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1 /*
2  * File:         arch/blackfin/mach-bf533/stamp.c
3  * Based on:     arch/blackfin/mach-bf533/ezkit.c
4  * Author:       Aidan Williams <aidan@nicta.com.au>
5  *
6  * Created:      2005
7  * Description:  Board Info File for the BF533-STAMP
8  *
9  * Modified:
10  *               Copyright 2005 National ICT Australia (NICTA)
11  *               Copyright 2004-2006 Analog Devices Inc.
12  *
13  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
14  *
15  * This program is free software; you can redistribute it and/or modify
16  * it under the terms of the GNU General Public License as published by
17  * the Free Software Foundation; either version 2 of the License, or
18  * (at your option) any later version.
19  *
20  * This program is distributed in the hope that it will be useful,
21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23  * GNU General Public License for more details.
24  *
25  * You should have received a copy of the GNU General Public License
26  * along with this program; if not, see the file COPYING, or write
27  * to the Free Software Foundation, Inc.,
28  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
29  */
30
31 #include <linux/device.h>
32 #include <linux/platform_device.h>
33 #include <linux/mtd/mtd.h>
34 #include <linux/mtd/partitions.h>
35 #include <linux/mtd/physmap.h>
36 #include <linux/spi/spi.h>
37 #include <linux/spi/flash.h>
38 #if defined(CONFIG_USB_ISP1362_HCD) || defined(CONFIG_USB_ISP1362_HCD_MODULE)
39 #include <linux/usb/isp1362.h>
40 #endif
41 #include <linux/ata_platform.h>
42 #include <linux/irq.h>
43 #include <linux/i2c.h>
44 #include <asm/dma.h>
45 #include <asm/bfin5xx_spi.h>
46 #include <asm/reboot.h>
47 #include <asm/portmux.h>
48 #include <asm/dpmc.h>
49
50 /*
51  * Name the Board for the /proc/cpuinfo
52  */
53 const char bfin_board_name[] = "ADDS-BF533-STAMP";
54
55 #if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
56 static struct platform_device rtc_device = {
57         .name = "rtc-bfin",
58         .id   = -1,
59 };
60 #endif
61
62 /*
63  *  Driver needs to know address, irq and flag pin.
64  */
65 #if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
66 static struct resource smc91x_resources[] = {
67         {
68                 .name = "smc91x-regs",
69                 .start = 0x20300300,
70                 .end = 0x20300300 + 16,
71                 .flags = IORESOURCE_MEM,
72         }, {
73                 .start = IRQ_PF7,
74                 .end = IRQ_PF7,
75                 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
76         },
77 };
78
79 static struct platform_device smc91x_device = {
80         .name = "smc91x",
81         .id = 0,
82         .num_resources = ARRAY_SIZE(smc91x_resources),
83         .resource = smc91x_resources,
84 };
85 #endif
86
87 #if defined(CONFIG_FB_BFIN_7393) || defined(CONFIG_FB_BFIN_7393_MODULE)
88 static struct platform_device bfin_fb_adv7393_device = {
89         .name = "bfin-adv7393",
90 };
91 #endif
92
93 #if defined(CONFIG_USB_NET2272) || defined(CONFIG_USB_NET2272_MODULE)
94 static struct resource net2272_bfin_resources[] = {
95         {
96                 .start = 0x20300000,
97                 .end = 0x20300000 + 0x100,
98                 .flags = IORESOURCE_MEM,
99         }, {
100                 .start = IRQ_PF10,
101                 .end = IRQ_PF10,
102                 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
103         },
104 };
105
106 static struct platform_device net2272_bfin_device = {
107         .name = "net2272",
108         .id = -1,
109         .num_resources = ARRAY_SIZE(net2272_bfin_resources),
110         .resource = net2272_bfin_resources,
111 };
112 #endif
113
114 #if defined(CONFIG_MTD_BFIN_ASYNC) || defined(CONFIG_MTD_BFIN_ASYNC_MODULE)
115 static struct mtd_partition stamp_partitions[] = {
116         {
117                 .name   = "bootloader(nor)",
118                 .size   = 0x40000,
119                 .offset = 0,
120         }, {
121                 .name   = "linux kernel(nor)",
122                 .size   = 0xE0000,
123                 .offset = MTDPART_OFS_APPEND,
124         }, {
125                 .name   = "file system(nor)",
126                 .size   = MTDPART_SIZ_FULL,
127                 .offset = MTDPART_OFS_APPEND,
128         }
129 };
130
131 static struct physmap_flash_data stamp_flash_data = {
132         .width    = 2,
133         .parts    = stamp_partitions,
134         .nr_parts = ARRAY_SIZE(stamp_partitions),
135 };
136
137 static struct resource stamp_flash_resource[] = {
138         {
139                 .name  = "cfi_probe",
140                 .start = 0x20000000,
141                 .end   = 0x203fffff,
142                 .flags = IORESOURCE_MEM,
143         }, {
144                 .start = 0x7BB07BB0,    /* AMBCTL0 setting when accessing flash */
145                 .end   = 0x7BB07BB0,    /* AMBCTL1 setting when accessing flash */
146                 .flags = IORESOURCE_MEM,
147         }, {
148                 .start = GPIO_PF0,
149                 .flags = IORESOURCE_IRQ,
150         }
151 };
152
153 static struct platform_device stamp_flash_device = {
154         .name          = "bfin-async-flash",
155         .id            = 0,
156         .dev = {
157                 .platform_data = &stamp_flash_data,
158         },
159         .num_resources = ARRAY_SIZE(stamp_flash_resource),
160         .resource      = stamp_flash_resource,
161 };
162 #endif
163
164 #if defined(CONFIG_MTD_M25P80) || defined(CONFIG_MTD_M25P80_MODULE)
165 static struct mtd_partition bfin_spi_flash_partitions[] = {
166         {
167                 .name = "bootloader(spi)",
168                 .size = 0x00040000,
169                 .offset = 0,
170                 .mask_flags = MTD_CAP_ROM
171         }, {
172                 .name = "linux kernel(spi)",
173                 .size = 0xe0000,
174                 .offset = MTDPART_OFS_APPEND,
175         }, {
176                 .name = "file system(spi)",
177                 .size = MTDPART_SIZ_FULL,
178                 .offset = MTDPART_OFS_APPEND,
179         }
180 };
181
182 static struct flash_platform_data bfin_spi_flash_data = {
183         .name = "m25p80",
184         .parts = bfin_spi_flash_partitions,
185         .nr_parts = ARRAY_SIZE(bfin_spi_flash_partitions),
186         .type = "m25p64",
187 };
188
189 /* SPI flash chip (m25p64) */
190 static struct bfin5xx_spi_chip spi_flash_chip_info = {
191         .enable_dma = 0,         /* use dma transfer with this chip*/
192         .bits_per_word = 8,
193 };
194 #endif
195
196 #if defined(CONFIG_SPI_ADC_BF533) || defined(CONFIG_SPI_ADC_BF533_MODULE)
197 /* SPI ADC chip */
198 static struct bfin5xx_spi_chip spi_adc_chip_info = {
199         .enable_dma = 1,         /* use dma transfer with this chip*/
200         .bits_per_word = 16,
201 };
202 #endif
203
204 #if defined(CONFIG_SND_BLACKFIN_AD1836) || defined(CONFIG_SND_BLACKFIN_AD1836_MODULE)
205 static struct bfin5xx_spi_chip ad1836_spi_chip_info = {
206         .enable_dma = 0,
207         .bits_per_word = 16,
208 };
209 #endif
210
211 #if defined(CONFIG_PBX)
212 static struct bfin5xx_spi_chip spi_si3xxx_chip_info = {
213         .ctl_reg        = 0x4, /* send zero */
214         .enable_dma     = 0,
215         .bits_per_word  = 8,
216         .cs_change_per_word = 1,
217 };
218 #endif
219
220 #if defined(CONFIG_SPI_MMC) || defined(CONFIG_SPI_MMC_MODULE)
221 static struct bfin5xx_spi_chip spi_mmc_chip_info = {
222         .enable_dma = 1,
223         .bits_per_word = 8,
224 };
225 #endif
226
227 #if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE)
228 static struct bfin5xx_spi_chip spidev_chip_info = {
229         .enable_dma = 0,
230         .bits_per_word = 8,
231 };
232 #endif
233
234 static struct spi_board_info bfin_spi_board_info[] __initdata = {
235 #if defined(CONFIG_MTD_M25P80) || defined(CONFIG_MTD_M25P80_MODULE)
236         {
237                 /* the modalias must be the same as spi device driver name */
238                 .modalias = "m25p80", /* Name of spi_driver for this device */
239                 .max_speed_hz = 25000000,     /* max spi clock (SCK) speed in HZ */
240                 .bus_num = 0, /* Framework bus number */
241                 .chip_select = 2, /* Framework chip select. On STAMP537 it is SPISSEL2*/
242                 .platform_data = &bfin_spi_flash_data,
243                 .controller_data = &spi_flash_chip_info,
244                 .mode = SPI_MODE_3,
245         },
246 #endif
247
248 #if defined(CONFIG_SPI_ADC_BF533) || defined(CONFIG_SPI_ADC_BF533_MODULE)
249         {
250                 .modalias = "bfin_spi_adc", /* Name of spi_driver for this device */
251                 .max_speed_hz = 6250000,     /* max spi clock (SCK) speed in HZ */
252                 .bus_num = 0, /* Framework bus number */
253                 .chip_select = 1, /* Framework chip select. */
254                 .platform_data = NULL, /* No spi_driver specific config */
255                 .controller_data = &spi_adc_chip_info,
256         },
257 #endif
258
259 #if defined(CONFIG_SND_BLACKFIN_AD1836) || defined(CONFIG_SND_BLACKFIN_AD1836_MODULE)
260         {
261                 .modalias = "ad1836-spi",
262                 .max_speed_hz = 31250000,     /* max spi clock (SCK) speed in HZ */
263                 .bus_num = 0,
264                 .chip_select = CONFIG_SND_BLACKFIN_SPI_PFBIT,
265                 .controller_data = &ad1836_spi_chip_info,
266         },
267 #endif
268
269 #if defined(CONFIG_SPI_MMC) || defined(CONFIG_SPI_MMC_MODULE)
270         {
271                 .modalias = "spi_mmc_dummy",
272                 .max_speed_hz = 20000000,     /* max spi clock (SCK) speed in HZ */
273                 .bus_num = 0,
274                 .chip_select = 0,
275                 .platform_data = NULL,
276                 .controller_data = &spi_mmc_chip_info,
277                 .mode = SPI_MODE_3,
278         },
279         {
280                 .modalias = "spi_mmc",
281                 .max_speed_hz = 20000000,     /* max spi clock (SCK) speed in HZ */
282                 .bus_num = 0,
283                 .chip_select = CONFIG_SPI_MMC_CS_CHAN,
284                 .platform_data = NULL,
285                 .controller_data = &spi_mmc_chip_info,
286                 .mode = SPI_MODE_3,
287         },
288 #endif
289
290 #if defined(CONFIG_PBX)
291         {
292                 .modalias = "fxs-spi",
293                 .max_speed_hz = 12500000,     /* max spi clock (SCK) speed in HZ */
294                 .bus_num = 0,
295                 .chip_select = 8 - CONFIG_J11_JUMPER,
296                 .controller_data = &spi_si3xxx_chip_info,
297                 .mode = SPI_MODE_3,
298         },
299         {
300                 .modalias = "fxo-spi",
301                 .max_speed_hz = 12500000,     /* max spi clock (SCK) speed in HZ */
302                 .bus_num = 0,
303                 .chip_select = 8 - CONFIG_J19_JUMPER,
304                 .controller_data = &spi_si3xxx_chip_info,
305                 .mode = SPI_MODE_3,
306         },
307 #endif
308
309 #if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE)
310         {
311                 .modalias = "spidev",
312                 .max_speed_hz = 3125000,     /* max spi clock (SCK) speed in HZ */
313                 .bus_num = 0,
314                 .chip_select = 1,
315                 .controller_data = &spidev_chip_info,
316         },
317 #endif
318 };
319
320 #if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
321 /* SPI (0) */
322 static struct resource bfin_spi0_resource[] = {
323         [0] = {
324                 .start = SPI0_REGBASE,
325                 .end   = SPI0_REGBASE + 0xFF,
326                 .flags = IORESOURCE_MEM,
327         },
328         [1] = {
329                 .start = CH_SPI,
330                 .end   = CH_SPI,
331                 .flags = IORESOURCE_IRQ,
332         }
333 };
334
335 /* SPI controller data */
336 static struct bfin5xx_spi_master bfin_spi0_info = {
337         .num_chipselect = 8,
338         .enable_dma = 1,  /* master has the ability to do dma transfer */
339         .pin_req = {P_SPI0_SCK, P_SPI0_MISO, P_SPI0_MOSI, 0},
340 };
341
342 static struct platform_device bfin_spi0_device = {
343         .name = "bfin-spi",
344         .id = 0, /* Bus number */
345         .num_resources = ARRAY_SIZE(bfin_spi0_resource),
346         .resource = bfin_spi0_resource,
347         .dev = {
348                 .platform_data = &bfin_spi0_info, /* Passed to driver */
349         },
350 };
351 #endif  /* spi master and devices */
352
353 #if defined(CONFIG_FB_BF537_LQ035) || defined(CONFIG_FB_BF537_LQ035_MODULE)
354 static struct platform_device bfin_fb_device = {
355         .name = "bf537-fb",
356 };
357 #endif
358
359 #if defined(CONFIG_SERIAL_BFIN) || defined(CONFIG_SERIAL_BFIN_MODULE)
360 static struct resource bfin_uart_resources[] = {
361         {
362                 .start = 0xFFC00400,
363                 .end = 0xFFC004FF,
364                 .flags = IORESOURCE_MEM,
365         },
366 };
367
368 static struct platform_device bfin_uart_device = {
369         .name = "bfin-uart",
370         .id = 1,
371         .num_resources = ARRAY_SIZE(bfin_uart_resources),
372         .resource = bfin_uart_resources,
373 };
374 #endif
375
376 #if defined(CONFIG_BFIN_SIR) || defined(CONFIG_BFIN_SIR_MODULE)
377 static struct resource bfin_sir_resources[] = {
378 #ifdef CONFIG_BFIN_SIR0
379         {
380                 .start = 0xFFC00400,
381                 .end = 0xFFC004FF,
382                 .flags = IORESOURCE_MEM,
383         },
384 #endif
385 };
386
387 static struct platform_device bfin_sir_device = {
388         .name = "bfin_sir",
389         .id = 0,
390         .num_resources = ARRAY_SIZE(bfin_sir_resources),
391         .resource = bfin_sir_resources,
392 };
393 #endif
394
395 #if defined(CONFIG_SERIAL_BFIN_SPORT) || defined(CONFIG_SERIAL_BFIN_SPORT_MODULE)
396 static struct platform_device bfin_sport0_uart_device = {
397         .name = "bfin-sport-uart",
398         .id = 0,
399 };
400
401 static struct platform_device bfin_sport1_uart_device = {
402         .name = "bfin-sport-uart",
403         .id = 1,
404 };
405 #endif
406
407 #if defined(CONFIG_PATA_PLATFORM) || defined(CONFIG_PATA_PLATFORM_MODULE)
408 #define PATA_INT        55
409
410 static struct pata_platform_info bfin_pata_platform_data = {
411         .ioport_shift = 1,
412         .irq_type = IRQF_TRIGGER_HIGH | IRQF_DISABLED,
413 };
414
415 static struct resource bfin_pata_resources[] = {
416         {
417                 .start = 0x20314020,
418                 .end = 0x2031403F,
419                 .flags = IORESOURCE_MEM,
420         },
421         {
422                 .start = 0x2031401C,
423                 .end = 0x2031401F,
424                 .flags = IORESOURCE_MEM,
425         },
426         {
427                 .start = PATA_INT,
428                 .end = PATA_INT,
429                 .flags = IORESOURCE_IRQ,
430         },
431 };
432
433 static struct platform_device bfin_pata_device = {
434         .name = "pata_platform",
435         .id = -1,
436         .num_resources = ARRAY_SIZE(bfin_pata_resources),
437         .resource = bfin_pata_resources,
438         .dev = {
439                 .platform_data = &bfin_pata_platform_data,
440         }
441 };
442 #endif
443
444 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
445 #include <linux/input.h>
446 #include <linux/gpio_keys.h>
447
448 static struct gpio_keys_button bfin_gpio_keys_table[] = {
449         {BTN_0, GPIO_PF5, 0, "gpio-keys: BTN0"},
450         {BTN_1, GPIO_PF6, 0, "gpio-keys: BTN1"},
451         {BTN_2, GPIO_PF8, 0, "gpio-keys: BTN2"},
452 };
453
454 static struct gpio_keys_platform_data bfin_gpio_keys_data = {
455         .buttons        = bfin_gpio_keys_table,
456         .nbuttons       = ARRAY_SIZE(bfin_gpio_keys_table),
457 };
458
459 static struct platform_device bfin_device_gpiokeys = {
460         .name      = "gpio-keys",
461         .dev = {
462                 .platform_data = &bfin_gpio_keys_data,
463         },
464 };
465 #endif
466
467 static struct resource bfin_gpios_resources = {
468         .start = 0,
469         .end   = MAX_BLACKFIN_GPIOS - 1,
470         .flags = IORESOURCE_IRQ,
471 };
472
473 static struct platform_device bfin_gpios_device = {
474         .name = "simple-gpio",
475         .id = -1,
476         .num_resources = 1,
477         .resource = &bfin_gpios_resources,
478 };
479
480 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
481 #include <linux/i2c-gpio.h>
482
483 static struct i2c_gpio_platform_data i2c_gpio_data = {
484         .sda_pin                = 2,
485         .scl_pin                = 3,
486         .sda_is_open_drain      = 0,
487         .scl_is_open_drain      = 0,
488         .udelay                 = 40,
489 };
490
491 static struct platform_device i2c_gpio_device = {
492         .name           = "i2c-gpio",
493         .id             = 0,
494         .dev            = {
495                 .platform_data  = &i2c_gpio_data,
496         },
497 };
498 #endif
499
500 #ifdef CONFIG_I2C_BOARDINFO
501 static struct i2c_board_info __initdata bfin_i2c_board_info[] = {
502 #if defined(CONFIG_JOYSTICK_AD7142) || defined(CONFIG_JOYSTICK_AD7142_MODULE)
503         {
504                 I2C_BOARD_INFO("ad7142_joystick", 0x2C),
505                 .irq = 39,
506         },
507 #endif
508 #if defined(CONFIG_TWI_LCD) || defined(CONFIG_TWI_LCD_MODULE)
509         {
510                 I2C_BOARD_INFO("pcf8574_lcd", 0x22),
511         },
512 #endif
513 #if defined(CONFIG_TWI_KEYPAD) || defined(CONFIG_TWI_KEYPAD_MODULE)
514         {
515                 I2C_BOARD_INFO("pcf8574_keypad", 0x27),
516                 .irq = 39,
517         },
518 #endif
519 };
520 #endif
521
522 static const unsigned int cclk_vlev_datasheet[] =
523 {
524         VRPAIR(VLEV_085, 250000000),
525         VRPAIR(VLEV_090, 376000000),
526         VRPAIR(VLEV_095, 426000000),
527         VRPAIR(VLEV_100, 426000000),
528         VRPAIR(VLEV_105, 476000000),
529         VRPAIR(VLEV_110, 476000000),
530         VRPAIR(VLEV_115, 476000000),
531         VRPAIR(VLEV_120, 600000000),
532         VRPAIR(VLEV_125, 600000000),
533         VRPAIR(VLEV_130, 600000000),
534 };
535
536 static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
537         .tuple_tab = cclk_vlev_datasheet,
538         .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
539         .vr_settling_time = 25 /* us */,
540 };
541
542 static struct platform_device bfin_dpmc = {
543         .name = "bfin dpmc",
544         .dev = {
545                 .platform_data = &bfin_dmpc_vreg_data,
546         },
547 };
548
549 static struct platform_device *stamp_devices[] __initdata = {
550
551         &bfin_dpmc,
552
553 #if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
554         &rtc_device,
555 #endif
556
557 #if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
558         &smc91x_device,
559 #endif
560
561 #if defined(CONFIG_FB_BFIN_7393) || defined(CONFIG_FB_BFIN_7393_MODULE)
562         &bfin_fb_adv7393_device,
563 #endif
564
565 #if defined(CONFIG_USB_NET2272) || defined(CONFIG_USB_NET2272_MODULE)
566         &net2272_bfin_device,
567 #endif
568
569 #if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
570         &bfin_spi0_device,
571 #endif
572
573 #if defined(CONFIG_SERIAL_BFIN) || defined(CONFIG_SERIAL_BFIN_MODULE)
574         &bfin_uart_device,
575 #endif
576
577 #if defined(CONFIG_BFIN_SIR) || defined(CONFIG_BFIN_SIR_MODULE)
578         &bfin_sir_device,
579 #endif
580
581 #if defined(CONFIG_SERIAL_BFIN_SPORT) || defined(CONFIG_SERIAL_BFIN_SPORT_MODULE)
582         &bfin_sport0_uart_device,
583         &bfin_sport1_uart_device,
584 #endif
585
586 #if defined(CONFIG_PATA_PLATFORM) || defined(CONFIG_PATA_PLATFORM_MODULE)
587         &bfin_pata_device,
588 #endif
589
590 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
591         &bfin_device_gpiokeys,
592 #endif
593
594 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
595         &i2c_gpio_device,
596 #endif
597
598         &bfin_gpios_device,
599
600 #if defined(CONFIG_MTD_BFIN_ASYNC) || defined(CONFIG_MTD_BFIN_ASYNC_MODULE)
601         &stamp_flash_device,
602 #endif
603 };
604
605 static int __init stamp_init(void)
606 {
607         int ret;
608
609         printk(KERN_INFO "%s(): registering device resources\n", __func__);
610
611 #ifdef CONFIG_I2C_BOARDINFO
612         i2c_register_board_info(0, bfin_i2c_board_info,
613                                 ARRAY_SIZE(bfin_i2c_board_info));
614 #endif
615
616         ret = platform_add_devices(stamp_devices, ARRAY_SIZE(stamp_devices));
617         if (ret < 0)
618                 return ret;
619
620 #if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
621         /* setup BF533_STAMP CPLD to route AMS3 to Ethernet MAC */
622         bfin_write_FIO_DIR(bfin_read_FIO_DIR() | PF0);
623         bfin_write_FIO_FLAG_S(PF0);
624         SSYNC();
625 #endif
626
627         spi_register_board_info(bfin_spi_board_info, ARRAY_SIZE(bfin_spi_board_info));
628
629 #if defined(CONFIG_PATA_PLATFORM) || defined(CONFIG_PATA_PLATFORM_MODULE)
630         irq_desc[PATA_INT].status |= IRQ_NOAUTOEN;
631 #endif
632         return 0;
633 }
634
635 arch_initcall(stamp_init);
636
637 void native_machine_restart(char *cmd)
638 {
639         /* workaround pull up on cpld / flash pin not being strong enough */
640         bfin_write_FIO_INEN(~PF0);
641         bfin_write_FIO_DIR(PF0);
642         bfin_write_FIO_FLAG_C(PF0);
643 }