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 #if defined(CONFIG_SYS_FSL_ERRATUM_A008511) | \ 16 defined(CONFIG_SYS_FSL_ERRATUM_A009803) 17 static void set_wait_for_bits_clear(void *ptr, u32 value, u32 bits) 18 { 19 int timeout = 1000; 20 21 ddr_out32(ptr, value); 22 23 while (ddr_in32(ptr) & bits) { 24 udelay(100); 25 timeout--; 26 } 27 if (timeout <= 0) 28 puts("Error: wait for clear timeout.\n"); 29 } 30 #endif 31 32 #if (CONFIG_CHIP_SELECTS_PER_CTRL > 4) 33 #error Invalid setting for CONFIG_CHIP_SELECTS_PER_CTRL 34 #endif 35 36 /* 37 * regs has the to-be-set values for DDR controller registers 38 * ctrl_num is the DDR controller number 39 * step: 0 goes through the initialization in one pass 40 * 1 sets registers and returns before enabling controller 41 * 2 resumes from step 1 and continues to initialize 42 * Dividing the initialization to two steps to deassert DDR reset signal 43 * to comply with JEDEC specs for RDIMMs. 44 */ 45 void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs, 46 unsigned int ctrl_num, int step) 47 { 48 unsigned int i, bus_width; 49 struct ccsr_ddr __iomem *ddr; 50 u32 temp_sdram_cfg; 51 u32 total_gb_size_per_controller; 52 int timeout; 53 #ifdef CONFIG_SYS_FSL_ERRATUM_A008511 54 u32 temp32, mr6; 55 u32 vref_seq1[3] = {0x80, 0x96, 0x16}; /* for range 1 */ 56 u32 vref_seq2[3] = {0xc0, 0xf0, 0x70}; /* for range 2 */ 57 u32 *vref_seq = vref_seq1; 58 #endif 59 #if defined(CONFIG_SYS_FSL_ERRATUM_A009942) | \ 60 defined(CONFIG_SYS_FSL_ERRATUM_A010165) 61 ulong ddr_freq; 62 u32 tmp; 63 #endif 64 #ifdef CONFIG_FSL_DDR_BIST 65 u32 mtcr, err_detect, err_sbe; 66 u32 cs0_bnds, cs1_bnds, cs2_bnds, cs3_bnds, cs0_config; 67 #endif 68 #ifdef CONFIG_FSL_DDR_BIST 69 char buffer[CONFIG_SYS_CBSIZE]; 70 #endif 71 72 switch (ctrl_num) { 73 case 0: 74 ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR; 75 break; 76 #if defined(CONFIG_SYS_FSL_DDR2_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 1) 77 case 1: 78 ddr = (void *)CONFIG_SYS_FSL_DDR2_ADDR; 79 break; 80 #endif 81 #if defined(CONFIG_SYS_FSL_DDR3_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 2) 82 case 2: 83 ddr = (void *)CONFIG_SYS_FSL_DDR3_ADDR; 84 break; 85 #endif 86 #if defined(CONFIG_SYS_FSL_DDR4_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 3) 87 case 3: 88 ddr = (void *)CONFIG_SYS_FSL_DDR4_ADDR; 89 break; 90 #endif 91 default: 92 printf("%s unexpected ctrl_num = %u\n", __func__, ctrl_num); 93 return; 94 } 95 96 if (step == 2) 97 goto step2; 98 99 if (regs->ddr_eor) 100 ddr_out32(&ddr->eor, regs->ddr_eor); 101 102 ddr_out32(&ddr->sdram_clk_cntl, regs->ddr_sdram_clk_cntl); 103 104 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 105 if (i == 0) { 106 ddr_out32(&ddr->cs0_bnds, regs->cs[i].bnds); 107 ddr_out32(&ddr->cs0_config, regs->cs[i].config); 108 ddr_out32(&ddr->cs0_config_2, regs->cs[i].config_2); 109 110 } else if (i == 1) { 111 ddr_out32(&ddr->cs1_bnds, regs->cs[i].bnds); 112 ddr_out32(&ddr->cs1_config, regs->cs[i].config); 113 ddr_out32(&ddr->cs1_config_2, regs->cs[i].config_2); 114 115 } else if (i == 2) { 116 ddr_out32(&ddr->cs2_bnds, regs->cs[i].bnds); 117 ddr_out32(&ddr->cs2_config, regs->cs[i].config); 118 ddr_out32(&ddr->cs2_config_2, regs->cs[i].config_2); 119 120 } else if (i == 3) { 121 ddr_out32(&ddr->cs3_bnds, regs->cs[i].bnds); 122 ddr_out32(&ddr->cs3_config, regs->cs[i].config); 123 ddr_out32(&ddr->cs3_config_2, regs->cs[i].config_2); 124 } 125 } 126 127 ddr_out32(&ddr->timing_cfg_3, regs->timing_cfg_3); 128 ddr_out32(&ddr->timing_cfg_0, regs->timing_cfg_0); 129 ddr_out32(&ddr->timing_cfg_1, regs->timing_cfg_1); 130 ddr_out32(&ddr->timing_cfg_2, regs->timing_cfg_2); 131 ddr_out32(&ddr->timing_cfg_4, regs->timing_cfg_4); 132 ddr_out32(&ddr->timing_cfg_5, regs->timing_cfg_5); 133 ddr_out32(&ddr->timing_cfg_6, regs->timing_cfg_6); 134 ddr_out32(&ddr->timing_cfg_7, regs->timing_cfg_7); 135 ddr_out32(&ddr->timing_cfg_8, regs->timing_cfg_8); 136 ddr_out32(&ddr->timing_cfg_9, regs->timing_cfg_9); 137 ddr_out32(&ddr->ddr_zq_cntl, regs->ddr_zq_cntl); 138 ddr_out32(&ddr->dq_map_0, regs->dq_map_0); 139 ddr_out32(&ddr->dq_map_1, regs->dq_map_1); 140 ddr_out32(&ddr->dq_map_2, regs->dq_map_2); 141 ddr_out32(&ddr->dq_map_3, regs->dq_map_3); 142 ddr_out32(&ddr->sdram_cfg_3, regs->ddr_sdram_cfg_3); 143 ddr_out32(&ddr->sdram_mode, regs->ddr_sdram_mode); 144 ddr_out32(&ddr->sdram_mode_2, regs->ddr_sdram_mode_2); 145 ddr_out32(&ddr->sdram_mode_3, regs->ddr_sdram_mode_3); 146 ddr_out32(&ddr->sdram_mode_4, regs->ddr_sdram_mode_4); 147 ddr_out32(&ddr->sdram_mode_5, regs->ddr_sdram_mode_5); 148 ddr_out32(&ddr->sdram_mode_6, regs->ddr_sdram_mode_6); 149 ddr_out32(&ddr->sdram_mode_7, regs->ddr_sdram_mode_7); 150 ddr_out32(&ddr->sdram_mode_8, regs->ddr_sdram_mode_8); 151 ddr_out32(&ddr->sdram_mode_9, regs->ddr_sdram_mode_9); 152 ddr_out32(&ddr->sdram_mode_10, regs->ddr_sdram_mode_10); 153 ddr_out32(&ddr->sdram_mode_11, regs->ddr_sdram_mode_11); 154 ddr_out32(&ddr->sdram_mode_12, regs->ddr_sdram_mode_12); 155 ddr_out32(&ddr->sdram_mode_13, regs->ddr_sdram_mode_13); 156 ddr_out32(&ddr->sdram_mode_14, regs->ddr_sdram_mode_14); 157 ddr_out32(&ddr->sdram_mode_15, regs->ddr_sdram_mode_15); 158 ddr_out32(&ddr->sdram_mode_16, regs->ddr_sdram_mode_16); 159 ddr_out32(&ddr->sdram_md_cntl, regs->ddr_sdram_md_cntl); 160 #ifdef CONFIG_SYS_FSL_ERRATUM_A009663 161 ddr_out32(&ddr->sdram_interval, 162 regs->ddr_sdram_interval & ~SDRAM_INTERVAL_BSTOPRE); 163 #else 164 ddr_out32(&ddr->sdram_interval, regs->ddr_sdram_interval); 165 #endif 166 ddr_out32(&ddr->sdram_data_init, regs->ddr_data_init); 167 ddr_out32(&ddr->ddr_wrlvl_cntl, regs->ddr_wrlvl_cntl); 168 #ifndef CONFIG_SYS_FSL_DDR_EMU 169 /* 170 * Skip these two registers if running on emulator 171 * because emulator doesn't have skew between bytes. 172 */ 173 174 if (regs->ddr_wrlvl_cntl_2) 175 ddr_out32(&ddr->ddr_wrlvl_cntl_2, regs->ddr_wrlvl_cntl_2); 176 if (regs->ddr_wrlvl_cntl_3) 177 ddr_out32(&ddr->ddr_wrlvl_cntl_3, regs->ddr_wrlvl_cntl_3); 178 #endif 179 180 ddr_out32(&ddr->ddr_sr_cntr, regs->ddr_sr_cntr); 181 ddr_out32(&ddr->ddr_sdram_rcw_1, regs->ddr_sdram_rcw_1); 182 ddr_out32(&ddr->ddr_sdram_rcw_2, regs->ddr_sdram_rcw_2); 183 ddr_out32(&ddr->ddr_sdram_rcw_3, regs->ddr_sdram_rcw_3); 184 ddr_out32(&ddr->ddr_sdram_rcw_4, regs->ddr_sdram_rcw_4); 185 ddr_out32(&ddr->ddr_sdram_rcw_5, regs->ddr_sdram_rcw_5); 186 ddr_out32(&ddr->ddr_sdram_rcw_6, regs->ddr_sdram_rcw_6); 187 ddr_out32(&ddr->ddr_cdr1, regs->ddr_cdr1); 188 #ifdef CONFIG_DEEP_SLEEP 189 if (is_warm_boot()) { 190 ddr_out32(&ddr->sdram_cfg_2, 191 regs->ddr_sdram_cfg_2 & ~SDRAM_CFG2_D_INIT); 192 ddr_out32(&ddr->init_addr, CONFIG_SYS_SDRAM_BASE); 193 ddr_out32(&ddr->init_ext_addr, DDR_INIT_ADDR_EXT_UIA); 194 195 /* DRAM VRef will not be trained */ 196 ddr_out32(&ddr->ddr_cdr2, 197 regs->ddr_cdr2 & ~DDR_CDR2_VREF_TRAIN_EN); 198 } else 199 #endif 200 { 201 ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2); 202 ddr_out32(&ddr->init_addr, regs->ddr_init_addr); 203 ddr_out32(&ddr->init_ext_addr, regs->ddr_init_ext_addr); 204 ddr_out32(&ddr->ddr_cdr2, regs->ddr_cdr2); 205 } 206 207 #ifdef CONFIG_SYS_FSL_ERRATUM_A009803 208 /* part 1 of 2 */ 209 if (regs->ddr_sdram_cfg_2 & SDRAM_CFG2_AP_EN) { 210 if (regs->ddr_sdram_cfg & SDRAM_CFG_RD_EN) { /* for RDIMM */ 211 ddr_out32(&ddr->ddr_sdram_rcw_2, 212 regs->ddr_sdram_rcw_2 & ~0x0f000000); 213 } 214 ddr_out32(&ddr->err_disable, regs->err_disable | 215 DDR_ERR_DISABLE_APED); 216 } 217 #else 218 ddr_out32(&ddr->err_disable, regs->err_disable); 219 #endif 220 ddr_out32(&ddr->err_int_en, regs->err_int_en); 221 for (i = 0; i < 64; i++) { 222 if (regs->debug[i]) { 223 debug("Write to debug_%d as %08x\n", 224 i+1, regs->debug[i]); 225 ddr_out32(&ddr->debug[i], regs->debug[i]); 226 } 227 } 228 #ifdef CONFIG_SYS_FSL_ERRATUM_A008378 229 /* Erratum applies when accumulated ECC is used, or DBI is enabled */ 230 #define IS_ACC_ECC_EN(v) ((v) & 0x4) 231 #define IS_DBI(v) ((((v) >> 12) & 0x3) == 0x2) 232 if (has_erratum_a008378()) { 233 if (IS_ACC_ECC_EN(regs->ddr_sdram_cfg) || 234 IS_DBI(regs->ddr_sdram_cfg_3)) 235 ddr_setbits32(&ddr->debug[28], 0x9 << 20); 236 } 237 #endif 238 239 #ifdef CONFIG_SYS_FSL_ERRATUM_A008511 240 /* Part 1 of 2 */ 241 if (fsl_ddr_get_version(ctrl_num) == 0x50200) { 242 /* Disable DRAM VRef training */ 243 ddr_out32(&ddr->ddr_cdr2, 244 regs->ddr_cdr2 & ~DDR_CDR2_VREF_TRAIN_EN); 245 /* disable transmit bit deskew */ 246 temp32 = ddr_in32(&ddr->debug[28]); 247 temp32 |= DDR_TX_BD_DIS; 248 ddr_out32(&ddr->debug[28], temp32); 249 ddr_out32(&ddr->debug[25], 0x9000); 250 } else if (fsl_ddr_get_version(ctrl_num) == 0x50201) { 251 /* Output enable forced off */ 252 ddr_out32(&ddr->debug[37], 1 << 31); 253 /* Enable Vref training */ 254 ddr_out32(&ddr->ddr_cdr2, 255 regs->ddr_cdr2 | DDR_CDR2_VREF_TRAIN_EN); 256 } else { 257 debug("Erratum A008511 doesn't apply.\n"); 258 } 259 #endif 260 261 #if defined(CONFIG_SYS_FSL_ERRATUM_A009803) || \ 262 defined(CONFIG_SYS_FSL_ERRATUM_A008511) 263 /* Disable D_INIT */ 264 ddr_out32(&ddr->sdram_cfg_2, 265 regs->ddr_sdram_cfg_2 & ~SDRAM_CFG2_D_INIT); 266 #endif 267 268 #ifdef CONFIG_SYS_FSL_ERRATUM_A009801 269 temp32 = ddr_in32(&ddr->debug[25]); 270 temp32 &= ~DDR_CAS_TO_PRE_SUB_MASK; 271 temp32 |= 9 << DDR_CAS_TO_PRE_SUB_SHIFT; 272 ddr_out32(&ddr->debug[25], temp32); 273 #endif 274 275 #ifdef CONFIG_SYS_FSL_ERRATUM_A009942 276 ddr_freq = get_ddr_freq(ctrl_num) / 1000000; 277 tmp = ddr_in32(&ddr->debug[28]); 278 if (ddr_freq <= 1333) 279 ddr_out32(&ddr->debug[28], tmp | 0x0080006a); 280 else if (ddr_freq <= 1600) 281 ddr_out32(&ddr->debug[28], tmp | 0x0070006f); 282 else if (ddr_freq <= 1867) 283 ddr_out32(&ddr->debug[28], tmp | 0x00700076); 284 else if (ddr_freq <= 2133) 285 ddr_out32(&ddr->debug[28], tmp | 0x0060007b); 286 #endif 287 288 #ifdef CONFIG_SYS_FSL_ERRATUM_A010165 289 ddr_freq = get_ddr_freq(ctrl_num) / 1000000; 290 if ((ddr_freq > 1900) && (ddr_freq < 2300)) { 291 tmp = ddr_in32(&ddr->debug[28]); 292 ddr_out32(&ddr->debug[28], tmp | 0x000a0000); 293 } 294 #endif 295 /* 296 * For RDIMMs, JEDEC spec requires clocks to be stable before reset is 297 * deasserted. Clocks start when any chip select is enabled and clock 298 * control register is set. Because all DDR components are connected to 299 * one reset signal, this needs to be done in two steps. Step 1 is to 300 * get the clocks started. Step 2 resumes after reset signal is 301 * deasserted. 302 */ 303 if (step == 1) { 304 udelay(200); 305 return; 306 } 307 308 step2: 309 /* Set, but do not enable the memory */ 310 temp_sdram_cfg = regs->ddr_sdram_cfg; 311 temp_sdram_cfg &= ~(SDRAM_CFG_MEM_EN); 312 ddr_out32(&ddr->sdram_cfg, temp_sdram_cfg); 313 314 /* 315 * 500 painful micro-seconds must elapse between 316 * the DDR clock setup and the DDR config enable. 317 * DDR2 need 200 us, and DDR3 need 500 us from spec, 318 * we choose the max, that is 500 us for all of case. 319 */ 320 udelay(500); 321 mb(); 322 isb(); 323 324 #ifdef CONFIG_DEEP_SLEEP 325 if (is_warm_boot()) { 326 /* enter self-refresh */ 327 temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg_2); 328 temp_sdram_cfg |= SDRAM_CFG2_FRC_SR; 329 ddr_out32(&ddr->sdram_cfg_2, temp_sdram_cfg); 330 /* do board specific memory setup */ 331 board_mem_sleep_setup(); 332 333 temp_sdram_cfg = (ddr_in32(&ddr->sdram_cfg) | SDRAM_CFG_BI); 334 } else 335 #endif 336 temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg) & ~SDRAM_CFG_BI; 337 /* Let the controller go */ 338 ddr_out32(&ddr->sdram_cfg, temp_sdram_cfg | SDRAM_CFG_MEM_EN); 339 mb(); 340 isb(); 341 342 #if defined(CONFIG_SYS_FSL_ERRATUM_A008511) || \ 343 defined(CONFIG_SYS_FSL_ERRATUM_A009803) 344 /* Part 2 of 2 */ 345 timeout = 40; 346 /* Wait for idle. D_INIT needs to be cleared earlier, or timeout */ 347 while (!(ddr_in32(&ddr->debug[1]) & 0x2) && 348 (timeout > 0)) { 349 udelay(1000); 350 timeout--; 351 } 352 if (timeout <= 0) { 353 printf("Controler %d timeout, debug_2 = %x\n", 354 ctrl_num, ddr_in32(&ddr->debug[1])); 355 } 356 357 #ifdef CONFIG_SYS_FSL_ERRATUM_A008511 358 /* This erraum only applies to verion 5.2.0 */ 359 if (fsl_ddr_get_version(ctrl_num) == 0x50200) { 360 /* The vref setting sequence is different for range 2 */ 361 if (regs->ddr_cdr2 & DDR_CDR2_VREF_RANGE_2) 362 vref_seq = vref_seq2; 363 364 /* Set VREF */ 365 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 366 if (!(regs->cs[i].config & SDRAM_CS_CONFIG_EN)) 367 continue; 368 369 mr6 = (regs->ddr_sdram_mode_10 >> 16) | 370 MD_CNTL_MD_EN | 371 MD_CNTL_CS_SEL(i) | 372 MD_CNTL_MD_SEL(6) | 373 0x00200000; 374 temp32 = mr6 | vref_seq[0]; 375 set_wait_for_bits_clear(&ddr->sdram_md_cntl, 376 temp32, MD_CNTL_MD_EN); 377 udelay(1); 378 debug("MR6 = 0x%08x\n", temp32); 379 temp32 = mr6 | vref_seq[1]; 380 set_wait_for_bits_clear(&ddr->sdram_md_cntl, 381 temp32, MD_CNTL_MD_EN); 382 udelay(1); 383 debug("MR6 = 0x%08x\n", temp32); 384 temp32 = mr6 | vref_seq[2]; 385 set_wait_for_bits_clear(&ddr->sdram_md_cntl, 386 temp32, MD_CNTL_MD_EN); 387 udelay(1); 388 debug("MR6 = 0x%08x\n", temp32); 389 } 390 ddr_out32(&ddr->sdram_md_cntl, 0); 391 temp32 = ddr_in32(&ddr->debug[28]); 392 temp32 &= ~DDR_TX_BD_DIS; /* Enable deskew */ 393 ddr_out32(&ddr->debug[28], temp32); 394 ddr_out32(&ddr->debug[1], 0x400); /* restart deskew */ 395 /* wait for idle */ 396 timeout = 40; 397 while (!(ddr_in32(&ddr->debug[1]) & 0x2) && 398 (timeout > 0)) { 399 udelay(1000); 400 timeout--; 401 } 402 if (timeout <= 0) { 403 printf("Controler %d timeout, debug_2 = %x\n", 404 ctrl_num, ddr_in32(&ddr->debug[1])); 405 } 406 } 407 #endif /* CONFIG_SYS_FSL_ERRATUM_A008511 */ 408 409 #ifdef CONFIG_SYS_FSL_ERRATUM_A009803 410 if (regs->ddr_sdram_cfg_2 & SDRAM_CFG2_AP_EN) { 411 /* if it's RDIMM */ 412 if (regs->ddr_sdram_cfg & SDRAM_CFG_RD_EN) { 413 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 414 if (!(regs->cs[i].config & SDRAM_CS_CONFIG_EN)) 415 continue; 416 set_wait_for_bits_clear(&ddr->sdram_md_cntl, 417 MD_CNTL_MD_EN | 418 MD_CNTL_CS_SEL(i) | 419 0x070000ed, 420 MD_CNTL_MD_EN); 421 udelay(1); 422 } 423 } 424 425 ddr_out32(&ddr->err_disable, 426 regs->err_disable & ~DDR_ERR_DISABLE_APED); 427 } 428 #endif 429 /* Restore D_INIT */ 430 ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2); 431 #endif 432 433 total_gb_size_per_controller = 0; 434 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { 435 if (!(regs->cs[i].config & 0x80000000)) 436 continue; 437 total_gb_size_per_controller += 1 << ( 438 ((regs->cs[i].config >> 14) & 0x3) + 2 + 439 ((regs->cs[i].config >> 8) & 0x7) + 12 + 440 ((regs->cs[i].config >> 4) & 0x3) + 0 + 441 ((regs->cs[i].config >> 0) & 0x7) + 8 + 442 3 - ((regs->ddr_sdram_cfg >> 19) & 0x3) - 443 26); /* minus 26 (count of 64M) */ 444 } 445 if (fsl_ddr_get_intl3r() & 0x80000000) /* 3-way interleaving */ 446 total_gb_size_per_controller *= 3; 447 else if (regs->cs[0].config & 0x20000000) /* 2-way interleaving */ 448 total_gb_size_per_controller <<= 1; 449 /* 450 * total memory / bus width = transactions needed 451 * transactions needed / data rate = seconds 452 * to add plenty of buffer, double the time 453 * For example, 2GB on 666MT/s 64-bit bus takes about 402ms 454 * Let's wait for 800ms 455 */ 456 bus_width = 3 - ((ddr_in32(&ddr->sdram_cfg) & SDRAM_CFG_DBW_MASK) 457 >> SDRAM_CFG_DBW_SHIFT); 458 timeout = ((total_gb_size_per_controller << (6 - bus_width)) * 100 / 459 (get_ddr_freq(ctrl_num) >> 20)) << 2; 460 total_gb_size_per_controller >>= 4; /* shift down to gb size */ 461 debug("total %d GB\n", total_gb_size_per_controller); 462 debug("Need to wait up to %d * 10ms\n", timeout); 463 464 /* Poll DDR_SDRAM_CFG_2[D_INIT] bit until auto-data init is done. */ 465 while ((ddr_in32(&ddr->sdram_cfg_2) & SDRAM_CFG2_D_INIT) && 466 (timeout >= 0)) { 467 udelay(10000); /* throttle polling rate */ 468 timeout--; 469 } 470 471 if (timeout <= 0) 472 printf("Waiting for D_INIT timeout. Memory may not work.\n"); 473 474 #ifdef CONFIG_SYS_FSL_ERRATUM_A009663 475 ddr_out32(&ddr->sdram_interval, regs->ddr_sdram_interval); 476 #endif 477 478 #ifdef CONFIG_DEEP_SLEEP 479 if (is_warm_boot()) { 480 /* exit self-refresh */ 481 temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg_2); 482 temp_sdram_cfg &= ~SDRAM_CFG2_FRC_SR; 483 ddr_out32(&ddr->sdram_cfg_2, temp_sdram_cfg); 484 } 485 #endif 486 487 #ifdef CONFIG_FSL_DDR_BIST 488 #define BIST_PATTERN1 0xFFFFFFFF 489 #define BIST_PATTERN2 0x0 490 #define BIST_CR 0x80010000 491 #define BIST_CR_EN 0x80000000 492 #define BIST_CR_STAT 0x00000001 493 #define CTLR_INTLV_MASK 0x20000000 494 /* Perform build-in test on memory. Three-way interleaving is not yet 495 * supported by this code. */ 496 if (getenv_f("ddr_bist", buffer, CONFIG_SYS_CBSIZE) >= 0) { 497 puts("Running BIST test. This will take a while..."); 498 cs0_config = ddr_in32(&ddr->cs0_config); 499 cs0_bnds = ddr_in32(&ddr->cs0_bnds); 500 cs1_bnds = ddr_in32(&ddr->cs1_bnds); 501 cs2_bnds = ddr_in32(&ddr->cs2_bnds); 502 cs3_bnds = ddr_in32(&ddr->cs3_bnds); 503 if (cs0_config & CTLR_INTLV_MASK) { 504 /* set bnds to non-interleaving */ 505 ddr_out32(&ddr->cs0_bnds, (cs0_bnds & 0xfffefffe) >> 1); 506 ddr_out32(&ddr->cs1_bnds, (cs1_bnds & 0xfffefffe) >> 1); 507 ddr_out32(&ddr->cs2_bnds, (cs2_bnds & 0xfffefffe) >> 1); 508 ddr_out32(&ddr->cs3_bnds, (cs3_bnds & 0xfffefffe) >> 1); 509 } 510 ddr_out32(&ddr->mtp1, BIST_PATTERN1); 511 ddr_out32(&ddr->mtp2, BIST_PATTERN1); 512 ddr_out32(&ddr->mtp3, BIST_PATTERN2); 513 ddr_out32(&ddr->mtp4, BIST_PATTERN2); 514 ddr_out32(&ddr->mtp5, BIST_PATTERN1); 515 ddr_out32(&ddr->mtp6, BIST_PATTERN1); 516 ddr_out32(&ddr->mtp7, BIST_PATTERN2); 517 ddr_out32(&ddr->mtp8, BIST_PATTERN2); 518 ddr_out32(&ddr->mtp9, BIST_PATTERN1); 519 ddr_out32(&ddr->mtp10, BIST_PATTERN2); 520 mtcr = BIST_CR; 521 ddr_out32(&ddr->mtcr, mtcr); 522 timeout = 100; 523 while (timeout > 0 && (mtcr & BIST_CR_EN)) { 524 mdelay(1000); 525 timeout--; 526 mtcr = ddr_in32(&ddr->mtcr); 527 } 528 if (timeout <= 0) 529 puts("Timeout\n"); 530 else 531 puts("Done\n"); 532 err_detect = ddr_in32(&ddr->err_detect); 533 err_sbe = ddr_in32(&ddr->err_sbe); 534 if (mtcr & BIST_CR_STAT) { 535 printf("BIST test failed on controller %d.\n", 536 ctrl_num); 537 } 538 if (err_detect || (err_sbe & 0xffff)) { 539 printf("ECC error detected on controller %d.\n", 540 ctrl_num); 541 } 542 543 if (cs0_config & CTLR_INTLV_MASK) { 544 /* restore bnds registers */ 545 ddr_out32(&ddr->cs0_bnds, cs0_bnds); 546 ddr_out32(&ddr->cs1_bnds, cs1_bnds); 547 ddr_out32(&ddr->cs2_bnds, cs2_bnds); 548 ddr_out32(&ddr->cs3_bnds, cs3_bnds); 549 } 550 } 551 #endif 552 } 553