Subversion Repositories HelenOS

Rev

Rev 4153 | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 4153 Rev 4718
1 
#
 1 
#
2 
# Copyright (c) 2007 Michal Kebrt
 2 
# Copyright (c) 2007 Michal Kebrt
3 
# All rights reserved.
 3 
# All rights reserved.
4 
#
 4 
#
5 
# Redistribution and use in source and binary forms, with or without
 5 
# Redistribution and use in source and binary forms, with or without
6 
# modification, are permitted provided that the following conditions
 6 
# modification, are permitted provided that the following conditions
7 
# are met:
 7 
# are met:
8 
#
 8 
#
9 
# - Redistributions of source code must retain the above copyright
 9 
# - Redistributions of source code must retain the above copyright
10 
#   notice, this list of conditions and the following disclaimer.
 10 
#   notice, this list of conditions and the following disclaimer.
11 
# - Redistributions in binary form must reproduce the above copyright
 11 
# - Redistributions in binary form must reproduce the above copyright
12 
#   notice, this list of conditions and the following disclaimer in the
 12 
#   notice, this list of conditions and the following disclaimer in the
13 
#   documentation and/or other materials provided with the distribution.
 13 
#   documentation and/or other materials provided with the distribution.
14 
# - The name of the author may not be used to endorse or promote products
 14 
# - The name of the author may not be used to endorse or promote products
15 
#   derived from this software without specific prior written permission.
 15 
#   derived from this software without specific prior written permission.
16 
#
 16 
#
17 
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 17 
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 18 
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 19 
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 20 
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 21 
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 22 
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 23 
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 24 
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 25 
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 26 
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 
#
 27 
#
28 
 
 28 
 
29 
#include <arch/asm/boot.h>
 29 
#include <arch/asm/boot.h>
30 
 
 30 
 
31 
.text
 31 
.text
32 
 
 32 
 
33 
.global kernel_image_start
 33 
.global kernel_image_start
34 
.global exc_stack
 34 
.global exc_stack
35 
.global supervisor_sp
 35 
.global supervisor_sp
36 
 
 36 
 
37 
kernel_image_start:
 37 
kernel_image_start:
- 
 
 38 
 
- 
 
 39 
	# initialize Stack pointer for exception modes
- 
 
 40 
	mrs r4, cpsr
- 
 
 41 
	bic r4, r4, #0x1f
38
42 
 
- 
 
 43 
	#FIQ Mode
- 
 
 44 
	orr r3, r4, #0x11
- 
 
 45 
	msr cpsr_c, r3
- 
 
 46 
	ldr sp, =exc_stack
- 
 
 47 
 
- 
 
 48 
	#IRQ Mode
- 
 
 49 
	orr r3, r4, #0x12
- 
 
 50 
	msr cpsr_c, r3
- 
 
 51 
	ldr sp, =exc_stack
- 
 
 52 
 
- 
 
 53 
	#ABORT Mode
- 
 
 54 
	orr r3, r4, #0x17
- 
 
 55 
	msr cpsr_c, r3
- 
 
 56 
	ldr sp, =exc_stack
- 
 
 57 
 
- 
 
 58 
	#UNDEFINED Mode
- 
 
 59 
	orr r3, r4, #0x1b
- 
 
 60 
	msr cpsr_c, r3
- 
 
 61 
	ldr sp, =exc_stack
- 
 
 62 
 
39 
	# switch to supervisor mode
 63 
	# switch to supervisor mode
40 
	mrs r3, cpsr
 - 
 
41 
	bic r3, r3, #0x1f
 - 
 
42 
	orr r3, r3, #0x13
 64 
	orr r3, r4, #0x13
43 
	msr cpsr_c, r3
 65 
	msr cpsr_c, r3
44
66
45 
	ldr sp, =temp_stack
 67 
	ldr sp, =temp_stack
46
68
47 
	bl arch_pre_main
 69 
	bl arch_pre_main
48
70
49 
	bl main_bsp
 71 
	bl main_bsp
50 
 
 72 
 
51 
	.space TEMP_STACK_SIZE
 73 
	.space TEMP_STACK_SIZE
52 
temp_stack:
 74 
temp_stack:
53 
 
 75 
 
54 
	.space 1024
 76 
	.space 1024
55 
exc_stack:
 77 
exc_stack:
56 
 
 78 
 
57 
supervisor_sp:
 79 
supervisor_sp:
58 
	.space 4
 80 
	.space 4
59 
 
 81