summaryrefslogtreecommitdiff
path: root/arch/mips/txx9/generic/setup_tx4939.c
blob: 360c388f4c821eeb7ae9c58e77d529cd128263c3 (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
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
/*
 * TX4939 setup routines
 * Based on linux/arch/mips/txx9/generic/setup_tx4938.c,
 *	    and RBTX49xx patch from CELF patch archive.
 *
 * 2003-2005 (c) MontaVista Software, Inc.
 * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/notifier.h>
#include <linux/device.h>
#include <linux/ethtool.h>
#include <linux/param.h>
#include <linux/ptrace.h>
#include <linux/mtd/physmap.h>
#include <linux/platform_device.h>
#include <linux/platform_data/txx9/ndfmc.h>
#include <asm/bootinfo.h>
#include <asm/reboot.h>
#include <asm/traps.h>
#include <asm/txx9irq.h>
#include <asm/txx9tmr.h>
#include <asm/txx9/generic.h>
#include <asm/txx9/dmac.h>
#include <asm/txx9/tx4939.h>

static void __init tx4939_wdr_init(void)
{
	/* report watchdog reset status */
	if (____raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_WDRST)
		pr_warn("Watchdog reset detected at 0x%lx\n",
			read_c0_errorepc());
	/* clear WatchDogReset (W1C) */
	tx4939_ccfg_set(TX4939_CCFG_WDRST);
	/* do reset on watchdog */
	tx4939_ccfg_set(TX4939_CCFG_WR);
}

void __init tx4939_wdt_init(void)
{
	txx9_wdt_init(TX4939_TMR_REG(2) & 0xfffffffffULL);
}

static void tx4939_machine_restart(char *command)
{
	local_irq_disable();
	pr_emerg("Rebooting (with %s watchdog reset)...\n",
		 (____raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_WDREXEN) ?
		 "external" : "internal");
	/* clear watchdog status */
	tx4939_ccfg_set(TX4939_CCFG_WDRST);	/* W1C */
	txx9_wdt_now(TX4939_TMR_REG(2) & 0xfffffffffULL);
	while (!(____raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_WDRST))
		;
	mdelay(10);
	if (____raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_WDREXEN) {
		pr_emerg("Rebooting (with internal watchdog reset)...\n");
		/* External WDRST failed.  Do internal watchdog reset */
		tx4939_ccfg_clear(TX4939_CCFG_WDREXEN);
	}
	/* fallback */
	(*_machine_halt)();
}

void show_registers(struct pt_regs *regs);
static int tx4939_be_handler(struct pt_regs *regs, int is_fixup)
{
	int data = regs->cp0_cause & 4;
	console_verbose();
	pr_err("%cBE exception at %#lx\n",
	       data ? 'D' : 'I', regs->cp0_epc);
	pr_err("ccfg:%llx, toea:%llx\n",
	       (unsigned long long)____raw_readq(&tx4939_ccfgptr->ccfg),
	       (unsigned long long)____raw_readq(&tx4939_ccfgptr->toea));
#ifdef CONFIG_PCI
	tx4927_report_pcic_status();
#endif
	show_registers(regs);
	panic("BusError!");
}
static void __init tx4939_be_init(void)
{
	board_be_handler = tx4939_be_handler;
}

static struct resource tx4939_sdram_resource[4];
static struct resource tx4939_sram_resource;
#define TX4939_SRAM_SIZE 0x800

void __init tx4939_add_memory_regions(void)
{
	int i;
	unsigned long start, size;
	u64 win;

	for (i = 0; i < 4; i++) {
		if (!((__u32)____raw_readq(&tx4939_ddrcptr->winen) & (1 << i)))
			continue;
		win = ____raw_readq(&tx4939_ddrcptr->win[i]);
		start = (unsigned long)(win >> 48);
		size = (((unsigned long)(win >> 32) & 0xffff) + 1) - start;
		add_memory_region(start << 20, size << 20, BOOT_MEM_RAM);
	}
}

void __init tx4939_setup(void)
{
	int i;
	__u32 divmode;
	__u64 pcfg;
	unsigned int cpuclk = 0;

	txx9_reg_res_init(TX4939_REV_PCODE(), TX4939_REG_BASE,
			  TX4939_REG_SIZE);
	set_c0_config(TX49_CONF_CWFON);

	/* SDRAMC,EBUSC are configured by PROM */
	for (i = 0; i < 4; i++) {
		if (!(TX4939_EBUSC_CR(i) & 0x8))
			continue;	/* disabled */
		txx9_ce_res[i].start = (unsigned long)TX4939_EBUSC_BA(i);
		txx9_ce_res[i].end =
			txx9_ce_res[i].start + TX4939_EBUSC_SIZE(i) - 1;
		request_resource(&iomem_resource, &txx9_ce_res[i]);
	}

	/* clocks */
	if (txx9_master_clock) {
		/* calculate cpu_clock from master_clock */
		divmode = (__u32)____raw_readq(&tx4939_ccfgptr->ccfg) &
			TX4939_CCFG_MULCLK_MASK;
		cpuclk = txx9_master_clock * 20 / 2;
		switch (divmode) {
		case TX4939_CCFG_MULCLK_8:
			cpuclk = cpuclk / 3 * 4 /* / 6 *  8 */; break;
		case TX4939_CCFG_MULCLK_9:
			cpuclk = cpuclk / 2 * 3 /* / 6 *  9 */; break;
		case TX4939_CCFG_MULCLK_10:
			cpuclk = cpuclk / 3 * 5 /* / 6 * 10 */; break;
		case TX4939_CCFG_MULCLK_11:
			cpuclk = cpuclk / 6 * 11; break;
		case TX4939_CCFG_MULCLK_12:
			cpuclk = cpuclk * 2 /* / 6 * 12 */; break;
		case TX4939_CCFG_MULCLK_13:
			cpuclk = cpuclk / 6 * 13; break;
		case TX4939_CCFG_MULCLK_14:
			cpuclk = cpuclk / 3 * 7 /* / 6 * 14 */; break;
		case TX4939_CCFG_MULCLK_15:
			cpuclk = cpuclk / 2 * 5 /* / 6 * 15 */; break;
		}
		txx9_cpu_clock = cpuclk;
	} else {
		if (txx9_cpu_clock == 0)
			txx9_cpu_clock = 400000000;	/* 400MHz */
		/* calculate master_clock from cpu_clock */
		cpuclk = txx9_cpu_clock;
		divmode = (__u32)____raw_readq(&tx4939_ccfgptr->ccfg) &
			TX4939_CCFG_MULCLK_MASK;
		switch (divmode) {
		case TX4939_CCFG_MULCLK_8:
			txx9_master_clock = cpuclk * 6 / 8; break;
		case TX4939_CCFG_MULCLK_9:
			txx9_master_clock = cpuclk * 6 / 9; break;
		case TX4939_CCFG_MULCLK_10:
			txx9_master_clock = cpuclk * 6 / 10; break;
		case TX4939_CCFG_MULCLK_11:
			txx9_master_clock = cpuclk * 6 / 11; break;
		case TX4939_CCFG_MULCLK_12:
			txx9_master_clock = cpuclk * 6 / 12; break;
		case TX4939_CCFG_MULCLK_13:
			txx9_master_clock = cpuclk * 6 / 13; break;
		case TX4939_CCFG_MULCLK_14:
			txx9_master_clock = cpuclk * 6 / 14; break;
		case TX4939_CCFG_MULCLK_15:
			txx9_master_clock = cpuclk * 6 / 15; break;
		}
		txx9_master_clock /= 10; /* * 2 / 20 */
	}
	/* calculate gbus_clock from cpu_clock */
	divmode = (__u32)____raw_readq(&tx4939_ccfgptr->ccfg) &
		TX4939_CCFG_YDIVMODE_MASK;
	txx9_gbus_clock = txx9_cpu_clock;
	switch (divmode) {
	case TX4939_CCFG_YDIVMODE_2:
		txx9_gbus_clock /= 2; break;
	case TX4939_CCFG_YDIVMODE_3:
		txx9_gbus_clock /= 3; break;
	case TX4939_CCFG_YDIVMODE_5:
		txx9_gbus_clock /= 5; break;
	case TX4939_CCFG_YDIVMODE_6:
		txx9_gbus_clock /= 6; break;
	}
	/* change default value to udelay/mdelay take reasonable time */
	loops_per_jiffy = txx9_cpu_clock / HZ / 2;

	/* CCFG */
	tx4939_wdr_init();
	/* clear BusErrorOnWrite flag (W1C) */
	tx4939_ccfg_set(TX4939_CCFG_WDRST | TX4939_CCFG_BEOW);
	/* enable Timeout BusError */
	if (txx9_ccfg_toeon)
		tx4939_ccfg_set(TX4939_CCFG_TOE);

	/* DMA selection */
	txx9_clear64(&tx4939_ccfgptr->pcfg, TX4939_PCFG_DMASEL_ALL);

	/* Use external clock for external arbiter */
	if (!(____raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_PCIARB))
		txx9_clear64(&tx4939_ccfgptr->pcfg, TX4939_PCFG_PCICLKEN_ALL);

	pr_info("%s -- %dMHz(M%dMHz,G%dMHz) CRIR:%08x CCFG:%llx PCFG:%llx\n",
		txx9_pcode_str,
		(cpuclk + 500000) / 1000000,
		(txx9_master_clock + 500000) / 1000000,
		(txx9_gbus_clock + 500000) / 1000000,
		(__u32)____raw_readq(&tx4939_ccfgptr->crir),
		____raw_readq(&tx4939_ccfgptr->ccfg),
		____raw_readq(&tx4939_ccfgptr->pcfg));

	pr_info("%s DDRC -- EN:%08x", txx9_pcode_str,
		(__u32)____raw_readq(&tx4939_ddrcptr->winen));
	for (i = 0; i < 4; i++) {
		__u64 win = ____raw_readq(&tx4939_ddrcptr->win[i]);
		if (!((__u32)____raw_readq(&tx4939_ddrcptr->winen) & (1 << i)))
			continue;	/* disabled */
		pr_cont(" #%d:%016llx", i, win);
		tx4939_sdram_resource[i].name = "DDR SDRAM";
		tx4939_sdram_resource[i].start =
			(unsigned long)(win >> 48) << 20;
		tx4939_sdram_resource[i].end =
			((((unsigned long)(win >> 32) & 0xffff) + 1) <<
			 20) - 1;
		tx4939_sdram_resource[i].flags = IORESOURCE_MEM;
		request_resource(&iomem_resource, &tx4939_sdram_resource[i]);
	}
	pr_cont("\n");

	/* SRAM */
	if (____raw_readq(&tx4939_sramcptr->cr) & 1) {
		unsigned int size = TX4939_SRAM_SIZE;
		tx4939_sram_resource.name = "SRAM";
		tx4939_sram_resource.start =
			(____raw_readq(&tx4939_sramcptr->cr) >> (39-11))
			& ~(size - 1);
		tx4939_sram_resource.end =
			tx4939_sram_resource.start + TX4939_SRAM_SIZE - 1;
		tx4939_sram_resource.flags = IORESOURCE_MEM;
		request_resource(&iomem_resource, &tx4939_sram_resource);
	}

	/* TMR */
	/* disable all timers */
	for (i = 0; i < TX4939_NR_TMR; i++)
		txx9_tmr_init(TX4939_TMR_REG(i) & 0xfffffffffULL);

	/* set PCIC1 reset (required to prevent hangup on BIST) */
	txx9_set64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_PCI1RST);
	pcfg = ____raw_readq(&tx4939_ccfgptr->pcfg);
	if (pcfg & (TX4939_PCFG_ET0MODE | TX4939_PCFG_ET1MODE)) {
		mdelay(1);	/* at least 128 cpu clock */
		/* clear PCIC1 reset */
		txx9_clear64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_PCI1RST);
	} else {
		pr_info("%s: stop PCIC1\n", txx9_pcode_str);
		/* stop PCIC1 */
		txx9_set64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_PCI1CKD);
	}
	if (!(pcfg & TX4939_PCFG_ET0MODE)) {
		pr_info("%s: stop ETH0\n", txx9_pcode_str);
		txx9_set64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_ETH0RST);
		txx9_set64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_ETH0CKD);
	}
	if (!(pcfg & TX4939_PCFG_ET1MODE)) {
		pr_info("%s: stop ETH1\n", txx9_pcode_str);
		txx9_set64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_ETH1RST);
		txx9_set64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_ETH1CKD);
	}

	_machine_restart = tx4939_machine_restart;
	board_be_init = tx4939_be_init;
}

void __init tx4939_time_init(unsigned int tmrnr)
{
	if (____raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_TINTDIS)
		txx9_clockevent_init(TX4939_TMR_REG(tmrnr) & 0xfffffffffULL,
				     TXX9_IRQ_BASE + TX4939_IR_TMR(tmrnr),
				     TXX9_IMCLK);
}

void __init tx4939_sio_init(unsigned int sclk, unsigned int cts_mask)
{
	int i;
	unsigned int ch_mask = 0;
	__u64 pcfg = __raw_readq(&tx4939_ccfgptr->pcfg);

	cts_mask |= ~1; /* only SIO0 have RTS/CTS */
	if ((pcfg & TX4939_PCFG_SIO2MODE_MASK) != TX4939_PCFG_SIO2MODE_SIO0)
		cts_mask |= 1 << 0; /* disable SIO0 RTS/CTS by PCFG setting */
	if ((pcfg & TX4939_PCFG_SIO2MODE_MASK) != TX4939_PCFG_SIO2MODE_SIO2)
		ch_mask |= 1 << 2; /* disable SIO2 by PCFG setting */
	if (pcfg & TX4939_PCFG_SIO3MODE)
		ch_mask |= 1 << 3; /* disable SIO3 by PCFG setting */
	for (i = 0; i < 4; i++) {
		if ((1 << i) & ch_mask)
			continue;
		txx9_sio_init(TX4939_SIO_REG(i) & 0xfffffffffULL,
			      TXX9_IRQ_BASE + TX4939_IR_SIO(i),
			      i, sclk, (1 << i) & cts_mask);
	}
}

#if IS_ENABLED(CONFIG_TC35815)
static u32 tx4939_get_eth_speed(struct net_device *dev)
{
	struct ethtool_link_ksettings cmd;

	if (__ethtool_get_link_ksettings(dev, &cmd))
		return 100;	/* default 100Mbps */

	return cmd.base.speed;
}

static int tx4939_netdev_event(struct notifier_block *this,
			       unsigned long event,
			       void *ptr)
{
	struct net_device *dev = netdev_notifier_info_to_dev(ptr);

	if (event == NETDEV_CHANGE && netif_carrier_ok(dev)) {
		__u64 bit = 0;
		if (dev->irq == TXX9_IRQ_BASE + TX4939_IR_ETH(0))
			bit = TX4939_PCFG_SPEED0;
		else if (dev->irq == TXX9_IRQ_BASE + TX4939_IR_ETH(1))
			bit = TX4939_PCFG_SPEED1;
		if (bit) {
			if (tx4939_get_eth_speed(dev) == 100)
				txx9_set64(&tx4939_ccfgptr->pcfg, bit);
			else
				txx9_clear64(&tx4939_ccfgptr->pcfg, bit);
		}
	}
	return NOTIFY_DONE;
}

static struct notifier_block tx4939_netdev_notifier = {
	.notifier_call = tx4939_netdev_event,
	.priority = 1,
};

void __init tx4939_ethaddr_init(unsigned char *addr0, unsigned char *addr1)
{
	u64 pcfg = __raw_readq(&tx4939_ccfgptr->pcfg);

	if (addr0 && (pcfg & TX4939_PCFG_ET0MODE))
		txx9_ethaddr_init(TXX9_IRQ_BASE + TX4939_IR_ETH(0), addr0);
	if (addr1 && (pcfg & TX4939_PCFG_ET1MODE))
		txx9_ethaddr_init(TXX9_IRQ_BASE + TX4939_IR_ETH(1), addr1);
	register_netdevice_notifier(&tx4939_netdev_notifier);
}
#else
void __init tx4939_ethaddr_init(unsigned char *addr0, unsigned char *addr1)
{
}
#endif

void __init tx4939_mtd_init(int ch)
{
	struct physmap_flash_data pdata = {
		.width = TX4939_EBUSC_WIDTH(ch) / 8,
	};
	unsigned long start = txx9_ce_res[ch].start;
	unsigned long size = txx9_ce_res[ch].end - start + 1;

	if (!(TX4939_EBUSC_CR(ch) & 0x8))
		return; /* disabled */
	txx9_physmap_flash_init(ch, start, size, &pdata);
}

#define TX4939_ATA_REG_PHYS(ch) (TX4939_ATA_REG(ch) & 0xfffffffffULL)
void __init tx4939_ata_init(void)
{
	static struct resource ata0_res[] = {
		{
			.start = TX4939_ATA_REG_PHYS(0),
			.end = TX4939_ATA_REG_PHYS(0) + 0x1000 - 1,
			.flags = IORESOURCE_MEM,
		}, {
			.start = TXX9_IRQ_BASE + TX4939_IR_ATA(0),
			.flags = IORESOURCE_IRQ,
		},
	};
	static struct resource ata1_res[] = {
		{
			.start = TX4939_ATA_REG_PHYS(1),
			.end = TX4939_ATA_REG_PHYS(1) + 0x1000 - 1,
			.flags = IORESOURCE_MEM,
		}, {
			.start = TXX9_IRQ_BASE + TX4939_IR_ATA(1),
			.flags = IORESOURCE_IRQ,
		},
	};
	static struct platform_device ata0_dev = {
		.name = "tx4939ide",
		.id = 0,
		.num_resources = ARRAY_SIZE(ata0_res),
		.resource = ata0_res,
	};
	static struct platform_device ata1_dev = {
		.name = "tx4939ide",
		.id = 1,
		.num_resources = ARRAY_SIZE(ata1_res),
		.resource = ata1_res,
	};
	__u64 pcfg = __raw_readq(&tx4939_ccfgptr->pcfg);

	if (pcfg & TX4939_PCFG_ATA0MODE)
		platform_device_register(&ata0_dev);
	if ((pcfg & (TX4939_PCFG_ATA1MODE |
		     TX4939_PCFG_ET1MODE |
		     TX4939_PCFG_ET0MODE)) == TX4939_PCFG_ATA1MODE)
		platform_device_register(&ata1_dev);
}

void __init tx4939_rtc_init(void)
{
	static struct resource res[] = {
		{
			.start = TX4939_RTC_REG & 0xfffffffffULL,
			.end = (TX4939_RTC_REG & 0xfffffffffULL) + 0x100 - 1,
			.flags = IORESOURCE_MEM,
		}, {
			.start = TXX9_IRQ_BASE + TX4939_IR_RTC,
			.flags = IORESOURCE_IRQ,
		},
	};
	static struct platform_device rtc_dev = {
		.name = "tx4939rtc",
		.id = -1,
		.num_resources = ARRAY_SIZE(res),
		.resource = res,
	};

	platform_device_register(&rtc_dev);
}

void __init tx4939_ndfmc_init(unsigned int hold, unsigned int spw,
			      unsigned char ch_mask, unsigned char wide_mask)
{
	struct txx9ndfmc_platform_data plat_data = {
		.shift = 1,
		.gbus_clock = txx9_gbus_clock,
		.hold = hold,
		.spw = spw,
		.flags = NDFMC_PLAT_FLAG_NO_RSTR | NDFMC_PLAT_FLAG_HOLDADD |
			 NDFMC_PLAT_FLAG_DUMMYWRITE,
		.ch_mask = ch_mask,
		.wide_mask = wide_mask,
	};
	txx9_ndfmc_init(TX4939_NDFMC_REG & 0xfffffffffULL, &plat_data);
}

void __init tx4939_dmac_init(int memcpy_chan0, int memcpy_chan1)
{
	struct txx9dmac_platform_data plat_data = {
		.have_64bit_regs = true,
	};
	int i;

	for (i = 0; i < 2; i++) {
		plat_data.memcpy_chan = i ? memcpy_chan1 : memcpy_chan0;
		txx9_dmac_init(i, TX4939_DMA_REG(i) & 0xfffffffffULL,
			       TXX9_IRQ_BASE + TX4939_IR_DMA(i, 0),
			       &plat_data);
	}
}

void __init tx4939_aclc_init(void)
{
	u64 pcfg = __raw_readq(&tx4939_ccfgptr->pcfg);

	if ((pcfg & TX4939_PCFG_I2SMODE_MASK) == TX4939_PCFG_I2SMODE_ACLC)
		txx9_aclc_init(TX4939_ACLC_REG & 0xfffffffffULL,
			       TXX9_IRQ_BASE + TX4939_IR_ACLC, 1, 0, 1);
}

void __init tx4939_sramc_init(void)
{
	if (tx4939_sram_resource.start)
		txx9_sramc_init(&tx4939_sram_resource);
}

void __init tx4939_rng_init(void)
{
	static struct resource res = {
		.start = TX4939_RNG_REG & 0xfffffffffULL,
		.end = (TX4939_RNG_REG & 0xfffffffffULL) + 0x30 - 1,
		.flags = IORESOURCE_MEM,
	};
	static struct platform_device pdev = {
		.name = "tx4939-rng",
		.id = -1,
		.num_resources = 1,
		.resource = &res,
	};

	platform_device_register(&pdev);
}

static void __init tx4939_stop_unused_modules(void)
{
	__u64 pcfg, rst = 0, ckd = 0;
	char buf[128];

	buf[0] = '\0';
	local_irq_disable();
	pcfg = ____raw_readq(&tx4939_ccfgptr->pcfg);
	if ((pcfg & TX4939_PCFG_I2SMODE_MASK) !=
	    TX4939_PCFG_I2SMODE_ACLC) {
		rst |= TX4939_CLKCTR_ACLRST;
		ckd |= TX4939_CLKCTR_ACLCKD;
		strcat(buf, " ACLC");
	}
	if ((pcfg & TX4939_PCFG_I2SMODE_MASK) !=
	    TX4939_PCFG_I2SMODE_I2S &&
	    (pcfg & TX4939_PCFG_I2SMODE_MASK) !=
	    TX4939_PCFG_I2SMODE_I2S_ALT) {
		rst |= TX4939_CLKCTR_I2SRST;
		ckd |= TX4939_CLKCTR_I2SCKD;
		strcat(buf, " I2S");
	}
	if (!(pcfg & TX4939_PCFG_ATA0MODE)) {
		rst |= TX4939_CLKCTR_ATA0RST;
		ckd |= TX4939_CLKCTR_ATA0CKD;
		strcat(buf, " ATA0");
	}
	if (!(pcfg & TX4939_PCFG_ATA1MODE)) {
		rst |= TX4939_CLKCTR_ATA1RST;
		ckd |= TX4939_CLKCTR_ATA1CKD;
		strcat(buf, " ATA1");
	}
	if (pcfg & TX4939_PCFG_SPIMODE) {
		rst |= TX4939_CLKCTR_SPIRST;
		ckd |= TX4939_CLKCTR_SPICKD;
		strcat(buf, " SPI");
	}
	if (!(pcfg & (TX4939_PCFG_VSSMODE | TX4939_PCFG_VPSMODE))) {
		rst |= TX4939_CLKCTR_VPCRST;
		ckd |= TX4939_CLKCTR_VPCCKD;
		strcat(buf, " VPC");
	}
	if ((pcfg & TX4939_PCFG_SIO2MODE_MASK) != TX4939_PCFG_SIO2MODE_SIO2) {
		rst |= TX4939_CLKCTR_SIO2RST;
		ckd |= TX4939_CLKCTR_SIO2CKD;
		strcat(buf, " SIO2");
	}
	if (pcfg & TX4939_PCFG_SIO3MODE) {
		rst |= TX4939_CLKCTR_SIO3RST;
		ckd |= TX4939_CLKCTR_SIO3CKD;
		strcat(buf, " SIO3");
	}
	if (rst | ckd) {
		txx9_set64(&tx4939_ccfgptr->clkctr, rst);
		txx9_set64(&tx4939_ccfgptr->clkctr, ckd);
	}
	local_irq_enable();
	if (buf[0])
		pr_info("%s: stop%s\n", txx9_pcode_str, buf);
}

static int __init tx4939_late_init(void)
{
	if (txx9_pcode != 0x4939)
		return -ENODEV;
	tx4939_stop_unused_modules();
	return 0;
}
late_initcall(tx4939_late_init);