summaryrefslogtreecommitdiff
path: root/board/boundary/nitrogen6x/nitrogen6x.c
blob: 951b820cbba8ab6d4c82150f6224ae7e76434973 (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
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
/*
 * Copyright (C) 2010-2013 Freescale Semiconductor, Inc.
 * Copyright (C) 2013, Boundary Devices <info@boundarydevices.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux.h>
#include <asm/arch/sys_proto.h>
#include <malloc.h>
#include <asm/arch/mx6-pins.h>
#include <asm/errno.h>
#include <asm/gpio.h>
#include <asm/imx-common/iomux-v3.h>
#include <asm/imx-common/mxc_i2c.h>
#include <asm/imx-common/sata.h>
#include <asm/imx-common/boot_mode.h>
#include <asm/imx-common/video.h>
#include <mmc.h>
#include <fsl_esdhc.h>
#include <micrel.h>
#include <miiphy.h>
#include <netdev.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/mxc_hdmi.h>
#include <i2c.h>
#include <input.h>
#include <netdev.h>
#include <usb/ehci-fsl.h>

DECLARE_GLOBAL_DATA_PTR;
#define GP_USB_OTG_PWR	IMX_GPIO_NR(3, 22)

#define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |			\
	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)

#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |			\
	PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |			\
	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)

#define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)

#define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED |		\
	PAD_CTL_DSE_40ohm     | PAD_CTL_SRE_FAST)

#define BUTTON_PAD_CTRL (PAD_CTL_PUS_100K_UP |			\
	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)

#define I2C_PAD_CTRL	(PAD_CTL_PUS_100K_UP |			\
	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |	\
	PAD_CTL_ODE | PAD_CTL_SRE_FAST)

#define WEAK_PULLUP	(PAD_CTL_PUS_100K_UP |			\
	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |	\
	PAD_CTL_SRE_SLOW)

#define WEAK_PULLDOWN	(PAD_CTL_PUS_100K_DOWN |		\
	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |			\
	PAD_CTL_HYS | PAD_CTL_SRE_SLOW)

#define OUTPUT_40OHM (PAD_CTL_SPEED_MED|PAD_CTL_DSE_40ohm)

int dram_init(void)
{
	gd->ram_size = ((ulong)CONFIG_DDR_MB * 1024 * 1024);

	return 0;
}

static iomux_v3_cfg_t const uart1_pads[] = {
	MX6_PAD_SD3_DAT6__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
	MX6_PAD_SD3_DAT7__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
};

static iomux_v3_cfg_t const uart2_pads[] = {
	MX6_PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
	MX6_PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
};

#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)

/* I2C1, SGTL5000 */
static struct i2c_pads_info i2c_pad_info0 = {
	.scl = {
		.i2c_mode = MX6_PAD_EIM_D21__I2C1_SCL | PC,
		.gpio_mode = MX6_PAD_EIM_D21__GPIO3_IO21 | PC,
		.gp = IMX_GPIO_NR(3, 21)
	},
	.sda = {
		.i2c_mode = MX6_PAD_EIM_D28__I2C1_SDA | PC,
		.gpio_mode = MX6_PAD_EIM_D28__GPIO3_IO28 | PC,
		.gp = IMX_GPIO_NR(3, 28)
	}
};

/* I2C2 Camera, MIPI */
static struct i2c_pads_info i2c_pad_info1 = {
	.scl = {
		.i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL | PC,
		.gpio_mode = MX6_PAD_KEY_COL3__GPIO4_IO12 | PC,
		.gp = IMX_GPIO_NR(4, 12)
	},
	.sda = {
		.i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA | PC,
		.gpio_mode = MX6_PAD_KEY_ROW3__GPIO4_IO13 | PC,
		.gp = IMX_GPIO_NR(4, 13)
	}
};

/* I2C3, J15 - RGB connector */
static struct i2c_pads_info i2c_pad_info2 = {
	.scl = {
		.i2c_mode = MX6_PAD_GPIO_5__I2C3_SCL | PC,
		.gpio_mode = MX6_PAD_GPIO_5__GPIO1_IO05 | PC,
		.gp = IMX_GPIO_NR(1, 5)
	},
	.sda = {
		.i2c_mode = MX6_PAD_GPIO_16__I2C3_SDA | PC,
		.gpio_mode = MX6_PAD_GPIO_16__GPIO7_IO11 | PC,
		.gp = IMX_GPIO_NR(7, 11)
	}
};

static iomux_v3_cfg_t const usdhc2_pads[] = {
	MX6_PAD_SD2_CLK__SD2_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD2_CMD__SD2_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
};

static iomux_v3_cfg_t const usdhc3_pads[] = {
	MX6_PAD_SD3_CLK__SD3_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_CMD__SD3_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT5__GPIO7_IO00    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
};

static iomux_v3_cfg_t const usdhc4_pads[] = {
	MX6_PAD_SD4_CLK__SD4_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD4_CMD__SD4_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_NANDF_D6__GPIO2_IO06    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
};

static iomux_v3_cfg_t const enet_pads1[] = {
	MX6_PAD_ENET_MDIO__ENET_MDIO		| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET_MDC__ENET_MDC		| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_TXC__RGMII_TXC	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_TD0__RGMII_TD0	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_TD1__RGMII_TD1	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_TD2__RGMII_TD2	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_TD3__RGMII_TD3	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET_REF_CLK__ENET_TX_CLK	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	/* pin 35 - 1 (PHY_AD2) on reset */
	MX6_PAD_RGMII_RXC__GPIO6_IO30		| MUX_PAD_CTRL(NO_PAD_CTRL),
	/* pin 32 - 1 - (MODE0) all */
	MX6_PAD_RGMII_RD0__GPIO6_IO25		| MUX_PAD_CTRL(NO_PAD_CTRL),
	/* pin 31 - 1 - (MODE1) all */
	MX6_PAD_RGMII_RD1__GPIO6_IO27		| MUX_PAD_CTRL(NO_PAD_CTRL),
	/* pin 28 - 1 - (MODE2) all */
	MX6_PAD_RGMII_RD2__GPIO6_IO28		| MUX_PAD_CTRL(NO_PAD_CTRL),
	/* pin 27 - 1 - (MODE3) all */
	MX6_PAD_RGMII_RD3__GPIO6_IO29		| MUX_PAD_CTRL(NO_PAD_CTRL),
	/* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */
	MX6_PAD_RGMII_RX_CTL__GPIO6_IO24	| MUX_PAD_CTRL(NO_PAD_CTRL),
	/* pin 42 PHY nRST */
	MX6_PAD_EIM_D23__GPIO3_IO23		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_ENET_RXD0__GPIO1_IO27		| MUX_PAD_CTRL(NO_PAD_CTRL),
};

static iomux_v3_cfg_t const enet_pads2[] = {
	MX6_PAD_RGMII_RXC__RGMII_RXC	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_RD0__RGMII_RD0	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_RD1__RGMII_RD1	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_RD2__RGMII_RD2	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_RD3__RGMII_RD3	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL	| MUX_PAD_CTRL(ENET_PAD_CTRL),
};

static iomux_v3_cfg_t const misc_pads[] = {
	MX6_PAD_GPIO_1__USB_OTG_ID		| MUX_PAD_CTRL(WEAK_PULLUP),
	MX6_PAD_KEY_COL4__USB_OTG_OC		| MUX_PAD_CTRL(WEAK_PULLUP),
	MX6_PAD_EIM_D30__USB_H1_OC		| MUX_PAD_CTRL(WEAK_PULLUP),
	/* OTG Power enable */
	MX6_PAD_EIM_D22__GPIO3_IO22		| MUX_PAD_CTRL(OUTPUT_40OHM),
};

/* wl1271 pads on nitrogen6x */
static iomux_v3_cfg_t const wl12xx_pads[] = {
	(MX6_PAD_NANDF_CS1__GPIO6_IO14 & ~MUX_PAD_CTRL_MASK)
		| MUX_PAD_CTRL(WEAK_PULLDOWN),
	(MX6_PAD_NANDF_CS2__GPIO6_IO15 & ~MUX_PAD_CTRL_MASK)
		| MUX_PAD_CTRL(OUTPUT_40OHM),
	(MX6_PAD_NANDF_CS3__GPIO6_IO16 & ~MUX_PAD_CTRL_MASK)
		| MUX_PAD_CTRL(OUTPUT_40OHM),
};
#define WL12XX_WL_IRQ_GP	IMX_GPIO_NR(6, 14)
#define WL12XX_WL_ENABLE_GP	IMX_GPIO_NR(6, 15)
#define WL12XX_BT_ENABLE_GP	IMX_GPIO_NR(6, 16)

/* Button assignments for J14 */
static iomux_v3_cfg_t const button_pads[] = {
	/* Menu */
	MX6_PAD_NANDF_D1__GPIO2_IO01	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
	/* Back */
	MX6_PAD_NANDF_D2__GPIO2_IO02	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
	/* Labelled Search (mapped to Power under Android) */
	MX6_PAD_NANDF_D3__GPIO2_IO03	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
	/* Home */
	MX6_PAD_NANDF_D4__GPIO2_IO04	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
	/* Volume Down */
	MX6_PAD_GPIO_19__GPIO4_IO05	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
	/* Volume Up */
	MX6_PAD_GPIO_18__GPIO7_IO13	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
};

static void setup_iomux_enet(void)
{
	gpio_direction_output(IMX_GPIO_NR(3, 23), 0); /* SABRE Lite PHY rst */
	gpio_direction_output(IMX_GPIO_NR(1, 27), 0); /* Nitrogen6X PHY rst */
	gpio_direction_output(IMX_GPIO_NR(6, 30), 1);
	gpio_direction_output(IMX_GPIO_NR(6, 25), 1);
	gpio_direction_output(IMX_GPIO_NR(6, 27), 1);
	gpio_direction_output(IMX_GPIO_NR(6, 28), 1);
	gpio_direction_output(IMX_GPIO_NR(6, 29), 1);
	imx_iomux_v3_setup_multiple_pads(enet_pads1, ARRAY_SIZE(enet_pads1));
	gpio_direction_output(IMX_GPIO_NR(6, 24), 1);

	/* Need delay 10ms according to KSZ9021 spec */
	udelay(1000 * 10);
	gpio_set_value(IMX_GPIO_NR(3, 23), 1); /* SABRE Lite PHY reset */
	gpio_set_value(IMX_GPIO_NR(1, 27), 1); /* Nitrogen6X PHY reset */

	imx_iomux_v3_setup_multiple_pads(enet_pads2, ARRAY_SIZE(enet_pads2));
	udelay(100);	/* Wait 100 us before using mii interface */
}

static iomux_v3_cfg_t const usb_pads[] = {
	MX6_PAD_GPIO_17__GPIO7_IO12 | MUX_PAD_CTRL(NO_PAD_CTRL),
};

static void setup_iomux_uart(void)
{
	imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
	imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
}

#ifdef CONFIG_USB_EHCI_MX6
int board_ehci_hcd_init(int port)
{
	imx_iomux_v3_setup_multiple_pads(usb_pads, ARRAY_SIZE(usb_pads));

	/* Reset USB hub */
	gpio_direction_output(IMX_GPIO_NR(7, 12), 0);
	mdelay(2);
	gpio_set_value(IMX_GPIO_NR(7, 12), 1);

	return 0;
}

int board_ehci_power(int port, int on)
{
	if (port)
		return 0;
	gpio_set_value(GP_USB_OTG_PWR, on);
	return 0;
}

#endif

#ifdef CONFIG_FSL_ESDHC
static struct fsl_esdhc_cfg usdhc_cfg[2] = {
	{USDHC3_BASE_ADDR},
	{USDHC4_BASE_ADDR},
};

int board_mmc_getcd(struct mmc *mmc)
{
	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
	int gp_cd = (cfg->esdhc_base == USDHC3_BASE_ADDR) ? IMX_GPIO_NR(7, 0) :
			IMX_GPIO_NR(2, 6);

	gpio_direction_input(gp_cd);
	return !gpio_get_value(gp_cd);
}

int board_mmc_init(bd_t *bis)
{
	s32 status = 0;
	u32 index = 0;

	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
	usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);

	usdhc_cfg[0].max_bus_width = 4;
	usdhc_cfg[1].max_bus_width = 4;

	for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
		switch (index) {
		case 0:
			imx_iomux_v3_setup_multiple_pads(
				usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
			break;
		case 1:
		       imx_iomux_v3_setup_multiple_pads(
			       usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
		       break;
		default:
		       printf("Warning: you configured more USDHC controllers"
			       "(%d) then supported by the board (%d)\n",
			       index + 1, CONFIG_SYS_FSL_USDHC_NUM);
		       return status;
		}

		status |= fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
	}

	return status;
}
#endif

#ifdef CONFIG_MXC_SPI
int board_spi_cs_gpio(unsigned bus, unsigned cs)
{
	return (bus == 0 && cs == 0) ? (IMX_GPIO_NR(3, 19)) : -1;
}

static iomux_v3_cfg_t const ecspi1_pads[] = {
	/* SS1 */
	MX6_PAD_EIM_D19__GPIO3_IO19  | MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
	MX6_PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
	MX6_PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
};

static void setup_spi(void)
{
	imx_iomux_v3_setup_multiple_pads(ecspi1_pads,
					 ARRAY_SIZE(ecspi1_pads));
}
#endif

int board_phy_config(struct phy_device *phydev)
{
	/* min rx data delay */
	ksz9021_phy_extended_write(phydev,
			MII_KSZ9021_EXT_RGMII_RX_DATA_SKEW, 0x0);
	/* min tx data delay */
	ksz9021_phy_extended_write(phydev,
			MII_KSZ9021_EXT_RGMII_TX_DATA_SKEW, 0x0);
	/* max rx/tx clock delay, min rx/tx control */
	ksz9021_phy_extended_write(phydev,
			MII_KSZ9021_EXT_RGMII_CLOCK_SKEW, 0xf0f0);
	if (phydev->drv->config)
		phydev->drv->config(phydev);

	return 0;
}

int board_eth_init(bd_t *bis)
{
	uint32_t base = IMX_FEC_BASE;
	struct mii_dev *bus = NULL;
	struct phy_device *phydev = NULL;
	int ret;

	setup_iomux_enet();

#ifdef CONFIG_FEC_MXC
	bus = fec_get_miibus(base, -1);
	if (!bus)
		return 0;
	/* scan phy 4,5,6,7 */
	phydev = phy_find_by_mask(bus, (0xf << 4), PHY_INTERFACE_MODE_RGMII);
	if (!phydev) {
		free(bus);
		return 0;
	}
	printf("using phy at %d\n", phydev->addr);
	ret  = fec_probe(bis, -1, base, bus, phydev);
	if (ret) {
		printf("FEC MXC: %s:failed\n", __func__);
		free(phydev);
		free(bus);
	}
#endif

#ifdef CONFIG_CI_UDC
	/* For otg ethernet*/
	usb_eth_initialize(bis);
#endif
	return 0;
}

static void setup_buttons(void)
{
	imx_iomux_v3_setup_multiple_pads(button_pads,
					 ARRAY_SIZE(button_pads));
}

#if defined(CONFIG_VIDEO_IPUV3)

static iomux_v3_cfg_t const backlight_pads[] = {
	/* Backlight on RGB connector: J15 */
	MX6_PAD_SD1_DAT3__GPIO1_IO21 | MUX_PAD_CTRL(NO_PAD_CTRL),
#define RGB_BACKLIGHT_GP IMX_GPIO_NR(1, 21)

	/* Backlight on LVDS connector: J6 */
	MX6_PAD_SD1_CMD__GPIO1_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL),
#define LVDS_BACKLIGHT_GP IMX_GPIO_NR(1, 18)
};

static iomux_v3_cfg_t const rgb_pads[] = {
	MX6_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK,
	MX6_PAD_DI0_PIN15__IPU1_DI0_PIN15,
	MX6_PAD_DI0_PIN2__IPU1_DI0_PIN02,
	MX6_PAD_DI0_PIN3__IPU1_DI0_PIN03,
	MX6_PAD_DI0_PIN4__GPIO4_IO20,
	MX6_PAD_DISP0_DAT0__IPU1_DISP0_DATA00,
	MX6_PAD_DISP0_DAT1__IPU1_DISP0_DATA01,
	MX6_PAD_DISP0_DAT2__IPU1_DISP0_DATA02,
	MX6_PAD_DISP0_DAT3__IPU1_DISP0_DATA03,
	MX6_PAD_DISP0_DAT4__IPU1_DISP0_DATA04,
	MX6_PAD_DISP0_DAT5__IPU1_DISP0_DATA05,
	MX6_PAD_DISP0_DAT6__IPU1_DISP0_DATA06,
	MX6_PAD_DISP0_DAT7__IPU1_DISP0_DATA07,
	MX6_PAD_DISP0_DAT8__IPU1_DISP0_DATA08,
	MX6_PAD_DISP0_DAT9__IPU1_DISP0_DATA09,
	MX6_PAD_DISP0_DAT10__IPU1_DISP0_DATA10,
	MX6_PAD_DISP0_DAT11__IPU1_DISP0_DATA11,
	MX6_PAD_DISP0_DAT12__IPU1_DISP0_DATA12,
	MX6_PAD_DISP0_DAT13__IPU1_DISP0_DATA13,
	MX6_PAD_DISP0_DAT14__IPU1_DISP0_DATA14,
	MX6_PAD_DISP0_DAT15__IPU1_DISP0_DATA15,
	MX6_PAD_DISP0_DAT16__IPU1_DISP0_DATA16,
	MX6_PAD_DISP0_DAT17__IPU1_DISP0_DATA17,
	MX6_PAD_DISP0_DAT18__IPU1_DISP0_DATA18,
	MX6_PAD_DISP0_DAT19__IPU1_DISP0_DATA19,
	MX6_PAD_DISP0_DAT20__IPU1_DISP0_DATA20,
	MX6_PAD_DISP0_DAT21__IPU1_DISP0_DATA21,
	MX6_PAD_DISP0_DAT22__IPU1_DISP0_DATA22,
	MX6_PAD_DISP0_DAT23__IPU1_DISP0_DATA23,
};

static void do_enable_hdmi(struct display_info_t const *dev)
{
	imx_enable_hdmi_phy();
}

static int detect_i2c(struct display_info_t const *dev)
{
	return ((0 == i2c_set_bus_num(dev->bus))
		&&
		(0 == i2c_probe(dev->addr)));
}

static void enable_lvds(struct display_info_t const *dev)
{
	struct iomuxc *iomux = (struct iomuxc *)
				IOMUXC_BASE_ADDR;
	u32 reg = readl(&iomux->gpr[2]);
	reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT;
	writel(reg, &iomux->gpr[2]);
	gpio_direction_output(LVDS_BACKLIGHT_GP, 1);
}

static void enable_lvds_jeida(struct display_info_t const *dev)
{
	struct iomuxc *iomux = (struct iomuxc *)
				IOMUXC_BASE_ADDR;
	u32 reg = readl(&iomux->gpr[2]);
	reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT
	     |IOMUXC_GPR2_BIT_MAPPING_CH0_JEIDA;
	writel(reg, &iomux->gpr[2]);
	gpio_direction_output(LVDS_BACKLIGHT_GP, 1);
}

static void enable_rgb(struct display_info_t const *dev)
{
	imx_iomux_v3_setup_multiple_pads(
		rgb_pads,
		 ARRAY_SIZE(rgb_pads));
	gpio_direction_output(RGB_BACKLIGHT_GP, 1);
}

struct display_info_t const displays[] = {{
	.bus	= 1,
	.addr	= 0x50,
	.pixfmt	= IPU_PIX_FMT_RGB24,
	.detect	= detect_i2c,
	.enable	= do_enable_hdmi,
	.mode	= {
		.name           = "HDMI",
		.refresh        = 60,
		.xres           = 1024,
		.yres           = 768,
		.pixclock       = 15385,
		.left_margin    = 220,
		.right_margin   = 40,
		.upper_margin   = 21,
		.lower_margin   = 7,
		.hsync_len      = 60,
		.vsync_len      = 10,
		.sync           = FB_SYNC_EXT,
		.vmode          = FB_VMODE_NONINTERLACED
} }, {
	.bus	= 0,
	.addr	= 0,
	.pixfmt	= IPU_PIX_FMT_RGB24,
	.detect	= NULL,
	.enable	= enable_lvds_jeida,
	.mode	= {
		.name           = "LDB-WXGA",
		.refresh        = 60,
		.xres           = 1280,
		.yres           = 800,
		.pixclock       = 14065,
		.left_margin    = 40,
		.right_margin   = 40,
		.upper_margin   = 3,
		.lower_margin   = 80,
		.hsync_len      = 10,
		.vsync_len      = 10,
		.sync           = FB_SYNC_EXT,
		.vmode          = FB_VMODE_NONINTERLACED
} }, {
	.bus	= 0,
	.addr	= 0,
	.pixfmt	= IPU_PIX_FMT_RGB24,
	.detect	= NULL,
	.enable	= enable_lvds,
	.mode	= {
		.name           = "LDB-WXGA-S",
		.refresh        = 60,
		.xres           = 1280,
		.yres           = 800,
		.pixclock       = 14065,
		.left_margin    = 40,
		.right_margin   = 40,
		.upper_margin   = 3,
		.lower_margin   = 80,
		.hsync_len      = 10,
		.vsync_len      = 10,
		.sync           = FB_SYNC_EXT,
		.vmode          = FB_VMODE_NONINTERLACED
} }, {
	.bus	= 2,
	.addr	= 0x4,
	.pixfmt	= IPU_PIX_FMT_LVDS666,
	.detect	= detect_i2c,
	.enable	= enable_lvds,
	.mode	= {
		.name           = "Hannstar-XGA",
		.refresh        = 60,
		.xres           = 1024,
		.yres           = 768,
		.pixclock       = 15385,
		.left_margin    = 220,
		.right_margin   = 40,
		.upper_margin   = 21,
		.lower_margin   = 7,
		.hsync_len      = 60,
		.vsync_len      = 10,
		.sync           = FB_SYNC_EXT,
		.vmode          = FB_VMODE_NONINTERLACED
} }, {
	.bus	= 0,
	.addr	= 0,
	.pixfmt	= IPU_PIX_FMT_LVDS666,
	.detect	= NULL,
	.enable	= enable_lvds,
	.mode	= {
		.name           = "LG-9.7",
		.refresh        = 60,
		.xres           = 1024,
		.yres           = 768,
		.pixclock       = 15385, /* ~65MHz */
		.left_margin    = 480,
		.right_margin   = 260,
		.upper_margin   = 16,
		.lower_margin   = 6,
		.hsync_len      = 250,
		.vsync_len      = 10,
		.sync           = FB_SYNC_EXT,
		.vmode          = FB_VMODE_NONINTERLACED
} }, {
	.bus	= 2,
	.addr	= 0x38,
	.pixfmt	= IPU_PIX_FMT_LVDS666,
	.detect	= detect_i2c,
	.enable	= enable_lvds,
	.mode	= {
		.name           = "wsvga-lvds",
		.refresh        = 60,
		.xres           = 1024,
		.yres           = 600,
		.pixclock       = 15385,
		.left_margin    = 220,
		.right_margin   = 40,
		.upper_margin   = 21,
		.lower_margin   = 7,
		.hsync_len      = 60,
		.vsync_len      = 10,
		.sync           = FB_SYNC_EXT,
		.vmode          = FB_VMODE_NONINTERLACED
} }, {
	.bus	= 2,
	.addr	= 0x10,
	.pixfmt	= IPU_PIX_FMT_RGB666,
	.detect	= detect_i2c,
	.enable	= enable_rgb,
	.mode	= {
		.name           = "fusion7",
		.refresh        = 60,
		.xres           = 800,
		.yres           = 480,
		.pixclock       = 33898,
		.left_margin    = 96,
		.right_margin   = 24,
		.upper_margin   = 3,
		.lower_margin   = 10,
		.hsync_len      = 72,
		.vsync_len      = 7,
		.sync           = 0x40000002,
		.vmode          = FB_VMODE_NONINTERLACED
} }, {
	.bus	= 0,
	.addr	= 0,
	.pixfmt	= IPU_PIX_FMT_RGB666,
	.detect	= NULL,
	.enable	= enable_rgb,
	.mode	= {
		.name           = "svga",
		.refresh        = 60,
		.xres           = 800,
		.yres           = 600,
		.pixclock       = 15385,
		.left_margin    = 220,
		.right_margin   = 40,
		.upper_margin   = 21,
		.lower_margin   = 7,
		.hsync_len      = 60,
		.vsync_len      = 10,
		.sync           = 0,
		.vmode          = FB_VMODE_NONINTERLACED
} }, {
	.bus	= 2,
	.addr	= 0x41,
	.pixfmt	= IPU_PIX_FMT_LVDS666,
	.detect	= detect_i2c,
	.enable	= enable_lvds,
	.mode	= {
		.name           = "amp1024x600",
		.refresh        = 60,
		.xres           = 1024,
		.yres           = 600,
		.pixclock       = 15385,
		.left_margin    = 220,
		.right_margin   = 40,
		.upper_margin   = 21,
		.lower_margin   = 7,
		.hsync_len      = 60,
		.vsync_len      = 10,
		.sync           = FB_SYNC_EXT,
		.vmode          = FB_VMODE_NONINTERLACED
} }, {
	.bus	= 0,
	.addr	= 0,
	.pixfmt	= IPU_PIX_FMT_LVDS666,
	.detect	= 0,
	.enable	= enable_lvds,
	.mode	= {
		.name           = "wvga-lvds",
		.refresh        = 57,
		.xres           = 800,
		.yres           = 480,
		.pixclock       = 15385,
		.left_margin    = 220,
		.right_margin   = 40,
		.upper_margin   = 21,
		.lower_margin   = 7,
		.hsync_len      = 60,
		.vsync_len      = 10,
		.sync           = FB_SYNC_EXT,
		.vmode          = FB_VMODE_NONINTERLACED
} }, {
	.bus	= 2,
	.addr	= 0x48,
	.pixfmt	= IPU_PIX_FMT_RGB666,
	.detect	= detect_i2c,
	.enable	= enable_rgb,
	.mode	= {
		.name           = "wvga-rgb",
		.refresh        = 57,
		.xres           = 800,
		.yres           = 480,
		.pixclock       = 37037,
		.left_margin    = 40,
		.right_margin   = 60,
		.upper_margin   = 10,
		.lower_margin   = 10,
		.hsync_len      = 20,
		.vsync_len      = 10,
		.sync           = 0,
		.vmode          = FB_VMODE_NONINTERLACED
} }, {
	.bus	= 0,
	.addr	= 0,
	.pixfmt	= IPU_PIX_FMT_RGB24,
	.detect	= NULL,
	.enable	= enable_rgb,
	.mode	= {
		.name           = "qvga",
		.refresh        = 60,
		.xres           = 320,
		.yres           = 240,
		.pixclock       = 37037,
		.left_margin    = 38,
		.right_margin   = 37,
		.upper_margin   = 16,
		.lower_margin   = 15,
		.hsync_len      = 30,
		.vsync_len      = 3,
		.sync           = 0,
		.vmode          = FB_VMODE_NONINTERLACED
} } };
size_t display_count = ARRAY_SIZE(displays);

int board_cfb_skip(void)
{
	return NULL != getenv("novideo");
}

static void setup_display(void)
{
	struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
	int reg;

	enable_ipu_clock();
	imx_setup_hdmi();
	/* Turn on LDB0,IPU,IPU DI0 clocks */
	reg = __raw_readl(&mxc_ccm->CCGR3);
	reg |=  MXC_CCM_CCGR3_LDB_DI0_MASK;
	writel(reg, &mxc_ccm->CCGR3);

	/* set LDB0, LDB1 clk select to 011/011 */
	reg = readl(&mxc_ccm->cs2cdr);
	reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
		 |MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
	reg |= (3<<MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET)
	      |(3<<MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
	writel(reg, &mxc_ccm->cs2cdr);

	reg = readl(&mxc_ccm->cscmr2);
	reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV;
	writel(reg, &mxc_ccm->cscmr2);

	reg = readl(&mxc_ccm->chsccdr);
	reg |= (CHSCCDR_CLK_SEL_LDB_DI0
		<<MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
	writel(reg, &mxc_ccm->chsccdr);

	reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
	     |IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH
	     |IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
	     |IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG
	     |IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT
	     |IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
	     |IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT
	     |IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
	     |IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
	writel(reg, &iomux->gpr[2]);

	reg = readl(&iomux->gpr[3]);
	reg = (reg & ~(IOMUXC_GPR3_LVDS0_MUX_CTL_MASK
			|IOMUXC_GPR3_HDMI_MUX_CTL_MASK))
	    | (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
	       <<IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
	writel(reg, &iomux->gpr[3]);

	/* backlights off until needed */
	imx_iomux_v3_setup_multiple_pads(backlight_pads,
					 ARRAY_SIZE(backlight_pads));
	gpio_direction_input(LVDS_BACKLIGHT_GP);
	gpio_direction_input(RGB_BACKLIGHT_GP);
}
#endif

static iomux_v3_cfg_t const init_pads[] = {
	/* SGTL5000 sys_mclk */
	NEW_PAD_CTRL(MX6_PAD_GPIO_0__CCM_CLKO1, OUTPUT_40OHM),

	/* J5 - Camera MCLK */
	NEW_PAD_CTRL(MX6_PAD_GPIO_3__CCM_CLKO2, OUTPUT_40OHM),

	/* wl1271 pads on nitrogen6x */
	/* WL12XX_WL_IRQ_GP */
	NEW_PAD_CTRL(MX6_PAD_NANDF_CS1__GPIO6_IO14, WEAK_PULLDOWN),
	/* WL12XX_WL_ENABLE_GP */
	NEW_PAD_CTRL(MX6_PAD_NANDF_CS2__GPIO6_IO15, OUTPUT_40OHM),
	/* WL12XX_BT_ENABLE_GP */
	NEW_PAD_CTRL(MX6_PAD_NANDF_CS3__GPIO6_IO16, OUTPUT_40OHM),
	/* USB otg power */
	NEW_PAD_CTRL(MX6_PAD_EIM_D22__GPIO3_IO22, OUTPUT_40OHM),
	NEW_PAD_CTRL(MX6_PAD_NANDF_D5__GPIO2_IO05, OUTPUT_40OHM),
	NEW_PAD_CTRL(MX6_PAD_NANDF_WP_B__GPIO6_IO09, OUTPUT_40OHM),
	NEW_PAD_CTRL(MX6_PAD_GPIO_8__GPIO1_IO08, OUTPUT_40OHM),
	NEW_PAD_CTRL(MX6_PAD_GPIO_6__GPIO1_IO06, OUTPUT_40OHM),
};

#define WL12XX_WL_IRQ_GP	IMX_GPIO_NR(6, 14)

static unsigned gpios_out_low[] = {
	/* Disable wl1271 */
	IMX_GPIO_NR(6, 15),	/* disable wireless */
	IMX_GPIO_NR(6, 16),	/* disable bluetooth */
	IMX_GPIO_NR(3, 22),	/* disable USB otg power */
	IMX_GPIO_NR(2, 5),	/* ov5640 mipi camera reset */
	IMX_GPIO_NR(1, 8),	/* ov5642 reset */
};

static unsigned gpios_out_high[] = {
	IMX_GPIO_NR(1, 6),	/* ov5642 powerdown */
	IMX_GPIO_NR(6, 9),	/* ov5640 mipi camera power down */
};

static void set_gpios(unsigned *p, int cnt, int val)
{
	int i;

	for (i = 0; i < cnt; i++)
		gpio_direction_output(*p++, val);
}

int board_early_init_f(void)
{
	setup_iomux_uart();

	set_gpios(gpios_out_high, ARRAY_SIZE(gpios_out_high), 1);
	set_gpios(gpios_out_low, ARRAY_SIZE(gpios_out_low), 0);
	gpio_direction_input(WL12XX_WL_IRQ_GP);

	imx_iomux_v3_setup_multiple_pads(wl12xx_pads, ARRAY_SIZE(wl12xx_pads));
	imx_iomux_v3_setup_multiple_pads(init_pads, ARRAY_SIZE(init_pads));
	setup_buttons();

#if defined(CONFIG_VIDEO_IPUV3)
	setup_display();
#endif
	return 0;
}

/*
 * Do not overwrite the console
 * Use always serial for U-Boot console
 */
int overwrite_console(void)
{
	return 1;
}

int board_init(void)
{
	struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;

	clrsetbits_le32(&iomuxc_regs->gpr[1],
			IOMUXC_GPR1_OTG_ID_MASK,
			IOMUXC_GPR1_OTG_ID_GPIO1);

	imx_iomux_v3_setup_multiple_pads(misc_pads, ARRAY_SIZE(misc_pads));

	/* address of boot parameters */
	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;

#ifdef CONFIG_MXC_SPI
	setup_spi();
#endif
	imx_iomux_v3_setup_multiple_pads(
		usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
	setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info0);
	setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
	setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);

#ifdef CONFIG_CMD_SATA
	setup_sata();
#endif

	return 0;
}

int checkboard(void)
{
	if (gpio_get_value(WL12XX_WL_IRQ_GP))
		puts("Board: Nitrogen6X\n");
	else
		puts("Board: SABRE Lite\n");

	return 0;
}

struct button_key {
	char const	*name;
	unsigned	gpnum;
	char		ident;
};

static struct button_key const buttons[] = {
	{"back",	IMX_GPIO_NR(2, 2),	'B'},
	{"home",	IMX_GPIO_NR(2, 4),	'H'},
	{"menu",	IMX_GPIO_NR(2, 1),	'M'},
	{"search",	IMX_GPIO_NR(2, 3),	'S'},
	{"volup",	IMX_GPIO_NR(7, 13),	'V'},
	{"voldown",	IMX_GPIO_NR(4, 5),	'v'},
};

/*
 * generate a null-terminated string containing the buttons pressed
 * returns number of keys pressed
 */
static int read_keys(char *buf)
{
	int i, numpressed = 0;
	for (i = 0; i < ARRAY_SIZE(buttons); i++) {
		if (!gpio_get_value(buttons[i].gpnum))
			buf[numpressed++] = buttons[i].ident;
	}
	buf[numpressed] = '\0';
	return numpressed;
}

static int do_kbd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	char envvalue[ARRAY_SIZE(buttons)+1];
	int numpressed = read_keys(envvalue);
	setenv("keybd", envvalue);
	return numpressed == 0;
}

U_BOOT_CMD(
	kbd, 1, 1, do_kbd,
	"Tests for keypresses, sets 'keybd' environment variable",
	"Returns 0 (true) to shell if key is pressed."
);

#ifdef CONFIG_PREBOOT
static char const kbd_magic_prefix[] = "key_magic";
static char const kbd_command_prefix[] = "key_cmd";

static void preboot_keys(void)
{
	int numpressed;
	char keypress[ARRAY_SIZE(buttons)+1];
	numpressed = read_keys(keypress);
	if (numpressed) {
		char *kbd_magic_keys = getenv("magic_keys");
		char *suffix;
		/*
		 * loop over all magic keys
		 */
		for (suffix = kbd_magic_keys; *suffix; ++suffix) {
			char *keys;
			char magic[sizeof(kbd_magic_prefix) + 1];
			sprintf(magic, "%s%c", kbd_magic_prefix, *suffix);
			keys = getenv(magic);
			if (keys) {
				if (!strcmp(keys, keypress))
					break;
			}
		}
		if (*suffix) {
			char cmd_name[sizeof(kbd_command_prefix) + 1];
			char *cmd;
			sprintf(cmd_name, "%s%c", kbd_command_prefix, *suffix);
			cmd = getenv(cmd_name);
			if (cmd) {
				setenv("preboot", cmd);
				return;
			}
		}
	}
}
#endif

#ifdef CONFIG_CMD_BMODE
static const struct boot_mode board_boot_modes[] = {
	/* 4 bit bus width */
	{"mmc0",	MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
	{"mmc1",	MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},
	{NULL,		0},
};
#endif

int misc_init_r(void)
{
#ifdef CONFIG_PREBOOT
	preboot_keys();
#endif

#ifdef CONFIG_CMD_BMODE
	add_board_boot_modes(board_boot_modes);
#endif
	return 0;
}