ddr->cs0_config_2, regs->cs[i].config_2);
 107
 108                 } else if (i == 1) {
 109                         ddr_out32(&ddr->cs1_bnds, regs->cs[i].bnds);
 110                         ddr_out32(&ddr->cs1_config, regs->cs[i].config);
 111                         ddr_out32(&ddr->cs1_config_2, regs->cs[i].config_2);
 112
 113                 } else if (i == 2) {
 114                         ddr_out32(&ddr->cs2_bnds, regs->cs[i].bnds);
 115                         ddr_out32(&ddr->cs2_config, regs->cs[i].config);
 116                         ddr_out32(&ddr->cs2_config_2, regs->cs[i].config_2);
 117
 118                 } else if (i == 3) {
 119                         ddr_out32(&ddr->cs3_bnds, regs->cs[i].bnds);
 120                         ddr_out32(&ddr->cs3_config, regs->cs[i].config);
 121                         ddr_out32(&ddr->cs3_config_2, regs->cs[i].config_2);
 122                 }
 123         }
 124
 125         ddr_out32(&ddr->timing_cfg_3, regs->timing_cfg_3);
 126         ddr_out32(&ddr->timing_cfg_0, regs->timing_cfg_0);
 127         ddr_out32(&ddr->timing_cfg_1, regs->timing_cfg_1);
 128         ddr_out32(&ddr->timing_cfg_2, regs->timing_cfg_2);
 129         ddr_out32(&ddr->timing_cfg_4, regs->timing_cfg_4);
 130         ddr_out32(&ddr->timing_cfg_5, regs->timing_cfg_5);
 131         ddr_out32(&ddr->timing_cfg_6, regs->timing_cfg_6);
 132         ddr_out32(&ddr->timing_cfg_7, regs->timing_cfg_7);
 133         ddr_out32(&ddr->timing_cfg_8, regs->timing_cfg_8);
 134         ddr_out32(&ddr->timing_cfg_9, regs->timing_cfg_9);
 135         ddr_out32(&ddr->ddr_zq_cntl, regs->ddr_zq_cntl);
 136         ddr_out32(&ddr->dq_map_0, regs->dq_map_0);
 137         ddr_out32(&ddr->dq_map_1, regs->dq_map_1);
 138         ddr_out32(&ddr->dq_map_2, regs->dq_map_2);
 139         ddr_out32(&ddr->dq_map_3, regs->dq_map_3);
 140         ddr_out32(&ddr->sdram_cfg_3, regs->ddr_sdram_cfg_3);
 141         ddr_out32(&ddr->sdram_mode, regs->ddr_sdram_mode);
 142         ddr_out32(&ddr->sdram_mode_2, regs->ddr_sdram_mode_2);
 143         ddr_out32(&ddr->sdram_mode_3, regs->ddr_sdram_mode_3);
 144         ddr_out32(&ddr->sdram_mode_4, regs->ddr_sdram_mode_4);
 145         ddr_out32(&ddr->sdram_mode_5, regs->ddr_sdram_mode_5);
 146         ddr_out32(&ddr->sdram_mode_6, regs->ddr_sdram_mode_6);
 147         ddr_out32(&ddr->sdram_mode_7, regs->ddr_sdram_mode_7);
 148         ddr_out32(&ddr->sdram_mode_8, regs->ddr_sdram_mode_8);
 149         ddr_out32(&ddr->sdram_mode_9, regs->ddr_sdram_mode_9);
 150         ddr_out32(&ddr->sdram_mode_10, regs->ddr_sdram_mode_10);
 151         ddr_out32(&ddr->sdram_mode_11, regs->ddr_sdram_mode_11);
 152         ddr_out32(&ddr->sdram_mode_12, regs->ddr_sdram_mode_12);
 153         ddr_out32(&ddr->sdram_mode_13, regs->ddr_sdram_mode_13);
 154         ddr_out32(&ddr->sdram_mode_14, regs->ddr_sdram_mode_14);
 155         ddr_out32(&ddr->sdram_mode_15, regs->ddr_sdram_mode_15);
 156         ddr_out32(&ddr->sdram_mode_16, regs->ddr_sdram_mode_16);
 157         ddr_out32(&ddr->sdram_md_cntl, regs->ddr_sdram_md_cntl);
 158         ddr_out32(&ddr->sdram_interval, regs->ddr_sdram_interval);
 159         ddr_out32(&ddr->sdram_data_init, regs->ddr_data_init);
 160         ddr_out32(&ddr->ddr_wrlvl_cntl, regs->ddr_wrlvl_cntl);
 161 #ifndef CONFIG_SYS_FSL_DDR_EMU
 162         /*
 163          * Skip these two registers if running on emulator
 164          * because emulator doesn't have skew between bytes.
 165          */
 166
 167         if (regs->ddr_wrlvl_cntl_2)
 168                 ddr_out32(&ddr->ddr_wrlvl_cntl_2, regs->ddr_wrlvl_cntl_2);
 169         if (regs->ddr_wrlvl_cntl_3)
 170                 ddr_out32(&ddr->ddr_wrlvl_cntl_3, regs->ddr_wrlvl_cntl_3);
 171 #endif
 172
 173         ddr_out32(&ddr->ddr_sr_cntr, regs->ddr_sr_cntr);
 174         ddr_out32(&ddr->ddr_sdram_rcw_1, regs->ddr_sdram_rcw_1);
 175         ddr_out32(&ddr->ddr_sdram_rcw_2, regs->ddr_sdram_rcw_2);
 176         ddr_out32(&ddr->ddr_sdram_rcw_3, regs->ddr_sdram_rcw_3);
 177         ddr_out32(&ddr->ddr_sdram_rcw_4, regs->ddr_sdram_rcw_4);
 178         ddr_out32(&ddr->ddr_sdram_rcw_5, regs->ddr_sdram_rcw_5);
 179         ddr_out32(&ddr->ddr_sdram_rcw_6, regs->ddr_sdram_rcw_6);
 180         ddr_out32(&ddr->ddr_cdr1, regs->ddr_cdr1);
 181 #ifdef CONFIG_DEEP_SLEEP
 182         if (is_warm_boot()) {
 183                 ddr_out32(&ddr->sdram_cfg_2,
 184                           regs->ddr_sdram_cfg_2 & ~SDRAM_CFG2_D_INIT);
 185                 ddr_out32(&ddr->init_addr, CONFIG_SYS_SDRAM_BASE);
 186                 ddr_out32(&ddr->init_ext_addr, DDR_INIT_ADDR_EXT_UIA);
 187
 188                 /* DRAM VRef will not be trained */
 189                 ddr_out32(&ddr->ddr_cdr2,
 190                           regs->ddr_cdr2 & ~DDR_CDR2_VREF_TRAIN_EN);
 191         } else
 192 #endif
 193         {
 194                 ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2);
 195                 ddr_out32(&ddr->init_addr, regs->ddr_init_addr);
 196                 ddr_out32(&ddr->init_ext_addr, regs->ddr_init_ext_addr);
 197                 ddr_out32(&ddr->ddr_cdr2, regs->ddr_cdr2);
 198         }
 199         ddr_out32(&ddr->err_disable, regs->err_disable);
 200         ddr_out32(&ddr->err_int_en, regs->err_int_en);
 201         for (i = 0; i < 32; i++) {
 202                 if (regs->debug[i]) {
 203                         debug("Write to debug_%d as %08x\n",
 204                               i+1, regs->debug[i]);
 205                         ddr_out32(&ddr->debug[i], regs->debug[i]);
 206                 }
 207         }
 208 #ifdef CONFIG_SYS_FSL_ERRATUM_A008378
 209         /* Erratum applies when accumulated ECC is used, or DBI is enabled */
 210 #define IS_ACC_ECC_EN(v) ((v) & 0x4)
 211 #define IS_DBI(v) ((((v) >> 12) & 0x3) == 0x2)
 212         if (has_erratum_a008378()) {
 213                 if (IS_ACC_ECC_EN(regs->ddr_sdram_cfg) ||
 214                     IS_DBI(regs->ddr_sdram_cfg_3))
 215                         ddr_setbits32(&ddr->debug[28], 0x9 << 20);
 216         }
 217 #endif
 218
 219 #ifdef CONFIG_SYS_FSL_ERRATUM_A008511
 220         /* Part 1 of 2 */
 221         /* This erraum only applies to verion 5.2.0 */
 222         if (fsl_ddr_get_version(ctrl_num) == 0x50200) {
 223                 /* Disable DRAM VRef training */
 224                 ddr_out32(&ddr->ddr_cdr2,
 225                           regs->ddr_cdr2 & ~DDR_CDR2_VREF_TRAIN_EN);
 226                 /* Disable deskew */
 227                 ddr_out32(&ddr->debug[28], 0x400);
 228                 /* Disable D_INIT */
 229                 ddr_out32(&ddr->sdram_cfg_2,
 230                           regs->ddr_sdram_cfg_2 & ~SDRAM_CFG2_D_INIT);
 231                 ddr_out32(&ddr->debug[25], 0x9000);
 232         }
 233 #endif
 234
 235 #ifdef CONFIG_SYS_FSL_ERRATUM_A009942
 236         ddr_freq = get_ddr_freq(ctrl_num) / 1000000;
 237         tmp = ddr_in32(&ddr->debug[28]);
 238         if (ddr_freq <= 1333)
 239                 ddr_out32(&ddr->debug[28], tmp | 0x0080006a);
 240         else if (ddr_freq <= 1600)
 241                 ddr_out32(&ddr->debug[28], tmp | 0x0070006f);
 242         else if (ddr_freq <= 1867)
 243                 ddr_out32(&ddr->debug[28], tmp | 0x00700076);
 244         else if (ddr_freq <= 2133)
 245                 ddr_out32(&ddr->debug[28], tmp | 0x0060007b);
 246 #endif
 247
 248         /*
 249          * For RDIMMs, JEDEC spec requires clocks to be stable before reset is
 250          * deasserted. Clocks start when any chip select is enabled and clock
 251          * control register is set. Because all DDR components are connected to
 252          * one reset signal, this needs to be done in two steps. Step 1 is to
 253          * get the clocks started. Step 2 resumes after reset signal is
 254          * deasserted.
 255          */
 256         if (step == 1) {
 257                 udelay(200);
 258                 return;
 259         }
 260
 261 step2:
 262         /* Set, but do not enable the memory */
 263         temp_sdram_cfg = regs->ddr_sdram_cfg;
 264         temp_sdram_cfg &= ~(SDRAM_CFG_MEM_EN);
 265         ddr_out32(&ddr->sdram_cfg, temp_sdram_cfg);
 266
 267         /*
 268          * 500 painful micro-seconds must elapse between
 269          * the DDR clock setup and the DDR config enable.
 270          * DDR2 need 200 us, and DDR3 need 500 us from spec,
 271          * we choose the max, that is 500 us for all of case.
 272          */
 273         udelay(500);
 274         mb();
 275         isb();
 276
 277 #ifdef CONFIG_DEEP_SLEEP
 278         if (is_warm_boot()) {
 279                 /* enter self-refresh */
 280                 temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg_2);
 281                 temp_sdram_cfg |= SDRAM_CFG2_FRC_SR;
 282                 ddr_out32(&ddr->sdram_cfg_2, temp_sdram_cfg);
 283                 /* do board specific memory setup */
 284                 board_mem_sleep_setup();
 285
 286                 temp_sdram_cfg = (ddr_in32(&ddr->sdram_cfg) | SDRAM_CFG_BI);
 287         } else
 288 #endif
 289                 temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg) & ~SDRAM_CFG_BI;
 290         /* Let the controller go */
 291         ddr_out32(&ddr->sdram_cfg, temp_sdram_cfg | SDRAM_CFG_MEM_EN);
 292         mb();
 293         isb();
 294
 295 #ifdef CONFIG_SYS_FSL_ERRATUM_A008511
 296         /* Part 2 of 2 */
 297         /* This erraum only applies to verion 5.2.0 */
 298         if (fsl_ddr_get_version(ctrl_num) == 0x50200) {
 299                 /* Wait for idle */
 300                 timeout = 40;
 301                 while (!(ddr_in32(&ddr->debug[1]) & 0x2) &&
 302                        (timeout > 0)) {
 303                         udelay(1000);
 304                         timeout--;
 305                 }
 306                 if (timeout <= 0) {
 307                         printf("Controler %d timeout, debug_2 = %x\n",
 308                                ctrl_num, ddr_in32(&ddr->debug[1]));
 309                 }
 310
 311                 /* The vref setting sequence is different for range 2 */
 312                 if (regs->ddr_cdr2 & DDR_CDR2_VREF_RANGE_2)
 313                         vref_seq = vref_seq2;
 314
 315                 /* Set VREF */
 316                 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
 317                         if (!(regs->cs[i].config & SDRAM_CS_CONFIG_EN))
 318                                 continue;
 319
 320                         mr6 = (regs->ddr_sdram_mode_10 >> 16)           |
 321                                  MD_CNTL_MD_EN                          |
 322                                  MD_CNTL_CS_SEL(i)                      |
 323                                  MD_CNTL_MD_SEL(6)                      |
 324                                  0x00200000;
 325                         temp32 = mr6 | vref_seq[0];
 326                         set_wait_for_bits_clear(&ddr->sdram_md_cntl,
 327                                                 temp32, MD_CNTL_MD_EN);
 328                         udelay(1);
 329                         debug("MR6 = 0x%08x\n", temp32);
 330                         temp32 = mr6 | vref_seq[1];
 331                         set_wait_for_bits_clear(&ddr->sdram_md_cntl,
 332                                                 temp32, MD_CNTL_MD_EN);
 333                         udelay(1);
 334                         debug("MR6 = 0x%08x\n", temp32);
 335                         temp32 = mr6 | vref_seq[2];
 336                         set_wait_for_bits_clear(&ddr->sdram_md_cntl,
 337                                                 temp32, MD_CNTL_MD_EN);
 338                         udelay(1);
 339                         debug("MR6 = 0x%08x\n", temp32);
 340                 }
 341                 ddr_out32(&ddr->sdram_md_cntl, 0);
 342                 ddr_out32(&ddr->debug[28], 0);          /* Enable deskew */
 343                 ddr_out32(&ddr->debug[1], 0x400);       /* restart deskew */
 344                 /* wait for idle */
 345                 timeout = 40;
 346                 while (!(ddr_in32(&ddr->debug[1]) & 0x2) &&
 347                        (timeout > 0)) {
 348                         udelay(1000);
 349                         timeout--;
 350                 }
 351                 if (timeout <= 0) {
 352                         printf("Controler %d timeout, debug_2 = %x\n",
 353                                ctrl_num, ddr_in32(&ddr->debug[1]));
 354                 }
 355                 /* Restore D_INIT */
 356                 ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2);
 357         }
 358 #endif /* CONFIG_SYS_FSL_ERRATUM_A008511 */
 359
 360         total_gb_size_per_controller = 0;
 361         for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
 362                 if (!(regs->cs[i].config & 0x80000000))
 363                         continue;
 364                 total_gb_size_per_controller += 1 << (
 365                         ((regs->cs[i].config >> 14) & 0x3) + 2 +
 366                         ((regs->cs[i].config >> 8) & 0x7) + 12 +
 367                         ((regs->cs[i].config >> 4) & 0x3) + 0 +
 368                         ((regs->cs[i].config >> 0) & 0x7) + 8 +
 369                         3 - ((regs->ddr_sdram_cfg >> 19) & 0x3) -
 370                         26);                    /* minus 26 (count of 64M) */
 371         }
 372         if (fsl_ddr_get_intl3r() & 0x80000000)  /* 3-way interleaving */
 373                 total_gb_size_per_controller *= 3;
 374         else if (regs->cs[0].config & 0x20000000) /* 2-way interleaving */
 375                 total_gb_size_per_controller <<= 1;
 376         /*
 377          * total memory / bus width = transactions needed
 378          * transactions needed / data rate = seconds
 379          * to add plenty of buffer, double the time
 380          * For example, 2GB on 666MT/s 64-bit bus takes about 402ms
 381          * Let's wait for 800ms
 382          */
 383         bus_width = 3 - ((ddr_in32(&ddr->sdram_cfg) & SDRAM_CFG_DBW_MASK)
 384                         >> SDRAM_CFG_DBW_SHIFT);
 385         timeout = ((total_gb_size_per_controller << (6 - bus_width)) * 100 /
 386                 (get_ddr_freq(ctrl_num) >> 20)) << 2;
 387         total_gb_size_per_controller >>= 4;     /* shift down to gb size */
 388         debug("total %d GB\n", total_gb_size_per_controller);
 389         debug("Need to wait up to %d * 10ms\n", timeout);
 390
 391         /* Poll DDR_SDRAM_CFG_2[D_INIT] bit until auto-data init is done.  */
 392         while ((ddr_in32(&ddr->sdram_cfg_2) & SDRAM_CFG2_D_INIT) &&
 393                 (timeout >= 0)) {
 394                 udelay(10000);          /* throttle polling rate */
 395                 timeout--;
 396         }
 397
 398         if (timeout <= 0)
 399                 printf("Waiting for D_INIT timeout. Memory may not work.\n");
 400 #ifdef CONFIG_DEEP_SLEEP
 401         if (is_warm_boot()) {
 402                 /* exit self-refresh */
 403                 temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg_2);
 404                 temp_sdram_cfg &= ~SDRAM_CFG2_FRC_SR;
 405                 ddr_out32(&ddr->sdram_cfg_2, temp_sdram_cfg);
 406         }
 407 #endif
 408
 409 #ifdef CONFIG_FSL_DDR_BIST
 410 #define BIST_PATTERN1   0xFFFFFFFF
 411 #define BIST_PATTERN2   0x0
 412 #define BIST_CR         0x80010000
 413 #define BIST_CR_EN      0x80000000
 414 #define BIST_CR_STAT    0x00000001
 415 #define CTLR_INTLV_MASK 0x20000000
 416         /* Perform build-in test on memory. Three-way interleaving is not yet
 417          * supported by this code. */
 418         if (getenv_f("ddr_bist", buffer, CONFIG_SYS_CBSIZE) >= 0) {
 419                 puts("Running BIST test. This will take a while...");
 420                 cs0_config = ddr_in32(&ddr->cs0_config);
 421                 cs0_bnds = ddr_in32(&ddr->cs0_bnds);
 422                 cs1_bnds = ddr_in32(&ddr->cs1_bnds);
 423                 cs2_bnds = ddr_in32(&ddr->cs2_bnds);
 424                 cs3_bnds = ddr_in32(&ddr->cs3_bnds);
 425                 if (cs0_config & CTLR_INTLV_MASK) {
 426                         /* set bnds to non-interleaving */
 427                         ddr_out32(&ddr->cs0_bnds, (cs0_bnds & 0xfffefffe) >> 1);
 428                         ddr_out32(&ddr->cs1_bnds, (cs1_bnds & 0xfffefffe) >> 1);
 429                         ddr_out32(&ddr->cs2_bnds, (cs2_bnds & 0xfffefffe) >> 1);
 430                         ddr_out32(&ddr->cs3_bnds, (cs3_bnds & 0xfffefffe) >> 1);
 431                 }
 432                 ddr_out32(&ddr->mtp1, BIST_PATTERN1);
 433                 ddr_out32(&ddr->mtp2, BIST_PATTERN1);
 434                 ddr_out32(&ddr->mtp3, BIST_PATTERN2);
 435                 ddr_out32(&ddr->mtp4, BIST_PATTERN2);
 436                 ddr_out32(&ddr->mtp5, BIST_PATTERN1);
 437                 ddr_out32(&ddr->mtp6, BIST_PATTERN1);
 438                 ddr_out32(&ddr->mtp7, BIST_PATTERN2);
 439                 ddr_out32(&ddr->mtp8, BIST_PATTERN2);
 440                 ddr_out32(&ddr->mtp9, BIST_PATTERN1);
 441                 ddr_out32(&ddr->mtp10, BIST_PATTERN2);
 442                 mtcr = BIST_CR;
 443                 ddr_out32(&ddr->mtcr, mtcr);
 444                 timeout = 100;
 445                 while (timeout > 0 && (mtcr & BIST_CR_EN)) {
 446                         mdelay(1000);
 447                         timeout--;
 448                         mtcr = ddr_in32(&ddr->mtcr);
 449                 }
 450                 if (timeout <= 0)
 451                         puts("Timeout\n");
 452                 else
 453                         puts("Done\n");
 454                 err_detect = ddr_in32(&ddr->err_detect);
 455                 err_sbe = ddr_in32(&ddr->err_sbe);
 456                 if (mtcr & BIST_CR_STAT) {
 457                         printf("BIST test failed on controller %d.\n",
 458                                ctrl_num);
 459                 }
 460                 if (err_detect || (err_sbe & 0xffff)) {
 461                         printf("ECC error detected on controller %d.\n",
 462                                ctrl_num);
 463                 }
 464
 465                 if (cs0_config & CTLR_INTLV_MASK) {
 466                         /* restore bnds registers */
 467                         ddr_out32(&ddr->cs0_bnds, cs0_bnds);
 468                         ddr_out32(&ddr->cs1_bnds, cs1_bnds);
 469                         ddr_out32(&ddr->cs2_bnds, cs2_bnds);
 470                         ddr_out32(&ddr->cs3_bnds, cs3_bnds);
 471                 }
 472         }
 473 #endif
 474 }