2 * Copyright 2008-2012 Freescale Semiconductor, Inc.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * Version 2 as published by the Free Software Foundation.
11 #include <asm/fsl_ddr_sdram.h>
12 #include <asm/processor.h>
14 #if (CONFIG_CHIP_SELECTS_PER_CTRL > 4)
15 #error Invalid setting for CONFIG_CHIP_SELECTS_PER_CTRL
18 void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
19 unsigned int ctrl_num)
21 unsigned int i, bus_width;
22 volatile ccsr_ddr_t *ddr;
24 u32 total_gb_size_per_controller;
25 int timeout, timeout_save;
26 #ifdef CONFIG_SYS_FSL_ERRATUM_DDR111_DDR134
27 volatile ccsr_local_ecm_t *ecm = (void *)CONFIG_SYS_MPC85xx_ECM_ADDR;
28 unsigned int csn_bnds_backup = 0, cs_sa, cs_ea, *csn_bnds_t;
34 ddr = (void *)CONFIG_SYS_MPC85xx_DDR_ADDR;
36 #if defined(CONFIG_SYS_MPC85xx_DDR2_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 1)
38 ddr = (void *)CONFIG_SYS_MPC85xx_DDR2_ADDR;
41 #if defined(CONFIG_SYS_MPC85xx_DDR3_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 2)
43 ddr = (void *)CONFIG_SYS_MPC85xx_DDR3_ADDR;
46 #if defined(CONFIG_SYS_MPC85xx_DDR4_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 3)
48 ddr = (void *)CONFIG_SYS_MPC85xx_DDR4_ADDR;
52 printf("%s unexpected ctrl_num = %u\n", __FUNCTION__, ctrl_num);
57 out_be32(&ddr->eor, regs->ddr_eor);
58 #ifdef CONFIG_SYS_FSL_ERRATUM_DDR111_DDR134
59 debug("Workaround for ERRATUM_DDR111_DDR134\n");
60 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
61 cs_sa = (regs->cs[i].bnds >> 16) & 0xfff;
62 cs_ea = regs->cs[i].bnds & 0xfff;
63 if ((cs_sa <= 0xff) && (cs_ea >= 0xff)) {
65 csn_bnds_backup = regs->cs[i].bnds;
66 csn_bnds_t = (unsigned int *) ®s->cs[i].bnds;
68 *csn_bnds_t = regs->cs[i].bnds + 0x01000000;
70 *csn_bnds_t = regs->cs[i].bnds + 0x01000100;
71 debug("Found cs%d_bns (0x%08x) covering 0xff000000, "
72 "change it to 0x%x\n",
73 csn, csn_bnds_backup, regs->cs[i].bnds);
78 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
80 out_be32(&ddr->cs0_bnds, regs->cs[i].bnds);
81 out_be32(&ddr->cs0_config, regs->cs[i].config);
82 out_be32(&ddr->cs0_config_2, regs->cs[i].config_2);
85 out_be32(&ddr->cs1_bnds, regs->cs[i].bnds);
86 out_be32(&ddr->cs1_config, regs->cs[i].config);
87 out_be32(&ddr->cs1_config_2, regs->cs[i].config_2);
90 out_be32(&ddr->cs2_bnds, regs->cs[i].bnds);
91 out_be32(&ddr->cs2_config, regs->cs[i].config);
92 out_be32(&ddr->cs2_config_2, regs->cs[i].config_2);
95 out_be32(&ddr->cs3_bnds, regs->cs[i].bnds);
96 out_be32(&ddr->cs3_config, regs->cs[i].config);
97 out_be32(&ddr->cs3_config_2, regs->cs[i].config_2);
101 out_be32(&ddr->timing_cfg_3, regs->timing_cfg_3);
102 out_be32(&ddr->timing_cfg_0, regs->timing_cfg_0);
103 out_be32(&ddr->timing_cfg_1, regs->timing_cfg_1);
104 out_be32(&ddr->timing_cfg_2, regs->timing_cfg_2);
105 out_be32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2);
106 out_be32(&ddr->sdram_mode, regs->ddr_sdram_mode);
107 out_be32(&ddr->sdram_mode_2, regs->ddr_sdram_mode_2);
108 out_be32(&ddr->sdram_mode_3, regs->ddr_sdram_mode_3);
109 out_be32(&ddr->sdram_mode_4, regs->ddr_sdram_mode_4);
110 out_be32(&ddr->sdram_mode_5, regs->ddr_sdram_mode_5);
111 out_be32(&ddr->sdram_mode_6, regs->ddr_sdram_mode_6);
112 out_be32(&ddr->sdram_mode_7, regs->ddr_sdram_mode_7);
113 out_be32(&ddr->sdram_mode_8, regs->ddr_sdram_mode_8);
114 out_be32(&ddr->sdram_md_cntl, regs->ddr_sdram_md_cntl);
115 out_be32(&ddr->sdram_interval, regs->ddr_sdram_interval);
116 out_be32(&ddr->sdram_data_init, regs->ddr_data_init);
117 out_be32(&ddr->sdram_clk_cntl, regs->ddr_sdram_clk_cntl);
118 out_be32(&ddr->init_addr, regs->ddr_init_addr);
119 out_be32(&ddr->init_ext_addr, regs->ddr_init_ext_addr);
121 out_be32(&ddr->timing_cfg_4, regs->timing_cfg_4);
122 out_be32(&ddr->timing_cfg_5, regs->timing_cfg_5);
123 out_be32(&ddr->ddr_zq_cntl, regs->ddr_zq_cntl);
124 out_be32(&ddr->ddr_wrlvl_cntl, regs->ddr_wrlvl_cntl);
125 if (regs->ddr_wrlvl_cntl_2)
126 out_be32(&ddr->ddr_wrlvl_cntl_2, regs->ddr_wrlvl_cntl_2);
127 if (regs->ddr_wrlvl_cntl_3)
128 out_be32(&ddr->ddr_wrlvl_cntl_3, regs->ddr_wrlvl_cntl_3);
130 out_be32(&ddr->ddr_sr_cntr, regs->ddr_sr_cntr);
131 out_be32(&ddr->ddr_sdram_rcw_1, regs->ddr_sdram_rcw_1);
132 out_be32(&ddr->ddr_sdram_rcw_2, regs->ddr_sdram_rcw_2);
133 out_be32(&ddr->ddr_cdr1, regs->ddr_cdr1);
134 out_be32(&ddr->ddr_cdr2, regs->ddr_cdr2);
135 out_be32(&ddr->err_disable, regs->err_disable);
136 out_be32(&ddr->err_int_en, regs->err_int_en);
137 for (i = 0; i < 32; i++) {
138 if (regs->debug[i]) {
139 debug("Write to debug_%d as %08x\n", i+1, regs->debug[i]);
140 out_be32(&ddr->debug[i], regs->debug[i]);
144 #ifdef CONFIG_SYS_FSL_ERRATUM_DDR_A003474
145 out_be32(&ddr->debug[12], 0x00000015);
146 out_be32(&ddr->debug[21], 0x24000000);
147 #endif /* CONFIG_SYS_FSL_ERRATUM_DDR_A003474 */
149 /* Set, but do not enable the memory */
150 temp_sdram_cfg = regs->ddr_sdram_cfg;
151 temp_sdram_cfg &= ~(SDRAM_CFG_MEM_EN);
152 out_be32(&ddr->sdram_cfg, temp_sdram_cfg);
153 #ifdef CONFIG_SYS_FSL_ERRATUM_DDR_A003
154 debug("Workaround for ERRATUM_DDR_A003\n");
155 if (regs->ddr_sdram_rcw_2 & 0x00f00000) {
156 out_be32(&ddr->timing_cfg_2, regs->timing_cfg_2 & 0xf07fffff);
157 out_be32(&ddr->debug[2], 0x00000400);
158 out_be32(&ddr->ddr_zq_cntl, regs->ddr_zq_cntl & 0x7fffffff);
159 out_be32(&ddr->ddr_wrlvl_cntl, regs->ddr_wrlvl_cntl & 0x7fffffff);
160 out_be32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2 & 0xffffffeb);
161 out_be32(&ddr->mtcr, 0);
162 out_be32(&ddr->debug[12], 0x00000015);
163 out_be32(&ddr->debug[21], 0x24000000);
164 out_be32(&ddr->sdram_interval, regs->ddr_sdram_interval & 0xffff);
165 out_be32(&ddr->sdram_cfg, temp_sdram_cfg | SDRAM_CFG_BI | SDRAM_CFG_MEM_EN);
167 asm volatile("sync;isync");
168 while (!(in_be32(&ddr->debug[1]) & 0x2))
171 switch (regs->ddr_sdram_rcw_2 & 0x00f00000) {
173 out_be32(&ddr->sdram_md_cntl,
175 MD_CNTL_CS_SEL_CS0_CS1 |
178 MD_CNTL_MD_VALUE(0x02));
181 out_be32(&ddr->sdram_md_cntl,
183 MD_CNTL_CS_SEL_CS0_CS1 |
186 MD_CNTL_MD_VALUE(0x0a));
189 out_be32(&ddr->sdram_md_cntl,
191 MD_CNTL_CS_SEL_CS0_CS1 |
194 MD_CNTL_MD_VALUE(0x12));
197 out_be32(&ddr->sdram_md_cntl,
199 MD_CNTL_CS_SEL_CS0_CS1 |
202 MD_CNTL_MD_VALUE(0x1a));
205 out_be32(&ddr->sdram_md_cntl,
207 MD_CNTL_CS_SEL_CS0_CS1 |
210 MD_CNTL_MD_VALUE(0x02));
211 printf("Unsupported RC10\n");
215 while (in_be32(&ddr->sdram_md_cntl) & 0x80000000)
218 out_be32(&ddr->sdram_cfg, temp_sdram_cfg);
219 out_be32(&ddr->timing_cfg_2, regs->timing_cfg_2);
220 out_be32(&ddr->debug[2], 0x0);
221 out_be32(&ddr->ddr_zq_cntl, regs->ddr_zq_cntl);
222 out_be32(&ddr->ddr_wrlvl_cntl, regs->ddr_wrlvl_cntl);
223 out_be32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2);
224 out_be32(&ddr->debug[12], 0x0);
225 out_be32(&ddr->debug[21], 0x0);
226 out_be32(&ddr->sdram_interval, regs->ddr_sdram_interval);
231 * For 8572 DDR1 erratum - DDR controller may enter illegal state
232 * when operatiing in 32-bit bus mode with 4-beat bursts,
233 * This erratum does not affect DDR3 mode, only for DDR2 mode.
235 #ifdef CONFIG_SYS_FSL_ERRATUM_DDR_115
236 debug("Workaround for ERRATUM_DDR_115\n");
237 if ((((in_be32(&ddr->sdram_cfg) >> 24) & 0x7) == SDRAM_TYPE_DDR2)
238 && in_be32(&ddr->sdram_cfg) & 0x80000) {
239 /* set DEBUG_1[31] */
240 setbits_be32(&ddr->debug[0], 1);
243 #ifdef CONFIG_SYS_FSL_ERRATUM_DDR111_DDR134
244 debug("Workaround for ERRATUM_DDR111_DDR134\n");
246 * This is the combined workaround for DDR111 and DDR134
247 * following the published errata for MPC8572
250 /* 1. Set EEBACR[3] */
251 setbits_be32(&ecm->eebacr, 0x10000000);
252 debug("Setting EEBACR[3] to 0x%08x\n", in_be32(&ecm->eebacr));
254 /* 2. Set DINIT in SDRAM_CFG_2*/
255 setbits_be32(&ddr->sdram_cfg_2, SDRAM_CFG2_D_INIT);
256 debug("Setting sdram_cfg_2[D_INIT] to 0x%08x\n",
257 in_be32(&ddr->sdram_cfg_2));
259 /* 3. Set DEBUG_3[21] */
260 setbits_be32(&ddr->debug[2], 0x400);
261 debug("Setting DEBUG_3[21] to 0x%08x\n", in_be32(&ddr->debug[2]));
263 #endif /* part 1 of the workaound */
266 * 500 painful micro-seconds must elapse between
267 * the DDR clock setup and the DDR config enable.
268 * DDR2 need 200 us, and DDR3 need 500 us from spec,
269 * we choose the max, that is 500 us for all of case.
272 asm volatile("sync;isync");
274 /* Let the controller go */
275 temp_sdram_cfg = in_be32(&ddr->sdram_cfg) & ~SDRAM_CFG_BI;
276 out_be32(&ddr->sdram_cfg, temp_sdram_cfg | SDRAM_CFG_MEM_EN);
277 asm volatile("sync;isync");
279 total_gb_size_per_controller = 0;
280 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
281 if (!(regs->cs[i].config & 0x80000000))
283 total_gb_size_per_controller += 1 << (
284 ((regs->cs[i].config >> 14) & 0x3) + 2 +
285 ((regs->cs[i].config >> 8) & 0x7) + 12 +
286 ((regs->cs[i].config >> 0) & 0x7) + 8 +
287 3 - ((regs->ddr_sdram_cfg >> 19) & 0x3) -
288 26); /* minus 26 (count of 64M) */
290 if (fsl_ddr_get_intl3r() & 0x80000000) /* 3-way interleaving */
291 total_gb_size_per_controller *= 3;
292 else if (regs->cs[0].config & 0x20000000) /* 2-way interleaving */
293 total_gb_size_per_controller <<= 1;
295 * total memory / bus width = transactions needed
296 * transactions needed / data rate = seconds
297 * to add plenty of buffer, double the time
298 * For example, 2GB on 666MT/s 64-bit bus takes about 402ms
299 * Let's wait for 800ms
301 bus_width = 3 - ((ddr->sdram_cfg & SDRAM_CFG_DBW_MASK)
302 >> SDRAM_CFG_DBW_SHIFT);
303 timeout = ((total_gb_size_per_controller << (6 - bus_width)) * 100 /
304 (get_ddr_freq(0) >> 20)) << 1;
305 timeout_save = timeout;
306 total_gb_size_per_controller >>= 4; /* shift down to gb size */
307 debug("total %d GB\n", total_gb_size_per_controller);
308 debug("Need to wait up to %d * 10ms\n", timeout);
310 /* Poll DDR_SDRAM_CFG_2[D_INIT] bit until auto-data init is done. */
311 while ((in_be32(&ddr->sdram_cfg_2) & SDRAM_CFG2_D_INIT) &&
313 udelay(10000); /* throttle polling rate */
318 printf("Waiting for D_INIT timeout. Memory may not work.\n");
320 #ifdef CONFIG_SYS_FSL_ERRATUM_DDR111_DDR134
321 /* continue this workaround */
323 /* 4. Clear DEBUG3[21] */
324 clrbits_be32(&ddr->debug[2], 0x400);
325 debug("Clearing D3[21] to 0x%08x\n", in_be32(&ddr->debug[2]));
327 /* DDR134 workaround starts */
328 /* A: Clear sdram_cfg_2[odt_cfg] */
329 clrbits_be32(&ddr->sdram_cfg_2, SDRAM_CFG2_ODT_CFG_MASK);
330 debug("Clearing SDRAM_CFG2[ODT_CFG] to 0x%08x\n",
331 in_be32(&ddr->sdram_cfg_2));
333 /* B: Set DEBUG1[15] */
334 setbits_be32(&ddr->debug[0], 0x10000);
335 debug("Setting D1[15] to 0x%08x\n", in_be32(&ddr->debug[0]));
337 /* C: Set timing_cfg_2[cpo] to 0b11111 */
338 setbits_be32(&ddr->timing_cfg_2, TIMING_CFG_2_CPO_MASK);
339 debug("Setting TMING_CFG_2[CPO] to 0x%08x\n",
340 in_be32(&ddr->timing_cfg_2));
342 /* D: Set D6 to 0x9f9f9f9f */
343 out_be32(&ddr->debug[5], 0x9f9f9f9f);
344 debug("Setting D6 to 0x%08x\n", in_be32(&ddr->debug[5]));
346 /* E: Set D7 to 0x9f9f9f9f */
347 out_be32(&ddr->debug[6], 0x9f9f9f9f);
348 debug("Setting D7 to 0x%08x\n", in_be32(&ddr->debug[6]));
351 setbits_be32(&ddr->debug[1], 0x800);
352 debug("Setting D2[20] to 0x%08x\n", in_be32(&ddr->debug[1]));
354 /* G: Poll on D2[20] until cleared */
355 while (in_be32(&ddr->debug[1]) & 0x800)
356 udelay(10000); /* throttle polling rate */
358 /* H: Clear D1[15] */
359 clrbits_be32(&ddr->debug[0], 0x10000);
360 debug("Setting D1[15] to 0x%08x\n", in_be32(&ddr->debug[0]));
362 /* I: Set sdram_cfg_2[odt_cfg] */
363 setbits_be32(&ddr->sdram_cfg_2,
364 regs->ddr_sdram_cfg_2 & SDRAM_CFG2_ODT_CFG_MASK);
365 debug("Setting sdram_cfg_2 to 0x%08x\n", in_be32(&ddr->sdram_cfg_2));
367 /* Continuing with the DDR111 workaround */
369 setbits_be32(&ddr->debug[1], 0x400);
370 debug("Setting D2[21] to 0x%08x\n", in_be32(&ddr->debug[1]));
372 /* 6. Poll D2[21] until its cleared */
373 while (in_be32(&ddr->debug[1]) & 0x400)
374 udelay(10000); /* throttle polling rate */
376 /* 7. Wait for state machine 2nd run, roughly 400ms/GB */
377 debug("Wait for %d * 10ms\n", timeout_save);
378 udelay(timeout_save * 10000);
380 /* 8. Set sdram_cfg_2[dinit] if options requires */
381 setbits_be32(&ddr->sdram_cfg_2,
382 regs->ddr_sdram_cfg_2 & SDRAM_CFG2_D_INIT);
383 debug("Setting sdram_cfg_2 to 0x%08x\n", in_be32(&ddr->sdram_cfg_2));
385 /* 9. Poll until dinit is cleared */
386 timeout = timeout_save;
387 debug("Need to wait up to %d * 10ms\n", timeout);
388 while ((in_be32(&ddr->sdram_cfg_2) & SDRAM_CFG2_D_INIT) &&
390 udelay(10000); /* throttle polling rate */
395 printf("Waiting for D_INIT timeout. Memory may not work.\n");
397 /* 10. Clear EEBACR[3] */
398 clrbits_be32(&ecm->eebacr, 10000000);
399 debug("Clearing EEBACR[3] to 0x%08x\n", in_be32(&ecm->eebacr));
402 csn_bnds_t = (unsigned int *) ®s->cs[csn].bnds;
403 *csn_bnds_t = csn_bnds_backup;
404 debug("Change cs%d_bnds back to 0x%08x\n",
405 csn, regs->cs[csn].bnds);
406 setbits_be32(&ddr->sdram_cfg, 0x2); /* MEM_HALT */
409 out_be32(&ddr->cs0_bnds, regs->cs[csn].bnds);
412 out_be32(&ddr->cs1_bnds, regs->cs[csn].bnds);
415 out_be32(&ddr->cs2_bnds, regs->cs[csn].bnds);
418 out_be32(&ddr->cs3_bnds, regs->cs[csn].bnds);
421 clrbits_be32(&ddr->sdram_cfg, 0x2);
423 #endif /* CONFIG_SYS_FSL_ERRATUM_DDR111_DDR134 */