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nilfs2: fix oopses with doubly mounted snapshots
[linux-2.6/mini2440.git] / arch / arm / mach-mv78xx0 / common.c
blob1b22e4af8791ff16cd238c7852d68a9aa4f12740
1 /*
2 * arch/arm/mach-mv78xx0/common.c
3 *
4 * Core functions for Marvell MV78xx0 SoCs
5 *
6 * This file is licensed under the terms of the GNU General Public
7 * License version 2. This program is licensed "as is" without any
8 * warranty of any kind, whether express or implied.
9 */
10
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/platform_device.h>
14 #include <linux/serial_8250.h>
15 #include <linux/mbus.h>
16 #include <linux/mv643xx_eth.h>
17 #include <linux/mv643xx_i2c.h>
18 #include <linux/ata_platform.h>
19 #include <linux/ethtool.h>
20 #include <asm/mach/map.h>
21 #include <asm/mach/time.h>
22 #include <mach/mv78xx0.h>
23 #include <mach/bridge-regs.h>
24 #include <plat/cache-feroceon-l2.h>
25 #include <plat/ehci-orion.h>
26 #include <plat/orion_nand.h>
27 #include <plat/time.h>
28 #include "common.h"
29
30
31 /*****************************************************************************
32 * Common bits
33 ****************************************************************************/
34 int mv78xx0_core_index(void)
35 {
36 u32 extra;
37
38 /*
39 * Read Extra Features register.
40 */
41 __asm__("mrc p15, 1, %0, c15, c1, 0" : "=r" (extra));
42
43 return !!(extra & 0x00004000);
44 }
45
46 static int get_hclk(void)
47 {
48 int hclk;
49
50 /*
51 * HCLK tick rate is configured by DEV_D[7:5] pins.
52 */
53 switch ((readl(SAMPLE_AT_RESET_LOW) >> 5) & 7) {
54 case 0:
55 hclk = 166666667;
56 break;
57 case 1:
58 hclk = 200000000;
59 break;
60 case 2:
61 hclk = 266666667;
62 break;
63 case 3:
64 hclk = 333333333;
65 break;
66 case 4:
67 hclk = 400000000;
68 break;
69 default:
70 panic("unknown HCLK PLL setting: %.8x\n",
71 readl(SAMPLE_AT_RESET_LOW));
72 }
73
74 return hclk;
75 }
76
77 static void get_pclk_l2clk(int hclk, int core_index, int *pclk, int *l2clk)
78 {
79 u32 cfg;
80
81 /*
82 * Core #0 PCLK/L2CLK is configured by bits [13:8], core #1
83 * PCLK/L2CLK by bits [19:14].
84 */
85 if (core_index == 0) {
86 cfg = (readl(SAMPLE_AT_RESET_LOW) >> 8) & 0x3f;
87 } else {
88 cfg = (readl(SAMPLE_AT_RESET_LOW) >> 14) & 0x3f;
89 }
90
91 /*
92 * Bits [11:8] ([17:14] for core #1) configure the PCLK:HCLK
93 * ratio (1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6).
94 */
95 *pclk = ((u64)hclk * (2 + (cfg & 0xf))) >> 1;
96
97 /*
98 * Bits [13:12] ([19:18] for core #1) configure the PCLK:L2CLK
99 * ratio (1, 2, 3).
100 */
101 *l2clk = *pclk / (((cfg >> 4) & 3) + 1);
102 }
103
104 static int get_tclk(void)
105 {
106 int tclk;
107
108 /*
109 * TCLK tick rate is configured by DEV_A[2:0] strap pins.
110 */
111 switch ((readl(SAMPLE_AT_RESET_HIGH) >> 6) & 7) {
112 case 1:
113 tclk = 166666667;
114 break;
115 case 3:
116 tclk = 200000000;
117 break;
118 default:
119 panic("unknown TCLK PLL setting: %.8x\n",
120 readl(SAMPLE_AT_RESET_HIGH));
121 }
122
123 return tclk;
124 }
125
126
127 /*****************************************************************************
128 * I/O Address Mapping
129 ****************************************************************************/
130 static struct map_desc mv78xx0_io_desc[] __initdata = {
131 {
132 .virtual = MV78XX0_CORE_REGS_VIRT_BASE,
133 .pfn = 0,
134 .length = MV78XX0_CORE_REGS_SIZE,
135 .type = MT_DEVICE,
136 }, {
137 .virtual = MV78XX0_PCIE_IO_VIRT_BASE(0),
138 .pfn = __phys_to_pfn(MV78XX0_PCIE_IO_PHYS_BASE(0)),
139 .length = MV78XX0_PCIE_IO_SIZE * 8,
140 .type = MT_DEVICE,
141 }, {
142 .virtual = MV78XX0_REGS_VIRT_BASE,
143 .pfn = __phys_to_pfn(MV78XX0_REGS_PHYS_BASE),
144 .length = MV78XX0_REGS_SIZE,
145 .type = MT_DEVICE,
146 },
147 };
148
149 void __init mv78xx0_map_io(void)
150 {
151 unsigned long phys;
152
153 /*
154 * Map the right set of per-core registers depending on
155 * which core we are running on.
156 */
157 if (mv78xx0_core_index() == 0) {
158 phys = MV78XX0_CORE0_REGS_PHYS_BASE;
159 } else {
160 phys = MV78XX0_CORE1_REGS_PHYS_BASE;
161 }
162 mv78xx0_io_desc[0].pfn = __phys_to_pfn(phys);
163
164 iotable_init(mv78xx0_io_desc, ARRAY_SIZE(mv78xx0_io_desc));
165 }
166
167
168 /*****************************************************************************
169 * EHCI
170 ****************************************************************************/
171 static struct orion_ehci_data mv78xx0_ehci_data = {
172 .dram = &mv78xx0_mbus_dram_info,
173 .phy_version = EHCI_PHY_NA,
174 };
175
176 static u64 ehci_dmamask = 0xffffffffUL;
177
178
179 /*****************************************************************************
180 * EHCI0
181 ****************************************************************************/
182 static struct resource mv78xx0_ehci0_resources[] = {
183 {
184 .start = USB0_PHYS_BASE,
185 .end = USB0_PHYS_BASE + 0x0fff,
186 .flags = IORESOURCE_MEM,
187 }, {
188 .start = IRQ_MV78XX0_USB_0,
189 .end = IRQ_MV78XX0_USB_0,
190 .flags = IORESOURCE_IRQ,
191 },
192 };
193
194 static struct platform_device mv78xx0_ehci0 = {
195 .name = "orion-ehci",
196 .id = 0,
197 .dev = {
198 .dma_mask = &ehci_dmamask,
199 .coherent_dma_mask = 0xffffffff,
200 .platform_data = &mv78xx0_ehci_data,
201 },
202 .resource = mv78xx0_ehci0_resources,
203 .num_resources = ARRAY_SIZE(mv78xx0_ehci0_resources),
204 };
205
206 void __init mv78xx0_ehci0_init(void)
207 {
208 platform_device_register(&mv78xx0_ehci0);
209 }
210
211
212 /*****************************************************************************
213 * EHCI1
214 ****************************************************************************/
215 static struct resource mv78xx0_ehci1_resources[] = {
216 {
217 .start = USB1_PHYS_BASE,
218 .end = USB1_PHYS_BASE + 0x0fff,
219 .flags = IORESOURCE_MEM,
220 }, {
221 .start = IRQ_MV78XX0_USB_1,
222 .end = IRQ_MV78XX0_USB_1,
223 .flags = IORESOURCE_IRQ,
224 },
225 };
226
227 static struct platform_device mv78xx0_ehci1 = {
228 .name = "orion-ehci",
229 .id = 1,
230 .dev = {
231 .dma_mask = &ehci_dmamask,
232 .coherent_dma_mask = 0xffffffff,
233 .platform_data = &mv78xx0_ehci_data,
234 },
235 .resource = mv78xx0_ehci1_resources,
236 .num_resources = ARRAY_SIZE(mv78xx0_ehci1_resources),
237 };
238
239 void __init mv78xx0_ehci1_init(void)
240 {
241 platform_device_register(&mv78xx0_ehci1);
242 }
243
244
245 /*****************************************************************************
246 * EHCI2
247 ****************************************************************************/
248 static struct resource mv78xx0_ehci2_resources[] = {
249 {
250 .start = USB2_PHYS_BASE,
251 .end = USB2_PHYS_BASE + 0x0fff,
252 .flags = IORESOURCE_MEM,
253 }, {
254 .start = IRQ_MV78XX0_USB_2,
255 .end = IRQ_MV78XX0_USB_2,
256 .flags = IORESOURCE_IRQ,
257 },
258 };
259
260 static struct platform_device mv78xx0_ehci2 = {
261 .name = "orion-ehci",
262 .id = 2,
263 .dev = {
264 .dma_mask = &ehci_dmamask,
265 .coherent_dma_mask = 0xffffffff,
266 .platform_data = &mv78xx0_ehci_data,
267 },
268 .resource = mv78xx0_ehci2_resources,
269 .num_resources = ARRAY_SIZE(mv78xx0_ehci2_resources),
270 };
271
272 void __init mv78xx0_ehci2_init(void)
273 {
274 platform_device_register(&mv78xx0_ehci2);
275 }
276
277
278 /*****************************************************************************
279 * GE00
280 ****************************************************************************/
281 struct mv643xx_eth_shared_platform_data mv78xx0_ge00_shared_data = {
282 .t_clk = 0,
283 .dram = &mv78xx0_mbus_dram_info,
284 };
285
286 static struct resource mv78xx0_ge00_shared_resources[] = {
287 {
288 .name = "ge00 base",
289 .start = GE00_PHYS_BASE + 0x2000,
290 .end = GE00_PHYS_BASE + 0x3fff,
291 .flags = IORESOURCE_MEM,
292 }, {
293 .name = "ge err irq",
294 .start = IRQ_MV78XX0_GE_ERR,
295 .end = IRQ_MV78XX0_GE_ERR,
296 .flags = IORESOURCE_IRQ,
297 },
298 };
299
300 static struct platform_device mv78xx0_ge00_shared = {
301 .name = MV643XX_ETH_SHARED_NAME,
302 .id = 0,
303 .dev = {
304 .platform_data = &mv78xx0_ge00_shared_data,
305 },
306 .num_resources = ARRAY_SIZE(mv78xx0_ge00_shared_resources),
307 .resource = mv78xx0_ge00_shared_resources,
308 };
309
310 static struct resource mv78xx0_ge00_resources[] = {
311 {
312 .name = "ge00 irq",
313 .start = IRQ_MV78XX0_GE00_SUM,
314 .end = IRQ_MV78XX0_GE00_SUM,
315 .flags = IORESOURCE_IRQ,
316 },
317 };
318
319 static struct platform_device mv78xx0_ge00 = {
320 .name = MV643XX_ETH_NAME,
321 .id = 0,
322 .num_resources = 1,
323 .resource = mv78xx0_ge00_resources,
324 .dev = {
325 .coherent_dma_mask = 0xffffffff,
326 },
327 };
328
329 void __init mv78xx0_ge00_init(struct mv643xx_eth_platform_data *eth_data)
330 {
331 eth_data->shared = &mv78xx0_ge00_shared;
332 mv78xx0_ge00.dev.platform_data = eth_data;
333
334 platform_device_register(&mv78xx0_ge00_shared);
335 platform_device_register(&mv78xx0_ge00);
336 }
337
338
339 /*****************************************************************************
340 * GE01
341 ****************************************************************************/
342 struct mv643xx_eth_shared_platform_data mv78xx0_ge01_shared_data = {
343 .t_clk = 0,
344 .dram = &mv78xx0_mbus_dram_info,
345 .shared_smi = &mv78xx0_ge00_shared,
346 };
347
348 static struct resource mv78xx0_ge01_shared_resources[] = {
349 {
350 .name = "ge01 base",
351 .start = GE01_PHYS_BASE + 0x2000,
352 .end = GE01_PHYS_BASE + 0x3fff,
353 .flags = IORESOURCE_MEM,
354 },
355 };
356
357 static struct platform_device mv78xx0_ge01_shared = {
358 .name = MV643XX_ETH_SHARED_NAME,
359 .id = 1,
360 .dev = {
361 .platform_data = &mv78xx0_ge01_shared_data,
362 },
363 .num_resources = 1,
364 .resource = mv78xx0_ge01_shared_resources,
365 };
366
367 static struct resource mv78xx0_ge01_resources[] = {
368 {
369 .name = "ge01 irq",
370 .start = IRQ_MV78XX0_GE01_SUM,
371 .end = IRQ_MV78XX0_GE01_SUM,
372 .flags = IORESOURCE_IRQ,
373 },
374 };
375
376 static struct platform_device mv78xx0_ge01 = {
377 .name = MV643XX_ETH_NAME,
378 .id = 1,
379 .num_resources = 1,
380 .resource = mv78xx0_ge01_resources,
381 .dev = {
382 .coherent_dma_mask = 0xffffffff,
383 },
384 };
385
386 void __init mv78xx0_ge01_init(struct mv643xx_eth_platform_data *eth_data)
387 {
388 eth_data->shared = &mv78xx0_ge01_shared;
389 mv78xx0_ge01.dev.platform_data = eth_data;
390
391 platform_device_register(&mv78xx0_ge01_shared);
392 platform_device_register(&mv78xx0_ge01);
393 }
394
395
396 /*****************************************************************************
397 * GE10
398 ****************************************************************************/
399 struct mv643xx_eth_shared_platform_data mv78xx0_ge10_shared_data = {
400 .t_clk = 0,
401 .dram = &mv78xx0_mbus_dram_info,
402 .shared_smi = &mv78xx0_ge00_shared,
403 };
404
405 static struct resource mv78xx0_ge10_shared_resources[] = {
406 {
407 .name = "ge10 base",
408 .start = GE10_PHYS_BASE + 0x2000,
409 .end = GE10_PHYS_BASE + 0x3fff,
410 .flags = IORESOURCE_MEM,
411 },
412 };
413
414 static struct platform_device mv78xx0_ge10_shared = {
415 .name = MV643XX_ETH_SHARED_NAME,
416 .id = 2,
417 .dev = {
418 .platform_data = &mv78xx0_ge10_shared_data,
419 },
420 .num_resources = 1,
421 .resource = mv78xx0_ge10_shared_resources,
422 };
423
424 static struct resource mv78xx0_ge10_resources[] = {
425 {
426 .name = "ge10 irq",
427 .start = IRQ_MV78XX0_GE10_SUM,
428 .end = IRQ_MV78XX0_GE10_SUM,
429 .flags = IORESOURCE_IRQ,
430 },
431 };
432
433 static struct platform_device mv78xx0_ge10 = {
434 .name = MV643XX_ETH_NAME,
435 .id = 2,
436 .num_resources = 1,
437 .resource = mv78xx0_ge10_resources,
438 .dev = {
439 .coherent_dma_mask = 0xffffffff,
440 },
441 };
442
443 void __init mv78xx0_ge10_init(struct mv643xx_eth_platform_data *eth_data)
444 {
445 u32 dev, rev;
446
447 eth_data->shared = &mv78xx0_ge10_shared;
448 mv78xx0_ge10.dev.platform_data = eth_data;
449
450 /*
451 * On the Z0, ge10 and ge11 are internally connected back
452 * to back, and not brought out.
453 */
454 mv78xx0_pcie_id(&dev, &rev);
455 if (dev == MV78X00_Z0_DEV_ID) {
456 eth_data->phy_addr = MV643XX_ETH_PHY_NONE;
457 eth_data->speed = SPEED_1000;
458 eth_data->duplex = DUPLEX_FULL;
459 }
460
461 platform_device_register(&mv78xx0_ge10_shared);
462 platform_device_register(&mv78xx0_ge10);
463 }
464
465
466 /*****************************************************************************
467 * GE11
468 ****************************************************************************/
469 struct mv643xx_eth_shared_platform_data mv78xx0_ge11_shared_data = {
470 .t_clk = 0,
471 .dram = &mv78xx0_mbus_dram_info,
472 .shared_smi = &mv78xx0_ge00_shared,
473 };
474
475 static struct resource mv78xx0_ge11_shared_resources[] = {
476 {
477 .name = "ge11 base",
478 .start = GE11_PHYS_BASE + 0x2000,
479 .end = GE11_PHYS_BASE + 0x3fff,
480 .flags = IORESOURCE_MEM,
481 },
482 };
483
484 static struct platform_device mv78xx0_ge11_shared = {
485 .name = MV643XX_ETH_SHARED_NAME,
486 .id = 3,
487 .dev = {
488 .platform_data = &mv78xx0_ge11_shared_data,
489 },
490 .num_resources = 1,
491 .resource = mv78xx0_ge11_shared_resources,
492 };
493
494 static struct resource mv78xx0_ge11_resources[] = {
495 {
496 .name = "ge11 irq",
497 .start = IRQ_MV78XX0_GE11_SUM,
498 .end = IRQ_MV78XX0_GE11_SUM,
499 .flags = IORESOURCE_IRQ,
500 },
501 };
502
503 static struct platform_device mv78xx0_ge11 = {
504 .name = MV643XX_ETH_NAME,
505 .id = 3,
506 .num_resources = 1,
507 .resource = mv78xx0_ge11_resources,
508 .dev = {
509 .coherent_dma_mask = 0xffffffff,
510 },
511 };
512
513 void __init mv78xx0_ge11_init(struct mv643xx_eth_platform_data *eth_data)
514 {
515 u32 dev, rev;
516
517 eth_data->shared = &mv78xx0_ge11_shared;
518 mv78xx0_ge11.dev.platform_data = eth_data;
519
520 /*
521 * On the Z0, ge10 and ge11 are internally connected back
522 * to back, and not brought out.
523 */
524 mv78xx0_pcie_id(&dev, &rev);
525 if (dev == MV78X00_Z0_DEV_ID) {
526 eth_data->phy_addr = MV643XX_ETH_PHY_NONE;
527 eth_data->speed = SPEED_1000;
528 eth_data->duplex = DUPLEX_FULL;
529 }
530
531 platform_device_register(&mv78xx0_ge11_shared);
532 platform_device_register(&mv78xx0_ge11);
533 }
534
535 /*****************************************************************************
536 * I2C bus 0
537 ****************************************************************************/
538
539 static struct mv64xxx_i2c_pdata mv78xx0_i2c_0_pdata = {
540 .freq_m = 8, /* assumes 166 MHz TCLK */
541 .freq_n = 3,
542 .timeout = 1000, /* Default timeout of 1 second */
543 };
544
545 static struct resource mv78xx0_i2c_0_resources[] = {
546 {
547 .start = I2C_0_PHYS_BASE,
548 .end = I2C_0_PHYS_BASE + 0x1f,
549 .flags = IORESOURCE_MEM,
550 }, {
551 .start = IRQ_MV78XX0_I2C_0,
552 .end = IRQ_MV78XX0_I2C_0,
553 .flags = IORESOURCE_IRQ,
554 },
555 };
556
557
558 static struct platform_device mv78xx0_i2c_0 = {
559 .name = MV64XXX_I2C_CTLR_NAME,
560 .id = 0,
561 .num_resources = ARRAY_SIZE(mv78xx0_i2c_0_resources),
562 .resource = mv78xx0_i2c_0_resources,
563 .dev = {
564 .platform_data = &mv78xx0_i2c_0_pdata,
565 },
566 };
567
568 /*****************************************************************************
569 * I2C bus 1
570 ****************************************************************************/
571
572 static struct mv64xxx_i2c_pdata mv78xx0_i2c_1_pdata = {
573 .freq_m = 8, /* assumes 166 MHz TCLK */
574 .freq_n = 3,
575 .timeout = 1000, /* Default timeout of 1 second */
576 };
577
578 static struct resource mv78xx0_i2c_1_resources[] = {
579 {
580 .start = I2C_1_PHYS_BASE,
581 .end = I2C_1_PHYS_BASE + 0x1f,
582 .flags = IORESOURCE_MEM,
583 }, {
584 .start = IRQ_MV78XX0_I2C_1,
585 .end = IRQ_MV78XX0_I2C_1,
586 .flags = IORESOURCE_IRQ,
587 },
588 };
589
590
591 static struct platform_device mv78xx0_i2c_1 = {
592 .name = MV64XXX_I2C_CTLR_NAME,
593 .id = 1,
594 .num_resources = ARRAY_SIZE(mv78xx0_i2c_1_resources),
595 .resource = mv78xx0_i2c_1_resources,
596 .dev = {
597 .platform_data = &mv78xx0_i2c_1_pdata,
598 },
599 };
600
601 void __init mv78xx0_i2c_init(void)
602 {
603 platform_device_register(&mv78xx0_i2c_0);
604 platform_device_register(&mv78xx0_i2c_1);
605 }
606
607 /*****************************************************************************
608 * SATA
609 ****************************************************************************/
610 static struct resource mv78xx0_sata_resources[] = {
611 {
612 .name = "sata base",
613 .start = SATA_PHYS_BASE,
614 .end = SATA_PHYS_BASE + 0x5000 - 1,
615 .flags = IORESOURCE_MEM,
616 }, {
617 .name = "sata irq",
618 .start = IRQ_MV78XX0_SATA,
619 .end = IRQ_MV78XX0_SATA,
620 .flags = IORESOURCE_IRQ,
621 },
622 };
623
624 static struct platform_device mv78xx0_sata = {
625 .name = "sata_mv",
626 .id = 0,
627 .dev = {
628 .coherent_dma_mask = 0xffffffff,
629 },
630 .num_resources = ARRAY_SIZE(mv78xx0_sata_resources),
631 .resource = mv78xx0_sata_resources,
632 };
633
634 void __init mv78xx0_sata_init(struct mv_sata_platform_data *sata_data)
635 {
636 sata_data->dram = &mv78xx0_mbus_dram_info;
637 mv78xx0_sata.dev.platform_data = sata_data;
638 platform_device_register(&mv78xx0_sata);
639 }
640
641
642 /*****************************************************************************
643 * UART0
644 ****************************************************************************/
645 static struct plat_serial8250_port mv78xx0_uart0_data[] = {
646 {
647 .mapbase = UART0_PHYS_BASE,
648 .membase = (char *)UART0_VIRT_BASE,
649 .irq = IRQ_MV78XX0_UART_0,
650 .flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
651 .iotype = UPIO_MEM,
652 .regshift = 2,
653 .uartclk = 0,
654 }, {
655 },
656 };
657
658 static struct resource mv78xx0_uart0_resources[] = {
659 {
660 .start = UART0_PHYS_BASE,
661 .end = UART0_PHYS_BASE + 0xff,
662 .flags = IORESOURCE_MEM,
663 }, {
664 .start = IRQ_MV78XX0_UART_0,
665 .end = IRQ_MV78XX0_UART_0,
666 .flags = IORESOURCE_IRQ,
667 },
668 };
669
670 static struct platform_device mv78xx0_uart0 = {
671 .name = "serial8250",
672 .id = 0,
673 .dev = {
674 .platform_data = mv78xx0_uart0_data,
675 },
676 .resource = mv78xx0_uart0_resources,
677 .num_resources = ARRAY_SIZE(mv78xx0_uart0_resources),
678 };
679
680 void __init mv78xx0_uart0_init(void)
681 {
682 platform_device_register(&mv78xx0_uart0);
683 }
684
685
686 /*****************************************************************************
687 * UART1
688 ****************************************************************************/
689 static struct plat_serial8250_port mv78xx0_uart1_data[] = {
690 {
691 .mapbase = UART1_PHYS_BASE,
692 .membase = (char *)UART1_VIRT_BASE,
693 .irq = IRQ_MV78XX0_UART_1,
694 .flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
695 .iotype = UPIO_MEM,
696 .regshift = 2,
697 .uartclk = 0,
698 }, {
699 },
700 };
701
702 static struct resource mv78xx0_uart1_resources[] = {
703 {
704 .start = UART1_PHYS_BASE,
705 .end = UART1_PHYS_BASE + 0xff,
706 .flags = IORESOURCE_MEM,
707 }, {
708 .start = IRQ_MV78XX0_UART_1,
709 .end = IRQ_MV78XX0_UART_1,
710 .flags = IORESOURCE_IRQ,
711 },
712 };
713
714 static struct platform_device mv78xx0_uart1 = {
715 .name = "serial8250",
716 .id = 1,
717 .dev = {
718 .platform_data = mv78xx0_uart1_data,
719 },
720 .resource = mv78xx0_uart1_resources,
721 .num_resources = ARRAY_SIZE(mv78xx0_uart1_resources),
722 };
723
724 void __init mv78xx0_uart1_init(void)
725 {
726 platform_device_register(&mv78xx0_uart1);
727 }
728
729
730 /*****************************************************************************
731 * UART2
732 ****************************************************************************/
733 static struct plat_serial8250_port mv78xx0_uart2_data[] = {
734 {
735 .mapbase = UART2_PHYS_BASE,
736 .membase = (char *)UART2_VIRT_BASE,
737 .irq = IRQ_MV78XX0_UART_2,
738 .flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
739 .iotype = UPIO_MEM,
740 .regshift = 2,
741 .uartclk = 0,
742 }, {
743 },
744 };
745
746 static struct resource mv78xx0_uart2_resources[] = {
747 {
748 .start = UART2_PHYS_BASE,
749 .end = UART2_PHYS_BASE + 0xff,
750 .flags = IORESOURCE_MEM,
751 }, {
752 .start = IRQ_MV78XX0_UART_2,
753 .end = IRQ_MV78XX0_UART_2,
754 .flags = IORESOURCE_IRQ,
755 },
756 };
757
758 static struct platform_device mv78xx0_uart2 = {
759 .name = "serial8250",
760 .id = 2,
761 .dev = {
762 .platform_data = mv78xx0_uart2_data,
763 },
764 .resource = mv78xx0_uart2_resources,
765 .num_resources = ARRAY_SIZE(mv78xx0_uart2_resources),
766 };
767
768 void __init mv78xx0_uart2_init(void)
769 {
770 platform_device_register(&mv78xx0_uart2);
771 }
772
773
774 /*****************************************************************************
775 * UART3
776 ****************************************************************************/
777 static struct plat_serial8250_port mv78xx0_uart3_data[] = {
778 {
779 .mapbase = UART3_PHYS_BASE,
780 .membase = (char *)UART3_VIRT_BASE,
781 .irq = IRQ_MV78XX0_UART_3,
782 .flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
783 .iotype = UPIO_MEM,
784 .regshift = 2,
785 .uartclk = 0,
786 }, {
787 },
788 };
789
790 static struct resource mv78xx0_uart3_resources[] = {
791 {
792 .start = UART3_PHYS_BASE,
793 .end = UART3_PHYS_BASE + 0xff,
794 .flags = IORESOURCE_MEM,
795 }, {
796 .start = IRQ_MV78XX0_UART_3,
797 .end = IRQ_MV78XX0_UART_3,
798 .flags = IORESOURCE_IRQ,
799 },
800 };
801
802 static struct platform_device mv78xx0_uart3 = {
803 .name = "serial8250",
804 .id = 3,
805 .dev = {
806 .platform_data = mv78xx0_uart3_data,
807 },
808 .resource = mv78xx0_uart3_resources,
809 .num_resources = ARRAY_SIZE(mv78xx0_uart3_resources),
810 };
811
812 void __init mv78xx0_uart3_init(void)
813 {
814 platform_device_register(&mv78xx0_uart3);
815 }
816
817
818 /*****************************************************************************
819 * Time handling
820 ****************************************************************************/
821 static void mv78xx0_timer_init(void)
822 {
823 orion_time_init(IRQ_MV78XX0_TIMER_1, get_tclk());
824 }
825
826 struct sys_timer mv78xx0_timer = {
827 .init = mv78xx0_timer_init,
828 };
829
830
831 /*****************************************************************************
832 * General
833 ****************************************************************************/
834 static char * __init mv78xx0_id(void)
835 {
836 u32 dev, rev;
837
838 mv78xx0_pcie_id(&dev, &rev);
839
840 if (dev == MV78X00_Z0_DEV_ID) {
841 if (rev == MV78X00_REV_Z0)
842 return "MV78X00-Z0";
843 else
844 return "MV78X00-Rev-Unsupported";
845 } else if (dev == MV78100_DEV_ID) {
846 if (rev == MV78100_REV_A0)
847 return "MV78100-A0";
848 else
849 return "MV78100-Rev-Unsupported";
850 } else if (dev == MV78200_DEV_ID) {
851 if (rev == MV78100_REV_A0)
852 return "MV78200-A0";
853 else
854 return "MV78200-Rev-Unsupported";
855 } else {
856 return "Device-Unknown";
857 }
858 }
859
860 static int __init is_l2_writethrough(void)
861 {
862 return !!(readl(CPU_CONTROL) & L2_WRITETHROUGH);
863 }
864
865 void __init mv78xx0_init(void)
866 {
867 int core_index;
868 int hclk;
869 int pclk;
870 int l2clk;
871 int tclk;
872
873 core_index = mv78xx0_core_index();
874 hclk = get_hclk();
875 get_pclk_l2clk(hclk, core_index, &pclk, &l2clk);
876 tclk = get_tclk();
877
878 printk(KERN_INFO "%s ", mv78xx0_id());
879 printk("core #%d, ", core_index);
880 printk("PCLK = %dMHz, ", (pclk + 499999) / 1000000);
881 printk("L2 = %dMHz, ", (l2clk + 499999) / 1000000);
882 printk("HCLK = %dMHz, ", (hclk + 499999) / 1000000);
883 printk("TCLK = %dMHz\n", (tclk + 499999) / 1000000);
884
885 mv78xx0_setup_cpu_mbus();
886
887 #ifdef CONFIG_CACHE_FEROCEON_L2
888 feroceon_l2_init(is_l2_writethrough());
889 #endif
890
891 mv78xx0_ge00_shared_data.t_clk = tclk;
892 mv78xx0_ge01_shared_data.t_clk = tclk;
893 mv78xx0_ge10_shared_data.t_clk = tclk;
894 mv78xx0_ge11_shared_data.t_clk = tclk;
895 mv78xx0_uart0_data[0].uartclk = tclk;
896 mv78xx0_uart1_data[0].uartclk = tclk;
897 mv78xx0_uart2_data[0].uartclk = tclk;
898 mv78xx0_uart3_data[0].uartclk = tclk;
899 }
Support for the Chinese Samsung S3C2440 based development boards