summaryrefslogtreecommitdiff
path: root/board/renesas/sh7753evb/lowlevel_init.S
blob: 21987a51e8995f0ac036bcdb94435d5d372f291c (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
/*
 * Copyright (C) 2013  Renesas Solutions Corp.
 *
 * SPDX-License-Identifier:    GPL-2.0+
 */

#include <config.h>
#include <version.h>
#include <asm/processor.h>
#include <asm/macro.h>

.macro	or32, addr, data
	mov.l \addr, r1
	mov.l \data, r0
	mov.l @r1, r2
	or    r2, r0
	mov.l r0, @r1
.endm

.macro	wait_DBCMD
	mov.l	DBWAIT_A, r0
	mov.l	@r0, r1
.endm

	.global lowlevel_init
	.section	.spiboot1.text
	.align  2

lowlevel_init:
	mov	#0, r14
	mova	2f, r0
	mov.l	PC_MASK, r1
	tst	r0, r1
	bf	2f

	bra	exit_pmb
	nop

	.align	2

/* If CPU runs on SDRAM (PC=0x5???????) or not. */
PC_MASK:	.long	0x20000000

2:
	mov	#1, r14

	mov.l	EXPEVT_A, r0
	mov.l	@r0, r0
	mov.l	EXPEVT_POWER_ON_RESET, r1
	cmp/eq	r0, r1
	bt	1f

	/*
	 * If EXPEVT value is manual reset or tlb multipul-hit,
	 * initialization of DBSC3 is not necessary.
	 */
	bra	exit_ddr
	nop

1:
	/*------- Reset -------*/
	write32 MRSTCR0_A, MRSTCR0_D
	write32 MRSTCR1_A, MRSTCR1_D

	/* For Core Reset */
	mov.l	DBACEN_A, r0
	mov.l	@r0, r0
	cmp/eq	#0, r0
	bt	3f

	/*
	 * If DBACEN == 1(DBSC was already enabled), we have to avoid the
	 * initialization of DDR3-SDRAM.
	 */
	bra	exit_ddr
	nop

3:
	/*------- DBSC3 -------*/
	/* oscillation stabilization time */
	wait_timer	WAIT_OSC_TIME

	/* step 3 */
	write32 DBKIND_A, DBKIND_D

	/* step 4 */
	write32 DBCONF_A, DBCONF_D
	write32 DBTR0_A, DBTR0_D
	write32 DBTR1_A, DBTR1_D
	write32 DBTR2_A, DBTR2_D
	write32 DBTR3_A, DBTR3_D
	write32 DBTR4_A, DBTR4_D
	write32 DBTR5_A, DBTR5_D
	write32 DBTR6_A, DBTR6_D
	write32 DBTR7_A, DBTR7_D
	write32 DBTR8_A, DBTR8_D
	write32 DBTR9_A, DBTR9_D
	write32 DBTR10_A, DBTR10_D
	write32 DBTR11_A, DBTR11_D
	write32 DBTR12_A, DBTR12_D
	write32 DBTR13_A, DBTR13_D
	write32 DBTR14_A, DBTR14_D
	write32 DBTR15_A, DBTR15_D
	write32 DBTR16_A, DBTR16_D
	write32 DBTR17_A, DBTR17_D
	write32 DBTR18_A, DBTR18_D
	write32 DBTR19_A, DBTR19_D
	write32 DBRNK0_A, DBRNK0_D
	write32 DBADJ0_A, DBADJ0_D
	write32 DBADJ2_A, DBADJ2_D

	/* step 5 */
	write32 DBCMD_A, DBCMD_RSTL_VAL
	wait_timer	WAIT_30US

	/* step 6 */
	write32 DBCMD_A, DBCMD_PDEN_VAL

	/* step 7 */
	write32 DBPDCNT3_A, DBPDCNT3_D

	/* step 8 */
	write32 DBPDCNT1_A, DBPDCNT1_D
	write32 DBPDCNT2_A, DBPDCNT2_D
	write32 DBPDLCK_A, DBPDLCK_D
	write32 DBPDRGA_A, DBPDRGA_D
	write32 DBPDRGD_A, DBPDRGD_D

	/* step 9 */
	wait_timer	WAIT_30US

	/* step 10 */
	write32 DBPDCNT0_A, DBPDCNT0_D

	/* step 11 */
	wait_timer	WAIT_30US
	wait_timer	WAIT_30US

	/* step 12 */
	write32 DBCMD_A, DBCMD_WAIT_VAL
	wait_DBCMD

	/* step 13 */
	write32 DBCMD_A, DBCMD_RSTH_VAL
	wait_DBCMD

	/* step 14 */
	write32 DBCMD_A, DBCMD_WAIT_VAL
	write32 DBCMD_A, DBCMD_WAIT_VAL
	write32 DBCMD_A, DBCMD_WAIT_VAL
	write32 DBCMD_A, DBCMD_WAIT_VAL

	/* step 15 */
	write32 DBCMD_A, DBCMD_PDXT_VAL

	/* step 16 */
	write32 DBCMD_A, DBCMD_MRS2_VAL

	/* step 17 */
	write32 DBCMD_A, DBCMD_MRS3_VAL

	/* step 18 */
	write32 DBCMD_A, DBCMD_MRS1_VAL

	/* step 19 */
	write32 DBCMD_A, DBCMD_MRS0_VAL
	write32 DBPDNCNF_A, DBPDNCNF_D

	/* step 20 */
	write32 DBCMD_A, DBCMD_ZQCL_VAL

	write32 DBCMD_A, DBCMD_REF_VAL
	write32 DBCMD_A, DBCMD_REF_VAL
	wait_DBCMD

	/* step 21 */
	write32	DBCALTR_A, DBCALTR_D

	/* step 22 */
	write32 DBRFCNF0_A, DBRFCNF0_D
	write32 DBRFCNF1_A, DBRFCNF1_D
	write32 DBRFCNF2_A, DBRFCNF2_D

	/* step 23 */
	write32 DBCALCNF_A, DBCALCNF_D

	/* step 24 */
	write32 DBRFEN_A, DBRFEN_D
	write32 DBCMD_A, DBCMD_SRXT_VAL

	/* step 25 */
	write32 DBACEN_A, DBACEN_D

	/* step 26 */
	wait_DBCMD

	bra	exit_ddr
	nop

	.align 2

EXPEVT_A:		.long	0xff000024
EXPEVT_POWER_ON_RESET:	.long	0x00000000

/*------- Reset -------*/
MRSTCR0_A:	.long	0xffd50030
MRSTCR0_D:	.long	0xfe1ffe7f
MRSTCR1_A:	.long	0xffd50034
MRSTCR1_D:	.long	0xfff3ffff

/*------- DBSC3 -------*/
DBCMD_A:	.long	0xfe800018
DBKIND_A:	.long	0xfe800020
DBCONF_A:	.long	0xfe800024
DBTR0_A:	.long	0xfe800040
DBTR1_A:	.long	0xfe800044
DBTR2_A:	.long	0xfe800048
DBTR3_A:	.long	0xfe800050
DBTR4_A:	.long	0xfe800054
DBTR5_A:	.long	0xfe800058
DBTR6_A:	.long	0xfe80005c
DBTR7_A:	.long	0xfe800060
DBTR8_A:	.long	0xfe800064
DBTR9_A:	.long	0xfe800068
DBTR10_A:	.long	0xfe80006c
DBTR11_A:	.long	0xfe800070
DBTR12_A:	.long	0xfe800074
DBTR13_A:	.long	0xfe800078
DBTR14_A:	.long	0xfe80007c
DBTR15_A:	.long	0xfe800080
DBTR16_A:	.long	0xfe800084
DBTR17_A:	.long	0xfe800088
DBTR18_A:	.long	0xfe80008c
DBTR19_A:	.long	0xfe800090
DBRNK0_A:	.long	0xfe800100
DBPDCNT0_A:	.long	0xfe800200
DBPDCNT1_A:	.long	0xfe800204
DBPDCNT2_A:	.long	0xfe800208
DBPDCNT3_A:	.long	0xfe80020c
DBPDLCK_A:	.long	0xfe800280
DBPDRGA_A:	.long	0xfe800290
DBPDRGD_A:	.long	0xfe8002a0
DBADJ0_A:	.long	0xfe8000c0
DBADJ2_A:	.long	0xfe8000c8
DBRFCNF0_A:	.long	0xfe8000e0
DBRFCNF1_A:	.long	0xfe8000e4
DBRFCNF2_A:	.long	0xfe8000e8
DBCALCNF_A:	.long	0xfe8000f4
DBRFEN_A:	.long	0xfe800014
DBACEN_A:	.long	0xfe800010
DBWAIT_A:	.long	0xfe80001c
DBCALTR_A:	.long	0xfe8000f8
DBPDNCNF_A:	.long	0xfe800180

WAIT_OSC_TIME:	.long	6000
WAIT_30US:	.long	13333

DBCMD_RSTL_VAL:	.long	0x20000000
DBCMD_PDEN_VAL:	.long	0x1000d73c
DBCMD_WAIT_VAL:	.long	0x0000d73c
DBCMD_RSTH_VAL:	.long	0x2100d73c
DBCMD_PDXT_VAL:	.long	0x110000c8
DBCMD_MRS0_VAL:	.long	0x28000930
DBCMD_MRS1_VAL:	.long	0x29000004
DBCMD_MRS2_VAL:	.long	0x2a000008
DBCMD_MRS3_VAL:	.long	0x2b000000
DBCMD_ZQCL_VAL:	.long	0x03000200
DBCMD_REF_VAL:	.long	0x0c000000
DBCMD_SRXT_VAL:	.long	0x19000000
DBKIND_D:	.long	0x00000007
DBCONF_D:	.long	0x0f030a01
DBTR0_D:	.long	0x00000007
DBTR1_D:	.long	0x00000006
DBTR2_D:	.long	0x00000000
DBTR3_D:	.long	0x00000007
DBTR4_D:	.long	0x00070007
DBTR5_D:	.long	0x0000001b
DBTR6_D:	.long	0x00000014
DBTR7_D:	.long	0x00000004
DBTR8_D:	.long	0x00000014
DBTR9_D:	.long	0x00000004
DBTR10_D:	.long	0x00000008
DBTR11_D:	.long	0x00000007
DBTR12_D:	.long	0x0000000e
DBTR13_D:	.long	0x000000a0
DBTR14_D:	.long	0x00060006
DBTR15_D:	.long	0x00000003
DBTR16_D:	.long	0x00160002
DBTR17_D:	.long	0x000c0000
DBTR18_D:	.long	0x00000200
DBTR19_D:	.long	0x00000040
DBRNK0_D:	.long	0x00000001
DBPDCNT0_D:	.long	0x00000001
DBPDCNT1_D:	.long	0x00000001
DBPDCNT2_D:	.long	0x00000000
DBPDCNT3_D:	.long	0x00004010
DBPDLCK_D:	.long	0x0000a55a
DBPDRGA_D:	.long	0x00000028
DBPDRGD_D:	.long	0x00017100

DBADJ0_D:	.long	0x00010000
DBADJ2_D:	.long	0x18061806
DBRFCNF0_D:	.long	0x000001ff
DBRFCNF1_D:	.long	0x00081040
DBRFCNF2_D:	.long	0x00000000
DBCALCNF_D:	.long	0x0000ffff
DBRFEN_D:	.long	0x00000001
DBACEN_D:	.long	0x00000001
DBCALTR_D:	.long	0x08200820
DBPDNCNF_D:	.long	0x00000001

	.align 2
exit_ddr:
#if defined(CONFIG_SH_32BIT)
	/*------- set PMB -------*/
	write32	PASCR_A,	PASCR_29BIT_D
	write32	MMUCR_A,	MMUCR_D

	/*****************************************************************
	 * ent	virt		phys		v	sz	c	wt
	 * 0	0xa0000000	0x00000000	1	128M	0	1
	 * 1	0xa8000000	0x48000000	1	128M	0	1
	 * 5	0x88000000	0x48000000	1	128M	1	1
	 */
	write32	PMB_ADDR_SPIBOOT_A,	PMB_ADDR_SPIBOOT_D
	write32	PMB_DATA_SPIBOOT_A,	PMB_DATA_SPIBOOT_D
	write32	PMB_ADDR_DDR_C1_A,	PMB_ADDR_DDR_C1_D
	write32	PMB_DATA_DDR_C1_A,	PMB_DATA_DDR_C1_D
	write32	PMB_ADDR_DDR_N1_A,	PMB_ADDR_DDR_N1_D
	write32	PMB_DATA_DDR_N1_A,	PMB_DATA_DDR_N1_D

	write32	PMB_ADDR_ENTRY2,	PMB_ADDR_NOT_USE_D
	write32	PMB_ADDR_ENTRY3,	PMB_ADDR_NOT_USE_D
	write32	PMB_ADDR_ENTRY4,	PMB_ADDR_NOT_USE_D
	write32	PMB_ADDR_ENTRY6,	PMB_ADDR_NOT_USE_D
	write32	PMB_ADDR_ENTRY7,	PMB_ADDR_NOT_USE_D
	write32	PMB_ADDR_ENTRY8,	PMB_ADDR_NOT_USE_D
	write32	PMB_ADDR_ENTRY9,	PMB_ADDR_NOT_USE_D
	write32	PMB_ADDR_ENTRY10,	PMB_ADDR_NOT_USE_D
	write32	PMB_ADDR_ENTRY11,	PMB_ADDR_NOT_USE_D
	write32	PMB_ADDR_ENTRY12,	PMB_ADDR_NOT_USE_D
	write32	PMB_ADDR_ENTRY13,	PMB_ADDR_NOT_USE_D
	write32	PMB_ADDR_ENTRY14,	PMB_ADDR_NOT_USE_D
	write32	PMB_ADDR_ENTRY15,	PMB_ADDR_NOT_USE_D

	write32	PASCR_A,	PASCR_INIT
	mov.l	DUMMY_ADDR, r0
	icbi	@r0
#endif	/* if defined(CONFIG_SH_32BIT) */

exit_pmb:
	/* CPU is running on ILRAM? */
	mov	r14, r0
	tst	#1, r0
	bt	1f

	mov.l	_stack_ilram, r15
	mov.l	_spiboot_main, r0
100:	bsrf	r0
	nop

	.align	2
_spiboot_main:	.long	(spiboot_main - (100b + 4))
_stack_ilram:	.long	0xe5204000

1:
	write32	CCR_A,	CCR_D

	rts
	 nop

	.align 2

#if defined(CONFIG_SH_32BIT)
/*------- set PMB -------*/
PMB_ADDR_SPIBOOT_A:	.long	PMB_ADDR_BASE(0)
PMB_ADDR_DDR_N1_A:	.long	PMB_ADDR_BASE(1)
PMB_ADDR_DDR_C1_A:	.long	PMB_ADDR_BASE(5)
PMB_ADDR_ENTRY2:	.long	PMB_ADDR_BASE(2)
PMB_ADDR_ENTRY3:	.long	PMB_ADDR_BASE(3)
PMB_ADDR_ENTRY4:	.long	PMB_ADDR_BASE(4)
PMB_ADDR_ENTRY6:	.long	PMB_ADDR_BASE(6)
PMB_ADDR_ENTRY7:	.long	PMB_ADDR_BASE(7)
PMB_ADDR_ENTRY8:	.long	PMB_ADDR_BASE(8)
PMB_ADDR_ENTRY9:	.long	PMB_ADDR_BASE(9)
PMB_ADDR_ENTRY10:	.long	PMB_ADDR_BASE(10)
PMB_ADDR_ENTRY11:	.long	PMB_ADDR_BASE(11)
PMB_ADDR_ENTRY12:	.long	PMB_ADDR_BASE(12)
PMB_ADDR_ENTRY13:	.long	PMB_ADDR_BASE(13)
PMB_ADDR_ENTRY14:	.long	PMB_ADDR_BASE(14)
PMB_ADDR_ENTRY15:	.long	PMB_ADDR_BASE(15)

PMB_ADDR_SPIBOOT_D:	.long	mk_pmb_addr_val(0xa0)
PMB_ADDR_DDR_C1_D:	.long	mk_pmb_addr_val(0x88)
PMB_ADDR_DDR_N1_D:	.long	mk_pmb_addr_val(0xa8)
PMB_ADDR_NOT_USE_D:	.long	0x00000000

PMB_DATA_SPIBOOT_A:	.long	PMB_DATA_BASE(0)
PMB_DATA_DDR_N1_A:	.long	PMB_DATA_BASE(1)
PMB_DATA_DDR_C1_A:	.long	PMB_DATA_BASE(5)

/*						ppn   ub v s1 s0  c  wt */
PMB_DATA_SPIBOOT_D:	.long	mk_pmb_data_val(0x00, 0, 1, 1, 0, 0, 1)
PMB_DATA_DDR_C1_D:	.long	mk_pmb_data_val(0x48, 0, 1, 1, 0, 1, 1)
PMB_DATA_DDR_N1_D:	.long	mk_pmb_data_val(0x48, 1, 1, 1, 0, 0, 1)

PASCR_A:		.long	0xff000070
DUMMY_ADDR:		.long	0xa0000000
PASCR_29BIT_D:		.long	0x00000000
PASCR_INIT:		.long	0x80000080
MMUCR_A:		.long	0xff000010
MMUCR_D:		.long	0x00000004	/* clear ITLB */
#endif	/* CONFIG_SH_32BIT */

CCR_A:		.long	CCR
CCR_D:		.long	CCR_CACHE_INIT