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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / e8dd60d489e19d12b193b945bb0d13ba40f9d8b0 / . / board / renesas / sh7752evb / lowlevel_init.S
blob: 0f7b643ad8fe0dcd173eaf2234dd7537f6ce2b44 [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -0400[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0+ */
Yoshihiro Shimoda1a2621b2012-11-04 15:53:22 +0000[diff] [blame]2/*
3 * Copyright (C) 2012 Renesas Solutions Corp.
Yoshihiro Shimoda1a2621b2012-11-04 15:53:22 +0000[diff] [blame]4 */
5
6#include <config.h>
Yoshihiro Shimoda1a2621b2012-11-04 15:53:22 +0000[diff] [blame]7#include <asm/processor.h>
8#include <asm/macro.h>
9
10.macro or32, addr, data
11 mov.l \addr, r1
12 mov.l \data, r0
13 mov.l @r1, r2
14 or r2, r0
15 mov.l r0, @r1
16.endm
17
18.macro wait_DBCMD
19 mov.l DBWAIT_A, r0
20 mov.l @r0, r1
21.endm
22
23 .global lowlevel_init
24 .section .spiboot1.text
25 .align 2
26
27lowlevel_init:
28 /*------- GPIO -------*/
29 write16 PDCR_A, PDCR_D ! SPI0
30 write16 PGCR_A, PGCR_D ! SPI0, GETHER MDIO gate(PTG1)
31 write16 PJCR_A, PJCR_D ! SCIF4
32 write16 PTCR_A, PTCR_D ! STATUS
33 write16 PSEL1_A, PSEL1_D ! SPI0
34 write16 PSEL2_A, PSEL2_D ! SPI0
35 write16 PSEL5_A, PSEL5_D ! STATUS
36
37 bra exit_gpio
38 nop
39
40 .align 2
41
42/*------- GPIO -------*/
43PDCR_A: .long 0xffec0006
44PGCR_A: .long 0xffec000c
45PJCR_A: .long 0xffec0012
46PTCR_A: .long 0xffec0026
47PSEL1_A: .long 0xffec0072
48PSEL2_A: .long 0xffec0074
49PSEL5_A: .long 0xffec007a
50
51PDCR_D: .long 0x0000
52PGCR_D: .long 0x0004
53PJCR_D: .long 0x0000
54PTCR_D: .long 0x0000
55PSEL1_D: .long 0x0000
56PSEL2_D: .long 0x3000
57PSEL5_D: .long 0x0ffc
58
59 .align 2
60
61exit_gpio:
62 mov #0, r14
63 mova 2f, r0
64 mov.l PC_MASK, r1
65 tst r0, r1
66 bf 2f
67
68 bra exit_pmb
69 nop
70
71 .align 2
72
73/* If CPU runs on SDRAM (PC=0x5???????) or not. */
74PC_MASK: .long 0x20000000
75
762:
77 mov #1, r14
78
79 mov.l EXPEVT_A, r0
80 mov.l @r0, r0
81 mov.l EXPEVT_POWER_ON_RESET, r1
82 cmp/eq r0, r1
83 bt 1f
84
85 /*
86 * If EXPEVT value is manual reset or tlb multipul-hit,
87 * initialization of DDR3IF is not necessary.
88 */
89 bra exit_ddr
90 nop
91
921:
93 /*------- Reset -------*/
94 write32 MRSTCR0_A, MRSTCR0_D
95 write32 MRSTCR1_A, MRSTCR1_D
96
97 /* For Core Reset */
98 mov.l DBACEN_A, r0
99 mov.l @r0, r0
100 cmp/eq #0, r0
101 bt 3f
102
103 /*
104 * If DBACEN == 1(DBSC was already enabled), we have to avoid the
105 * initialization of DDR3-SDRAM.
106 */
107 bra exit_ddr
108 nop
109
1103:
111 /*------- DDR3IF -------*/
112 /* oscillation stabilization time */
113 wait_timer WAIT_OSC_TIME
114
115 /* step 3 */
116 write32 DBCMD_A, DBCMD_RSTL_VAL
117 wait_timer WAIT_30US
118
119 /* step 4 */
120 write32 DBCMD_A, DBCMD_PDEN_VAL
121
122 /* step 5 */
123 write32 DBKIND_A, DBKIND_D
124
125 /* step 6 */
126 write32 DBCONF_A, DBCONF_D
127 write32 DBTR0_A, DBTR0_D
128 write32 DBTR1_A, DBTR1_D
129 write32 DBTR2_A, DBTR2_D
130 write32 DBTR3_A, DBTR3_D
131 write32 DBTR4_A, DBTR4_D
132 write32 DBTR5_A, DBTR5_D
133 write32 DBTR6_A, DBTR6_D
134 write32 DBTR7_A, DBTR7_D
135 write32 DBTR8_A, DBTR8_D
136 write32 DBTR9_A, DBTR9_D
137 write32 DBTR10_A, DBTR10_D
138 write32 DBTR11_A, DBTR11_D
139 write32 DBTR12_A, DBTR12_D
140 write32 DBTR13_A, DBTR13_D
141 write32 DBTR14_A, DBTR14_D
142 write32 DBTR15_A, DBTR15_D
143 write32 DBTR16_A, DBTR16_D
144 write32 DBTR17_A, DBTR17_D
145 write32 DBTR18_A, DBTR18_D
146 write32 DBTR19_A, DBTR19_D
147 write32 DBRNK0_A, DBRNK0_D
148
149 /* step 7 */
150 write32 DBPDCNT3_A, DBPDCNT3_D
151
152 /* step 8 */
153 write32 DBPDCNT1_A, DBPDCNT1_D
154 write32 DBPDCNT2_A, DBPDCNT2_D
155 write32 DBPDLCK_A, DBPDLCK_D
156 write32 DBPDRGA_A, DBPDRGA_D
157 write32 DBPDRGD_A, DBPDRGD_D
158
159 /* step 9 */
160 wait_timer WAIT_30US
161
162 /* step 10 */
163 write32 DBPDCNT0_A, DBPDCNT0_D
164
165 /* step 11 */
166 wait_timer WAIT_30US
167 wait_timer WAIT_30US
168
169 /* step 12 */
170 write32 DBCMD_A, DBCMD_WAIT_VAL
171 wait_DBCMD
172
173 /* step 13 */
174 write32 DBCMD_A, DBCMD_RSTH_VAL
175 wait_DBCMD
176
177 /* step 14 */
178 write32 DBCMD_A, DBCMD_WAIT_VAL
179 write32 DBCMD_A, DBCMD_WAIT_VAL
180 write32 DBCMD_A, DBCMD_WAIT_VAL
181 write32 DBCMD_A, DBCMD_WAIT_VAL
182
183 /* step 15 */
184 write32 DBCMD_A, DBCMD_PDXT_VAL
185
186 /* step 16 */
187 write32 DBCMD_A, DBCMD_MRS2_VAL
188
189 /* step 17 */
190 write32 DBCMD_A, DBCMD_MRS3_VAL
191
192 /* step 18 */
193 write32 DBCMD_A, DBCMD_MRS1_VAL
194
195 /* step 19 */
196 write32 DBCMD_A, DBCMD_MRS0_VAL
197
198 /* step 20 */
199 write32 DBCMD_A, DBCMD_ZQCL_VAL
200
201 write32 DBCMD_A, DBCMD_REF_VAL
202 write32 DBCMD_A, DBCMD_REF_VAL
203 wait_DBCMD
204
205 /* step 21 */
206 write32 DBADJ0_A, DBADJ0_D
207 write32 DBADJ1_A, DBADJ1_D
208 write32 DBADJ2_A, DBADJ2_D
209
210 /* step 22 */
211 write32 DBRFCNF0_A, DBRFCNF0_D
212 write32 DBRFCNF1_A, DBRFCNF1_D
213 write32 DBRFCNF2_A, DBRFCNF2_D
214
215 /* step 23 */
216 write32 DBCALCNF_A, DBCALCNF_D
217
218 /* step 24 */
219 write32 DBRFEN_A, DBRFEN_D
220 write32 DBCMD_A, DBCMD_SRXT_VAL
221
222 /* step 25 */
223 write32 DBACEN_A, DBACEN_D
224
225 /* step 26 */
226 wait_DBCMD
227
228 bra exit_ddr
229 nop
230
231 .align 2
232
233EXPEVT_A: .long 0xff000024
234EXPEVT_POWER_ON_RESET: .long 0x00000000
235
236/*------- Reset -------*/
237MRSTCR0_A: .long 0xffd50030
238MRSTCR0_D: .long 0xfe1ffe7f
239MRSTCR1_A: .long 0xffd50034
240MRSTCR1_D: .long 0xfff3ffff
241
242/*------- DDR3IF -------*/
243DBCMD_A: .long 0xfe800018
244DBKIND_A: .long 0xfe800020
245DBCONF_A: .long 0xfe800024
246DBTR0_A: .long 0xfe800040
247DBTR1_A: .long 0xfe800044
248DBTR2_A: .long 0xfe800048
249DBTR3_A: .long 0xfe800050
250DBTR4_A: .long 0xfe800054
251DBTR5_A: .long 0xfe800058
252DBTR6_A: .long 0xfe80005c
253DBTR7_A: .long 0xfe800060
254DBTR8_A: .long 0xfe800064
255DBTR9_A: .long 0xfe800068
256DBTR10_A: .long 0xfe80006c
257DBTR11_A: .long 0xfe800070
258DBTR12_A: .long 0xfe800074
259DBTR13_A: .long 0xfe800078
260DBTR14_A: .long 0xfe80007c
261DBTR15_A: .long 0xfe800080
262DBTR16_A: .long 0xfe800084
263DBTR17_A: .long 0xfe800088
264DBTR18_A: .long 0xfe80008c
265DBTR19_A: .long 0xfe800090
266DBRNK0_A: .long 0xfe800100
267DBPDCNT0_A: .long 0xfe800200
268DBPDCNT1_A: .long 0xfe800204
269DBPDCNT2_A: .long 0xfe800208
270DBPDCNT3_A: .long 0xfe80020c
271DBPDLCK_A: .long 0xfe800280
272DBPDRGA_A: .long 0xfe800290
273DBPDRGD_A: .long 0xfe8002a0
274DBADJ0_A: .long 0xfe8000c0
275DBADJ1_A: .long 0xfe8000c4
276DBADJ2_A: .long 0xfe8000c8
277DBRFCNF0_A: .long 0xfe8000e0
278DBRFCNF1_A: .long 0xfe8000e4
279DBRFCNF2_A: .long 0xfe8000e8
280DBCALCNF_A: .long 0xfe8000f4
281DBRFEN_A: .long 0xfe800014
282DBACEN_A: .long 0xfe800010
283DBWAIT_A: .long 0xfe80001c
284
285WAIT_OSC_TIME: .long 6000
286WAIT_30US: .long 13333
287
288DBCMD_RSTL_VAL: .long 0x20000000
289DBCMD_PDEN_VAL: .long 0x1000d73c
290DBCMD_WAIT_VAL: .long 0x0000d73c
291DBCMD_RSTH_VAL: .long 0x2100d73c
292DBCMD_PDXT_VAL: .long 0x110000c8
293DBCMD_MRS0_VAL: .long 0x28000930
294DBCMD_MRS1_VAL: .long 0x29000004
295DBCMD_MRS2_VAL: .long 0x2a000008
296DBCMD_MRS3_VAL: .long 0x2b000000
297DBCMD_ZQCL_VAL: .long 0x03000200
298DBCMD_REF_VAL: .long 0x0c000000
299DBCMD_SRXT_VAL: .long 0x19000000
300DBKIND_D: .long 0x00000007
301DBCONF_D: .long 0x0f030a01
302DBTR0_D: .long 0x00000007
303DBTR1_D: .long 0x00000006
304DBTR2_D: .long 0x00000000
305DBTR3_D: .long 0x00000007
306DBTR4_D: .long 0x00070007
307DBTR5_D: .long 0x0000001b
308DBTR6_D: .long 0x00000014
309DBTR7_D: .long 0x00000005
310DBTR8_D: .long 0x00000015
311DBTR9_D: .long 0x00000006
312DBTR10_D: .long 0x00000008
313DBTR11_D: .long 0x00000007
314DBTR12_D: .long 0x0000000e
315DBTR13_D: .long 0x00000056
316DBTR14_D: .long 0x00000006
317DBTR15_D: .long 0x00000004
318DBTR16_D: .long 0x00150002
319DBTR17_D: .long 0x000c0017
320DBTR18_D: .long 0x00000200
321DBTR19_D: .long 0x00000040
322DBRNK0_D: .long 0x00000001
323DBPDCNT0_D: .long 0x00000001
324DBPDCNT1_D: .long 0x00000001
325DBPDCNT2_D: .long 0x00000000
326DBPDCNT3_D: .long 0x00004010
327DBPDLCK_D: .long 0x0000a55a
328DBPDRGA_D: .long 0x00000028
329DBPDRGD_D: .long 0x00017100
330
331DBADJ0_D: .long 0x00000000
332DBADJ1_D: .long 0x00000000
333DBADJ2_D: .long 0x18061806
334DBRFCNF0_D: .long 0x000001ff
335DBRFCNF1_D: .long 0x08001000
336DBRFCNF2_D: .long 0x00000000
337DBCALCNF_D: .long 0x0000ffff
338DBRFEN_D: .long 0x00000001
339DBACEN_D: .long 0x00000001
340
341 .align 2
342exit_ddr:
343#if defined(CONFIG_SH_32BIT)
344 /*------- set PMB -------*/
345 write32 PASCR_A, PASCR_29BIT_D
346 write32 MMUCR_A, MMUCR_D
347
348 /*****************************************************************
349 * ent virt phys v sz c wt
350 * 0 0xa0000000 0x00000000 1 128M 0 1
351 * 1 0xa8000000 0x48000000 1 128M 0 1
352 * 5 0x88000000 0x48000000 1 128M 1 1
353 */
354 write32 PMB_ADDR_SPIBOOT_A, PMB_ADDR_SPIBOOT_D
355 write32 PMB_DATA_SPIBOOT_A, PMB_DATA_SPIBOOT_D
356 write32 PMB_ADDR_DDR_C1_A, PMB_ADDR_DDR_C1_D
357 write32 PMB_DATA_DDR_C1_A, PMB_DATA_DDR_C1_D
358 write32 PMB_ADDR_DDR_N1_A, PMB_ADDR_DDR_N1_D
359 write32 PMB_DATA_DDR_N1_A, PMB_DATA_DDR_N1_D
360
361 write32 PMB_ADDR_ENTRY2, PMB_ADDR_NOT_USE_D
362 write32 PMB_ADDR_ENTRY3, PMB_ADDR_NOT_USE_D
363 write32 PMB_ADDR_ENTRY4, PMB_ADDR_NOT_USE_D
364 write32 PMB_ADDR_ENTRY6, PMB_ADDR_NOT_USE_D
365 write32 PMB_ADDR_ENTRY7, PMB_ADDR_NOT_USE_D
366 write32 PMB_ADDR_ENTRY8, PMB_ADDR_NOT_USE_D
367 write32 PMB_ADDR_ENTRY9, PMB_ADDR_NOT_USE_D
368 write32 PMB_ADDR_ENTRY10, PMB_ADDR_NOT_USE_D
369 write32 PMB_ADDR_ENTRY11, PMB_ADDR_NOT_USE_D
370 write32 PMB_ADDR_ENTRY12, PMB_ADDR_NOT_USE_D
371 write32 PMB_ADDR_ENTRY13, PMB_ADDR_NOT_USE_D
372 write32 PMB_ADDR_ENTRY14, PMB_ADDR_NOT_USE_D
373 write32 PMB_ADDR_ENTRY15, PMB_ADDR_NOT_USE_D
374
375 write32 PASCR_A, PASCR_INIT
376 mov.l DUMMY_ADDR, r0
377 icbi @r0
378#endif /* if defined(CONFIG_SH_32BIT) */
379
380exit_pmb:
381 /* CPU is running on ILRAM? */
382 mov r14, r0
383 tst #1, r0
384 bt 1f
385
386 mov.l _stack_ilram, r15
387 mov.l _spiboot_main, r0
388100: bsrf r0
389 nop
390
391 .align 2
392_spiboot_main: .long (spiboot_main - (100b + 4))
393_stack_ilram: .long 0xe5204000
394
3951:
396 write32 CCR_A, CCR_D
397
398 rts
399 nop
400
401 .align 2
402
403#if defined(CONFIG_SH_32BIT)
404/*------- set PMB -------*/
405PMB_ADDR_SPIBOOT_A: .long PMB_ADDR_BASE(0)
406PMB_ADDR_DDR_N1_A: .long PMB_ADDR_BASE(1)
407PMB_ADDR_DDR_C1_A: .long PMB_ADDR_BASE(5)
408PMB_ADDR_ENTRY2: .long PMB_ADDR_BASE(2)
409PMB_ADDR_ENTRY3: .long PMB_ADDR_BASE(3)
410PMB_ADDR_ENTRY4: .long PMB_ADDR_BASE(4)
411PMB_ADDR_ENTRY6: .long PMB_ADDR_BASE(6)
412PMB_ADDR_ENTRY7: .long PMB_ADDR_BASE(7)
413PMB_ADDR_ENTRY8: .long PMB_ADDR_BASE(8)
414PMB_ADDR_ENTRY9: .long PMB_ADDR_BASE(9)
415PMB_ADDR_ENTRY10: .long PMB_ADDR_BASE(10)
416PMB_ADDR_ENTRY11: .long PMB_ADDR_BASE(11)
417PMB_ADDR_ENTRY12: .long PMB_ADDR_BASE(12)
418PMB_ADDR_ENTRY13: .long PMB_ADDR_BASE(13)
419PMB_ADDR_ENTRY14: .long PMB_ADDR_BASE(14)
420PMB_ADDR_ENTRY15: .long PMB_ADDR_BASE(15)
421
422PMB_ADDR_SPIBOOT_D: .long mk_pmb_addr_val(0xa0)
423PMB_ADDR_DDR_C1_D: .long mk_pmb_addr_val(0x88)
424PMB_ADDR_DDR_N1_D: .long mk_pmb_addr_val(0xa8)
425PMB_ADDR_NOT_USE_D: .long 0x00000000
426
427PMB_DATA_SPIBOOT_A: .long PMB_DATA_BASE(0)
428PMB_DATA_DDR_N1_A: .long PMB_DATA_BASE(1)
429PMB_DATA_DDR_C1_A: .long PMB_DATA_BASE(5)
430
431/* ppn ub v s1 s0 c wt */
432PMB_DATA_SPIBOOT_D: .long mk_pmb_data_val(0x00, 0, 1, 1, 0, 0, 1)
433PMB_DATA_DDR_C1_D: .long mk_pmb_data_val(0x48, 0, 1, 1, 0, 1, 1)
434PMB_DATA_DDR_N1_D: .long mk_pmb_data_val(0x48, 1, 1, 1, 0, 0, 1)
435
436PASCR_A: .long 0xff000070
437DUMMY_ADDR: .long 0xa0000000
438PASCR_29BIT_D: .long 0x00000000
439PASCR_INIT: .long 0x80000080
440MMUCR_A: .long 0xff000010
441MMUCR_D: .long 0x00000004 /* clear ITLB */
442#endif /* CONFIG_SH_32BIT */
443
444CCR_A: .long CCR
445CCR_D: .long CCR_CACHE_INIT