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[people/ms/u-boot.git] / board / renesas / sh7752evb / lowlevel_init.S
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1a2621ba
YS		 1/*
2 * Copyright (C) 2012 Renesas Solutions Corp.
3 *
1a459660 4 * SPDX-License-Identifier: GPL-2.0+
1a2621ba
YS		 5 */
6
7#include <config.h>
8#include <version.h>
9#include <asm/processor.h>
10#include <asm/macro.h>
11
12.macro or32, addr, data
13 mov.l \addr, r1
14 mov.l \data, r0
15 mov.l @r1, r2
16 or r2, r0
17 mov.l r0, @r1
18.endm
19
20.macro wait_DBCMD
21 mov.l DBWAIT_A, r0
22 mov.l @r0, r1
23.endm
24
25 .global lowlevel_init
26 .section .spiboot1.text
27 .align 2
28
29lowlevel_init:
30 /*------- GPIO -------*/
31 write16 PDCR_A, PDCR_D ! SPI0
32 write16 PGCR_A, PGCR_D ! SPI0, GETHER MDIO gate(PTG1)
33 write16 PJCR_A, PJCR_D ! SCIF4
34 write16 PTCR_A, PTCR_D ! STATUS
35 write16 PSEL1_A, PSEL1_D ! SPI0
36 write16 PSEL2_A, PSEL2_D ! SPI0
37 write16 PSEL5_A, PSEL5_D ! STATUS
38
39 bra exit_gpio
40 nop
41
42 .align 2
43
44/*------- GPIO -------*/
45PDCR_A: .long 0xffec0006
46PGCR_A: .long 0xffec000c
47PJCR_A: .long 0xffec0012
48PTCR_A: .long 0xffec0026
49PSEL1_A: .long 0xffec0072
50PSEL2_A: .long 0xffec0074
51PSEL5_A: .long 0xffec007a
52
53PDCR_D: .long 0x0000
54PGCR_D: .long 0x0004
55PJCR_D: .long 0x0000
56PTCR_D: .long 0x0000
57PSEL1_D: .long 0x0000
58PSEL2_D: .long 0x3000
59PSEL5_D: .long 0x0ffc
60
61 .align 2
62
63exit_gpio:
64 mov #0, r14
65 mova 2f, r0
66 mov.l PC_MASK, r1
67 tst r0, r1
68 bf 2f
69
70 bra exit_pmb
71 nop
72
73 .align 2
74
75/* If CPU runs on SDRAM (PC=0x5???????) or not. */
76PC_MASK: .long 0x20000000
77
782:
79 mov #1, r14
80
81 mov.l EXPEVT_A, r0
82 mov.l @r0, r0
83 mov.l EXPEVT_POWER_ON_RESET, r1
84 cmp/eq r0, r1
85 bt 1f
86
87 /*
88 * If EXPEVT value is manual reset or tlb multipul-hit,
89 * initialization of DDR3IF is not necessary.
90 */
91 bra exit_ddr
92 nop
93
941:
95 /*------- Reset -------*/
96 write32 MRSTCR0_A, MRSTCR0_D
97 write32 MRSTCR1_A, MRSTCR1_D
98
99 /* For Core Reset */
100 mov.l DBACEN_A, r0
101 mov.l @r0, r0
102 cmp/eq #0, r0
103 bt 3f
104
105 /*
106 * If DBACEN == 1(DBSC was already enabled), we have to avoid the
107 * initialization of DDR3-SDRAM.
108 */
109 bra exit_ddr
110 nop
111
1123:
113 /*------- DDR3IF -------*/
114 /* oscillation stabilization time */
115 wait_timer WAIT_OSC_TIME
116
117 /* step 3 */
118 write32 DBCMD_A, DBCMD_RSTL_VAL
119 wait_timer WAIT_30US
120
121 /* step 4 */
122 write32 DBCMD_A, DBCMD_PDEN_VAL
123
124 /* step 5 */
125 write32 DBKIND_A, DBKIND_D
126
127 /* step 6 */
128 write32 DBCONF_A, DBCONF_D
129 write32 DBTR0_A, DBTR0_D
130 write32 DBTR1_A, DBTR1_D
131 write32 DBTR2_A, DBTR2_D
132 write32 DBTR3_A, DBTR3_D
133 write32 DBTR4_A, DBTR4_D
134 write32 DBTR5_A, DBTR5_D
135 write32 DBTR6_A, DBTR6_D
136 write32 DBTR7_A, DBTR7_D
137 write32 DBTR8_A, DBTR8_D
138 write32 DBTR9_A, DBTR9_D
139 write32 DBTR10_A, DBTR10_D
140 write32 DBTR11_A, DBTR11_D
141 write32 DBTR12_A, DBTR12_D
142 write32 DBTR13_A, DBTR13_D
143 write32 DBTR14_A, DBTR14_D
144 write32 DBTR15_A, DBTR15_D
145 write32 DBTR16_A, DBTR16_D
146 write32 DBTR17_A, DBTR17_D
147 write32 DBTR18_A, DBTR18_D
148 write32 DBTR19_A, DBTR19_D
149 write32 DBRNK0_A, DBRNK0_D
150
151 /* step 7 */
152 write32 DBPDCNT3_A, DBPDCNT3_D
153
154 /* step 8 */
155 write32 DBPDCNT1_A, DBPDCNT1_D
156 write32 DBPDCNT2_A, DBPDCNT2_D
157 write32 DBPDLCK_A, DBPDLCK_D
158 write32 DBPDRGA_A, DBPDRGA_D
159 write32 DBPDRGD_A, DBPDRGD_D
160
161 /* step 9 */
162 wait_timer WAIT_30US
163
164 /* step 10 */
165 write32 DBPDCNT0_A, DBPDCNT0_D
166
167 /* step 11 */
168 wait_timer WAIT_30US
169 wait_timer WAIT_30US
170
171 /* step 12 */
172 write32 DBCMD_A, DBCMD_WAIT_VAL
173 wait_DBCMD
174
175 /* step 13 */
176 write32 DBCMD_A, DBCMD_RSTH_VAL
177 wait_DBCMD
178
179 /* step 14 */
180 write32 DBCMD_A, DBCMD_WAIT_VAL
181 write32 DBCMD_A, DBCMD_WAIT_VAL
182 write32 DBCMD_A, DBCMD_WAIT_VAL
183 write32 DBCMD_A, DBCMD_WAIT_VAL
184
185 /* step 15 */
186 write32 DBCMD_A, DBCMD_PDXT_VAL
187
188 /* step 16 */
189 write32 DBCMD_A, DBCMD_MRS2_VAL
190
191 /* step 17 */
192 write32 DBCMD_A, DBCMD_MRS3_VAL
193
194 /* step 18 */
195 write32 DBCMD_A, DBCMD_MRS1_VAL
196
197 /* step 19 */
198 write32 DBCMD_A, DBCMD_MRS0_VAL
199
200 /* step 20 */
201 write32 DBCMD_A, DBCMD_ZQCL_VAL
202
203 write32 DBCMD_A, DBCMD_REF_VAL
204 write32 DBCMD_A, DBCMD_REF_VAL
205 wait_DBCMD
206
207 /* step 21 */
208 write32 DBADJ0_A, DBADJ0_D
209 write32 DBADJ1_A, DBADJ1_D
210 write32 DBADJ2_A, DBADJ2_D
211
212 /* step 22 */
213 write32 DBRFCNF0_A, DBRFCNF0_D
214 write32 DBRFCNF1_A, DBRFCNF1_D
215 write32 DBRFCNF2_A, DBRFCNF2_D
216
217 /* step 23 */
218 write32 DBCALCNF_A, DBCALCNF_D
219
220 /* step 24 */
221 write32 DBRFEN_A, DBRFEN_D
222 write32 DBCMD_A, DBCMD_SRXT_VAL
223
224 /* step 25 */
225 write32 DBACEN_A, DBACEN_D
226
227 /* step 26 */
228 wait_DBCMD
229
230 bra exit_ddr
231 nop
232
233 .align 2
234
235EXPEVT_A: .long 0xff000024
236EXPEVT_POWER_ON_RESET: .long 0x00000000
237
238/*------- Reset -------*/
239MRSTCR0_A: .long 0xffd50030
240MRSTCR0_D: .long 0xfe1ffe7f
241MRSTCR1_A: .long 0xffd50034
242MRSTCR1_D: .long 0xfff3ffff
243
244/*------- DDR3IF -------*/
245DBCMD_A: .long 0xfe800018
246DBKIND_A: .long 0xfe800020
247DBCONF_A: .long 0xfe800024
248DBTR0_A: .long 0xfe800040
249DBTR1_A: .long 0xfe800044
250DBTR2_A: .long 0xfe800048
251DBTR3_A: .long 0xfe800050
252DBTR4_A: .long 0xfe800054
253DBTR5_A: .long 0xfe800058
254DBTR6_A: .long 0xfe80005c
255DBTR7_A: .long 0xfe800060
256DBTR8_A: .long 0xfe800064
257DBTR9_A: .long 0xfe800068
258DBTR10_A: .long 0xfe80006c
259DBTR11_A: .long 0xfe800070
260DBTR12_A: .long 0xfe800074
261DBTR13_A: .long 0xfe800078
262DBTR14_A: .long 0xfe80007c
263DBTR15_A: .long 0xfe800080
264DBTR16_A: .long 0xfe800084
265DBTR17_A: .long 0xfe800088
266DBTR18_A: .long 0xfe80008c
267DBTR19_A: .long 0xfe800090
268DBRNK0_A: .long 0xfe800100
269DBPDCNT0_A: .long 0xfe800200
270DBPDCNT1_A: .long 0xfe800204
271DBPDCNT2_A: .long 0xfe800208
272DBPDCNT3_A: .long 0xfe80020c
273DBPDLCK_A: .long 0xfe800280
274DBPDRGA_A: .long 0xfe800290
275DBPDRGD_A: .long 0xfe8002a0
276DBADJ0_A: .long 0xfe8000c0
277DBADJ1_A: .long 0xfe8000c4
278DBADJ2_A: .long 0xfe8000c8
279DBRFCNF0_A: .long 0xfe8000e0
280DBRFCNF1_A: .long 0xfe8000e4
281DBRFCNF2_A: .long 0xfe8000e8
282DBCALCNF_A: .long 0xfe8000f4
283DBRFEN_A: .long 0xfe800014
284DBACEN_A: .long 0xfe800010
285DBWAIT_A: .long 0xfe80001c
286
287WAIT_OSC_TIME: .long 6000
288WAIT_30US: .long 13333
289
290DBCMD_RSTL_VAL: .long 0x20000000
291DBCMD_PDEN_VAL: .long 0x1000d73c
292DBCMD_WAIT_VAL: .long 0x0000d73c
293DBCMD_RSTH_VAL: .long 0x2100d73c
294DBCMD_PDXT_VAL: .long 0x110000c8
295DBCMD_MRS0_VAL: .long 0x28000930
296DBCMD_MRS1_VAL: .long 0x29000004
297DBCMD_MRS2_VAL: .long 0x2a000008
298DBCMD_MRS3_VAL: .long 0x2b000000
299DBCMD_ZQCL_VAL: .long 0x03000200
300DBCMD_REF_VAL: .long 0x0c000000
301DBCMD_SRXT_VAL: .long 0x19000000
302DBKIND_D: .long 0x00000007
303DBCONF_D: .long 0x0f030a01
304DBTR0_D: .long 0x00000007
305DBTR1_D: .long 0x00000006
306DBTR2_D: .long 0x00000000
307DBTR3_D: .long 0x00000007
308DBTR4_D: .long 0x00070007
309DBTR5_D: .long 0x0000001b
310DBTR6_D: .long 0x00000014
311DBTR7_D: .long 0x00000005
312DBTR8_D: .long 0x00000015
313DBTR9_D: .long 0x00000006
314DBTR10_D: .long 0x00000008
315DBTR11_D: .long 0x00000007
316DBTR12_D: .long 0x0000000e
317DBTR13_D: .long 0x00000056
318DBTR14_D: .long 0x00000006
319DBTR15_D: .long 0x00000004
320DBTR16_D: .long 0x00150002
321DBTR17_D: .long 0x000c0017
322DBTR18_D: .long 0x00000200
323DBTR19_D: .long 0x00000040
324DBRNK0_D: .long 0x00000001
325DBPDCNT0_D: .long 0x00000001
326DBPDCNT1_D: .long 0x00000001
327DBPDCNT2_D: .long 0x00000000
328DBPDCNT3_D: .long 0x00004010
329DBPDLCK_D: .long 0x0000a55a
330DBPDRGA_D: .long 0x00000028
331DBPDRGD_D: .long 0x00017100
332
333DBADJ0_D: .long 0x00000000
334DBADJ1_D: .long 0x00000000
335DBADJ2_D: .long 0x18061806
336DBRFCNF0_D: .long 0x000001ff
337DBRFCNF1_D: .long 0x08001000
338DBRFCNF2_D: .long 0x00000000
339DBCALCNF_D: .long 0x0000ffff
340DBRFEN_D: .long 0x00000001
341DBACEN_D: .long 0x00000001
342
343 .align 2
344exit_ddr:
345#if defined(CONFIG_SH_32BIT)
346 /*------- set PMB -------*/
347 write32 PASCR_A, PASCR_29BIT_D
348 write32 MMUCR_A, MMUCR_D
349
350 /*****************************************************************
351 * ent virt phys v sz c wt
352 * 0 0xa0000000 0x00000000 1 128M 0 1
353 * 1 0xa8000000 0x48000000 1 128M 0 1
354 * 5 0x88000000 0x48000000 1 128M 1 1
355 */
356 write32 PMB_ADDR_SPIBOOT_A, PMB_ADDR_SPIBOOT_D
357 write32 PMB_DATA_SPIBOOT_A, PMB_DATA_SPIBOOT_D
358 write32 PMB_ADDR_DDR_C1_A, PMB_ADDR_DDR_C1_D
359 write32 PMB_DATA_DDR_C1_A, PMB_DATA_DDR_C1_D
360 write32 PMB_ADDR_DDR_N1_A, PMB_ADDR_DDR_N1_D
361 write32 PMB_DATA_DDR_N1_A, PMB_DATA_DDR_N1_D
362
363 write32 PMB_ADDR_ENTRY2, PMB_ADDR_NOT_USE_D
364 write32 PMB_ADDR_ENTRY3, PMB_ADDR_NOT_USE_D
365 write32 PMB_ADDR_ENTRY4, PMB_ADDR_NOT_USE_D
366 write32 PMB_ADDR_ENTRY6, PMB_ADDR_NOT_USE_D
367 write32 PMB_ADDR_ENTRY7, PMB_ADDR_NOT_USE_D
368 write32 PMB_ADDR_ENTRY8, PMB_ADDR_NOT_USE_D
369 write32 PMB_ADDR_ENTRY9, PMB_ADDR_NOT_USE_D
370 write32 PMB_ADDR_ENTRY10, PMB_ADDR_NOT_USE_D
371 write32 PMB_ADDR_ENTRY11, PMB_ADDR_NOT_USE_D
372 write32 PMB_ADDR_ENTRY12, PMB_ADDR_NOT_USE_D
373 write32 PMB_ADDR_ENTRY13, PMB_ADDR_NOT_USE_D
374 write32 PMB_ADDR_ENTRY14, PMB_ADDR_NOT_USE_D
375 write32 PMB_ADDR_ENTRY15, PMB_ADDR_NOT_USE_D
376
377 write32 PASCR_A, PASCR_INIT
378 mov.l DUMMY_ADDR, r0
379 icbi @r0
380#endif /* if defined(CONFIG_SH_32BIT) */
381
382exit_pmb:
383 /* CPU is running on ILRAM? */
384 mov r14, r0
385 tst #1, r0
386 bt 1f
387
388 mov.l _stack_ilram, r15
389 mov.l _spiboot_main, r0
390100: bsrf r0
391 nop
392
393 .align 2
394_spiboot_main: .long (spiboot_main - (100b + 4))
395_stack_ilram: .long 0xe5204000
396
3971:
398 write32 CCR_A, CCR_D
399
400 rts
401 nop
402
403 .align 2
404
405#if defined(CONFIG_SH_32BIT)
406/*------- set PMB -------*/
407PMB_ADDR_SPIBOOT_A: .long PMB_ADDR_BASE(0)
408PMB_ADDR_DDR_N1_A: .long PMB_ADDR_BASE(1)
409PMB_ADDR_DDR_C1_A: .long PMB_ADDR_BASE(5)
410PMB_ADDR_ENTRY2: .long PMB_ADDR_BASE(2)
411PMB_ADDR_ENTRY3: .long PMB_ADDR_BASE(3)
412PMB_ADDR_ENTRY4: .long PMB_ADDR_BASE(4)
413PMB_ADDR_ENTRY6: .long PMB_ADDR_BASE(6)
414PMB_ADDR_ENTRY7: .long PMB_ADDR_BASE(7)
415PMB_ADDR_ENTRY8: .long PMB_ADDR_BASE(8)
416PMB_ADDR_ENTRY9: .long PMB_ADDR_BASE(9)
417PMB_ADDR_ENTRY10: .long PMB_ADDR_BASE(10)
418PMB_ADDR_ENTRY11: .long PMB_ADDR_BASE(11)
419PMB_ADDR_ENTRY12: .long PMB_ADDR_BASE(12)
420PMB_ADDR_ENTRY13: .long PMB_ADDR_BASE(13)
421PMB_ADDR_ENTRY14: .long PMB_ADDR_BASE(14)
422PMB_ADDR_ENTRY15: .long PMB_ADDR_BASE(15)
423
424PMB_ADDR_SPIBOOT_D: .long mk_pmb_addr_val(0xa0)
425PMB_ADDR_DDR_C1_D: .long mk_pmb_addr_val(0x88)
426PMB_ADDR_DDR_N1_D: .long mk_pmb_addr_val(0xa8)
427PMB_ADDR_NOT_USE_D: .long 0x00000000
428
429PMB_DATA_SPIBOOT_A: .long PMB_DATA_BASE(0)
430PMB_DATA_DDR_N1_A: .long PMB_DATA_BASE(1)
431PMB_DATA_DDR_C1_A: .long PMB_DATA_BASE(5)
432
433/* ppn ub v s1 s0 c wt */
434PMB_DATA_SPIBOOT_D: .long mk_pmb_data_val(0x00, 0, 1, 1, 0, 0, 1)
435PMB_DATA_DDR_C1_D: .long mk_pmb_data_val(0x48, 0, 1, 1, 0, 1, 1)
436PMB_DATA_DDR_N1_D: .long mk_pmb_data_val(0x48, 1, 1, 1, 0, 0, 1)
437
438PASCR_A: .long 0xff000070
439DUMMY_ADDR: .long 0xa0000000
440PASCR_29BIT_D: .long 0x00000000
441PASCR_INIT: .long 0x80000080
442MMUCR_A: .long 0xff000010
443MMUCR_D: .long 0x00000004 /* clear ITLB */
444#endif /* CONFIG_SH_32BIT */
445
446CCR_A: .long CCR
447CCR_D: .long CCR_CACHE_INIT
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