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
|
/*
* Copyright (c) 2010-2013 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#include <rtems/asm.h>
#include <bspopts.h>
#include <libcpu/powerpc-utility.h>
.globl _start
.globl virtex_exc_vector_base
.section ".bsp_start_text", "ax"
virtex_exc_vector_base:
b _start
/* Critical Input 0x0100 */
/* Machine Check 0x0200 */
/* Data Storage 0x0300 */
/* Instruction Storage 0x0400 */
/* External 0x0500 */
/* Alignment 0x0600 */
/* Program 0x0700 */
/* FPU Unavailable 0x0800 */
/* System Call 0x0C00 */
/* APU Unavailable 0x0F20 */
/* Programmable-Interval Timer 0x1000 */
/* Fixed-Interval Timer 0x1010 */
/* Watchdog Timer 0x1020 */
/* Data TLB Miss 0x1100 */
/* Instruction TLB Miss 0x1200 */
/* Debug 0x2000 */
.rept 0x2000 / 4 - 1
b twiddle
.endr
/* Start stack area */
.rept BSP_START_STACK_SIZE / 4
b twiddle
.endr
_start:
/* Reset time base */
li r0, 0
mtspr TBWU, r0
mtspr TBWL, r0
/* Initialize start stack */
LWI r1, _start
stwu r0, -4(r1)
stwu r0, -4(r1)
/* Copy fast text */
LWI r3, bsp_section_fast_text_begin
LWI r4, bsp_section_fast_text_load_begin
LWI r5, bsp_section_fast_text_size
bl copy
/* Copy fast data */
LWI r3, bsp_section_fast_data_begin
LWI r4, bsp_section_fast_data_load_begin
LWI r5, bsp_section_fast_data_size
bl copy
/* Clear SBSS */
LWI r3, bsp_section_sbss_begin
LWI r4, bsp_section_sbss_size
bl bsp_start_zero
/* Clear BSS */
LWI r3, bsp_section_bss_begin
LWI r4, bsp_section_bss_size
bl bsp_start_zero
/* Set up EABI and SYSV environment */
bl __eabi
/* Clear command line */
li r3, 0
bl boot_card
twiddle:
bl bsp_reset
b twiddle
copy:
cmpw r3, r4
beqlr
b memcpy
/* Reset entry */
.section ".virtex_reset", "ax"
jump_to_start:
LWI r3, _start
mtctr r3
bctr
b jump_to_start
|
