summaryrefslogtreecommitdiff
path: root/arch/powerpc/cpu/mpc85xx/cpu.c
blob: bea8e10af7e19545c276d1371f8cdf809dc32b99 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
/*
 * Copyright 2004,2007-2010 Freescale Semiconductor, Inc.
 * (C) Copyright 2002, 2003 Motorola Inc.
 * Xianghua Xiao (X.Xiao@motorola.com)
 *
 * (C) Copyright 2000
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <config.h>
#include <common.h>
#include <watchdog.h>
#include <command.h>
#include <fsl_esdhc.h>
#include <asm/cache.h>
#include <asm/io.h>
#include <asm/mmu.h>
#include <asm/fsl_law.h>
#include <asm/fsl_lbc.h>
#include <post.h>
#include <asm/processor.h>
#include <asm/fsl_ddr_sdram.h>

DECLARE_GLOBAL_DATA_PTR;

int checkcpu (void)
{
	sys_info_t sysinfo;
	uint pvr, svr;
	uint fam;
	uint ver;
	uint major, minor;
	struct cpu_type *cpu;
	char buf1[32], buf2[32];
#if defined(CONFIG_DDR_CLK_FREQ) || defined(CONFIG_FSL_CORENET)
	volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
#endif /* CONFIG_FSL_CORENET */
#ifdef CONFIG_DDR_CLK_FREQ
	u32 ddr_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO)
		>> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT;
#else
#ifdef CONFIG_FSL_CORENET
	u32 ddr_sync = ((gur->rcwsr[5]) & FSL_CORENET_RCWSR5_DDR_SYNC)
		>> FSL_CORENET_RCWSR5_DDR_SYNC_SHIFT;
#else
	u32 ddr_ratio = 0;
#endif /* CONFIG_FSL_CORENET */
#endif /* CONFIG_DDR_CLK_FREQ */
	int i;

	svr = get_svr();
	major = SVR_MAJ(svr);
#ifdef CONFIG_MPC8536
	major &= 0x7; /* the msb of this nibble is a mfg code */
#endif
	minor = SVR_MIN(svr);

	if (cpu_numcores() > 1) {
#ifndef CONFIG_MP
		puts("Unicore software on multiprocessor system!!\n"
		     "To enable mutlticore build define CONFIG_MP\n");
#endif
		volatile ccsr_pic_t *pic = (void *)(CONFIG_SYS_MPC8xxx_PIC_ADDR);
		printf("CPU%d:  ", pic->whoami);
	} else {
		puts("CPU:   ");
	}

	cpu = gd->cpu;

	puts(cpu->name);
	if (IS_E_PROCESSOR(svr))
		puts("E");

	printf(", Version: %d.%d, (0x%08x)\n", major, minor, svr);

	pvr = get_pvr();
	fam = PVR_FAM(pvr);
	ver = PVR_VER(pvr);
	major = PVR_MAJ(pvr);
	minor = PVR_MIN(pvr);

	printf("Core:  ");
	if (PVR_FAM(PVR_85xx)) {
		switch(PVR_MEM(pvr)) {
		case 0x1:
		case 0x2:
			puts("E500");
			break;
		case 0x3:
			puts("E500MC");
			break;
		case 0x4:
			puts("E5500");
			break;
		default:
			puts("Unknown");
			break;
		}
	} else {
		puts("Unknown");
	}

	printf(", Version: %d.%d, (0x%08x)\n", major, minor, pvr);

	get_sys_info(&sysinfo);

	puts("Clock Configuration:");
	for (i = 0; i < cpu_numcores(); i++) {
		if (!(i & 3))
			printf ("\n       ");
		printf("CPU%d:%-4s MHz, ",
				i,strmhz(buf1, sysinfo.freqProcessor[i]));
	}
	printf("\n       CCB:%-4s MHz,\n", strmhz(buf1, sysinfo.freqSystemBus));

#ifdef CONFIG_FSL_CORENET
	if (ddr_sync == 1) {
		printf("       DDR:%-4s MHz (%s MT/s data rate) "
			"(Synchronous), ",
			strmhz(buf1, sysinfo.freqDDRBus/2),
			strmhz(buf2, sysinfo.freqDDRBus));
	} else {
		printf("       DDR:%-4s MHz (%s MT/s data rate) "
			"(Asynchronous), ",
			strmhz(buf1, sysinfo.freqDDRBus/2),
			strmhz(buf2, sysinfo.freqDDRBus));
	}
#else
	switch (ddr_ratio) {
	case 0x0:
		printf("       DDR:%-4s MHz (%s MT/s data rate), ",
			strmhz(buf1, sysinfo.freqDDRBus/2),
			strmhz(buf2, sysinfo.freqDDRBus));
		break;
	case 0x7:
		printf("       DDR:%-4s MHz (%s MT/s data rate) "
			"(Synchronous), ",
			strmhz(buf1, sysinfo.freqDDRBus/2),
			strmhz(buf2, sysinfo.freqDDRBus));
		break;
	default:
		printf("       DDR:%-4s MHz (%s MT/s data rate) "
			"(Asynchronous), ",
			strmhz(buf1, sysinfo.freqDDRBus/2),
			strmhz(buf2, sysinfo.freqDDRBus));
		break;
	}
#endif

	if (sysinfo.freqLocalBus > LCRR_CLKDIV) {
		printf("LBC:%-4s MHz\n", strmhz(buf1, sysinfo.freqLocalBus));
	} else {
		printf("LBC: unknown (LCRR[CLKDIV] = 0x%02lx)\n",
		       sysinfo.freqLocalBus);
	}

#ifdef CONFIG_CPM2
	printf("CPM:   %s MHz\n", strmhz(buf1, sysinfo.freqSystemBus));
#endif

#ifdef CONFIG_QE
	printf("       QE:%-4s MHz\n", strmhz(buf1, sysinfo.freqQE));
#endif

#ifdef CONFIG_SYS_DPAA_FMAN
	for (i = 0; i < CONFIG_SYS_NUM_FMAN; i++) {
		printf("       FMAN%d: %s MHz\n", i + 1,
			strmhz(buf1, sysinfo.freqFMan[i]));
	}
#endif

#ifdef CONFIG_SYS_DPAA_PME
	printf("       PME:   %s MHz\n", strmhz(buf1, sysinfo.freqPME));
#endif

	puts("L1:    D-cache 32 kB enabled\n       I-cache 32 kB enabled\n");

	return 0;
}


/* ------------------------------------------------------------------------- */

int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
/* Everything after the first generation of PQ3 parts has RSTCR */
#if defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || \
    defined(CONFIG_MPC8555) || defined(CONFIG_MPC8560)
	unsigned long val, msr;

	/*
	 * Initiate hard reset in debug control register DBCR0
	 * Make sure MSR[DE] = 1.  This only resets the core.
	 */
	msr = mfmsr ();
	msr |= MSR_DE;
	mtmsr (msr);

	val = mfspr(DBCR0);
	val |= 0x70000000;
	mtspr(DBCR0,val);
#else
	volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
	out_be32(&gur->rstcr, 0x2);	/* HRESET_REQ */
	udelay(100);
#endif

	return 1;
}


/*
 * Get timebase clock frequency
 */
unsigned long get_tbclk (void)
{
#ifdef CONFIG_FSL_CORENET
	return (gd->bus_clk + 8) / 16;
#else
	return (gd->bus_clk + 4UL)/8UL;
#endif
}


#if defined(CONFIG_WATCHDOG)
void
watchdog_reset(void)
{
	int re_enable = disable_interrupts();
	reset_85xx_watchdog();
	if (re_enable) enable_interrupts();
}

void
reset_85xx_watchdog(void)
{
	/*
	 * Clear TSR(WIS) bit by writing 1
	 */
	unsigned long val;
	val = mfspr(SPRN_TSR);
	val |= TSR_WIS;
	mtspr(SPRN_TSR, val);
}
#endif	/* CONFIG_WATCHDOG */

/*
 * Initializes on-chip MMC controllers.
 * to override, implement board_mmc_init()
 */
int cpu_mmc_init(bd_t *bis)
{
#ifdef CONFIG_FSL_ESDHC
	return fsl_esdhc_mmc_init(bis);
#else
	return 0;
#endif
}

/*
 * Print out the state of various machine registers.
 * Currently prints out LAWs, BR0/OR0, and TLBs
 */
void mpc85xx_reginfo(void)
{
	print_tlbcam();
	print_laws();
	print_lbc_regs();
}

/* Common ddr init for non-corenet fsl 85xx platforms */
#ifndef CONFIG_FSL_CORENET
phys_size_t initdram(int board_type)
{
	phys_size_t dram_size = 0;

#if defined(CONFIG_DDR_DLL)
	{
		ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
		unsigned int x = 10;
		unsigned int i;

		/*
		 * Work around to stabilize DDR DLL
		 */
		out_be32(&gur->ddrdllcr, 0x81000000);
		asm("sync;isync;msync");
		udelay(200);
		while (in_be32(&gur->ddrdllcr) != 0x81000100) {
			setbits_be32(&gur->devdisr, 0x00010000);
			for (i = 0; i < x; i++)
				;
			clrbits_be32(&gur->devdisr, 0x00010000);
			x++;
		}
	}
#endif

#if defined(CONFIG_SPD_EEPROM) || defined(CONFIG_DDR_SPD)
	dram_size = fsl_ddr_sdram();
#else
	dram_size = fixed_sdram();
#endif
	dram_size = setup_ddr_tlbs(dram_size / 0x100000);
	dram_size *= 0x100000;

#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
	/*
	 * Initialize and enable DDR ECC.
	 */
	ddr_enable_ecc(dram_size);
#endif

	/* Some boards also have sdram on the lbc */
	sdram_init();

	puts("DDR: ");
	return dram_size;
}
#endif

#if CONFIG_POST & CONFIG_SYS_POST_MEMORY

/* Board-specific functions defined in each board's ddr.c */
void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd,
	unsigned int ctrl_num);
void read_tlbcam_entry(int idx, u32 *valid, u32 *tsize, unsigned long *epn,
		       phys_addr_t *rpn);
unsigned int
	setup_ddr_tlbs_phys(phys_addr_t p_addr, unsigned int memsize_in_meg);

static void dump_spd_ddr_reg(void)
{
	int i, j, k, m;
	u8 *p_8;
	u32 *p_32;
	ccsr_ddr_t *ddr[CONFIG_NUM_DDR_CONTROLLERS];
	generic_spd_eeprom_t
		spd[CONFIG_NUM_DDR_CONTROLLERS][CONFIG_DIMM_SLOTS_PER_CTLR];

	for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++)
		fsl_ddr_get_spd(spd[i], i);

	puts("SPD data of all dimms (zero vaule is omitted)...\n");
	puts("Byte (hex)  ");
	k = 1;
	for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
		for (j = 0; j < CONFIG_DIMM_SLOTS_PER_CTLR; j++)
			printf("Dimm%d ", k++);
	}
	puts("\n");
	for (k = 0; k < sizeof(generic_spd_eeprom_t); k++) {
		m = 0;
		printf("%3d (0x%02x)  ", k, k);
		for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
			for (j = 0; j < CONFIG_DIMM_SLOTS_PER_CTLR; j++) {
				p_8 = (u8 *) &spd[i][j];
				if (p_8[k]) {
					printf("0x%02x  ", p_8[k]);
					m++;
				} else
					puts("      ");
			}
		}
		if (m)
			puts("\n");
		else
			puts("\r");
	}

	for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
		switch (i) {
		case 0:
			ddr[i] = (void *)CONFIG_SYS_MPC85xx_DDR_ADDR;
			break;
#ifdef CONFIG_SYS_MPC85xx_DDR2_ADDR
		case 1:
			ddr[i] = (void *)CONFIG_SYS_MPC85xx_DDR2_ADDR;
			break;
#endif
		default:
			printf("%s unexpected controller number = %u\n",
				__func__, i);
			return;
		}
	}
	printf("DDR registers dump for all controllers "
		"(zero vaule is omitted)...\n");
	puts("Offset (hex)   ");
	for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++)
		printf("     Base + 0x%04x", (u32)ddr[i] & 0xFFFF);
	puts("\n");
	for (k = 0; k < sizeof(ccsr_ddr_t)/4; k++) {
		m = 0;
		printf("%6d (0x%04x)", k * 4, k * 4);
		for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
			p_32 = (u32 *) ddr[i];
			if (p_32[k]) {
				printf("        0x%08x", p_32[k]);
				m++;
			} else
				puts("                  ");
		}
		if (m)
			puts("\n");
		else
			puts("\r");
	}
	puts("\n");
}

/* invalid the TLBs for DDR and setup new ones to cover p_addr */
static int reset_tlb(phys_addr_t p_addr, u32 size, phys_addr_t *phys_offset)
{
	u32 vstart = CONFIG_SYS_DDR_SDRAM_BASE;
	unsigned long epn;
	u32 tsize, valid, ptr;
	phys_addr_t rpn = 0;
	int ddr_esel;

	ptr = vstart;

	while (ptr < (vstart + size)) {
		ddr_esel = find_tlb_idx((void *)ptr, 1);
		if (ddr_esel != -1) {
			read_tlbcam_entry(ddr_esel, &valid, &tsize, &epn, &rpn);
			disable_tlb(ddr_esel);
		}
		ptr += TSIZE_TO_BYTES(tsize);
	}

	/* Setup new tlb to cover the physical address */
	setup_ddr_tlbs_phys(p_addr, size>>20);

	ptr = vstart;
	ddr_esel = find_tlb_idx((void *)ptr, 1);
	if (ddr_esel != -1) {
		read_tlbcam_entry(ddr_esel, &valid, &tsize, &epn, phys_offset);
	} else {
		printf("TLB error in function %s\n", __func__);
		return -1;
	}

	return 0;
}

/*
 * slide the testing window up to test another area
 * for 32_bit system, the maximum testable memory is limited to
 * CONFIG_MAX_MEM_MAPPED
 */
int arch_memory_test_advance(u32 *vstart, u32 *size, phys_addr_t *phys_offset)
{
	phys_addr_t test_cap, p_addr;
	phys_size_t p_size = min(gd->ram_size, CONFIG_MAX_MEM_MAPPED);

#if !defined(CONFIG_PHYS_64BIT) || \
    !defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS) || \
	(CONFIG_SYS_INIT_RAM_ADDR_PHYS < 0x100000000ull)
		test_cap = p_size;
#else
		test_cap = gd->ram_size;
#endif
	p_addr = (*vstart) + (*size) + (*phys_offset);
	if (p_addr < test_cap - 1) {
		p_size = min(test_cap - p_addr, CONFIG_MAX_MEM_MAPPED);
		if (reset_tlb(p_addr, p_size, phys_offset) == -1)
			return -1;
		*vstart = CONFIG_SYS_DDR_SDRAM_BASE;
		*size = (u32) p_size;
		printf("Testing 0x%08llx - 0x%08llx\n",
			(u64)(*vstart) + (*phys_offset),
			(u64)(*vstart) + (*phys_offset) + (*size) - 1);
	} else
		return 1;

	return 0;
}

/* initialization for testing area */
int arch_memory_test_prepare(u32 *vstart, u32 *size, phys_addr_t *phys_offset)
{
	phys_size_t p_size = min(gd->ram_size, CONFIG_MAX_MEM_MAPPED);

	*vstart = CONFIG_SYS_DDR_SDRAM_BASE;
	*size = (u32) p_size;	/* CONFIG_MAX_MEM_MAPPED < 4G */
	*phys_offset = 0;

#if !defined(CONFIG_PHYS_64BIT) || \
    !defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS) || \
	(CONFIG_SYS_INIT_RAM_ADDR_PHYS < 0x100000000ull)
		if (gd->ram_size > CONFIG_MAX_MEM_MAPPED) {
			puts("Cannot test more than ");
			print_size(CONFIG_MAX_MEM_MAPPED,
				" without proper 36BIT support.\n");
		}
#endif
	printf("Testing 0x%08llx - 0x%08llx\n",
		(u64)(*vstart) + (*phys_offset),
		(u64)(*vstart) + (*phys_offset) + (*size) - 1);

	return 0;
}

/* invalid TLBs for DDR and remap as normal after testing */
int arch_memory_test_cleanup(u32 *vstart, u32 *size, phys_addr_t *phys_offset)
{
	unsigned long epn;
	u32 tsize, valid, ptr;
	phys_addr_t rpn = 0;
	int ddr_esel;

	/* disable the TLBs for this testing */
	ptr = *vstart;

	while (ptr < (*vstart) + (*size)) {
		ddr_esel = find_tlb_idx((void *)ptr, 1);
		if (ddr_esel != -1) {
			read_tlbcam_entry(ddr_esel, &valid, &tsize, &epn, &rpn);
			disable_tlb(ddr_esel);
		}
		ptr += TSIZE_TO_BYTES(tsize);
	}

	puts("Remap DDR ");
	setup_ddr_tlbs(gd->ram_size>>20);
	puts("\n");

	return 0;
}

void arch_memory_failure_handle(void)
{
	dump_spd_ddr_reg();
}
#endif