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
|
/*
* Copyright (C) 2007
* Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
*
* Copyright (C) 2007
* Kenati Technologies, Inc.
*
* board/ms7722se/lowlevel_init.S
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#include <asm/processor.h>
#include <asm/macro.h>
/*
* Board specific low level init code, called _very_ early in the
* startup sequence. Relocation to SDRAM has not happened yet, no
* stack is available, bss section has not been initialised, etc.
*
* (Note: As no stack is available, no subroutines can be called...).
*/
.global lowlevel_init
.text
.align 2
lowlevel_init:
/*
* Cache Control Register
* Instruction Cache Invalidate
*/
write32 CCR_A, CCR_D
/*
* Address of MMU Control Register
* TI == TLB Invalidate bit
*/
write32 MMUCR_A, MMUCR_D
/* Address of Power Control Register 0 */
write32 MSTPCR0_A, MSTPCR0_D
/* Address of Power Control Register 2 */
write32 MSTPCR2_A, MSTPCR2_D
write16 SBSCR_A, SBSCR_D
write16 PSCR_A, PSCR_D
/* 0xA4520004 (Watchdog Control / Status Register) */
! write16 RWTCSR_A, RWTCSR_D_1 /* 0xA507 -> timer_STOP/WDT_CLK=max */
/* 0xA4520000 (Watchdog Count Register) */
write16 RWTCNT_A, RWTCNT_D /*0x5A00 -> Clear */
/* 0xA4520004 (Watchdog Control / Status Register) */
write16 RWTCSR_A, RWTCSR_D_2 /* 0xA504 -> timer_STOP/CLK=500ms */
/* 0xA4150000 Frequency control register */
write32 FRQCR_A, FRQCR_D
write32 CCR_A, CCR_D_2
bsc_init:
write16 PSELA_A, PSELA_D
write16 DRVCR_A, DRVCR_D
write16 PCCR_A, PCCR_D
write16 PECR_A, PECR_D
write16 PJCR_A, PJCR_D
write16 PXCR_A, PXCR_D
write32 CMNCR_A, CMNCR_D
write32 CS0BCR_A, CS0BCR_D
write32 CS2BCR_A, CS2BCR_D
write32 CS4BCR_A, CS4BCR_D
write32 CS5ABCR_A, CS5ABCR_D
write32 CS5BBCR_A, CS5BBCR_D
write32 CS6ABCR_A, CS6ABCR_D
write32 CS0WCR_A, CS0WCR_D
write32 CS2WCR_A, CS2WCR_D
write32 CS4WCR_A, CS4WCR_D
write32 CS5AWCR_A, CS5AWCR_D
write32 CS5BWCR_A, CS5BWCR_D
write32 CS6AWCR_A, CS6AWCR_D
! SDRAM initialization
write32 SDCR_A, SDCR_D
write32 SDWCR_A, SDWCR_D
write32 SDPCR_A, SDPCR_D
write32 RTCOR_A, RTCOR_D
write32 RTCSR_A, RTCSR_D
write8 SDMR3_A, SDMR3_D
! BL bit off (init = ON) (?!?)
stc sr, r0 ! BL bit off(init=ON)
mov.l SR_MASK_D, r1
and r1, r0
ldc r0, sr
rts
mov #0, r0
.align 2
CCR_A: .long CCR
MMUCR_A: .long MMUCR
MSTPCR0_A: .long MSTPCR0
MSTPCR2_A: .long MSTPCR2
SBSCR_A: .long SBSCR
PSCR_A: .long PSCR
RWTCSR_A: .long RWTCSR
RWTCNT_A: .long RWTCNT
FRQCR_A: .long FRQCR
CCR_D: .long 0x00000800
CCR_D_2: .long 0x00000103
MMUCR_D: .long 0x00000004
MSTPCR0_D: .long 0x00001001
MSTPCR2_D: .long 0xffffffff
FRQCR_D: .long 0x07022538
PSELA_A: .long 0xa405014E
PSELA_D: .word 0x0A10
.align 2
DRVCR_A: .long 0xa405018A
DRVCR_D: .word 0x0554
.align 2
PCCR_A: .long 0xa4050104
PCCR_D: .word 0x8800
.align 2
PECR_A: .long 0xa4050108
PECR_D: .word 0x0000
.align 2
PJCR_A: .long 0xa4050110
PJCR_D: .word 0x1000
.align 2
PXCR_A: .long 0xa4050148
PXCR_D: .word 0x0AAA
.align 2
CMNCR_A: .long CMNCR
CMNCR_D: .long 0x00000013
CS0BCR_A: .long CS0BCR ! Flash bank 1
CS0BCR_D: .long 0x24920400
CS2BCR_A: .long CS2BCR ! SRAM
CS2BCR_D: .long 0x24920400
CS4BCR_A: .long CS4BCR ! FPGA, PCMCIA, USB, ext slot
CS4BCR_D: .long 0x24920400
CS5ABCR_A: .long CS5ABCR ! Ext slot
CS5ABCR_D: .long 0x24920400
CS5BBCR_A: .long CS5BBCR ! USB controller
CS5BBCR_D: .long 0x24920400
CS6ABCR_A: .long CS6ABCR ! Ethernet
CS6ABCR_D: .long 0x24920400
CS0WCR_A: .long CS0WCR
CS0WCR_D: .long 0x00000300
CS2WCR_A: .long CS2WCR
CS2WCR_D: .long 0x00000300
CS4WCR_A: .long CS4WCR
CS4WCR_D: .long 0x00000300
CS5AWCR_A: .long CS5AWCR
CS5AWCR_D: .long 0x00000300
CS5BWCR_A: .long CS5BWCR
CS5BWCR_D: .long 0x00000300
CS6AWCR_A: .long CS6AWCR
CS6AWCR_D: .long 0x00000300
SDCR_A: .long SBSC_SDCR
SDCR_D: .long 0x00020809
SDWCR_A: .long SBSC_SDWCR
SDWCR_D: .long 0x00164d0d
SDPCR_A: .long SBSC_SDPCR
SDPCR_D: .long 0x00000087
RTCOR_A: .long SBSC_RTCOR
RTCOR_D: .long 0xA55A0034
RTCSR_A: .long SBSC_RTCSR
RTCSR_D: .long 0xA55A0010
SDMR3_A: .long 0xFE500180
SDMR3_D: .long 0x0
.align 1
SBSCR_D: .word 0x0040
PSCR_D: .word 0x0000
RWTCSR_D_1: .word 0xA507
RWTCSR_D_2: .word 0xA507
RWTCNT_D: .word 0x5A00
.align 2
SR_MASK_D: .long 0xEFFFFF0F
|
