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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 7802a4495f3c2db09b125a4963f4328b95a38429 / . / board / renesas / sh7753evb / lowlevel_init.S
blob: 901e9eb64887254ea93dedf68642975351022a4b [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -0400[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0+ */
Yoshihiro Shimoda320cf352013-12-18 16:03:44 +0900[diff] [blame]2/*
3 * Copyright (C) 2013 Renesas Solutions Corp.
Yoshihiro Shimoda320cf352013-12-18 16:03:44 +0900[diff] [blame]4 */
5
6#include <config.h>
Yoshihiro Shimoda320cf352013-12-18 16:03:44 +0900[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 mov #0, r14
29 mova 2f, r0
30 mov.l PC_MASK, r1
31 tst r0, r1
32 bf 2f
33
34 bra exit_pmb
35 nop
36
37 .align 2
38
39/* If CPU runs on SDRAM (PC=0x5???????) or not. */
40PC_MASK: .long 0x20000000
41
422:
43 mov #1, r14
44
45 mov.l EXPEVT_A, r0
46 mov.l @r0, r0
47 mov.l EXPEVT_POWER_ON_RESET, r1
48 cmp/eq r0, r1
49 bt 1f
50
51 /*
52 * If EXPEVT value is manual reset or tlb multipul-hit,
53 * initialization of DBSC3 is not necessary.
54 */
55 bra exit_ddr
56 nop
57
581:
59 /*------- Reset -------*/
60 write32 MRSTCR0_A, MRSTCR0_D
61 write32 MRSTCR1_A, MRSTCR1_D
62
63 /* For Core Reset */
64 mov.l DBACEN_A, r0
65 mov.l @r0, r0
66 cmp/eq #0, r0
67 bt 3f
68
69 /*
70 * If DBACEN == 1(DBSC was already enabled), we have to avoid the
71 * initialization of DDR3-SDRAM.
72 */
73 bra exit_ddr
74 nop
75
763:
77 /*------- DBSC3 -------*/
78 /* oscillation stabilization time */
79 wait_timer WAIT_OSC_TIME
80
81 /* step 3 */
82 write32 DBKIND_A, DBKIND_D
83
84 /* step 4 */
85 write32 DBCONF_A, DBCONF_D
86 write32 DBTR0_A, DBTR0_D
87 write32 DBTR1_A, DBTR1_D
88 write32 DBTR2_A, DBTR2_D
89 write32 DBTR3_A, DBTR3_D
90 write32 DBTR4_A, DBTR4_D
91 write32 DBTR5_A, DBTR5_D
92 write32 DBTR6_A, DBTR6_D
93 write32 DBTR7_A, DBTR7_D
94 write32 DBTR8_A, DBTR8_D
95 write32 DBTR9_A, DBTR9_D
96 write32 DBTR10_A, DBTR10_D
97 write32 DBTR11_A, DBTR11_D
98 write32 DBTR12_A, DBTR12_D
99 write32 DBTR13_A, DBTR13_D
100 write32 DBTR14_A, DBTR14_D
101 write32 DBTR15_A, DBTR15_D
102 write32 DBTR16_A, DBTR16_D
103 write32 DBTR17_A, DBTR17_D
104 write32 DBTR18_A, DBTR18_D
105 write32 DBTR19_A, DBTR19_D
106 write32 DBRNK0_A, DBRNK0_D
107 write32 DBADJ0_A, DBADJ0_D
108 write32 DBADJ2_A, DBADJ2_D
109
110 /* step 5 */
111 write32 DBCMD_A, DBCMD_RSTL_VAL
112 wait_timer WAIT_30US
113
114 /* step 6 */
115 write32 DBCMD_A, DBCMD_PDEN_VAL
116
117 /* step 7 */
118 write32 DBPDCNT3_A, DBPDCNT3_D
119
120 /* step 8 */
121 write32 DBPDCNT1_A, DBPDCNT1_D
122 write32 DBPDCNT2_A, DBPDCNT2_D
123 write32 DBPDLCK_A, DBPDLCK_D
124 write32 DBPDRGA_A, DBPDRGA_D
125 write32 DBPDRGD_A, DBPDRGD_D
126
127 /* step 9 */
128 wait_timer WAIT_30US
129
130 /* step 10 */
131 write32 DBPDCNT0_A, DBPDCNT0_D
132
133 /* step 11 */
134 wait_timer WAIT_30US
135 wait_timer WAIT_30US
136
137 /* step 12 */
138 write32 DBCMD_A, DBCMD_WAIT_VAL
139 wait_DBCMD
140
141 /* step 13 */
142 write32 DBCMD_A, DBCMD_RSTH_VAL
143 wait_DBCMD
144
145 /* step 14 */
146 write32 DBCMD_A, DBCMD_WAIT_VAL
147 write32 DBCMD_A, DBCMD_WAIT_VAL
148 write32 DBCMD_A, DBCMD_WAIT_VAL
149 write32 DBCMD_A, DBCMD_WAIT_VAL
150
151 /* step 15 */
152 write32 DBCMD_A, DBCMD_PDXT_VAL
153
154 /* step 16 */
155 write32 DBCMD_A, DBCMD_MRS2_VAL
156
157 /* step 17 */
158 write32 DBCMD_A, DBCMD_MRS3_VAL
159
160 /* step 18 */
161 write32 DBCMD_A, DBCMD_MRS1_VAL
162
163 /* step 19 */
164 write32 DBCMD_A, DBCMD_MRS0_VAL
165 write32 DBPDNCNF_A, DBPDNCNF_D
166
167 /* step 20 */
168 write32 DBCMD_A, DBCMD_ZQCL_VAL
169
170 write32 DBCMD_A, DBCMD_REF_VAL
171 write32 DBCMD_A, DBCMD_REF_VAL
172 wait_DBCMD
173
174 /* step 21 */
175 write32 DBCALTR_A, DBCALTR_D
176
177 /* step 22 */
178 write32 DBRFCNF0_A, DBRFCNF0_D
179 write32 DBRFCNF1_A, DBRFCNF1_D
180 write32 DBRFCNF2_A, DBRFCNF2_D
181
182 /* step 23 */
183 write32 DBCALCNF_A, DBCALCNF_D
184
185 /* step 24 */
186 write32 DBRFEN_A, DBRFEN_D
187 write32 DBCMD_A, DBCMD_SRXT_VAL
188
189 /* step 25 */
190 write32 DBACEN_A, DBACEN_D
191
192 /* step 26 */
193 wait_DBCMD
194
195 bra exit_ddr
196 nop
197
198 .align 2
199
200EXPEVT_A: .long 0xff000024
201EXPEVT_POWER_ON_RESET: .long 0x00000000
202
203/*------- Reset -------*/
204MRSTCR0_A: .long 0xffd50030
205MRSTCR0_D: .long 0xfe1ffe7f
206MRSTCR1_A: .long 0xffd50034
207MRSTCR1_D: .long 0xfff3ffff
208
209/*------- DBSC3 -------*/
210DBCMD_A: .long 0xfe800018
211DBKIND_A: .long 0xfe800020
212DBCONF_A: .long 0xfe800024
213DBTR0_A: .long 0xfe800040
214DBTR1_A: .long 0xfe800044
215DBTR2_A: .long 0xfe800048
216DBTR3_A: .long 0xfe800050
217DBTR4_A: .long 0xfe800054
218DBTR5_A: .long 0xfe800058
219DBTR6_A: .long 0xfe80005c
220DBTR7_A: .long 0xfe800060
221DBTR8_A: .long 0xfe800064
222DBTR9_A: .long 0xfe800068
223DBTR10_A: .long 0xfe80006c
224DBTR11_A: .long 0xfe800070
225DBTR12_A: .long 0xfe800074
226DBTR13_A: .long 0xfe800078
227DBTR14_A: .long 0xfe80007c
228DBTR15_A: .long 0xfe800080
229DBTR16_A: .long 0xfe800084
230DBTR17_A: .long 0xfe800088
231DBTR18_A: .long 0xfe80008c
232DBTR19_A: .long 0xfe800090
233DBRNK0_A: .long 0xfe800100
234DBPDCNT0_A: .long 0xfe800200
235DBPDCNT1_A: .long 0xfe800204
236DBPDCNT2_A: .long 0xfe800208
237DBPDCNT3_A: .long 0xfe80020c
238DBPDLCK_A: .long 0xfe800280
239DBPDRGA_A: .long 0xfe800290
240DBPDRGD_A: .long 0xfe8002a0
241DBADJ0_A: .long 0xfe8000c0
242DBADJ2_A: .long 0xfe8000c8
243DBRFCNF0_A: .long 0xfe8000e0
244DBRFCNF1_A: .long 0xfe8000e4
245DBRFCNF2_A: .long 0xfe8000e8
246DBCALCNF_A: .long 0xfe8000f4
247DBRFEN_A: .long 0xfe800014
248DBACEN_A: .long 0xfe800010
249DBWAIT_A: .long 0xfe80001c
250DBCALTR_A: .long 0xfe8000f8
251DBPDNCNF_A: .long 0xfe800180
252
253WAIT_OSC_TIME: .long 6000
254WAIT_30US: .long 13333
255
256DBCMD_RSTL_VAL: .long 0x20000000
257DBCMD_PDEN_VAL: .long 0x1000d73c
258DBCMD_WAIT_VAL: .long 0x0000d73c
259DBCMD_RSTH_VAL: .long 0x2100d73c
260DBCMD_PDXT_VAL: .long 0x110000c8
261DBCMD_MRS0_VAL: .long 0x28000930
262DBCMD_MRS1_VAL: .long 0x29000004
263DBCMD_MRS2_VAL: .long 0x2a000008
264DBCMD_MRS3_VAL: .long 0x2b000000
265DBCMD_ZQCL_VAL: .long 0x03000200
266DBCMD_REF_VAL: .long 0x0c000000
267DBCMD_SRXT_VAL: .long 0x19000000
268DBKIND_D: .long 0x00000007
269DBCONF_D: .long 0x0f030a01
270DBTR0_D: .long 0x00000007
271DBTR1_D: .long 0x00000006
272DBTR2_D: .long 0x00000000
273DBTR3_D: .long 0x00000007
274DBTR4_D: .long 0x00070007
275DBTR5_D: .long 0x0000001b
276DBTR6_D: .long 0x00000014
277DBTR7_D: .long 0x00000004
278DBTR8_D: .long 0x00000014
279DBTR9_D: .long 0x00000004
280DBTR10_D: .long 0x00000008
281DBTR11_D: .long 0x00000007
282DBTR12_D: .long 0x0000000e
283DBTR13_D: .long 0x000000a0
284DBTR14_D: .long 0x00060006
285DBTR15_D: .long 0x00000003
286DBTR16_D: .long 0x00160002
287DBTR17_D: .long 0x000c0000
288DBTR18_D: .long 0x00000200
289DBTR19_D: .long 0x00000040
290DBRNK0_D: .long 0x00000001
291DBPDCNT0_D: .long 0x00000001
292DBPDCNT1_D: .long 0x00000001
293DBPDCNT2_D: .long 0x00000000
294DBPDCNT3_D: .long 0x00004010
295DBPDLCK_D: .long 0x0000a55a
296DBPDRGA_D: .long 0x00000028
297DBPDRGD_D: .long 0x00017100
298
299DBADJ0_D: .long 0x00010000
300DBADJ2_D: .long 0x18061806
301DBRFCNF0_D: .long 0x000001ff
302DBRFCNF1_D: .long 0x00081040
303DBRFCNF2_D: .long 0x00000000
304DBCALCNF_D: .long 0x0000ffff
305DBRFEN_D: .long 0x00000001
306DBACEN_D: .long 0x00000001
307DBCALTR_D: .long 0x08200820
308DBPDNCNF_D: .long 0x00000001
309
310 .align 2
311exit_ddr:
312#if defined(CONFIG_SH_32BIT)
313 /*------- set PMB -------*/
314 write32 PASCR_A, PASCR_29BIT_D
315 write32 MMUCR_A, MMUCR_D
316
317 /*****************************************************************
318 * ent virt phys v sz c wt
319 * 0 0xa0000000 0x00000000 1 128M 0 1
320 * 1 0xa8000000 0x48000000 1 128M 0 1
321 * 5 0x88000000 0x48000000 1 128M 1 1
322 */
323 write32 PMB_ADDR_SPIBOOT_A, PMB_ADDR_SPIBOOT_D
324 write32 PMB_DATA_SPIBOOT_A, PMB_DATA_SPIBOOT_D
325 write32 PMB_ADDR_DDR_C1_A, PMB_ADDR_DDR_C1_D
326 write32 PMB_DATA_DDR_C1_A, PMB_DATA_DDR_C1_D
327 write32 PMB_ADDR_DDR_N1_A, PMB_ADDR_DDR_N1_D
328 write32 PMB_DATA_DDR_N1_A, PMB_DATA_DDR_N1_D
329
330 write32 PMB_ADDR_ENTRY2, PMB_ADDR_NOT_USE_D
331 write32 PMB_ADDR_ENTRY3, PMB_ADDR_NOT_USE_D
332 write32 PMB_ADDR_ENTRY4, PMB_ADDR_NOT_USE_D
333 write32 PMB_ADDR_ENTRY6, PMB_ADDR_NOT_USE_D
334 write32 PMB_ADDR_ENTRY7, PMB_ADDR_NOT_USE_D
335 write32 PMB_ADDR_ENTRY8, PMB_ADDR_NOT_USE_D
336 write32 PMB_ADDR_ENTRY9, PMB_ADDR_NOT_USE_D
337 write32 PMB_ADDR_ENTRY10, PMB_ADDR_NOT_USE_D
338 write32 PMB_ADDR_ENTRY11, PMB_ADDR_NOT_USE_D
339 write32 PMB_ADDR_ENTRY12, PMB_ADDR_NOT_USE_D
340 write32 PMB_ADDR_ENTRY13, PMB_ADDR_NOT_USE_D
341 write32 PMB_ADDR_ENTRY14, PMB_ADDR_NOT_USE_D
342 write32 PMB_ADDR_ENTRY15, PMB_ADDR_NOT_USE_D
343
344 write32 PASCR_A, PASCR_INIT
345 mov.l DUMMY_ADDR, r0
346 icbi @r0
347#endif /* if defined(CONFIG_SH_32BIT) */
348
349exit_pmb:
350 /* CPU is running on ILRAM? */
351 mov r14, r0
352 tst #1, r0
353 bt 1f
354
355 mov.l _stack_ilram, r15
356 mov.l _spiboot_main, r0
357100: bsrf r0
358 nop
359
360 .align 2
361_spiboot_main: .long (spiboot_main - (100b + 4))
362_stack_ilram: .long 0xe5204000
363
3641:
365 write32 CCR_A, CCR_D
366
367 rts
368 nop
369
370 .align 2
371
372#if defined(CONFIG_SH_32BIT)
373/*------- set PMB -------*/
374PMB_ADDR_SPIBOOT_A: .long PMB_ADDR_BASE(0)
375PMB_ADDR_DDR_N1_A: .long PMB_ADDR_BASE(1)
376PMB_ADDR_DDR_C1_A: .long PMB_ADDR_BASE(5)
377PMB_ADDR_ENTRY2: .long PMB_ADDR_BASE(2)
378PMB_ADDR_ENTRY3: .long PMB_ADDR_BASE(3)
379PMB_ADDR_ENTRY4: .long PMB_ADDR_BASE(4)
380PMB_ADDR_ENTRY6: .long PMB_ADDR_BASE(6)
381PMB_ADDR_ENTRY7: .long PMB_ADDR_BASE(7)
382PMB_ADDR_ENTRY8: .long PMB_ADDR_BASE(8)
383PMB_ADDR_ENTRY9: .long PMB_ADDR_BASE(9)
384PMB_ADDR_ENTRY10: .long PMB_ADDR_BASE(10)
385PMB_ADDR_ENTRY11: .long PMB_ADDR_BASE(11)
386PMB_ADDR_ENTRY12: .long PMB_ADDR_BASE(12)
387PMB_ADDR_ENTRY13: .long PMB_ADDR_BASE(13)
388PMB_ADDR_ENTRY14: .long PMB_ADDR_BASE(14)
389PMB_ADDR_ENTRY15: .long PMB_ADDR_BASE(15)
390
391PMB_ADDR_SPIBOOT_D: .long mk_pmb_addr_val(0xa0)
392PMB_ADDR_DDR_C1_D: .long mk_pmb_addr_val(0x88)
393PMB_ADDR_DDR_N1_D: .long mk_pmb_addr_val(0xa8)
394PMB_ADDR_NOT_USE_D: .long 0x00000000
395
396PMB_DATA_SPIBOOT_A: .long PMB_DATA_BASE(0)
397PMB_DATA_DDR_N1_A: .long PMB_DATA_BASE(1)
398PMB_DATA_DDR_C1_A: .long PMB_DATA_BASE(5)
399
400/* ppn ub v s1 s0 c wt */
401PMB_DATA_SPIBOOT_D: .long mk_pmb_data_val(0x00, 0, 1, 1, 0, 0, 1)
402PMB_DATA_DDR_C1_D: .long mk_pmb_data_val(0x48, 0, 1, 1, 0, 1, 1)
403PMB_DATA_DDR_N1_D: .long mk_pmb_data_val(0x48, 1, 1, 1, 0, 0, 1)
404
405PASCR_A: .long 0xff000070
406DUMMY_ADDR: .long 0xa0000000
407PASCR_29BIT_D: .long 0x00000000
408PASCR_INIT: .long 0x80000080
409MMUCR_A: .long 0xff000010
410MMUCR_D: .long 0x00000004 /* clear ITLB */
411#endif /* CONFIG_SH_32BIT */
412
413CCR_A: .long CCR
414CCR_D: .long CCR_CACHE_INIT