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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 922f735ecf0de23eb0e01c208f5b422f39f6aed9 / . / board / renesas / sh7752evb / lowlevel_init.S
blob: cc8b8c0aca37d78e4fc05c47539e90c7969c47d7 [file] [log] [blame]
Yoshihiro Shimoda1a2621b2012-11-04 15:53:22 +0000[diff] [blame]1/*
2 * Copyright (C) 2012 Renesas Solutions Corp.
3 *
Wolfgang Denk1a459662013-07-08 09:37:19 +0200[diff] [blame]4 * SPDX-License-Identifier: GPL-2.0+
Yoshihiro Shimoda1a2621b2012-11-04 15:53:22 +0000[diff] [blame]5 */
6
7#include <config.h>
Yoshihiro Shimoda1a2621b2012-11-04 15:53:22 +0000[diff] [blame]8#include <asm/processor.h>
9#include <asm/macro.h>
10
11.macro or32, addr, data
12 mov.l \addr, r1
13 mov.l \data, r0
14 mov.l @r1, r2
15 or r2, r0
16 mov.l r0, @r1
17.endm
18
19.macro wait_DBCMD
20 mov.l DBWAIT_A, r0
21 mov.l @r0, r1
22.endm
23
24 .global lowlevel_init
25 .section .spiboot1.text
26 .align 2
27
28lowlevel_init:
29 /*------- GPIO -------*/
30 write16 PDCR_A, PDCR_D ! SPI0
31 write16 PGCR_A, PGCR_D ! SPI0, GETHER MDIO gate(PTG1)
32 write16 PJCR_A, PJCR_D ! SCIF4
33 write16 PTCR_A, PTCR_D ! STATUS
34 write16 PSEL1_A, PSEL1_D ! SPI0
35 write16 PSEL2_A, PSEL2_D ! SPI0
36 write16 PSEL5_A, PSEL5_D ! STATUS
37
38 bra exit_gpio
39 nop
40
41 .align 2
42
43/*------- GPIO -------*/
44PDCR_A: .long 0xffec0006
45PGCR_A: .long 0xffec000c
46PJCR_A: .long 0xffec0012
47PTCR_A: .long 0xffec0026
48PSEL1_A: .long 0xffec0072
49PSEL2_A: .long 0xffec0074
50PSEL5_A: .long 0xffec007a
51
52PDCR_D: .long 0x0000
53PGCR_D: .long 0x0004
54PJCR_D: .long 0x0000
55PTCR_D: .long 0x0000
56PSEL1_D: .long 0x0000
57PSEL2_D: .long 0x3000
58PSEL5_D: .long 0x0ffc
59
60 .align 2
61
62exit_gpio:
63 mov #0, r14
64 mova 2f, r0
65 mov.l PC_MASK, r1
66 tst r0, r1
67 bf 2f
68
69 bra exit_pmb
70 nop
71
72 .align 2
73
74/* If CPU runs on SDRAM (PC=0x5???????) or not. */
75PC_MASK: .long 0x20000000
76
772:
78 mov #1, r14
79
80 mov.l EXPEVT_A, r0
81 mov.l @r0, r0
82 mov.l EXPEVT_POWER_ON_RESET, r1
83 cmp/eq r0, r1
84 bt 1f
85
86 /*
87 * If EXPEVT value is manual reset or tlb multipul-hit,
88 * initialization of DDR3IF is not necessary.
89 */
90 bra exit_ddr
91 nop
92
931:
94 /*------- Reset -------*/
95 write32 MRSTCR0_A, MRSTCR0_D
96 write32 MRSTCR1_A, MRSTCR1_D
97
98 /* For Core Reset */
99 mov.l DBACEN_A, r0
100 mov.l @r0, r0
101 cmp/eq #0, r0
102 bt 3f
103
104 /*
105 * If DBACEN == 1(DBSC was already enabled), we have to avoid the
106 * initialization of DDR3-SDRAM.
107 */
108 bra exit_ddr
109 nop
110
1113:
112 /*------- DDR3IF -------*/
113 /* oscillation stabilization time */
114 wait_timer WAIT_OSC_TIME
115
116 /* step 3 */
117 write32 DBCMD_A, DBCMD_RSTL_VAL
118 wait_timer WAIT_30US
119
120 /* step 4 */
121 write32 DBCMD_A, DBCMD_PDEN_VAL
122
123 /* step 5 */
124 write32 DBKIND_A, DBKIND_D
125
126 /* step 6 */
127 write32 DBCONF_A, DBCONF_D
128 write32 DBTR0_A, DBTR0_D
129 write32 DBTR1_A, DBTR1_D
130 write32 DBTR2_A, DBTR2_D
131 write32 DBTR3_A, DBTR3_D
132 write32 DBTR4_A, DBTR4_D
133 write32 DBTR5_A, DBTR5_D
134 write32 DBTR6_A, DBTR6_D
135 write32 DBTR7_A, DBTR7_D
136 write32 DBTR8_A, DBTR8_D
137 write32 DBTR9_A, DBTR9_D
138 write32 DBTR10_A, DBTR10_D
139 write32 DBTR11_A, DBTR11_D
140 write32 DBTR12_A, DBTR12_D
141 write32 DBTR13_A, DBTR13_D
142 write32 DBTR14_A, DBTR14_D
143 write32 DBTR15_A, DBTR15_D
144 write32 DBTR16_A, DBTR16_D
145 write32 DBTR17_A, DBTR17_D
146 write32 DBTR18_A, DBTR18_D
147 write32 DBTR19_A, DBTR19_D
148 write32 DBRNK0_A, DBRNK0_D
149
150 /* step 7 */
151 write32 DBPDCNT3_A, DBPDCNT3_D
152
153 /* step 8 */
154 write32 DBPDCNT1_A, DBPDCNT1_D
155 write32 DBPDCNT2_A, DBPDCNT2_D
156 write32 DBPDLCK_A, DBPDLCK_D
157 write32 DBPDRGA_A, DBPDRGA_D
158 write32 DBPDRGD_A, DBPDRGD_D
159
160 /* step 9 */
161 wait_timer WAIT_30US
162
163 /* step 10 */
164 write32 DBPDCNT0_A, DBPDCNT0_D
165
166 /* step 11 */
167 wait_timer WAIT_30US
168 wait_timer WAIT_30US
169
170 /* step 12 */
171 write32 DBCMD_A, DBCMD_WAIT_VAL
172 wait_DBCMD
173
174 /* step 13 */
175 write32 DBCMD_A, DBCMD_RSTH_VAL
176 wait_DBCMD
177
178 /* step 14 */
179 write32 DBCMD_A, DBCMD_WAIT_VAL
180 write32 DBCMD_A, DBCMD_WAIT_VAL
181 write32 DBCMD_A, DBCMD_WAIT_VAL
182 write32 DBCMD_A, DBCMD_WAIT_VAL
183
184 /* step 15 */
185 write32 DBCMD_A, DBCMD_PDXT_VAL
186
187 /* step 16 */
188 write32 DBCMD_A, DBCMD_MRS2_VAL
189
190 /* step 17 */
191 write32 DBCMD_A, DBCMD_MRS3_VAL
192
193 /* step 18 */
194 write32 DBCMD_A, DBCMD_MRS1_VAL
195
196 /* step 19 */
197 write32 DBCMD_A, DBCMD_MRS0_VAL
198
199 /* step 20 */
200 write32 DBCMD_A, DBCMD_ZQCL_VAL
201
202 write32 DBCMD_A, DBCMD_REF_VAL
203 write32 DBCMD_A, DBCMD_REF_VAL
204 wait_DBCMD
205
206 /* step 21 */
207 write32 DBADJ0_A, DBADJ0_D
208 write32 DBADJ1_A, DBADJ1_D
209 write32 DBADJ2_A, DBADJ2_D
210
211 /* step 22 */
212 write32 DBRFCNF0_A, DBRFCNF0_D
213 write32 DBRFCNF1_A, DBRFCNF1_D
214 write32 DBRFCNF2_A, DBRFCNF2_D
215
216 /* step 23 */
217 write32 DBCALCNF_A, DBCALCNF_D
218
219 /* step 24 */
220 write32 DBRFEN_A, DBRFEN_D
221 write32 DBCMD_A, DBCMD_SRXT_VAL
222
223 /* step 25 */
224 write32 DBACEN_A, DBACEN_D
225
226 /* step 26 */
227 wait_DBCMD
228
229 bra exit_ddr
230 nop
231
232 .align 2
233
234EXPEVT_A: .long 0xff000024
235EXPEVT_POWER_ON_RESET: .long 0x00000000
236
237/*------- Reset -------*/
238MRSTCR0_A: .long 0xffd50030
239MRSTCR0_D: .long 0xfe1ffe7f
240MRSTCR1_A: .long 0xffd50034
241MRSTCR1_D: .long 0xfff3ffff
242
243/*------- DDR3IF -------*/
244DBCMD_A: .long 0xfe800018
245DBKIND_A: .long 0xfe800020
246DBCONF_A: .long 0xfe800024
247DBTR0_A: .long 0xfe800040
248DBTR1_A: .long 0xfe800044
249DBTR2_A: .long 0xfe800048
250DBTR3_A: .long 0xfe800050
251DBTR4_A: .long 0xfe800054
252DBTR5_A: .long 0xfe800058
253DBTR6_A: .long 0xfe80005c
254DBTR7_A: .long 0xfe800060
255DBTR8_A: .long 0xfe800064
256DBTR9_A: .long 0xfe800068
257DBTR10_A: .long 0xfe80006c
258DBTR11_A: .long 0xfe800070
259DBTR12_A: .long 0xfe800074
260DBTR13_A: .long 0xfe800078
261DBTR14_A: .long 0xfe80007c
262DBTR15_A: .long 0xfe800080
263DBTR16_A: .long 0xfe800084
264DBTR17_A: .long 0xfe800088
265DBTR18_A: .long 0xfe80008c
266DBTR19_A: .long 0xfe800090
267DBRNK0_A: .long 0xfe800100
268DBPDCNT0_A: .long 0xfe800200
269DBPDCNT1_A: .long 0xfe800204
270DBPDCNT2_A: .long 0xfe800208
271DBPDCNT3_A: .long 0xfe80020c
272DBPDLCK_A: .long 0xfe800280
273DBPDRGA_A: .long 0xfe800290
274DBPDRGD_A: .long 0xfe8002a0
275DBADJ0_A: .long 0xfe8000c0
276DBADJ1_A: .long 0xfe8000c4
277DBADJ2_A: .long 0xfe8000c8
278DBRFCNF0_A: .long 0xfe8000e0
279DBRFCNF1_A: .long 0xfe8000e4
280DBRFCNF2_A: .long 0xfe8000e8
281DBCALCNF_A: .long 0xfe8000f4
282DBRFEN_A: .long 0xfe800014
283DBACEN_A: .long 0xfe800010
284DBWAIT_A: .long 0xfe80001c
285
286WAIT_OSC_TIME: .long 6000
287WAIT_30US: .long 13333
288
289DBCMD_RSTL_VAL: .long 0x20000000
290DBCMD_PDEN_VAL: .long 0x1000d73c
291DBCMD_WAIT_VAL: .long 0x0000d73c
292DBCMD_RSTH_VAL: .long 0x2100d73c
293DBCMD_PDXT_VAL: .long 0x110000c8
294DBCMD_MRS0_VAL: .long 0x28000930
295DBCMD_MRS1_VAL: .long 0x29000004
296DBCMD_MRS2_VAL: .long 0x2a000008
297DBCMD_MRS3_VAL: .long 0x2b000000
298DBCMD_ZQCL_VAL: .long 0x03000200
299DBCMD_REF_VAL: .long 0x0c000000
300DBCMD_SRXT_VAL: .long 0x19000000
301DBKIND_D: .long 0x00000007
302DBCONF_D: .long 0x0f030a01
303DBTR0_D: .long 0x00000007
304DBTR1_D: .long 0x00000006
305DBTR2_D: .long 0x00000000
306DBTR3_D: .long 0x00000007
307DBTR4_D: .long 0x00070007
308DBTR5_D: .long 0x0000001b
309DBTR6_D: .long 0x00000014
310DBTR7_D: .long 0x00000005
311DBTR8_D: .long 0x00000015
312DBTR9_D: .long 0x00000006
313DBTR10_D: .long 0x00000008
314DBTR11_D: .long 0x00000007
315DBTR12_D: .long 0x0000000e
316DBTR13_D: .long 0x00000056
317DBTR14_D: .long 0x00000006
318DBTR15_D: .long 0x00000004
319DBTR16_D: .long 0x00150002
320DBTR17_D: .long 0x000c0017
321DBTR18_D: .long 0x00000200
322DBTR19_D: .long 0x00000040
323DBRNK0_D: .long 0x00000001
324DBPDCNT0_D: .long 0x00000001
325DBPDCNT1_D: .long 0x00000001
326DBPDCNT2_D: .long 0x00000000
327DBPDCNT3_D: .long 0x00004010
328DBPDLCK_D: .long 0x0000a55a
329DBPDRGA_D: .long 0x00000028
330DBPDRGD_D: .long 0x00017100
331
332DBADJ0_D: .long 0x00000000
333DBADJ1_D: .long 0x00000000
334DBADJ2_D: .long 0x18061806
335DBRFCNF0_D: .long 0x000001ff
336DBRFCNF1_D: .long 0x08001000
337DBRFCNF2_D: .long 0x00000000
338DBCALCNF_D: .long 0x0000ffff
339DBRFEN_D: .long 0x00000001
340DBACEN_D: .long 0x00000001
341
342 .align 2
343exit_ddr:
344#if defined(CONFIG_SH_32BIT)
345 /*------- set PMB -------*/
346 write32 PASCR_A, PASCR_29BIT_D
347 write32 MMUCR_A, MMUCR_D
348
349 /*****************************************************************
350 * ent virt phys v sz c wt
351 * 0 0xa0000000 0x00000000 1 128M 0 1
352 * 1 0xa8000000 0x48000000 1 128M 0 1
353 * 5 0x88000000 0x48000000 1 128M 1 1
354 */
355 write32 PMB_ADDR_SPIBOOT_A, PMB_ADDR_SPIBOOT_D
356 write32 PMB_DATA_SPIBOOT_A, PMB_DATA_SPIBOOT_D
357 write32 PMB_ADDR_DDR_C1_A, PMB_ADDR_DDR_C1_D
358 write32 PMB_DATA_DDR_C1_A, PMB_DATA_DDR_C1_D
359 write32 PMB_ADDR_DDR_N1_A, PMB_ADDR_DDR_N1_D
360 write32 PMB_DATA_DDR_N1_A, PMB_DATA_DDR_N1_D
361
362 write32 PMB_ADDR_ENTRY2, PMB_ADDR_NOT_USE_D
363 write32 PMB_ADDR_ENTRY3, PMB_ADDR_NOT_USE_D
364 write32 PMB_ADDR_ENTRY4, PMB_ADDR_NOT_USE_D
365 write32 PMB_ADDR_ENTRY6, PMB_ADDR_NOT_USE_D
366 write32 PMB_ADDR_ENTRY7, PMB_ADDR_NOT_USE_D
367 write32 PMB_ADDR_ENTRY8, PMB_ADDR_NOT_USE_D
368 write32 PMB_ADDR_ENTRY9, PMB_ADDR_NOT_USE_D
369 write32 PMB_ADDR_ENTRY10, PMB_ADDR_NOT_USE_D
370 write32 PMB_ADDR_ENTRY11, PMB_ADDR_NOT_USE_D
371 write32 PMB_ADDR_ENTRY12, PMB_ADDR_NOT_USE_D
372 write32 PMB_ADDR_ENTRY13, PMB_ADDR_NOT_USE_D
373 write32 PMB_ADDR_ENTRY14, PMB_ADDR_NOT_USE_D
374 write32 PMB_ADDR_ENTRY15, PMB_ADDR_NOT_USE_D
375
376 write32 PASCR_A, PASCR_INIT
377 mov.l DUMMY_ADDR, r0
378 icbi @r0
379#endif /* if defined(CONFIG_SH_32BIT) */
380
381exit_pmb:
382 /* CPU is running on ILRAM? */
383 mov r14, r0
384 tst #1, r0
385 bt 1f
386
387 mov.l _stack_ilram, r15
388 mov.l _spiboot_main, r0
389100: bsrf r0
390 nop
391
392 .align 2
393_spiboot_main: .long (spiboot_main - (100b + 4))
394_stack_ilram: .long 0xe5204000
395
3961:
397 write32 CCR_A, CCR_D
398
399 rts
400 nop
401
402 .align 2
403
404#if defined(CONFIG_SH_32BIT)
405/*------- set PMB -------*/
406PMB_ADDR_SPIBOOT_A: .long PMB_ADDR_BASE(0)
407PMB_ADDR_DDR_N1_A: .long PMB_ADDR_BASE(1)
408PMB_ADDR_DDR_C1_A: .long PMB_ADDR_BASE(5)
409PMB_ADDR_ENTRY2: .long PMB_ADDR_BASE(2)
410PMB_ADDR_ENTRY3: .long PMB_ADDR_BASE(3)
411PMB_ADDR_ENTRY4: .long PMB_ADDR_BASE(4)
412PMB_ADDR_ENTRY6: .long PMB_ADDR_BASE(6)
413PMB_ADDR_ENTRY7: .long PMB_ADDR_BASE(7)
414PMB_ADDR_ENTRY8: .long PMB_ADDR_BASE(8)
415PMB_ADDR_ENTRY9: .long PMB_ADDR_BASE(9)
416PMB_ADDR_ENTRY10: .long PMB_ADDR_BASE(10)
417PMB_ADDR_ENTRY11: .long PMB_ADDR_BASE(11)
418PMB_ADDR_ENTRY12: .long PMB_ADDR_BASE(12)
419PMB_ADDR_ENTRY13: .long PMB_ADDR_BASE(13)
420PMB_ADDR_ENTRY14: .long PMB_ADDR_BASE(14)
421PMB_ADDR_ENTRY15: .long PMB_ADDR_BASE(15)
422
423PMB_ADDR_SPIBOOT_D: .long mk_pmb_addr_val(0xa0)
424PMB_ADDR_DDR_C1_D: .long mk_pmb_addr_val(0x88)
425PMB_ADDR_DDR_N1_D: .long mk_pmb_addr_val(0xa8)
426PMB_ADDR_NOT_USE_D: .long 0x00000000
427
428PMB_DATA_SPIBOOT_A: .long PMB_DATA_BASE(0)
429PMB_DATA_DDR_N1_A: .long PMB_DATA_BASE(1)
430PMB_DATA_DDR_C1_A: .long PMB_DATA_BASE(5)
431
432/* ppn ub v s1 s0 c wt */
433PMB_DATA_SPIBOOT_D: .long mk_pmb_data_val(0x00, 0, 1, 1, 0, 0, 1)
434PMB_DATA_DDR_C1_D: .long mk_pmb_data_val(0x48, 0, 1, 1, 0, 1, 1)
435PMB_DATA_DDR_N1_D: .long mk_pmb_data_val(0x48, 1, 1, 1, 0, 0, 1)
436
437PASCR_A: .long 0xff000070
438DUMMY_ADDR: .long 0xa0000000
439PASCR_29BIT_D: .long 0x00000000
440PASCR_INIT: .long 0x80000080
441MMUCR_A: .long 0xff000010
442MMUCR_D: .long 0x00000004 /* clear ITLB */
443#endif /* CONFIG_SH_32BIT */
444
445CCR_A: .long CCR
446CCR_D: .long CCR_CACHE_INIT