xref: /openbmc/u-boot/drivers/ddr/fsl/fsl_ddr_gen4.c (revision 0c01c3e8)
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 
14 #ifdef CONFIG_SYS_FSL_ERRATUM_A008511
15 static void set_wait_for_bits_clear(void *ptr, u32 value, u32 bits)
16 {
17 	int timeout = 1000;
18 
19 	ddr_out32(ptr, value);
20 
21 	while (ddr_in32(ptr) & bits) {
22 		udelay(100);
23 		timeout--;
24 	}
25 	if (timeout <= 0)
26 		puts("Error: A007865 wait for clear timeout.\n");
27 }
28 #endif /* CONFIG_SYS_FSL_ERRATUM_A008511 */
29 
30 #if (CONFIG_CHIP_SELECTS_PER_CTRL > 4)
31 #error Invalid setting for CONFIG_CHIP_SELECTS_PER_CTRL
32 #endif
33 
34 /*
35  * regs has the to-be-set values for DDR controller registers
36  * ctrl_num is the DDR controller number
37  * step: 0 goes through the initialization in one pass
38  *       1 sets registers and returns before enabling controller
39  *       2 resumes from step 1 and continues to initialize
40  * Dividing the initialization to two steps to deassert DDR reset signal
41  * to comply with JEDEC specs for RDIMMs.
42  */
43 void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
44 			     unsigned int ctrl_num, int step)
45 {
46 	unsigned int i, bus_width;
47 	struct ccsr_ddr __iomem *ddr;
48 	u32 temp_sdram_cfg;
49 	u32 total_gb_size_per_controller;
50 	int timeout;
51 #if defined(CONFIG_SYS_FSL_ERRATUM_A008336) || \
52 	defined(CONFIG_SYS_FSL_ERRATUM_A008514)
53 	u32 *eddrtqcr1;
54 #endif
55 #ifdef CONFIG_SYS_FSL_ERRATUM_A008511
56 	u32 temp32, mr6;
57 #endif
58 #ifdef CONFIG_FSL_DDR_BIST
59 	u32 mtcr, err_detect, err_sbe;
60 	u32 cs0_bnds, cs1_bnds, cs2_bnds, cs3_bnds, cs0_config;
61 #endif
62 #ifdef CONFIG_FSL_DDR_BIST
63 	char buffer[CONFIG_SYS_CBSIZE];
64 #endif
65 
66 	switch (ctrl_num) {
67 	case 0:
68 		ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR;
69 #if defined(CONFIG_SYS_FSL_ERRATUM_A008336) || \
70 	defined(CONFIG_SYS_FSL_ERRATUM_A008514)
71 		eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR_ADDR + 0x800;
72 #endif
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 #if defined(CONFIG_SYS_FSL_ERRATUM_A008336) || \
78 	defined(CONFIG_SYS_FSL_ERRATUM_A008514)
79 		eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR2_ADDR + 0x800;
80 #endif
81 		break;
82 #endif
83 #if defined(CONFIG_SYS_FSL_DDR3_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 2)
84 	case 2:
85 		ddr = (void *)CONFIG_SYS_FSL_DDR3_ADDR;
86 #if defined(CONFIG_SYS_FSL_ERRATUM_A008336) || \
87 	defined(CONFIG_SYS_FSL_ERRATUM_A008514)
88 		eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR3_ADDR + 0x800;
89 #endif
90 		break;
91 #endif
92 #if defined(CONFIG_SYS_FSL_DDR4_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 3)
93 	case 3:
94 		ddr = (void *)CONFIG_SYS_FSL_DDR4_ADDR;
95 #if defined(CONFIG_SYS_FSL_ERRATUM_A008336) || \
96 	defined(CONFIG_SYS_FSL_ERRATUM_A008514)
97 		eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR4_ADDR + 0x800;
98 #endif
99 		break;
100 #endif
101 	default:
102 		printf("%s unexpected ctrl_num = %u\n", __func__, ctrl_num);
103 		return;
104 	}
105 
106 	if (step == 2)
107 		goto step2;
108 
109 #ifdef CONFIG_SYS_FSL_ERRATUM_A008336
110 #ifdef CONFIG_LS2085A
111 	/* A008336 only applies to general DDR controllers */
112 	if ((ctrl_num == 0) || (ctrl_num == 1))
113 #endif
114 		ddr_out32(eddrtqcr1, 0x63b30002);
115 #endif
116 #ifdef CONFIG_SYS_FSL_ERRATUM_A008514
117 #ifdef CONFIG_LS2085A
118 	/* A008514 only applies to DP-DDR controler */
119 	if (ctrl_num == 2)
120 #endif
121 		ddr_out32(eddrtqcr1, 0x63b20002);
122 #endif
123 	if (regs->ddr_eor)
124 		ddr_out32(&ddr->eor, regs->ddr_eor);
125 
126 	ddr_out32(&ddr->sdram_clk_cntl, regs->ddr_sdram_clk_cntl);
127 
128 	for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
129 		if (i == 0) {
130 			ddr_out32(&ddr->cs0_bnds, regs->cs[i].bnds);
131 			ddr_out32(&ddr->cs0_config, regs->cs[i].config);
132 			ddr_out32(&ddr->cs0_config_2, regs->cs[i].config_2);
133 
134 		} else if (i == 1) {
135 			ddr_out32(&ddr->cs1_bnds, regs->cs[i].bnds);
136 			ddr_out32(&ddr->cs1_config, regs->cs[i].config);
137 			ddr_out32(&ddr->cs1_config_2, regs->cs[i].config_2);
138 
139 		} else if (i == 2) {
140 			ddr_out32(&ddr->cs2_bnds, regs->cs[i].bnds);
141 			ddr_out32(&ddr->cs2_config, regs->cs[i].config);
142 			ddr_out32(&ddr->cs2_config_2, regs->cs[i].config_2);
143 
144 		} else if (i == 3) {
145 			ddr_out32(&ddr->cs3_bnds, regs->cs[i].bnds);
146 			ddr_out32(&ddr->cs3_config, regs->cs[i].config);
147 			ddr_out32(&ddr->cs3_config_2, regs->cs[i].config_2);
148 		}
149 	}
150 
151 	ddr_out32(&ddr->timing_cfg_3, regs->timing_cfg_3);
152 	ddr_out32(&ddr->timing_cfg_0, regs->timing_cfg_0);
153 	ddr_out32(&ddr->timing_cfg_1, regs->timing_cfg_1);
154 	ddr_out32(&ddr->timing_cfg_2, regs->timing_cfg_2);
155 	ddr_out32(&ddr->timing_cfg_4, regs->timing_cfg_4);
156 	ddr_out32(&ddr->timing_cfg_5, regs->timing_cfg_5);
157 	ddr_out32(&ddr->timing_cfg_6, regs->timing_cfg_6);
158 	ddr_out32(&ddr->timing_cfg_7, regs->timing_cfg_7);
159 	ddr_out32(&ddr->timing_cfg_8, regs->timing_cfg_8);
160 	ddr_out32(&ddr->timing_cfg_9, regs->timing_cfg_9);
161 	ddr_out32(&ddr->ddr_zq_cntl, regs->ddr_zq_cntl);
162 	ddr_out32(&ddr->dq_map_0, regs->dq_map_0);
163 	ddr_out32(&ddr->dq_map_1, regs->dq_map_1);
164 	ddr_out32(&ddr->dq_map_2, regs->dq_map_2);
165 	ddr_out32(&ddr->dq_map_3, regs->dq_map_3);
166 	ddr_out32(&ddr->sdram_cfg_3, regs->ddr_sdram_cfg_3);
167 	ddr_out32(&ddr->sdram_mode, regs->ddr_sdram_mode);
168 	ddr_out32(&ddr->sdram_mode_2, regs->ddr_sdram_mode_2);
169 	ddr_out32(&ddr->sdram_mode_3, regs->ddr_sdram_mode_3);
170 	ddr_out32(&ddr->sdram_mode_4, regs->ddr_sdram_mode_4);
171 	ddr_out32(&ddr->sdram_mode_5, regs->ddr_sdram_mode_5);
172 	ddr_out32(&ddr->sdram_mode_6, regs->ddr_sdram_mode_6);
173 	ddr_out32(&ddr->sdram_mode_7, regs->ddr_sdram_mode_7);
174 	ddr_out32(&ddr->sdram_mode_8, regs->ddr_sdram_mode_8);
175 	ddr_out32(&ddr->sdram_mode_9, regs->ddr_sdram_mode_9);
176 	ddr_out32(&ddr->sdram_mode_10, regs->ddr_sdram_mode_10);
177 	ddr_out32(&ddr->sdram_mode_11, regs->ddr_sdram_mode_11);
178 	ddr_out32(&ddr->sdram_mode_12, regs->ddr_sdram_mode_12);
179 	ddr_out32(&ddr->sdram_mode_13, regs->ddr_sdram_mode_13);
180 	ddr_out32(&ddr->sdram_mode_14, regs->ddr_sdram_mode_14);
181 	ddr_out32(&ddr->sdram_mode_15, regs->ddr_sdram_mode_15);
182 	ddr_out32(&ddr->sdram_mode_16, regs->ddr_sdram_mode_16);
183 	ddr_out32(&ddr->sdram_md_cntl, regs->ddr_sdram_md_cntl);
184 	ddr_out32(&ddr->sdram_interval, regs->ddr_sdram_interval);
185 	ddr_out32(&ddr->sdram_data_init, regs->ddr_data_init);
186 	ddr_out32(&ddr->ddr_wrlvl_cntl, regs->ddr_wrlvl_cntl);
187 #ifndef CONFIG_SYS_FSL_DDR_EMU
188 	/*
189 	 * Skip these two registers if running on emulator
190 	 * because emulator doesn't have skew between bytes.
191 	 */
192 
193 	if (regs->ddr_wrlvl_cntl_2)
194 		ddr_out32(&ddr->ddr_wrlvl_cntl_2, regs->ddr_wrlvl_cntl_2);
195 	if (regs->ddr_wrlvl_cntl_3)
196 		ddr_out32(&ddr->ddr_wrlvl_cntl_3, regs->ddr_wrlvl_cntl_3);
197 #endif
198 
199 	ddr_out32(&ddr->ddr_sr_cntr, regs->ddr_sr_cntr);
200 	ddr_out32(&ddr->ddr_sdram_rcw_1, regs->ddr_sdram_rcw_1);
201 	ddr_out32(&ddr->ddr_sdram_rcw_2, regs->ddr_sdram_rcw_2);
202 	ddr_out32(&ddr->ddr_sdram_rcw_3, regs->ddr_sdram_rcw_3);
203 	ddr_out32(&ddr->ddr_sdram_rcw_4, regs->ddr_sdram_rcw_4);
204 	ddr_out32(&ddr->ddr_sdram_rcw_5, regs->ddr_sdram_rcw_5);
205 	ddr_out32(&ddr->ddr_sdram_rcw_6, regs->ddr_sdram_rcw_6);
206 	ddr_out32(&ddr->ddr_cdr1, regs->ddr_cdr1);
207 #ifdef CONFIG_DEEP_SLEEP
208 	if (is_warm_boot()) {
209 		ddr_out32(&ddr->sdram_cfg_2,
210 			  regs->ddr_sdram_cfg_2 & ~SDRAM_CFG2_D_INIT);
211 		ddr_out32(&ddr->init_addr, CONFIG_SYS_SDRAM_BASE);
212 		ddr_out32(&ddr->init_ext_addr, DDR_INIT_ADDR_EXT_UIA);
213 
214 		/* DRAM VRef will not be trained */
215 		ddr_out32(&ddr->ddr_cdr2,
216 			  regs->ddr_cdr2 & ~DDR_CDR2_VREF_TRAIN_EN);
217 	} else
218 #endif
219 	{
220 		ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2);
221 		ddr_out32(&ddr->init_addr, regs->ddr_init_addr);
222 		ddr_out32(&ddr->init_ext_addr, regs->ddr_init_ext_addr);
223 		ddr_out32(&ddr->ddr_cdr2, regs->ddr_cdr2);
224 	}
225 	ddr_out32(&ddr->err_disable, regs->err_disable);
226 	ddr_out32(&ddr->err_int_en, regs->err_int_en);
227 	for (i = 0; i < 32; i++) {
228 		if (regs->debug[i]) {
229 			debug("Write to debug_%d as %08x\n",
230 			      i+1, regs->debug[i]);
231 			ddr_out32(&ddr->debug[i], regs->debug[i]);
232 		}
233 	}
234 #ifdef CONFIG_SYS_FSL_ERRATUM_A008378
235 	/* Erratum applies when accumulated ECC is used, or DBI is enabled */
236 #define IS_ACC_ECC_EN(v) ((v) & 0x4)
237 #define IS_DBI(v) ((((v) >> 12) & 0x3) == 0x2)
238 	if (IS_ACC_ECC_EN(regs->ddr_sdram_cfg) ||
239 	    IS_DBI(regs->ddr_sdram_cfg_3))
240 		ddr_setbits32(ddr->debug[28], 0x9 << 20);
241 #endif
242 
243 #ifdef CONFIG_SYS_FSL_ERRATUM_A008511
244 	/* Part 1 of 2 */
245 	/* This erraum only applies to verion 5.2.0 */
246 	if (fsl_ddr_get_version(ctrl_num) == 0x50200) {
247 		/* Disable DRAM VRef training */
248 		ddr_out32(&ddr->ddr_cdr2,
249 			  regs->ddr_cdr2 & ~DDR_CDR2_VREF_TRAIN_EN);
250 		/* Disable deskew */
251 		ddr_out32(&ddr->debug[28], 0x400);
252 		/* Disable D_INIT */
253 		ddr_out32(&ddr->sdram_cfg_2,
254 			  regs->ddr_sdram_cfg_2 & ~SDRAM_CFG2_D_INIT);
255 		ddr_out32(&ddr->debug[25], 0x9000);
256 	}
257 #endif
258 	/*
259 	 * For RDIMMs, JEDEC spec requires clocks to be stable before reset is
260 	 * deasserted. Clocks start when any chip select is enabled and clock
261 	 * control register is set. Because all DDR components are connected to
262 	 * one reset signal, this needs to be done in two steps. Step 1 is to
263 	 * get the clocks started. Step 2 resumes after reset signal is
264 	 * deasserted.
265 	 */
266 	if (step == 1) {
267 		udelay(200);
268 		return;
269 	}
270 
271 step2:
272 	/* Set, but do not enable the memory */
273 	temp_sdram_cfg = regs->ddr_sdram_cfg;
274 	temp_sdram_cfg &= ~(SDRAM_CFG_MEM_EN);
275 	ddr_out32(&ddr->sdram_cfg, temp_sdram_cfg);
276 
277 	/*
278 	 * 500 painful micro-seconds must elapse between
279 	 * the DDR clock setup and the DDR config enable.
280 	 * DDR2 need 200 us, and DDR3 need 500 us from spec,
281 	 * we choose the max, that is 500 us for all of case.
282 	 */
283 	udelay(500);
284 	mb();
285 	isb();
286 
287 #ifdef CONFIG_DEEP_SLEEP
288 	if (is_warm_boot()) {
289 		/* enter self-refresh */
290 		temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg_2);
291 		temp_sdram_cfg |= SDRAM_CFG2_FRC_SR;
292 		ddr_out32(&ddr->sdram_cfg_2, temp_sdram_cfg);
293 		/* do board specific memory setup */
294 		board_mem_sleep_setup();
295 
296 		temp_sdram_cfg = (ddr_in32(&ddr->sdram_cfg) | SDRAM_CFG_BI);
297 	} else
298 #endif
299 		temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg) & ~SDRAM_CFG_BI;
300 	/* Let the controller go */
301 	ddr_out32(&ddr->sdram_cfg, temp_sdram_cfg | SDRAM_CFG_MEM_EN);
302 	mb();
303 	isb();
304 
305 #ifdef CONFIG_SYS_FSL_ERRATUM_A008511
306 	/* Part 2 of 2 */
307 	/* This erraum only applies to verion 5.2.0 */
308 	if (fsl_ddr_get_version(ctrl_num) == 0x50200) {
309 		/* Wait for idle */
310 		timeout = 200;
311 		while (!(ddr_in32(&ddr->debug[1]) & 0x2) &&
312 		       (timeout > 0)) {
313 			udelay(100);
314 			timeout--;
315 		}
316 		if (timeout <= 0) {
317 			printf("Controler %d timeout, debug_2 = %x\n",
318 			       ctrl_num, ddr_in32(&ddr->debug[1]));
319 		}
320 		/* Set VREF */
321 		for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
322 			if (!(regs->cs[i].config & SDRAM_CS_CONFIG_EN))
323 				continue;
324 
325 			mr6 = (regs->ddr_sdram_mode_10 >> 16)		|
326 				 MD_CNTL_MD_EN				|
327 				 MD_CNTL_CS_SEL(i)			|
328 				 MD_CNTL_MD_SEL(6)			|
329 				 0x00200000;
330 			temp32 = mr6 | 0xc0;
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 | 0xf0;
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 			temp32 = mr6 | 0x70;
341 			set_wait_for_bits_clear(&ddr->sdram_md_cntl,
342 						temp32, MD_CNTL_MD_EN);
343 			udelay(1);
344 			debug("MR6 = 0x%08x\n", temp32);
345 		}
346 		ddr_out32(&ddr->sdram_md_cntl, 0);
347 		ddr_out32(&ddr->debug[28], 0);		/* Enable deskew */
348 		ddr_out32(&ddr->debug[1], 0x400);	/* restart deskew */
349 		/* wait for idle */
350 		timeout = 200;
351 		while (!(ddr_in32(&ddr->debug[1]) & 0x2) &&
352 		       (timeout > 0)) {
353 			udelay(100);
354 			timeout--;
355 		}
356 		if (timeout <= 0) {
357 			printf("Controler %d timeout, debug_2 = %x\n",
358 			       ctrl_num, ddr_in32(&ddr->debug[1]));
359 		}
360 		/* Restore D_INIT */
361 		ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2);
362 	}
363 #endif /* CONFIG_SYS_FSL_ERRATUM_A008511 */
364 
365 	total_gb_size_per_controller = 0;
366 	for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
367 		if (!(regs->cs[i].config & 0x80000000))
368 			continue;
369 		total_gb_size_per_controller += 1 << (
370 			((regs->cs[i].config >> 14) & 0x3) + 2 +
371 			((regs->cs[i].config >> 8) & 0x7) + 12 +
372 			((regs->cs[i].config >> 4) & 0x3) + 0 +
373 			((regs->cs[i].config >> 0) & 0x7) + 8 +
374 			3 - ((regs->ddr_sdram_cfg >> 19) & 0x3) -
375 			26);			/* minus 26 (count of 64M) */
376 	}
377 	if (fsl_ddr_get_intl3r() & 0x80000000)	/* 3-way interleaving */
378 		total_gb_size_per_controller *= 3;
379 	else if (regs->cs[0].config & 0x20000000) /* 2-way interleaving */
380 		total_gb_size_per_controller <<= 1;
381 	/*
382 	 * total memory / bus width = transactions needed
383 	 * transactions needed / data rate = seconds
384 	 * to add plenty of buffer, double the time
385 	 * For example, 2GB on 666MT/s 64-bit bus takes about 402ms
386 	 * Let's wait for 800ms
387 	 */
388 	bus_width = 3 - ((ddr_in32(&ddr->sdram_cfg) & SDRAM_CFG_DBW_MASK)
389 			>> SDRAM_CFG_DBW_SHIFT);
390 	timeout = ((total_gb_size_per_controller << (6 - bus_width)) * 100 /
391 		(get_ddr_freq(ctrl_num) >> 20)) << 2;
392 	total_gb_size_per_controller >>= 4;	/* shift down to gb size */
393 	debug("total %d GB\n", total_gb_size_per_controller);
394 	debug("Need to wait up to %d * 10ms\n", timeout);
395 
396 	/* Poll DDR_SDRAM_CFG_2[D_INIT] bit until auto-data init is done.  */
397 	while ((ddr_in32(&ddr->sdram_cfg_2) & SDRAM_CFG2_D_INIT) &&
398 		(timeout >= 0)) {
399 		udelay(10000);		/* throttle polling rate */
400 		timeout--;
401 	}
402 
403 	if (timeout <= 0)
404 		printf("Waiting for D_INIT timeout. Memory may not work.\n");
405 #ifdef CONFIG_DEEP_SLEEP
406 	if (is_warm_boot()) {
407 		/* exit self-refresh */
408 		temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg_2);
409 		temp_sdram_cfg &= ~SDRAM_CFG2_FRC_SR;
410 		ddr_out32(&ddr->sdram_cfg_2, temp_sdram_cfg);
411 	}
412 #endif
413 
414 #ifdef CONFIG_FSL_DDR_BIST
415 #define BIST_PATTERN1	0xFFFFFFFF
416 #define BIST_PATTERN2	0x0
417 #define BIST_CR		0x80010000
418 #define BIST_CR_EN	0x80000000
419 #define BIST_CR_STAT	0x00000001
420 #define CTLR_INTLV_MASK	0x20000000
421 	/* Perform build-in test on memory. Three-way interleaving is not yet
422 	 * supported by this code. */
423 	if (getenv_f("ddr_bist", buffer, CONFIG_SYS_CBSIZE) >= 0) {
424 		puts("Running BIST test. This will take a while...");
425 		cs0_config = ddr_in32(&ddr->cs0_config);
426 		if (cs0_config & CTLR_INTLV_MASK) {
427 			cs0_bnds = ddr_in32(&cs0_bnds);
428 			cs1_bnds = ddr_in32(&cs1_bnds);
429 			cs2_bnds = ddr_in32(&cs2_bnds);
430 			cs3_bnds = ddr_in32(&cs3_bnds);
431 			/* set bnds to non-interleaving */
432 			ddr_out32(&cs0_bnds, (cs0_bnds & 0xfffefffe) >> 1);
433 			ddr_out32(&cs1_bnds, (cs1_bnds & 0xfffefffe) >> 1);
434 			ddr_out32(&cs2_bnds, (cs2_bnds & 0xfffefffe) >> 1);
435 			ddr_out32(&cs3_bnds, (cs3_bnds & 0xfffefffe) >> 1);
436 		}
437 		ddr_out32(&ddr->mtp1, BIST_PATTERN1);
438 		ddr_out32(&ddr->mtp2, BIST_PATTERN1);
439 		ddr_out32(&ddr->mtp3, BIST_PATTERN2);
440 		ddr_out32(&ddr->mtp4, BIST_PATTERN2);
441 		ddr_out32(&ddr->mtp5, BIST_PATTERN1);
442 		ddr_out32(&ddr->mtp6, BIST_PATTERN1);
443 		ddr_out32(&ddr->mtp7, BIST_PATTERN2);
444 		ddr_out32(&ddr->mtp8, BIST_PATTERN2);
445 		ddr_out32(&ddr->mtp9, BIST_PATTERN1);
446 		ddr_out32(&ddr->mtp10, BIST_PATTERN2);
447 		mtcr = BIST_CR;
448 		ddr_out32(&ddr->mtcr, mtcr);
449 		timeout = 100;
450 		while (timeout > 0 && (mtcr & BIST_CR_EN)) {
451 			mdelay(1000);
452 			timeout--;
453 			mtcr = ddr_in32(&ddr->mtcr);
454 		}
455 		if (timeout <= 0)
456 			puts("Timeout\n");
457 		else
458 			puts("Done\n");
459 		err_detect = ddr_in32(&ddr->err_detect);
460 		err_sbe = ddr_in32(&ddr->err_sbe);
461 		if (mtcr & BIST_CR_STAT) {
462 			printf("BIST test failed on controller %d.\n",
463 			       ctrl_num);
464 		}
465 		if (err_detect || (err_sbe & 0xffff)) {
466 			printf("ECC error detected on controller %d.\n",
467 			       ctrl_num);
468 		}
469 
470 		if (cs0_config & CTLR_INTLV_MASK) {
471 			/* restore bnds registers */
472 			ddr_out32(&cs0_bnds, cs0_bnds);
473 			ddr_out32(&cs1_bnds, cs1_bnds);
474 			ddr_out32(&cs2_bnds, cs2_bnds);
475 			ddr_out32(&cs3_bnds, cs3_bnds);
476 		}
477 	}
478 #endif
479 }
480