1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright 2008-2014 Freescale Semiconductor, Inc. 4 */ 5 6 #include <common.h> 7 #ifdef CONFIG_PPC 8 #include <asm/fsl_law.h> 9 #endif 10 #include <div64.h> 11 12 #include <fsl_ddr.h> 13 #include <fsl_immap.h> 14 #include <asm/io.h> 15 #if defined(CONFIG_FSL_LSCH2) || defined(CONFIG_FSL_LSCH3) || \ 16 defined(CONFIG_ARM) 17 #include <asm/arch/clock.h> 18 #endif 19 20 /* To avoid 64-bit full-divides, we factor this here */ 21 #define ULL_2E12 2000000000000ULL 22 #define UL_5POW12 244140625UL 23 #define UL_2POW13 (1UL << 13) 24 25 #define ULL_8FS 0xFFFFFFFFULL 26 27 u32 fsl_ddr_get_version(unsigned int ctrl_num) 28 { 29 struct ccsr_ddr __iomem *ddr; 30 u32 ver_major_minor_errata; 31 32 switch (ctrl_num) { 33 case 0: 34 ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR; 35 break; 36 #if defined(CONFIG_SYS_FSL_DDR2_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 1) 37 case 1: 38 ddr = (void *)CONFIG_SYS_FSL_DDR2_ADDR; 39 break; 40 #endif 41 #if defined(CONFIG_SYS_FSL_DDR3_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 2) 42 case 2: 43 ddr = (void *)CONFIG_SYS_FSL_DDR3_ADDR; 44 break; 45 #endif 46 #if defined(CONFIG_SYS_FSL_DDR4_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 3) 47 case 3: 48 ddr = (void *)CONFIG_SYS_FSL_DDR4_ADDR; 49 break; 50 #endif 51 default: 52 printf("%s unexpected ctrl_num = %u\n", __func__, ctrl_num); 53 return 0; 54 } 55 ver_major_minor_errata = (ddr_in32(&ddr->ip_rev1) & 0xFFFF) << 8; 56 ver_major_minor_errata |= (ddr_in32(&ddr->ip_rev2) & 0xFF00) >> 8; 57 58 return ver_major_minor_errata; 59 } 60 61 /* 62 * Round up mclk_ps to nearest 1 ps in memory controller code 63 * if the error is 0.5ps or more. 64 * 65 * If an imprecise data rate is too high due to rounding error 66 * propagation, compute a suitably rounded mclk_ps to compute 67 * a working memory controller configuration. 68 */ 69 unsigned int get_memory_clk_period_ps(const unsigned int ctrl_num) 70 { 71 unsigned int data_rate = get_ddr_freq(ctrl_num); 72 unsigned int result; 73 74 /* Round to nearest 10ps, being careful about 64-bit multiply/divide */ 75 unsigned long long rem, mclk_ps = ULL_2E12; 76 77 /* Now perform the big divide, the result fits in 32-bits */ 78 rem = do_div(mclk_ps, data_rate); 79 result = (rem >= (data_rate >> 1)) ? mclk_ps + 1 : mclk_ps; 80 81 return result; 82 } 83 84 /* Convert picoseconds into DRAM clock cycles (rounding up if needed). */ 85 unsigned int picos_to_mclk(const unsigned int ctrl_num, unsigned int picos) 86 { 87 unsigned long long clks, clks_rem; 88 unsigned long data_rate = get_ddr_freq(ctrl_num); 89 90 /* Short circuit for zero picos */ 91 if (!picos) 92 return 0; 93 94 /* First multiply the time by the data rate (32x32 => 64) */ 95 clks = picos * (unsigned long long)data_rate; 96 /* 97 * Now divide by 5^12 and track the 32-bit remainder, then divide 98 * by 2*(2^12) using shifts (and updating the remainder). 99 */ 100 clks_rem = do_div(clks, UL_5POW12); 101 clks_rem += (clks & (UL_2POW13-1)) * UL_5POW12; 102 clks >>= 13; 103 104 /* If we had a remainder greater than the 1ps error, then round up */ 105 if (clks_rem > data_rate) 106 clks++; 107 108 /* Clamp to the maximum representable value */ 109 if (clks > ULL_8FS) 110 clks = ULL_8FS; 111 return (unsigned int) clks; 112 } 113 114 unsigned int mclk_to_picos(const unsigned int ctrl_num, unsigned int mclk) 115 { 116 return get_memory_clk_period_ps(ctrl_num) * mclk; 117 } 118 119 #ifdef CONFIG_PPC 120 void 121 __fsl_ddr_set_lawbar(const common_timing_params_t *memctl_common_params, 122 unsigned int law_memctl, 123 unsigned int ctrl_num) 124 { 125 unsigned long long base = memctl_common_params->base_address; 126 unsigned long long size = memctl_common_params->total_mem; 127 128 /* 129 * If no DIMMs on this controller, do not proceed any further. 130 */ 131 if (!memctl_common_params->ndimms_present) { 132 return; 133 } 134 135 #if !defined(CONFIG_PHYS_64BIT) 136 if (base >= CONFIG_MAX_MEM_MAPPED) 137 return; 138 if ((base + size) >= CONFIG_MAX_MEM_MAPPED) 139 size = CONFIG_MAX_MEM_MAPPED - base; 140 #endif 141 if (set_ddr_laws(base, size, law_memctl) < 0) { 142 printf("%s: ERROR (ctrl #%d, TRGT ID=%x)\n", __func__, ctrl_num, 143 law_memctl); 144 return ; 145 } 146 debug("setup ddr law base = 0x%llx, size 0x%llx, TRGT_ID 0x%x\n", 147 base, size, law_memctl); 148 } 149 150 __attribute__((weak, alias("__fsl_ddr_set_lawbar"))) void 151 fsl_ddr_set_lawbar(const common_timing_params_t *memctl_common_params, 152 unsigned int memctl_interleaved, 153 unsigned int ctrl_num); 154 #endif 155 156 void fsl_ddr_set_intl3r(const unsigned int granule_size) 157 { 158 #ifdef CONFIG_E6500 159 u32 *mcintl3r = (void *) (CONFIG_SYS_IMMR + 0x18004); 160 *mcintl3r = 0x80000000 | (granule_size & 0x1f); 161 debug("Enable MCINTL3R with granule size 0x%x\n", granule_size); 162 #endif 163 } 164 165 u32 fsl_ddr_get_intl3r(void) 166 { 167 u32 val = 0; 168 #ifdef CONFIG_E6500 169 u32 *mcintl3r = (void *) (CONFIG_SYS_IMMR + 0x18004); 170 val = *mcintl3r; 171 #endif 172 return val; 173 } 174 175 void print_ddr_info(unsigned int start_ctrl) 176 { 177 struct ccsr_ddr __iomem *ddr = 178 (struct ccsr_ddr __iomem *)(CONFIG_SYS_FSL_DDR_ADDR); 179 180 #if defined(CONFIG_E6500) && (CONFIG_SYS_NUM_DDR_CTLRS == 3) 181 u32 *mcintl3r = (void *) (CONFIG_SYS_IMMR + 0x18004); 182 #endif 183 #if (CONFIG_SYS_NUM_DDR_CTLRS > 1) 184 uint32_t cs0_config = ddr_in32(&ddr->cs0_config); 185 #endif 186 uint32_t sdram_cfg = ddr_in32(&ddr->sdram_cfg); 187 int cas_lat; 188 189 #if CONFIG_SYS_NUM_DDR_CTLRS >= 2 190 if ((!(sdram_cfg & SDRAM_CFG_MEM_EN)) || 191 (start_ctrl == 1)) { 192 ddr = (void __iomem *)CONFIG_SYS_FSL_DDR2_ADDR; 193 sdram_cfg = ddr_in32(&ddr->sdram_cfg); 194 } 195 #endif 196 #if CONFIG_SYS_NUM_DDR_CTLRS >= 3 197 if ((!(sdram_cfg & SDRAM_CFG_MEM_EN)) || 198 (start_ctrl == 2)) { 199 ddr = (void __iomem *)CONFIG_SYS_FSL_DDR3_ADDR; 200 sdram_cfg = ddr_in32(&ddr->sdram_cfg); 201 } 202 #endif 203 204 if (!(sdram_cfg & SDRAM_CFG_MEM_EN)) { 205 puts(" (DDR not enabled)\n"); 206 return; 207 } 208 209 puts(" (DDR"); 210 switch ((sdram_cfg & SDRAM_CFG_SDRAM_TYPE_MASK) >> 211 SDRAM_CFG_SDRAM_TYPE_SHIFT) { 212 case SDRAM_TYPE_DDR1: 213 puts("1"); 214 break; 215 case SDRAM_TYPE_DDR2: 216 puts("2"); 217 break; 218 case SDRAM_TYPE_DDR3: 219 puts("3"); 220 break; 221 case SDRAM_TYPE_DDR4: 222 puts("4"); 223 break; 224 default: 225 puts("?"); 226 break; 227 } 228 229 if (sdram_cfg & SDRAM_CFG_32_BE) 230 puts(", 32-bit"); 231 else if (sdram_cfg & SDRAM_CFG_16_BE) 232 puts(", 16-bit"); 233 else 234 puts(", 64-bit"); 235 236 /* Calculate CAS latency based on timing cfg values */ 237 cas_lat = ((ddr_in32(&ddr->timing_cfg_1) >> 16) & 0xf); 238 if (fsl_ddr_get_version(0) <= 0x40400) 239 cas_lat += 1; 240 else 241 cas_lat += 2; 242 cas_lat += ((ddr_in32(&ddr->timing_cfg_3) >> 12) & 3) << 4; 243 printf(", CL=%d", cas_lat >> 1); 244 if (cas_lat & 0x1) 245 puts(".5"); 246 247 if (sdram_cfg & SDRAM_CFG_ECC_EN) 248 puts(", ECC on)"); 249 else 250 puts(", ECC off)"); 251 252 #if (CONFIG_SYS_NUM_DDR_CTLRS == 3) 253 #ifdef CONFIG_E6500 254 if (*mcintl3r & 0x80000000) { 255 puts("\n"); 256 puts(" DDR Controller Interleaving Mode: "); 257 switch (*mcintl3r & 0x1f) { 258 case FSL_DDR_3WAY_1KB_INTERLEAVING: 259 puts("3-way 1KB"); 260 break; 261 case FSL_DDR_3WAY_4KB_INTERLEAVING: 262 puts("3-way 4KB"); 263 break; 264 case FSL_DDR_3WAY_8KB_INTERLEAVING: 265 puts("3-way 8KB"); 266 break; 267 default: 268 puts("3-way UNKNOWN"); 269 break; 270 } 271 } 272 #endif 273 #endif 274 #if (CONFIG_SYS_NUM_DDR_CTLRS >= 2) 275 if ((cs0_config & 0x20000000) && (start_ctrl == 0)) { 276 puts("\n"); 277 puts(" DDR Controller Interleaving Mode: "); 278 279 switch ((cs0_config >> 24) & 0xf) { 280 case FSL_DDR_256B_INTERLEAVING: 281 puts("256B"); 282 break; 283 case FSL_DDR_CACHE_LINE_INTERLEAVING: 284 puts("cache line"); 285 break; 286 case FSL_DDR_PAGE_INTERLEAVING: 287 puts("page"); 288 break; 289 case FSL_DDR_BANK_INTERLEAVING: 290 puts("bank"); 291 break; 292 case FSL_DDR_SUPERBANK_INTERLEAVING: 293 puts("super-bank"); 294 break; 295 default: 296 puts("invalid"); 297 break; 298 } 299 } 300 #endif 301 302 if ((sdram_cfg >> 8) & 0x7f) { 303 puts("\n"); 304 puts(" DDR Chip-Select Interleaving Mode: "); 305 switch(sdram_cfg >> 8 & 0x7f) { 306 case FSL_DDR_CS0_CS1_CS2_CS3: 307 puts("CS0+CS1+CS2+CS3"); 308 break; 309 case FSL_DDR_CS0_CS1: 310 puts("CS0+CS1"); 311 break; 312 case FSL_DDR_CS2_CS3: 313 puts("CS2+CS3"); 314 break; 315 case FSL_DDR_CS0_CS1_AND_CS2_CS3: 316 puts("CS0+CS1 and CS2+CS3"); 317 break; 318 default: 319 puts("invalid"); 320 break; 321 } 322 } 323 } 324 325 void __weak detail_board_ddr_info(void) 326 { 327 print_ddr_info(0); 328 } 329 330 void board_add_ram_info(int use_default) 331 { 332 detail_board_ddr_info(); 333 } 334 335 #ifdef CONFIG_FSL_DDR_SYNC_REFRESH 336 #define DDRC_DEBUG20_INIT_DONE 0x80000000 337 #define DDRC_DEBUG2_RF 0x00000040 338 void fsl_ddr_sync_memctl_refresh(unsigned int first_ctrl, 339 unsigned int last_ctrl) 340 { 341 unsigned int i; 342 u32 ddrc_debug20; 343 u32 ddrc_debug2[CONFIG_SYS_NUM_DDR_CTLRS] = {}; 344 u32 *ddrc_debug2_p[CONFIG_SYS_NUM_DDR_CTLRS] = {}; 345 struct ccsr_ddr __iomem *ddr; 346 347 for (i = first_ctrl; i <= last_ctrl; i++) { 348 switch (i) { 349 case 0: 350 ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR; 351 break; 352 #if defined(CONFIG_SYS_FSL_DDR2_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 1) 353 case 1: 354 ddr = (void *)CONFIG_SYS_FSL_DDR2_ADDR; 355 break; 356 #endif 357 #if defined(CONFIG_SYS_FSL_DDR3_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 2) 358 case 2: 359 ddr = (void *)CONFIG_SYS_FSL_DDR3_ADDR; 360 break; 361 #endif 362 #if defined(CONFIG_SYS_FSL_DDR4_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 3) 363 case 3: 364 ddr = (void *)CONFIG_SYS_FSL_DDR4_ADDR; 365 break; 366 #endif 367 default: 368 printf("%s unexpected ctrl = %u\n", __func__, i); 369 return; 370 } 371 ddrc_debug20 = ddr_in32(&ddr->debug[19]); 372 ddrc_debug2_p[i] = &ddr->debug[1]; 373 while (!(ddrc_debug20 & DDRC_DEBUG20_INIT_DONE)) { 374 /* keep polling until DDRC init is done */ 375 udelay(100); 376 ddrc_debug20 = ddr_in32(&ddr->debug[19]); 377 } 378 ddrc_debug2[i] = ddr_in32(&ddr->debug[1]) | DDRC_DEBUG2_RF; 379 } 380 /* 381 * Sync refresh 382 * This is put together to make sure the refresh reqeusts are sent 383 * closely to each other. 384 */ 385 for (i = first_ctrl; i <= last_ctrl; i++) 386 ddr_out32(ddrc_debug2_p[i], ddrc_debug2[i]); 387 } 388 #endif /* CONFIG_FSL_DDR_SYNC_REFRESH */ 389 390 void remove_unused_controllers(fsl_ddr_info_t *info) 391 { 392 #ifdef CONFIG_SYS_FSL_HAS_CCN504 393 int i; 394 u64 nodeid; 395 void *hnf_sam_ctrl = (void *)(CCI_HN_F_0_BASE + CCN_HN_F_SAM_CTL); 396 bool ddr0_used = false; 397 bool ddr1_used = false; 398 399 for (i = 0; i < 8; i++) { 400 nodeid = in_le64(hnf_sam_ctrl) & CCN_HN_F_SAM_NODEID_MASK; 401 if (nodeid == CCN_HN_F_SAM_NODEID_DDR0) { 402 ddr0_used = true; 403 } else if (nodeid == CCN_HN_F_SAM_NODEID_DDR1) { 404 ddr1_used = true; 405 } else { 406 printf("Unknown nodeid in HN-F SAM control: 0x%llx\n", 407 nodeid); 408 } 409 hnf_sam_ctrl += (CCI_HN_F_1_BASE - CCI_HN_F_0_BASE); 410 } 411 if (!ddr0_used && !ddr1_used) { 412 printf("Invalid configuration in HN-F SAM control\n"); 413 return; 414 } 415 416 if (!ddr0_used && info->first_ctrl == 0) { 417 info->first_ctrl = 1; 418 info->num_ctrls = 1; 419 debug("First DDR controller disabled\n"); 420 return; 421 } 422 423 if (!ddr1_used && info->first_ctrl + info->num_ctrls > 1) { 424 info->num_ctrls = 1; 425 debug("Second DDR controller disabled\n"); 426 } 427 #endif 428 } 429
