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
|
/*
* modified from SH-IPL+g (init-r0p751rlc0011rl.S)
* Initial Register Data for R0P751RLC0011RL (SH7751R 240MHz/120MHz/60MHz)
* Coyright (c) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
*/
#include <config.h>
#include <version.h>
#include <asm/processor.h>
#include <asm/macro.h>
.global lowlevel_init
.text
.align 2
lowlevel_init:
write32 CCR_A, CCR_D_D
write32 MMUCR_A, MMUCR_D
write32 BCR1_A, BCR1_D
write16 BCR2_A, BCR2_D
write16 BCR3_A, BCR3_D
write32 BCR4_A, BCR4_D
write32 WCR1_A, WCR1_D
write32 WCR2_A, WCR2_D
write32 WCR3_A, WCR3_D
write16 PCR_A, PCR_D
write16 LED_A, #0xff
write32 MCR_A, MCR_D1
write16 RTCNT_A, RTCNT_D
write16 RTCOR_A, RTCOR_D
write16 RFCR_A, RFCR_D
write16 RTCSR_A, RTCSR_D
write8 SDMR3_A, #0x55
/* Wait DRAM refresh 30 times */
mov.l RFCR_A, r1
mov #30, r3
1:
mov.w @r1, r0
extu.w r0, r2
cmp/hi r3, r2
bf 1b
write32 MCR_A, MCR_D2
write8 SDMR3_A, #0
write32 IRLMASK_A, IRLMASK_D
write32 CCR_A, CCR_D_E
rts
nop
.align 2
CCR_A: .long CCR /* Cache Control Register */
CCR_D_D: .long 0x0808 /* Flush the cache, disable */
CCR_D_E: .long 0x8000090B
FRQCR_A: .long FRQCR /* FRQCR Address */
FRQCR_D: .long 0x00000e0a /* 03/07/15 modify */
BCR1_A: .long BCR1 /* BCR1 Address */
BCR1_D: .long 0x00180008
BCR2_A: .long BCR2 /* BCR2 Address */
BCR2_D: .long 0xabe8
BCR3_A: .long BCR3 /* BCR3 Address */
BCR3_D: .long 0x0000
BCR4_A: .long BCR4 /* BCR4 Address */
BCR4_D: .long 0x00000010
WCR1_A: .long WCR1 /* WCR1 Address */
WCR1_D: .long 0x33343333
WCR2_A: .long WCR2 /* WCR2 Address */
WCR2_D: .long 0xcff86fbf
WCR3_A: .long WCR3 /* WCR3 Address */
WCR3_D: .long 0x07777707
LED_A: .long 0x04000036 /* LED Address */
RTCNT_A: .long RTCNT /* RTCNT Address */
RTCNT_D: .long 0xA500 /* RTCNT Write Code A5h Data 00h */
RTCOR_A: .long RTCOR /* RTCOR Address */
RTCOR_D: .long 0xA534 /* RTCOR Write Code */
RTCSR_A: .long RTCSR /* RTCSR Address */
RTCSR_D: .long 0xA510 /* RTCSR Write Code */
SDMR3_A: .long 0xFF9400CC /* SDMR3 Address */
SDMR3_D: .long 0x55
MCR_A: .long MCR /* MCR Address */
MCR_D1: .long 0x081901F4 /* MRSET:'0' */
MCR_D2: .long 0x481901F4 /* MRSET:'1' */
RFCR_A: .long RFCR /* RFCR Address */
RFCR_D: .long 0xA400 /* RFCR Write Code A4h Data 00h */
PCR_A: .long PCR /* PCR Address */
PCR_D: .long 0x0000
MMUCR_A: .long MMUCR /* MMUCCR Address */
MMUCR_D: .long 0x00000000 /* MMUCCR Data */
IRLMASK_A: .long 0xA4000000 /* IRLMASK Address */
IRLMASK_D: .long 0x00000000 /* IRLMASK Data */
|
