WebSVN – HelenOS – Diff – /trunk/kernel/arch/ia32xen/src/boot/boot.S


#
# Copyright (c) 2006 Martin Decky
# 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/mm/page.h>
#include <arch/hypercall.h>
 
#define ELFNOTE(name, type, desctype, descval) \
	.section .note.name; \
	.align 4; \
	.long 2f - 1f; \
	.long 4f - 3f; \
	.long type; \
	1:.asciz #name; \
	2:.align 4; \
	3:desctype descval; \
	4:.align 4
 
ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS,			.asciz,	"HelenOS")
ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION,		.asciz,	RELEASE)
ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION,		.asciz,	"xen-3.0")
ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE,			.long,	PA2KA(BOOT_OFFSET))
ELFNOTE(Xen, XEN_ELFNOTE_PADDR_OFFSET,		.long,	0)
ELFNOTE(Xen, XEN_ELFNOTE_ENTRY,				.long,	kernel_image_start)
ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE,	.long,	hypercall_page)
ELFNOTE(Xen, XEN_ELFNOTE_FEATURES,			.asciz,	"auto_translated_physmap|supervisor_mode_kernel")
ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE,			.asciz,	"no")
ELFNOTE(Xen, XEN_ELFNOTE_LOADER,			.asciz,	"generic")
 
.text
 
.code32
.align 4
.global kernel_image_start
	
kernel_image_start:
	# copy start_info (esi initialized by Xen)
	
	movl $start_info, %edi
	movl $START_INFO_SIZE >> 2, %ecx
	cld
	rep movsb
	
	# switch to temporal kernel stack
	
	movl $kernel_stack, %esp
	
	call arch_pre_main
	call main_bsp								# never returns
 
	cli
	hlt
 
kernel_stack_bottom:
	.space TEMP_STACK_SIZE
kernel_stack:
 
.section K_TEXT_START, "aw", @progbits
.global hypercall_page
.org 0
hypercall_page:
	.space PAGE_SIZE
 
.global shared_info
.org 0x1000
shared_info:
	.space PAGE_SIZE
 
.global console_page
.org 0x2000
console_page:
	.space PAGE_SIZE
 
# Xen 3.0.3 ELF loader is somehow buggy
# thus this workaround
.global dummy_fill
dummy_fill:
	.space (1024 * 1024)
 

Rev 2071	Rev 2089
1	#	1	#
2	# Copyright (c) 2006 Martin Decky	2	# Copyright (c) 2006 Martin Decky
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>	-
30	#include <arch/mm/page.h>	29	#include <arch/mm/page.h>
31	#include <arch/pm.h>	30	#include <arch/hypercall.h>
32		31
33	#define ELFNOTE(name, type, desctype, descval) \	32	#define ELFNOTE(name, type, desctype, descval) \
34	.section .note.name; \	33	.section .note.name; \
35	.align 4; \	34	.align 4; \
36	.long 2f - 1f; \	35	.long 2f - 1f; \
37	.long 4f - 3f; \	36	.long 4f - 3f; \
38	.long type; \	37	.long type; \
39	1:.asciz #name; \	38	1:.asciz #name; \
40	2:.align 4; \	39	2:.align 4; \
41	3:desctype descval; \	40	3:desctype descval; \
42	4:.align 4	41	4:.align 4
43		42
44	ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS, .asciz, "HelenOS")	43	ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS, .asciz, "HelenOS")
45	ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION, .asciz, RELEASE)	44	ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION, .asciz, RELEASE)
46	ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION, .asciz, "xen-3.0")	45	ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION, .asciz, "xen-3.0")
47	ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE, .long, PA2KA(BOOT_OFFSET))	46	ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE, .long, PA2KA(BOOT_OFFSET))
48	ELFNOTE(Xen, XEN_ELFNOTE_PADDR_OFFSET, .long, 0)	47	ELFNOTE(Xen, XEN_ELFNOTE_PADDR_OFFSET, .long, 0)
49	ELFNOTE(Xen, XEN_ELFNOTE_ENTRY, .long, kernel_image_start)	48	ELFNOTE(Xen, XEN_ELFNOTE_ENTRY, .long, kernel_image_start)
50	ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, .long, hypercall_page)	49	ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, .long, hypercall_page)
51	ELFNOTE(Xen, XEN_ELFNOTE_FEATURES, .asciz, "auto_translated_physmap\|supervisor_mode_kernel")	50	ELFNOTE(Xen, XEN_ELFNOTE_FEATURES, .asciz, "auto_translated_physmap\|supervisor_mode_kernel")
52	ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE, .asciz, "no")	51	ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE, .asciz, "no")
53	ELFNOTE(Xen, XEN_ELFNOTE_LOADER, .asciz, "generic")	52	ELFNOTE(Xen, XEN_ELFNOTE_LOADER, .asciz, "generic")
54		53
55	.text	54	.text
56		55
57	.code32	56	.code32
58	.align 4	57	.align 4
59	.global kernel_image_start	58	.global kernel_image_start
60		59
61	kernel_image_start:	60	kernel_image_start:
62	# copy start_info (esi initialized by Xen)	61	# copy start_info (esi initialized by Xen)
63		62
64	movl $start_info, %edi	63	movl $start_info, %edi
65	movl $START_INFO_SIZE >> 2, %ecx	64	movl $START_INFO_SIZE >> 2, %ecx
66	cld	65	cld
67	rep movsb	66	rep movsb
68		67
69	# switch to temporal kernel stack	68	# switch to temporal kernel stack
70		69
71	movl $kernel_stack, %esp	70	movl $kernel_stack, %esp
72		71
73	call arch_pre_main	72	call arch_pre_main
74	call main_bsp # never returns	73	call main_bsp # never returns
75		74
76	cli	75	cli
77	hlt	76	hlt
78		77
79	kernel_stack_bottom:	78	kernel_stack_bottom:
80	.space TEMP_STACK_SIZE	79	.space TEMP_STACK_SIZE
81	kernel_stack:	80	kernel_stack:
82		81
83	.section K_TEXT_START, "aw", @progbits	82	.section K_TEXT_START, "aw", @progbits
84	.global hypercall_page	83	.global hypercall_page
85	.org 0	84	.org 0
86	hypercall_page:	85	hypercall_page:
87	.space PAGE_SIZE	86	.space PAGE_SIZE
88		87
89	.global shared_info	88	.global shared_info
90	.org 0x1000	89	.org 0x1000
91	shared_info:	90	shared_info:
92	.space PAGE_SIZE	91	.space PAGE_SIZE
93		92
94	.global console_page	93	.global console_page
95	.org 0x2000	94	.org 0x2000
96	console_page:	95	console_page:
97	.space PAGE_SIZE	96	.space PAGE_SIZE
98		97
99	# Xen 3.0.3 ELF loader is somehow buggy	98	# Xen 3.0.3 ELF loader is somehow buggy
100	# thus this workaround	99	# thus this workaround
101	.global dummy_fill	100	.global dummy_fill
102	dummy_fill:	101	dummy_fill:
103	.space (1024 * 1024)	102	.space (1024 * 1024)
104		103

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/ia32xen/src/boot/boot.S – Rev 2071 → 2089