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
|
/*
* Copyright (c) 2011 Aeroflex Gaisler
*
* BSD license:
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#define LEON3_IO_AREA 0xfff00000
#define LEON3_CONF_AREA 0xff000
#define VENDOR_GAISLER 0x01
#define GAISLER_APBMST 0x006
#define GAISLER_APBUART 0x00C
#define GAISLER_GPTIMER 0x011
.text
/* ------- */
.weak cpuinit
.set cpuinit,_cpuinit
/* ------- */
!.global cpuinit
_cpuinit:
mov %o7,%g6
mov %psr, %l3
srl %l3, 24, %g5
and %g5, 0xf, %g5
subcc %g5, 3, %0
be 1f
/* other versions */
ba 2f
! ####### leon3 #########
1: set 0x01, %o0 !VENDOR_GAISLER
set 0x006, %o1 !GAISLER_APBMST
call ahbslv_scan
nop
cmp %g0,%o0
be 2f
nop
ld [%o0+16],%g1
set 0xfff00000,%o0 !LEON3_IO_AREA
and %g1,%o0,%g1 !g1: apb base
set 0xff000,%o0 !LEON3_CONF_AREA
or %g1,%o0,%g2 !g2: apb conf base
! ####### uart #########
mov %g2,%o0
set 0x01 , %o1 ! VENDOR_GAISLER
set 0x00C,%o2 ! GAISLER_APBUART
call apbslv_scan
nop
cmp %g0,%o0
be 2f
nop
call iobar_getbase
mov %g1,%o1
set console, %g5
st %o1,[%g5] !uart base address
! ####### timer #########
mov %g2,%o0
set 0x01 , %o1 !VENDOR_GAISLER
set 0x011,%o2 !GAISLER_GPTIMER
call apbslv_scan
nop
cmp %g0,%o0
be 2f
nop
call iobar_getbase
mov %g1,%o1
add %o1,0x10,%o1
set rtc, %g5
st %o1,[%g5]
! ################
mov %g2,%o0
set 0x01 , %o1 !VENDOR_GAISLER
set 0x00D,%o2 !GAISLER_IRQMP
call apbslv_scan
nop
cmp %g0,%o0
be 2f
nop
call iobar_getbase
mov %g1,%o1
set irqmp, %g5
st %o1,[%g5]
ld [%o1+0x10], %o2
srl %o2, 16, %o2
and %o2, 15, %o2
st %o2,[%g5+4]
! ################
2: mov %g6,%o7
retl
nop
! force link of jiffies_64
.global jiffies_64
3: set jiffies_64,%g1
.data
.global irqmp
irqmp: .word 0 ! IRQMP base address
.word 0 ! extended irq number
.text
|
