WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/sparc64/src/start.S


#
# Copyright (C) 2005 Jakub Jermar
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# - Redistributions of source code must retain the above copyright
#   notice, this list of conditions and the following disclaimer.
# - Redistributions in binary form must reproduce the above copyright
#   notice, this list of conditions and the following disclaimer in the
#   documentation and/or other materials provided with the distribution.
# - The name of the author may not be used to endorse or promote products
#   derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
 
#include <arch/boot/boot.h>
#include <arch/register.h>
 
.register %g2, #scratch
.register %g3, #scratch
.register %g6, #scratch
.register %g7, #scratch
 
.section K_TEXT_START, "ax"
 
/*
 * Here is where the kernel is passed control.
 
 
 */
 
.global kernel_image_start
kernel_image_start:
	flushw				! flush all but the active register window
 
	rdpr %pstate, %l0
	and %l0, ~PSTATE_AM_BIT, %l0
	wrpr %l0, 0, %pstate
 
	set ofw_cif, %l0
 
	call ofw_init
	stx %o4, [%l0]
 
	call ofw_init_memmap
	nop
 
	wrpr %r0, 0, %pil
 
	call main_bsp
	nop
 
	/* Not reached. */
 
2:
	b 2b
	nop
 

Rev 1777	Rev 1784
1	#	1	#
2	# Copyright (C) 2005 Jakub Jermar	2	# Copyright (C) 2005 Jakub Jermar
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/boot/boot.h>	29	#include <arch/boot/boot.h>
-		30	#include <arch/register.h>
30		31
31	.register %g2, #scratch	32	.register %g2, #scratch
32	.register %g3, #scratch	33	.register %g3, #scratch
33	.register %g6, #scratch	34	.register %g6, #scratch
34	.register %g7, #scratch	35	.register %g7, #scratch
35		36
36	.section K_TEXT_START, "ax"	37	.section K_TEXT_START, "ax"
37		38
38	/*	39	/*
39	* Here is where the kernel is passed control.	40	* Here is where the kernel is passed control.
40	* The code must be position independent until	-
41	* the kernel relocates itself to its VMA.	-
42	*/	41	*/
43		42
44	.global kernel_image_start	43	.global kernel_image_start
45	kernel_image_start:	44	kernel_image_start:
46	flushw ! flush all but the active register window	45	flushw ! flush all but the active register window
47		46
-		47	rdpr %pstate, %l0
-		48	and %l0, ~PSTATE_AM_BIT, %l0
-		49	wrpr %l0, 0, %pstate
-		50
48	set ofw, %l0	51	set ofw_cif, %l0
49		52
50	call ofw_init	53	call ofw_init
51	stx %o4, [%l0]	54	stx %o4, [%l0]
52		55
53	call ofw_init_memmap	56	call ofw_init_memmap
54	nop	57	nop
55		58
56	wrpr %r0, 0, %pil	59	wrpr %r0, 0, %pil
57		60
58	call main_bsp	61	call main_bsp
59	nop	62	nop
60		63
61	/* Not reached. */	64	/* Not reached. */
62		65
63	2:	66	2:
64	b 2b	67	b 2b
65	nop	68	nop
66		69

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/sparc64/src/start.S – Rev 1777 → 1784