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
|
/*
* Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and
* Bernd Becker (becker@faw.uni-ulm.de)
*
* COPYRIGHT (c) 1997-1998, FAW Ulm, Germany
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Modified to reflect Hitachi EDK SH7045F:
* John M. Mills (jmills@tga.com)
* TGA Technologies, Inc.
* 100 Pinnacle Way, Suite 140
* Norcross, GA 30071 U.S.A.
*
*
* This modified file may be copied and distributed in accordance
* the above-referenced license. It is provided for critique and
* developmental purposes without any warranty nor representation
* by the authors or by TGA Technologies.
*
* COPYRIGHT (c) 1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <rtems/asm.h>
BEGIN_CODE
PUBLIC(start)
SYM (start):
! install the stack pointer
mov.l stack_k,r15
#ifdef START_HW_INIT /* from $RTEMS_BSP.cfg */
! Initialize minimal hardware
mov.l hw_init_k, r0
jsr @r0
nop !dead slot
#endif /* START_HW_INIT */
! zero out bss
mov.l edata_k,r0
mov.l end_k,r1
mov #0,r2
0:
mov.l r2,@r0
add #4,r0
cmp/ge r0,r1
bt 0b
! copy the vector table from rom to ram
mov.l vects_k,r0 ! vectab
mov #0,r1 ! address of boot vector table
mov #0,r2 ! number of bytes copied
mov.w vects_size,r3 ! size of entries in vectab
1:
mov.l @r1+,r4
mov.l r4,@r0
add #4,r0
add #1,r2
cmp/hi r3,r2
bf 1b
#ifndef STANDALONE_EVB
! overlay monitor vectors onto RTEMS table template
! code adapted from Hitachi EDK7045F User Manual: "Copyvect.s"
mova vects_k,r0
mov.l @r0, r1 ! Shadow vect tbl addr
stc vbr, r2 ! Original vect tbl addr
and #0, r0
mov r0, r4 ! 0 in r4 and r0
!trapa #32
or #0x80, r0
mov.l @(r0,r2), r3
mov.l r3, @(r0, r1)
mov r4, r0
!cpu addr err
or #0x24, r0
mov.l @(r0, r2), r3
mov.l r3, @(r0, r1)
mov r4, r0
!ill slot
or #0x18, r0
mov.l @(r0, r2), r3
mov.l r3, @(r0, r1)
mov r4, r0
!ill inst
or #0x10, r0
mov.l @(r0, r2), r3
mov.l r3, @(r0, r1)
mov r4, r0
!nmi
or #0x2c, r0
mov.l @(r0, r2), r3
mov.l r3, @(r0, r1)
mov r4, r0
!User brk
or #0x30, r0
mov.l @(r0, r2), r3
mov.l r3, @(r0, r1)
mov r4, r0
!sci0 err
or #0x80, r0
rotl r0
rotl r0
mov.l @(r0, r2), r3
mov.l r3, @(r0, r1)
mov r4, r0
!sci rx
or #0x81, r0
rotl r0
rotl r0
mov.l @(r0, r2), r3
mov.l r3, @(r0, r1)
stc vbr,r3 ! capture copy of monitor vbr
mov.l vbrtemp_k,r0
mov.l r3, @r0
mov.l vects_k,r0 ! point vbr to vectab
ldc r0,vbr
#endif /* ! STANDALONE_EVB */
! call the mainline
mov #0,r4 ! command line
mov.l main_k,r0
jsr @r0
nop
! call exit
mov r0,r4
mov.l exit_k,r0
jsr @r0
or r0,r0
mov.l vbrtemp_k,r0 ! restore original vbr
mov.l @r0,r3
ldc r3, vbr
trapa #13 ! UBR capture by monitor
nop !debug dead-slot target
END_CODE
.align 2
stack_k:
.long SYM(_ISR_Stack_area_end)
edata_k:
.long SYM(edata)
end_k:
.long SYM(end)
main_k:
.long SYM(boot_card)
exit_k:
.long SYM(exit)
#ifdef START_HW_INIT /* from $RTEMS_BSP.cfg */
hw_init_k:
.long SYM(early_hw_init)
#endif /* START_HW_INIT */
vbrtemp_k:
.long SYM(vbrtemp)
vects_k:
.long SYM(vectab)
vects_size:
.word 255
#ifdef __ELF__
.section .bss,"aw"
#else
.section .bss
#endif
SYM(vbrtemp):
.long 0x0
|