b3404b7775b318d9beef5e617d9b3ac5e1cd405f
[linux-2.6.git] / arch / arm / mach-kirkwood / common.c
1 /*
2  * arch/arm/mach-kirkwood/common.c
3  *
4  * Core functions for Marvell Kirkwood 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/ata_platform.h>
18 #include <linux/spi/orion_spi.h>
19 #include <net/dsa.h>
20 #include <asm/page.h>
21 #include <asm/timex.h>
22 #include <asm/mach/map.h>
23 #include <asm/mach/time.h>
24 #include <mach/kirkwood.h>
25 #include <plat/cache-feroceon-l2.h>
26 #include <plat/ehci-orion.h>
27 #include <plat/mv_xor.h>
28 #include <plat/orion_nand.h>
29 #include <plat/time.h>
30 #include "common.h"
31
32 /*****************************************************************************
33  * I/O Address Mapping
34  ****************************************************************************/
35 static struct map_desc kirkwood_io_desc[] __initdata = {
36         {
37                 .virtual        = KIRKWOOD_PCIE_IO_VIRT_BASE,
38                 .pfn            = __phys_to_pfn(KIRKWOOD_PCIE_IO_PHYS_BASE),
39                 .length         = KIRKWOOD_PCIE_IO_SIZE,
40                 .type           = MT_DEVICE,
41         }, {
42                 .virtual        = KIRKWOOD_REGS_VIRT_BASE,
43                 .pfn            = __phys_to_pfn(KIRKWOOD_REGS_PHYS_BASE),
44                 .length         = KIRKWOOD_REGS_SIZE,
45                 .type           = MT_DEVICE,
46         },
47 };
48
49 void __init kirkwood_map_io(void)
50 {
51         iotable_init(kirkwood_io_desc, ARRAY_SIZE(kirkwood_io_desc));
52 }
53
54
55 /*****************************************************************************
56  * EHCI
57  ****************************************************************************/
58 static struct orion_ehci_data kirkwood_ehci_data = {
59         .dram           = &kirkwood_mbus_dram_info,
60         .phy_version    = EHCI_PHY_NA,
61 };
62
63 static u64 ehci_dmamask = 0xffffffffUL;
64
65
66 /*****************************************************************************
67  * EHCI0
68  ****************************************************************************/
69 static struct resource kirkwood_ehci_resources[] = {
70         {
71                 .start  = USB_PHYS_BASE,
72                 .end    = USB_PHYS_BASE + 0x0fff,
73                 .flags  = IORESOURCE_MEM,
74         }, {
75                 .start  = IRQ_KIRKWOOD_USB,
76                 .end    = IRQ_KIRKWOOD_USB,
77                 .flags  = IORESOURCE_IRQ,
78         },
79 };
80
81 static struct platform_device kirkwood_ehci = {
82         .name           = "orion-ehci",
83         .id             = 0,
84         .dev            = {
85                 .dma_mask               = &ehci_dmamask,
86                 .coherent_dma_mask      = 0xffffffff,
87                 .platform_data          = &kirkwood_ehci_data,
88         },
89         .resource       = kirkwood_ehci_resources,
90         .num_resources  = ARRAY_SIZE(kirkwood_ehci_resources),
91 };
92
93 void __init kirkwood_ehci_init(void)
94 {
95         platform_device_register(&kirkwood_ehci);
96 }
97
98
99 /*****************************************************************************
100  * GE00
101  ****************************************************************************/
102 struct mv643xx_eth_shared_platform_data kirkwood_ge00_shared_data = {
103         .dram           = &kirkwood_mbus_dram_info,
104 };
105
106 static struct resource kirkwood_ge00_shared_resources[] = {
107         {
108                 .name   = "ge00 base",
109                 .start  = GE00_PHYS_BASE + 0x2000,
110                 .end    = GE00_PHYS_BASE + 0x3fff,
111                 .flags  = IORESOURCE_MEM,
112         }, {
113                 .name   = "ge00 err irq",
114                 .start  = IRQ_KIRKWOOD_GE00_ERR,
115                 .end    = IRQ_KIRKWOOD_GE00_ERR,
116                 .flags  = IORESOURCE_IRQ,
117         },
118 };
119
120 static struct platform_device kirkwood_ge00_shared = {
121         .name           = MV643XX_ETH_SHARED_NAME,
122         .id             = 0,
123         .dev            = {
124                 .platform_data  = &kirkwood_ge00_shared_data,
125         },
126         .num_resources  = ARRAY_SIZE(kirkwood_ge00_shared_resources),
127         .resource       = kirkwood_ge00_shared_resources,
128 };
129
130 static struct resource kirkwood_ge00_resources[] = {
131         {
132                 .name   = "ge00 irq",
133                 .start  = IRQ_KIRKWOOD_GE00_SUM,
134                 .end    = IRQ_KIRKWOOD_GE00_SUM,
135                 .flags  = IORESOURCE_IRQ,
136         },
137 };
138
139 static struct platform_device kirkwood_ge00 = {
140         .name           = MV643XX_ETH_NAME,
141         .id             = 0,
142         .num_resources  = 1,
143         .resource       = kirkwood_ge00_resources,
144 };
145
146 void __init kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data)
147 {
148         eth_data->shared = &kirkwood_ge00_shared;
149         kirkwood_ge00.dev.platform_data = eth_data;
150
151         platform_device_register(&kirkwood_ge00_shared);
152         platform_device_register(&kirkwood_ge00);
153 }
154
155
156 /*****************************************************************************
157  * GE01
158  ****************************************************************************/
159 struct mv643xx_eth_shared_platform_data kirkwood_ge01_shared_data = {
160         .dram           = &kirkwood_mbus_dram_info,
161         .shared_smi     = &kirkwood_ge00_shared,
162 };
163
164 static struct resource kirkwood_ge01_shared_resources[] = {
165         {
166                 .name   = "ge01 base",
167                 .start  = GE01_PHYS_BASE + 0x2000,
168                 .end    = GE01_PHYS_BASE + 0x3fff,
169                 .flags  = IORESOURCE_MEM,
170         }, {
171                 .name   = "ge01 err irq",
172                 .start  = IRQ_KIRKWOOD_GE01_ERR,
173                 .end    = IRQ_KIRKWOOD_GE01_ERR,
174                 .flags  = IORESOURCE_IRQ,
175         },
176 };
177
178 static struct platform_device kirkwood_ge01_shared = {
179         .name           = MV643XX_ETH_SHARED_NAME,
180         .id             = 1,
181         .dev            = {
182                 .platform_data  = &kirkwood_ge01_shared_data,
183         },
184         .num_resources  = ARRAY_SIZE(kirkwood_ge01_shared_resources),
185         .resource       = kirkwood_ge01_shared_resources,
186 };
187
188 static struct resource kirkwood_ge01_resources[] = {
189         {
190                 .name   = "ge01 irq",
191                 .start  = IRQ_KIRKWOOD_GE01_SUM,
192                 .end    = IRQ_KIRKWOOD_GE01_SUM,
193                 .flags  = IORESOURCE_IRQ,
194         },
195 };
196
197 static struct platform_device kirkwood_ge01 = {
198         .name           = MV643XX_ETH_NAME,
199         .id             = 1,
200         .num_resources  = 1,
201         .resource       = kirkwood_ge01_resources,
202 };
203
204 void __init kirkwood_ge01_init(struct mv643xx_eth_platform_data *eth_data)
205 {
206         eth_data->shared = &kirkwood_ge01_shared;
207         kirkwood_ge01.dev.platform_data = eth_data;
208
209         platform_device_register(&kirkwood_ge01_shared);
210         platform_device_register(&kirkwood_ge01);
211 }
212
213
214 /*****************************************************************************
215  * Ethernet switch
216  ****************************************************************************/
217 static struct resource kirkwood_switch_resources[] = {
218         {
219                 .start  = 0,
220                 .end    = 0,
221                 .flags  = IORESOURCE_IRQ,
222         },
223 };
224
225 static struct platform_device kirkwood_switch_device = {
226         .name           = "dsa",
227         .id             = 0,
228         .num_resources  = 0,
229         .resource       = kirkwood_switch_resources,
230 };
231
232 void __init kirkwood_ge00_switch_init(struct dsa_platform_data *d, int irq)
233 {
234         if (irq != NO_IRQ) {
235                 kirkwood_switch_resources[0].start = irq;
236                 kirkwood_switch_resources[0].end = irq;
237                 kirkwood_switch_device.num_resources = 1;
238         }
239
240         d->mii_bus = &kirkwood_ge00_shared.dev;
241         d->netdev = &kirkwood_ge00.dev;
242         kirkwood_switch_device.dev.platform_data = d;
243
244         platform_device_register(&kirkwood_switch_device);
245 }
246
247
248 /*****************************************************************************
249  * SoC RTC
250  ****************************************************************************/
251 static struct resource kirkwood_rtc_resource = {
252         .start  = RTC_PHYS_BASE,
253         .end    = RTC_PHYS_BASE + SZ_16 - 1,
254         .flags  = IORESOURCE_MEM,
255 };
256
257 void __init kirkwood_rtc_init(void)
258 {
259         platform_device_register_simple("rtc-mv", -1, &kirkwood_rtc_resource, 1);
260 }
261
262
263 /*****************************************************************************
264  * SATA
265  ****************************************************************************/
266 static struct resource kirkwood_sata_resources[] = {
267         {
268                 .name   = "sata base",
269                 .start  = SATA_PHYS_BASE,
270                 .end    = SATA_PHYS_BASE + 0x5000 - 1,
271                 .flags  = IORESOURCE_MEM,
272         }, {
273                 .name   = "sata irq",
274                 .start  = IRQ_KIRKWOOD_SATA,
275                 .end    = IRQ_KIRKWOOD_SATA,
276                 .flags  = IORESOURCE_IRQ,
277         },
278 };
279
280 static struct platform_device kirkwood_sata = {
281         .name           = "sata_mv",
282         .id             = 0,
283         .dev            = {
284                 .coherent_dma_mask      = 0xffffffff,
285         },
286         .num_resources  = ARRAY_SIZE(kirkwood_sata_resources),
287         .resource       = kirkwood_sata_resources,
288 };
289
290 void __init kirkwood_sata_init(struct mv_sata_platform_data *sata_data)
291 {
292         sata_data->dram = &kirkwood_mbus_dram_info;
293         kirkwood_sata.dev.platform_data = sata_data;
294         platform_device_register(&kirkwood_sata);
295 }
296
297
298 /*****************************************************************************
299  * SPI
300  ****************************************************************************/
301 static struct orion_spi_info kirkwood_spi_plat_data = {
302 };
303
304 static struct resource kirkwood_spi_resources[] = {
305         {
306                 .start  = SPI_PHYS_BASE,
307                 .end    = SPI_PHYS_BASE + SZ_512 - 1,
308                 .flags  = IORESOURCE_MEM,
309         },
310 };
311
312 static struct platform_device kirkwood_spi = {
313         .name           = "orion_spi",
314         .id             = 0,
315         .resource       = kirkwood_spi_resources,
316         .dev            = {
317                 .platform_data  = &kirkwood_spi_plat_data,
318         },
319         .num_resources  = ARRAY_SIZE(kirkwood_spi_resources),
320 };
321
322 void __init kirkwood_spi_init()
323 {
324         platform_device_register(&kirkwood_spi);
325 }
326
327
328 /*****************************************************************************
329  * UART0
330  ****************************************************************************/
331 static struct plat_serial8250_port kirkwood_uart0_data[] = {
332         {
333                 .mapbase        = UART0_PHYS_BASE,
334                 .membase        = (char *)UART0_VIRT_BASE,
335                 .irq            = IRQ_KIRKWOOD_UART_0,
336                 .flags          = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
337                 .iotype         = UPIO_MEM,
338                 .regshift       = 2,
339                 .uartclk        = 0,
340         }, {
341         },
342 };
343
344 static struct resource kirkwood_uart0_resources[] = {
345         {
346                 .start          = UART0_PHYS_BASE,
347                 .end            = UART0_PHYS_BASE + 0xff,
348                 .flags          = IORESOURCE_MEM,
349         }, {
350                 .start          = IRQ_KIRKWOOD_UART_0,
351                 .end            = IRQ_KIRKWOOD_UART_0,
352                 .flags          = IORESOURCE_IRQ,
353         },
354 };
355
356 static struct platform_device kirkwood_uart0 = {
357         .name                   = "serial8250",
358         .id                     = 0,
359         .dev                    = {
360                 .platform_data  = kirkwood_uart0_data,
361         },
362         .resource               = kirkwood_uart0_resources,
363         .num_resources          = ARRAY_SIZE(kirkwood_uart0_resources),
364 };
365
366 void __init kirkwood_uart0_init(void)
367 {
368         platform_device_register(&kirkwood_uart0);
369 }
370
371
372 /*****************************************************************************
373  * UART1
374  ****************************************************************************/
375 static struct plat_serial8250_port kirkwood_uart1_data[] = {
376         {
377                 .mapbase        = UART1_PHYS_BASE,
378                 .membase        = (char *)UART1_VIRT_BASE,
379                 .irq            = IRQ_KIRKWOOD_UART_1,
380                 .flags          = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
381                 .iotype         = UPIO_MEM,
382                 .regshift       = 2,
383                 .uartclk        = 0,
384         }, {
385         },
386 };
387
388 static struct resource kirkwood_uart1_resources[] = {
389         {
390                 .start          = UART1_PHYS_BASE,
391                 .end            = UART1_PHYS_BASE + 0xff,
392                 .flags          = IORESOURCE_MEM,
393         }, {
394                 .start          = IRQ_KIRKWOOD_UART_1,
395                 .end            = IRQ_KIRKWOOD_UART_1,
396                 .flags          = IORESOURCE_IRQ,
397         },
398 };
399
400 static struct platform_device kirkwood_uart1 = {
401         .name                   = "serial8250",
402         .id                     = 1,
403         .dev                    = {
404                 .platform_data  = kirkwood_uart1_data,
405         },
406         .resource               = kirkwood_uart1_resources,
407         .num_resources          = ARRAY_SIZE(kirkwood_uart1_resources),
408 };
409
410 void __init kirkwood_uart1_init(void)
411 {
412         platform_device_register(&kirkwood_uart1);
413 }
414
415
416 /*****************************************************************************
417  * XOR
418  ****************************************************************************/
419 static struct mv_xor_platform_shared_data kirkwood_xor_shared_data = {
420         .dram           = &kirkwood_mbus_dram_info,
421 };
422
423 static u64 kirkwood_xor_dmamask = DMA_32BIT_MASK;
424
425
426 /*****************************************************************************
427  * XOR0
428  ****************************************************************************/
429 static struct resource kirkwood_xor0_shared_resources[] = {
430         {
431                 .name   = "xor 0 low",
432                 .start  = XOR0_PHYS_BASE,
433                 .end    = XOR0_PHYS_BASE + 0xff,
434                 .flags  = IORESOURCE_MEM,
435         }, {
436                 .name   = "xor 0 high",
437                 .start  = XOR0_HIGH_PHYS_BASE,
438                 .end    = XOR0_HIGH_PHYS_BASE + 0xff,
439                 .flags  = IORESOURCE_MEM,
440         },
441 };
442
443 static struct platform_device kirkwood_xor0_shared = {
444         .name           = MV_XOR_SHARED_NAME,
445         .id             = 0,
446         .dev            = {
447                 .platform_data = &kirkwood_xor_shared_data,
448         },
449         .num_resources  = ARRAY_SIZE(kirkwood_xor0_shared_resources),
450         .resource       = kirkwood_xor0_shared_resources,
451 };
452
453 static struct resource kirkwood_xor00_resources[] = {
454         [0] = {
455                 .start  = IRQ_KIRKWOOD_XOR_00,
456                 .end    = IRQ_KIRKWOOD_XOR_00,
457                 .flags  = IORESOURCE_IRQ,
458         },
459 };
460
461 static struct mv_xor_platform_data kirkwood_xor00_data = {
462         .shared         = &kirkwood_xor0_shared,
463         .hw_id          = 0,
464         .pool_size      = PAGE_SIZE,
465 };
466
467 static struct platform_device kirkwood_xor00_channel = {
468         .name           = MV_XOR_NAME,
469         .id             = 0,
470         .num_resources  = ARRAY_SIZE(kirkwood_xor00_resources),
471         .resource       = kirkwood_xor00_resources,
472         .dev            = {
473                 .dma_mask               = &kirkwood_xor_dmamask,
474                 .coherent_dma_mask      = DMA_64BIT_MASK,
475                 .platform_data          = (void *)&kirkwood_xor00_data,
476         },
477 };
478
479 static struct resource kirkwood_xor01_resources[] = {
480         [0] = {
481                 .start  = IRQ_KIRKWOOD_XOR_01,
482                 .end    = IRQ_KIRKWOOD_XOR_01,
483                 .flags  = IORESOURCE_IRQ,
484         },
485 };
486
487 static struct mv_xor_platform_data kirkwood_xor01_data = {
488         .shared         = &kirkwood_xor0_shared,
489         .hw_id          = 1,
490         .pool_size      = PAGE_SIZE,
491 };
492
493 static struct platform_device kirkwood_xor01_channel = {
494         .name           = MV_XOR_NAME,
495         .id             = 1,
496         .num_resources  = ARRAY_SIZE(kirkwood_xor01_resources),
497         .resource       = kirkwood_xor01_resources,
498         .dev            = {
499                 .dma_mask               = &kirkwood_xor_dmamask,
500                 .coherent_dma_mask      = DMA_64BIT_MASK,
501                 .platform_data          = (void *)&kirkwood_xor01_data,
502         },
503 };
504
505 void __init kirkwood_xor0_init(void)
506 {
507         platform_device_register(&kirkwood_xor0_shared);
508
509         /*
510          * two engines can't do memset simultaneously, this limitation
511          * satisfied by removing memset support from one of the engines.
512          */
513         dma_cap_set(DMA_MEMCPY, kirkwood_xor00_data.cap_mask);
514         dma_cap_set(DMA_XOR, kirkwood_xor00_data.cap_mask);
515         platform_device_register(&kirkwood_xor00_channel);
516
517         dma_cap_set(DMA_MEMCPY, kirkwood_xor01_data.cap_mask);
518         dma_cap_set(DMA_MEMSET, kirkwood_xor01_data.cap_mask);
519         dma_cap_set(DMA_XOR, kirkwood_xor01_data.cap_mask);
520         platform_device_register(&kirkwood_xor01_channel);
521 }
522
523
524 /*****************************************************************************
525  * XOR1
526  ****************************************************************************/
527 static struct resource kirkwood_xor1_shared_resources[] = {
528         {
529                 .name   = "xor 1 low",
530                 .start  = XOR1_PHYS_BASE,
531                 .end    = XOR1_PHYS_BASE + 0xff,
532                 .flags  = IORESOURCE_MEM,
533         }, {
534                 .name   = "xor 1 high",
535                 .start  = XOR1_HIGH_PHYS_BASE,
536                 .end    = XOR1_HIGH_PHYS_BASE + 0xff,
537                 .flags  = IORESOURCE_MEM,
538         },
539 };
540
541 static struct platform_device kirkwood_xor1_shared = {
542         .name           = MV_XOR_SHARED_NAME,
543         .id             = 1,
544         .dev            = {
545                 .platform_data = &kirkwood_xor_shared_data,
546         },
547         .num_resources  = ARRAY_SIZE(kirkwood_xor1_shared_resources),
548         .resource       = kirkwood_xor1_shared_resources,
549 };
550
551 static struct resource kirkwood_xor10_resources[] = {
552         [0] = {
553                 .start  = IRQ_KIRKWOOD_XOR_10,
554                 .end    = IRQ_KIRKWOOD_XOR_10,
555                 .flags  = IORESOURCE_IRQ,
556         },
557 };
558
559 static struct mv_xor_platform_data kirkwood_xor10_data = {
560         .shared         = &kirkwood_xor1_shared,
561         .hw_id          = 0,
562         .pool_size      = PAGE_SIZE,
563 };
564
565 static struct platform_device kirkwood_xor10_channel = {
566         .name           = MV_XOR_NAME,
567         .id             = 2,
568         .num_resources  = ARRAY_SIZE(kirkwood_xor10_resources),
569         .resource       = kirkwood_xor10_resources,
570         .dev            = {
571                 .dma_mask               = &kirkwood_xor_dmamask,
572                 .coherent_dma_mask      = DMA_64BIT_MASK,
573                 .platform_data          = (void *)&kirkwood_xor10_data,
574         },
575 };
576
577 static struct resource kirkwood_xor11_resources[] = {
578         [0] = {
579                 .start  = IRQ_KIRKWOOD_XOR_11,
580                 .end    = IRQ_KIRKWOOD_XOR_11,
581                 .flags  = IORESOURCE_IRQ,
582         },
583 };
584
585 static struct mv_xor_platform_data kirkwood_xor11_data = {
586         .shared         = &kirkwood_xor1_shared,
587         .hw_id          = 1,
588         .pool_size      = PAGE_SIZE,
589 };
590
591 static struct platform_device kirkwood_xor11_channel = {
592         .name           = MV_XOR_NAME,
593         .id             = 3,
594         .num_resources  = ARRAY_SIZE(kirkwood_xor11_resources),
595         .resource       = kirkwood_xor11_resources,
596         .dev            = {
597                 .dma_mask               = &kirkwood_xor_dmamask,
598                 .coherent_dma_mask      = DMA_64BIT_MASK,
599                 .platform_data          = (void *)&kirkwood_xor11_data,
600         },
601 };
602
603 void __init kirkwood_xor1_init(void)
604 {
605         platform_device_register(&kirkwood_xor1_shared);
606
607         /*
608          * two engines can't do memset simultaneously, this limitation
609          * satisfied by removing memset support from one of the engines.
610          */
611         dma_cap_set(DMA_MEMCPY, kirkwood_xor10_data.cap_mask);
612         dma_cap_set(DMA_XOR, kirkwood_xor10_data.cap_mask);
613         platform_device_register(&kirkwood_xor10_channel);
614
615         dma_cap_set(DMA_MEMCPY, kirkwood_xor11_data.cap_mask);
616         dma_cap_set(DMA_MEMSET, kirkwood_xor11_data.cap_mask);
617         dma_cap_set(DMA_XOR, kirkwood_xor11_data.cap_mask);
618         platform_device_register(&kirkwood_xor11_channel);
619 }
620
621
622 /*****************************************************************************
623  * Time handling
624  ****************************************************************************/
625 int kirkwood_tclk;
626
627 int __init kirkwood_find_tclk(void)
628 {
629         u32 dev, rev;
630
631         kirkwood_pcie_id(&dev, &rev);
632         if (dev == MV88F6281_DEV_ID && rev == MV88F6281_REV_A0)
633                 return 200000000;
634
635         return 166666667;
636 }
637
638 static void kirkwood_timer_init(void)
639 {
640         kirkwood_tclk = kirkwood_find_tclk();
641         orion_time_init(IRQ_KIRKWOOD_BRIDGE, kirkwood_tclk);
642 }
643
644 struct sys_timer kirkwood_timer = {
645         .init = kirkwood_timer_init,
646 };
647
648
649 /*****************************************************************************
650  * General
651  ****************************************************************************/
652 /*
653  * Identify device ID and revision.
654  */
655 static char * __init kirkwood_id(void)
656 {
657         u32 dev, rev;
658
659         kirkwood_pcie_id(&dev, &rev);
660
661         if (dev == MV88F6281_DEV_ID) {
662                 if (rev == MV88F6281_REV_Z0)
663                         return "MV88F6281-Z0";
664                 else if (rev == MV88F6281_REV_A0)
665                         return "MV88F6281-A0";
666                 else
667                         return "MV88F6281-Rev-Unsupported";
668         } else if (dev == MV88F6192_DEV_ID) {
669                 if (rev == MV88F6192_REV_Z0)
670                         return "MV88F6192-Z0";
671                 else if (rev == MV88F6192_REV_A0)
672                         return "MV88F6192-A0";
673                 else
674                         return "MV88F6192-Rev-Unsupported";
675         } else if (dev == MV88F6180_DEV_ID) {
676                 if (rev == MV88F6180_REV_A0)
677                         return "MV88F6180-Rev-A0";
678                 else
679                         return "MV88F6180-Rev-Unsupported";
680         } else {
681                 return "Device-Unknown";
682         }
683 }
684
685 static void __init kirkwood_l2_init(void)
686 {
687 #ifdef CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH
688         writel(readl(L2_CONFIG_REG) | L2_WRITETHROUGH, L2_CONFIG_REG);
689         feroceon_l2_init(1);
690 #else
691         writel(readl(L2_CONFIG_REG) & ~L2_WRITETHROUGH, L2_CONFIG_REG);
692         feroceon_l2_init(0);
693 #endif
694 }
695
696 void __init kirkwood_init(void)
697 {
698         printk(KERN_INFO "Kirkwood: %s, TCLK=%d.\n",
699                 kirkwood_id(), kirkwood_tclk);
700         kirkwood_ge00_shared_data.t_clk = kirkwood_tclk;
701         kirkwood_ge01_shared_data.t_clk = kirkwood_tclk;
702         kirkwood_spi_plat_data.tclk = kirkwood_tclk;
703         kirkwood_uart0_data[0].uartclk = kirkwood_tclk;
704         kirkwood_uart1_data[0].uartclk = kirkwood_tclk;
705
706         kirkwood_setup_cpu_mbus();
707
708 #ifdef CONFIG_CACHE_FEROCEON_L2
709         kirkwood_l2_init();
710 #endif
711 }