2 * Copyright 2014-2015 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
9 #include <fsl_ddr_sdram.h>
10 #include <asm/processor.h>
11 #include <fsl_immap.h>
13 #include <fsl_errata.h>
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)
21 ddr_out32(ptr, value);
23 while (ddr_in32(ptr) & bits) {
28 puts("Error: wait for clear timeout.\n");
32 #if (CONFIG_CHIP_SELECTS_PER_CTRL > 4)
33 #error Invalid setting for CONFIG_CHIP_SELECTS_PER_CTRL
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.
45 void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
46 unsigned int ctrl_num, int step)
48 unsigned int i, bus_width;
49 struct ccsr_ddr __iomem *ddr;
51 u32 total_gb_size_per_controller;
53 #ifdef CONFIG_SYS_FSL_ERRATUM_A008511
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;
59 #ifdef CONFIG_SYS_FSL_ERRATUM_A009942
63 #ifdef CONFIG_FSL_DDR_BIST
64 u32 mtcr, err_detect, err_sbe;
65 u32 cs0_bnds, cs1_bnds, cs2_bnds, cs3_bnds, cs0_config;
67 #ifdef CONFIG_FSL_DDR_BIST
68 char buffer[CONFIG_SYS_CBSIZE];
73 ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR;
75 #if defined(CONFIG_SYS_FSL_DDR2_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 1)
77 ddr = (void *)CONFIG_SYS_FSL_DDR2_ADDR;
80 #if defined(CONFIG_SYS_FSL_DDR3_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 2)
82 ddr = (void *)CONFIG_SYS_FSL_DDR3_ADDR;
85 #if defined(CONFIG_SYS_FSL_DDR4_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 3)
87 ddr = (void *)CONFIG_SYS_FSL_DDR4_ADDR;
91 printf("%s unexpected ctrl_num = %u\n", __func__, ctrl_num);
99 ddr_out32(&ddr->eor, regs->ddr_eor);
101 ddr_out32(&ddr->sdram_clk_cntl, regs->ddr_sdram_clk_cntl);
103 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
105 ddr_out32(&ddr->cs0_bnds, regs->cs[i].bnds);
106 ddr_out32(&ddr->cs0_config, regs->cs[i].config);
107 ddr_out32(&ddr->cs0_config_2, regs->cs[i].config_2);
110 ddr_out32(&ddr->cs1_bnds, regs->cs[i].bnds);
111 ddr_out32(&ddr->cs1_config, regs->cs[i].config);
112 ddr_out32(&ddr->cs1_config_2, regs->cs[i].config_2);
115 ddr_out32(&ddr->cs2_bnds, regs->cs[i].bnds);
116 ddr_out32(&ddr->cs2_config, regs->cs[i].config);
117 ddr_out32(&ddr->cs2_config_2, regs->cs[i].config_2);
120 ddr_out32(&ddr->cs3_bnds, regs->cs[i].bnds);
121 ddr_out32(&ddr->cs3_config, regs->cs[i].config);
122 ddr_out32(&ddr->cs3_config_2, regs->cs[i].config_2);
126 ddr_out32(&ddr->timing_cfg_3, regs->timing_cfg_3);
127 ddr_out32(&ddr->timing_cfg_0, regs->timing_cfg_0);
128 ddr_out32(&ddr->timing_cfg_1, regs->timing_cfg_1);
129 ddr_out32(&ddr->timing_cfg_2, regs->timing_cfg_2);
130 ddr_out32(&ddr->timing_cfg_4, regs->timing_cfg_4);
131 ddr_out32(&ddr->timing_cfg_5, regs->timing_cfg_5);
132 ddr_out32(&ddr->timing_cfg_6, regs->timing_cfg_6);
133 ddr_out32(&ddr->timing_cfg_7, regs->timing_cfg_7);
134 ddr_out32(&ddr->timing_cfg_8, regs->timing_cfg_8);
135 ddr_out32(&ddr->timing_cfg_9, regs->timing_cfg_9);
136 ddr_out32(&ddr->ddr_zq_cntl, regs->ddr_zq_cntl);
137 ddr_out32(&ddr->dq_map_0, regs->dq_map_0);
138 ddr_out32(&ddr->dq_map_1, regs->dq_map_1);
139 ddr_out32(&ddr->dq_map_2, regs->dq_map_2);
140 ddr_out32(&ddr->dq_map_3, regs->dq_map_3);
141 ddr_out32(&ddr->sdram_cfg_3, regs->ddr_sdram_cfg_3);
142 ddr_out32(&ddr->sdram_mode, regs->ddr_sdram_mode);
143 ddr_out32(&ddr->sdram_mode_2, regs->ddr_sdram_mode_2);
144 ddr_out32(&ddr->sdram_mode_3, regs->ddr_sdram_mode_3);
145 ddr_out32(&ddr->sdram_mode_4, regs->ddr_sdram_mode_4);
146 ddr_out32(&ddr->sdram_mode_5, regs->ddr_sdram_mode_5);
147 ddr_out32(&ddr->sdram_mode_6, regs->ddr_sdram_mode_6);
148 ddr_out32(&ddr->sdram_mode_7, regs->ddr_sdram_mode_7);
149 ddr_out32(&ddr->sdram_mode_8, regs->ddr_sdram_mode_8);
150 ddr_out32(&ddr->sdram_mode_9, regs->ddr_sdram_mode_9);
151 ddr_out32(&ddr->sdram_mode_10, regs->ddr_sdram_mode_10);
152 ddr_out32(&ddr->sdram_mode_11, regs->ddr_sdram_mode_11);
153 ddr_out32(&ddr->sdram_mode_12, regs->ddr_sdram_mode_12);
154 ddr_out32(&ddr->sdram_mode_13, regs->ddr_sdram_mode_13);
155 ddr_out32(&ddr->sdram_mode_14, regs->ddr_sdram_mode_14);
156 ddr_out32(&ddr->sdram_mode_15, regs->ddr_sdram_mode_15);
157 ddr_out32(&ddr->sdram_mode_16, regs->ddr_sdram_mode_16);
158 ddr_out32(&ddr->sdram_md_cntl, regs->ddr_sdram_md_cntl);
159 #ifdef CONFIG_SYS_FSL_ERRATUM_A009663
160 ddr_out32(&ddr->sdram_interval,
161 regs->ddr_sdram_interval & ~SDRAM_INTERVAL_BSTOPRE);
163 ddr_out32(&ddr->sdram_interval, regs->ddr_sdram_interval);
165 ddr_out32(&ddr->sdram_data_init, regs->ddr_data_init);
166 ddr_out32(&ddr->ddr_wrlvl_cntl, regs->ddr_wrlvl_cntl);
167 #ifndef CONFIG_SYS_FSL_DDR_EMU
169 * Skip these two registers if running on emulator
170 * because emulator doesn't have skew between bytes.
173 if (regs->ddr_wrlvl_cntl_2)
174 ddr_out32(&ddr->ddr_wrlvl_cntl_2, regs->ddr_wrlvl_cntl_2);
175 if (regs->ddr_wrlvl_cntl_3)
176 ddr_out32(&ddr->ddr_wrlvl_cntl_3, regs->ddr_wrlvl_cntl_3);
179 ddr_out32(&ddr->ddr_sr_cntr, regs->ddr_sr_cntr);
180 ddr_out32(&ddr->ddr_sdram_rcw_1, regs->ddr_sdram_rcw_1);
181 ddr_out32(&ddr->ddr_sdram_rcw_2, regs->ddr_sdram_rcw_2);
182 ddr_out32(&ddr->ddr_sdram_rcw_3, regs->ddr_sdram_rcw_3);
183 ddr_out32(&ddr->ddr_sdram_rcw_4, regs->ddr_sdram_rcw_4);
184 ddr_out32(&ddr->ddr_sdram_rcw_5, regs->ddr_sdram_rcw_5);
185 ddr_out32(&ddr->ddr_sdram_rcw_6, regs->ddr_sdram_rcw_6);
186 ddr_out32(&ddr->ddr_cdr1, regs->ddr_cdr1);
187 #ifdef CONFIG_DEEP_SLEEP
188 if (is_warm_boot()) {
189 ddr_out32(&ddr->sdram_cfg_2,
190 regs->ddr_sdram_cfg_2 & ~SDRAM_CFG2_D_INIT);
191 ddr_out32(&ddr->init_addr, CONFIG_SYS_SDRAM_BASE);
192 ddr_out32(&ddr->init_ext_addr, DDR_INIT_ADDR_EXT_UIA);
194 /* DRAM VRef will not be trained */
195 ddr_out32(&ddr->ddr_cdr2,
196 regs->ddr_cdr2 & ~DDR_CDR2_VREF_TRAIN_EN);
200 ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2);
201 ddr_out32(&ddr->init_addr, regs->ddr_init_addr);
202 ddr_out32(&ddr->init_ext_addr, regs->ddr_init_ext_addr);
203 ddr_out32(&ddr->ddr_cdr2, regs->ddr_cdr2);
206 #ifdef CONFIG_SYS_FSL_ERRATUM_A009803
208 if (regs->ddr_sdram_cfg & SDRAM_CFG_RD_EN) { /* for RDIMM */
209 ddr_out32(&ddr->ddr_sdram_rcw_2,
210 regs->ddr_sdram_rcw_2 & ~0x0f000000);
213 ddr_out32(&ddr->err_disable, regs->err_disable | DDR_ERR_DISABLE_APED);
215 ddr_out32(&ddr->err_disable, regs->err_disable);
217 ddr_out32(&ddr->err_int_en, regs->err_int_en);
218 for (i = 0; i < 32; i++) {
219 if (regs->debug[i]) {
220 debug("Write to debug_%d as %08x\n",
221 i+1, regs->debug[i]);
222 ddr_out32(&ddr->debug[i], regs->debug[i]);
225 #ifdef CONFIG_SYS_FSL_ERRATUM_A008378
226 /* Erratum applies when accumulated ECC is used, or DBI is enabled */
227 #define IS_ACC_ECC_EN(v) ((v) & 0x4)
228 #define IS_DBI(v) ((((v) >> 12) & 0x3) == 0x2)
229 if (has_erratum_a008378()) {
230 if (IS_ACC_ECC_EN(regs->ddr_sdram_cfg) ||
231 IS_DBI(regs->ddr_sdram_cfg_3))
232 ddr_setbits32(&ddr->debug[28], 0x9 << 20);
236 #ifdef CONFIG_SYS_FSL_ERRATUM_A008511
238 /* This erraum only applies to verion 5.2.0 */
239 if (fsl_ddr_get_version(ctrl_num) == 0x50200) {
240 /* Disable DRAM VRef training */
241 ddr_out32(&ddr->ddr_cdr2,
242 regs->ddr_cdr2 & ~DDR_CDR2_VREF_TRAIN_EN);
243 /* disable transmit bit deskew */
244 temp32 = ddr_in32(&ddr->debug[28]);
245 temp32 |= DDR_TX_BD_DIS;
246 ddr_out32(&ddr->debug[28], temp32);
248 ddr_out32(&ddr->sdram_cfg_2,
249 regs->ddr_sdram_cfg_2 & ~SDRAM_CFG2_D_INIT);
250 ddr_out32(&ddr->debug[25], 0x9000);
254 #ifdef CONFIG_SYS_FSL_ERRATUM_A009801
255 temp32 = ddr_in32(&ddr->debug[25]);
256 temp32 &= ~DDR_CAS_TO_PRE_SUB_MASK;
257 temp32 |= 9 << DDR_CAS_TO_PRE_SUB_SHIFT;
258 ddr_out32(&ddr->debug[25], temp32);
261 #ifdef CONFIG_SYS_FSL_ERRATUM_A009942
262 ddr_freq = get_ddr_freq(ctrl_num) / 1000000;
263 tmp = ddr_in32(&ddr->debug[28]);
264 if (ddr_freq <= 1333)
265 ddr_out32(&ddr->debug[28], tmp | 0x0080006a);
266 else if (ddr_freq <= 1600)
267 ddr_out32(&ddr->debug[28], tmp | 0x0070006f);
268 else if (ddr_freq <= 1867)
269 ddr_out32(&ddr->debug[28], tmp | 0x00700076);
270 else if (ddr_freq <= 2133)
271 ddr_out32(&ddr->debug[28], tmp | 0x0060007b);
275 * For RDIMMs, JEDEC spec requires clocks to be stable before reset is
276 * deasserted. Clocks start when any chip select is enabled and clock
277 * control register is set. Because all DDR components are connected to
278 * one reset signal, this needs to be done in two steps. Step 1 is to
279 * get the clocks started. Step 2 resumes after reset signal is
288 /* Set, but do not enable the memory */
289 temp_sdram_cfg = regs->ddr_sdram_cfg;
290 temp_sdram_cfg &= ~(SDRAM_CFG_MEM_EN);
291 ddr_out32(&ddr->sdram_cfg, temp_sdram_cfg);
294 * 500 painful micro-seconds must elapse between
295 * the DDR clock setup and the DDR config enable.
296 * DDR2 need 200 us, and DDR3 need 500 us from spec,
297 * we choose the max, that is 500 us for all of case.
303 #ifdef CONFIG_DEEP_SLEEP
304 if (is_warm_boot()) {
305 /* enter self-refresh */
306 temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg_2);
307 temp_sdram_cfg |= SDRAM_CFG2_FRC_SR;
308 ddr_out32(&ddr->sdram_cfg_2, temp_sdram_cfg);
309 /* do board specific memory setup */
310 board_mem_sleep_setup();
312 temp_sdram_cfg = (ddr_in32(&ddr->sdram_cfg) | SDRAM_CFG_BI);
315 temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg) & ~SDRAM_CFG_BI;
316 /* Let the controller go */
317 ddr_out32(&ddr->sdram_cfg, temp_sdram_cfg | SDRAM_CFG_MEM_EN);
321 #if defined(CONFIG_SYS_FSL_ERRATUM_A008511) || \
322 defined(CONFIG_SYS_FSL_ERRATUM_A009803)
324 /* This erraum only applies to verion 5.2.0 */
325 if (fsl_ddr_get_version(ctrl_num) == 0x50200) {
328 while (!(ddr_in32(&ddr->debug[1]) & 0x2) &&
334 printf("Controler %d timeout, debug_2 = %x\n",
335 ctrl_num, ddr_in32(&ddr->debug[1]));
338 #ifdef CONFIG_SYS_FSL_ERRATUM_A008511
339 /* The vref setting sequence is different for range 2 */
340 if (regs->ddr_cdr2 & DDR_CDR2_VREF_RANGE_2)
341 vref_seq = vref_seq2;
344 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
345 if (!(regs->cs[i].config & SDRAM_CS_CONFIG_EN))
348 mr6 = (regs->ddr_sdram_mode_10 >> 16) |
353 temp32 = mr6 | vref_seq[0];
354 set_wait_for_bits_clear(&ddr->sdram_md_cntl,
355 temp32, MD_CNTL_MD_EN);
357 debug("MR6 = 0x%08x\n", temp32);
358 temp32 = mr6 | vref_seq[1];
359 set_wait_for_bits_clear(&ddr->sdram_md_cntl,
360 temp32, MD_CNTL_MD_EN);
362 debug("MR6 = 0x%08x\n", temp32);
363 temp32 = mr6 | vref_seq[2];
364 set_wait_for_bits_clear(&ddr->sdram_md_cntl,
365 temp32, MD_CNTL_MD_EN);
367 debug("MR6 = 0x%08x\n", temp32);
369 ddr_out32(&ddr->sdram_md_cntl, 0);
370 temp32 = ddr_in32(&ddr->debug[28]);
371 temp32 &= ~DDR_TX_BD_DIS; /* Enable deskew */
372 ddr_out32(&ddr->debug[28], temp32);
373 ddr_out32(&ddr->debug[1], 0x400); /* restart deskew */
376 while (!(ddr_in32(&ddr->debug[1]) & 0x2) &&
382 printf("Controler %d timeout, debug_2 = %x\n",
383 ctrl_num, ddr_in32(&ddr->debug[1]));
386 ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2);
387 #endif /* CONFIG_SYS_FSL_ERRATUM_A008511 */
389 #ifdef CONFIG_SYS_FSL_ERRATUM_A009803
391 if (regs->ddr_sdram_cfg & SDRAM_CFG_RD_EN) {
392 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
393 if (!(regs->cs[i].config & SDRAM_CS_CONFIG_EN))
395 set_wait_for_bits_clear(&ddr->sdram_md_cntl,
404 ddr_out32(&ddr->err_disable,
405 regs->err_disable & ~DDR_ERR_DISABLE_APED);
410 total_gb_size_per_controller = 0;
411 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
412 if (!(regs->cs[i].config & 0x80000000))
414 total_gb_size_per_controller += 1 << (
415 ((regs->cs[i].config >> 14) & 0x3) + 2 +
416 ((regs->cs[i].config >> 8) & 0x7) + 12 +
417 ((regs->cs[i].config >> 4) & 0x3) + 0 +
418 ((regs->cs[i].config >> 0) & 0x7) + 8 +
419 3 - ((regs->ddr_sdram_cfg >> 19) & 0x3) -
420 26); /* minus 26 (count of 64M) */
422 if (fsl_ddr_get_intl3r() & 0x80000000) /* 3-way interleaving */
423 total_gb_size_per_controller *= 3;
424 else if (regs->cs[0].config & 0x20000000) /* 2-way interleaving */
425 total_gb_size_per_controller <<= 1;
427 * total memory / bus width = transactions needed
428 * transactions needed / data rate = seconds
429 * to add plenty of buffer, double the time
430 * For example, 2GB on 666MT/s 64-bit bus takes about 402ms
431 * Let's wait for 800ms
433 bus_width = 3 - ((ddr_in32(&ddr->sdram_cfg) & SDRAM_CFG_DBW_MASK)
434 >> SDRAM_CFG_DBW_SHIFT);
435 timeout = ((total_gb_size_per_controller << (6 - bus_width)) * 100 /
436 (get_ddr_freq(ctrl_num) >> 20)) << 2;
437 total_gb_size_per_controller >>= 4; /* shift down to gb size */
438 debug("total %d GB\n", total_gb_size_per_controller);
439 debug("Need to wait up to %d * 10ms\n", timeout);
441 /* Poll DDR_SDRAM_CFG_2[D_INIT] bit until auto-data init is done. */
442 while ((ddr_in32(&ddr->sdram_cfg_2) & SDRAM_CFG2_D_INIT) &&
444 udelay(10000); /* throttle polling rate */
449 printf("Waiting for D_INIT timeout. Memory may not work.\n");
451 #ifdef CONFIG_SYS_FSL_ERRATUM_A009663
452 ddr_out32(&ddr->sdram_interval, regs->ddr_sdram_interval);
455 #ifdef CONFIG_DEEP_SLEEP
456 if (is_warm_boot()) {
457 /* exit self-refresh */
458 temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg_2);
459 temp_sdram_cfg &= ~SDRAM_CFG2_FRC_SR;
460 ddr_out32(&ddr->sdram_cfg_2, temp_sdram_cfg);
464 #ifdef CONFIG_FSL_DDR_BIST
465 #define BIST_PATTERN1 0xFFFFFFFF
466 #define BIST_PATTERN2 0x0
467 #define BIST_CR 0x80010000
468 #define BIST_CR_EN 0x80000000
469 #define BIST_CR_STAT 0x00000001
470 #define CTLR_INTLV_MASK 0x20000000
471 /* Perform build-in test on memory. Three-way interleaving is not yet
472 * supported by this code. */
473 if (getenv_f("ddr_bist", buffer, CONFIG_SYS_CBSIZE) >= 0) {
474 puts("Running BIST test. This will take a while...");
475 cs0_config = ddr_in32(&ddr->cs0_config);
476 cs0_bnds = ddr_in32(&ddr->cs0_bnds);
477 cs1_bnds = ddr_in32(&ddr->cs1_bnds);
478 cs2_bnds = ddr_in32(&ddr->cs2_bnds);
479 cs3_bnds = ddr_in32(&ddr->cs3_bnds);
480 if (cs0_config & CTLR_INTLV_MASK) {
481 /* set bnds to non-interleaving */
482 ddr_out32(&ddr->cs0_bnds, (cs0_bnds & 0xfffefffe) >> 1);
483 ddr_out32(&ddr->cs1_bnds, (cs1_bnds & 0xfffefffe) >> 1);
484 ddr_out32(&ddr->cs2_bnds, (cs2_bnds & 0xfffefffe) >> 1);
485 ddr_out32(&ddr->cs3_bnds, (cs3_bnds & 0xfffefffe) >> 1);
487 ddr_out32(&ddr->mtp1, BIST_PATTERN1);
488 ddr_out32(&ddr->mtp2, BIST_PATTERN1);
489 ddr_out32(&ddr->mtp3, BIST_PATTERN2);
490 ddr_out32(&ddr->mtp4, BIST_PATTERN2);
491 ddr_out32(&ddr->mtp5, BIST_PATTERN1);
492 ddr_out32(&ddr->mtp6, BIST_PATTERN1);
493 ddr_out32(&ddr->mtp7, BIST_PATTERN2);
494 ddr_out32(&ddr->mtp8, BIST_PATTERN2);
495 ddr_out32(&ddr->mtp9, BIST_PATTERN1);
496 ddr_out32(&ddr->mtp10, BIST_PATTERN2);
498 ddr_out32(&ddr->mtcr, mtcr);
500 while (timeout > 0 && (mtcr & BIST_CR_EN)) {
503 mtcr = ddr_in32(&ddr->mtcr);
509 err_detect = ddr_in32(&ddr->err_detect);
510 err_sbe = ddr_in32(&ddr->err_sbe);
511 if (mtcr & BIST_CR_STAT) {
512 printf("BIST test failed on controller %d.\n",
515 if (err_detect || (err_sbe & 0xffff)) {
516 printf("ECC error detected on controller %d.\n",
520 if (cs0_config & CTLR_INTLV_MASK) {
521 /* restore bnds registers */
522 ddr_out32(&ddr->cs0_bnds, cs0_bnds);
523 ddr_out32(&ddr->cs1_bnds, cs1_bnds);
524 ddr_out32(&ddr->cs2_bnds, cs2_bnds);
525 ddr_out32(&ddr->cs3_bnds, cs3_bnds);