WebSVN – HelenOS – Diff – /trunk/kernel/arch/ia32/src/boot/boot.S


#
# Copyright (c) 2001-2004 Jakub Jermar
# Copyright (c) 2005-2006 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/boot/boot.h>
#include <arch/boot/memmap.h>
#include <arch/mm/page.h>
#include <arch/pm.h>
#include <arch/cpuid.h>
 
#define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE)
 
.section K_TEXT_START, "ax"
 
.code32
.align 4
.global multiboot_image_start
multiboot_header:
	.long MULTIBOOT_HEADER_MAGIC
	.long MULTIBOOT_HEADER_FLAGS
	.long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)  # checksum
	.long multiboot_header
	.long unmapped_ktext_start
	.long 0
	.long 0
	.long multiboot_image_start
 
multiboot_image_start:
	cld
	movl $START_STACK, %esp     # initialize stack pointer
	lgdt KA2PA(bootstrap_gdtr)  # initialize Global Descriptor Table register
	
	movw $gdtselector(KDATA_DES), %cx
	movw %cx, %es
	movw %cx, %fs
	movw %cx, %gs
	movw %cx, %ds               # kernel data + stack
	movw %cx, %ss
	
	jmpl $gdtselector(KTEXT_DES), $multiboot_meeting_point
	multiboot_meeting_point:
	
	movl %eax, grub_eax         # save parameters from GRUB
	movl %ebx, grub_ebx
	
	movl $(INTEL_CPUID_LEVEL), %eax
	cpuid
	cmp $0x0, %eax              # any function > 0?
	jbe pse_unsupported
	
	movl $(INTEL_CPUID_STANDARD), %eax
	cpuid
	bt $(INTEL_PSE), %edx
	jc pse_supported
	
	pse_unsupported:
		movl $pse_msg, %esi
		jmp error_halt
	
	pse_supported:
	
	bt $(INTEL_SEP), %edx
	jc sep_supported
	
		movl $sep_msg, %esi
		jmp error_halt
	
	sep_supported:
 
#include "vesa_prot.inc"
 
	# map kernel and turn paging on
	call map_kernel
	
	# call arch_pre_main(grub_eax, grub_ebx)
	pushl grub_ebx
	pushl grub_eax
	call arch_pre_main
	
	call main_bsp
	
	# not reached
	cli
	hlt0:
		hlt
		jmp hlt0
 
.global map_kernel
map_kernel:
	#
	# Here we setup mapping for both the unmapped and mapped sections of the kernel.
	# For simplicity, we map the entire 4G space.
	#
	movl %cr4, %ecx
	orl $(1 << 4), %ecx                 # turn PSE on
	andl $(~(1 << 5)), %ecx             # turn PAE off
	movl %ecx, %cr4
	
	movl $(page_directory + 0), %esi
	movl $(page_directory + 2048), %edi
	xorl %ecx, %ecx
	xorl %ebx, %ebx
	
	floop:
		movl $((1 << 7) | (1 << 1) | (1 << 0)), %eax
		orl %ebx, %eax
		movl %eax, (%esi, %ecx, 4)      # mapping 0x00000000 + %ecx * 4M => 0x00000000 + %ecx * 4M
		movl %eax, (%edi, %ecx, 4)      # mapping 0x80000000 + %ecx * 4M => 0x00000000 + %ecx * 4M
		addl $(4 * 1024 * 1024), %ebx
		
		incl %ecx
		cmpl $512, %ecx
		jl floop
	
	movl %esi, %cr3
	
	movl %cr0, %ebx
	orl $(1 << 31), %ebx                # turn paging on
	movl %ebx, %cr0
	ret
 
# Print string from %esi to EGA display (in red) and halt
error_halt:
	movl $0xb8000, %edi         # base of EGA text mode memory
	xorl %eax, %eax
	
	movw $0x3d4, %dx            # read bits 8 - 15 of the cursor address
	movb $0xe, %al
	outb %al, %dx
	
	movw $0x3d5, %dx
	inb %dx, %al
	shl $8, %ax
	
	movw $0x3d4, %dx            # read bits 0 - 7 of the cursor address
	movb $0xf, %al
	outb %al, %dx
	
	movw $0x3d5, %dx
	inb %dx, %al
	
	cmp $1920, %ax
	jbe cursor_ok
	
		movw $1920, %ax         # sanity check for the cursor on the last line
	
	cursor_ok:
	
	movw %ax, %bx
	shl $1, %eax
	addl %eax, %edi
	
	movw $0x0c00, %ax           # black background, light red foreground
	
	ploop:
		lodsb
		cmp $0, %al
		je ploop_end
		stosw
		inc %bx
		jmp ploop
	ploop_end:
	
	movw $0x3d4, %dx            # write bits 8 - 15 of the cursor address
	movb $0xe, %al
	outb %al, %dx
	
	movw $0x3d5, %dx
	movb %bh, %al
	outb %al, %dx
	
	movw $0x3d4, %dx            # write bits 0 - 7 of the cursor address
	movb $0xf, %al
	outb %al, %dx
	
	movw $0x3d5, %dx
	movb %bl, %al
	outb %al, %dx
	
	cli
	hlt1:
		hlt
		jmp hlt1
 
#include "vesa_real.inc"
 
.section K_DATA_START, "aw", @progbits
 
.align 4096
page_directory:
	.space 4096, 0
 
grub_eax:
	.long 0
 
grub_ebx:
	.long 0
 
pse_msg:
	.asciz "Page Size Extension not supported. System halted."
 
sep_msg:
	.asciz "SYSENTER/SYSEXIT not supported. System halted."
 

Rev 4127	Rev 4195
1	#	1	#
2	# Copyright (c) 2001-2004 Jakub Jermar	2	# Copyright (c) 2001-2004 Jakub Jermar
3	# Copyright (c) 2005-2006 Martin Decky	3	# Copyright (c) 2005-2006 Martin Decky
4	# All rights reserved.	4	# All rights reserved.
5	#	5	#
6	# Redistribution and use in source and binary forms, with or without	6	# Redistribution and use in source and binary forms, with or without
7	# modification, are permitted provided that the following conditions	7	# modification, are permitted provided that the following conditions
8	# are met:	8	# are met:
9	#	9	#
10	# - Redistributions of source code must retain the above copyright	10	# - Redistributions of source code must retain the above copyright
11	# notice, this list of conditions and the following disclaimer.	11	# notice, this list of conditions and the following disclaimer.
12	# - Redistributions in binary form must reproduce the above copyright	12	# - Redistributions in binary form must reproduce the above copyright
13	# notice, this list of conditions and the following disclaimer in the	13	# notice, this list of conditions and the following disclaimer in the
14	# documentation and/or other materials provided with the distribution.	14	# documentation and/or other materials provided with the distribution.
15	# - The name of the author may not be used to endorse or promote products	15	# - The name of the author may not be used to endorse or promote products
16	# derived from this software without specific prior written permission.	16	# derived from this software without specific prior written permission.
17	#	17	#
18	# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	18	# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19	# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	19	# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20	# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	20	# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21	# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	21	# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22	# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	22	# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23	# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	23	# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24	# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	24	# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	25	# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	26	# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27	# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	27	# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	#	28	#
29		29
30	#include <arch/boot/boot.h>	30	#include <arch/boot/boot.h>
31	#include <arch/boot/memmap.h>	31	#include <arch/boot/memmap.h>
32	#include <arch/mm/page.h>	32	#include <arch/mm/page.h>
33	#include <arch/pm.h>	33	#include <arch/pm.h>
-		34	#include <arch/cpuid.h>
34		35
35	#define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE)	36	#define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE)
36		37
37	.section K_TEXT_START, "ax"	38	.section K_TEXT_START, "ax"
38		39
39	.code32	40	.code32
40	.align 4	41	.align 4
41	.global multiboot_image_start	42	.global multiboot_image_start
42	multiboot_header:	43	multiboot_header:
43	.long MULTIBOOT_HEADER_MAGIC	44	.long MULTIBOOT_HEADER_MAGIC
44	.long MULTIBOOT_HEADER_FLAGS	45	.long MULTIBOOT_HEADER_FLAGS
45	.long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum	46	.long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum
46	.long multiboot_header	47	.long multiboot_header
47	.long unmapped_ktext_start	48	.long unmapped_ktext_start
48	.long 0	49	.long 0
49	.long 0	50	.long 0
50	.long multiboot_image_start	51	.long multiboot_image_start
51		52
52	multiboot_image_start:	53	multiboot_image_start:
53	cld	54	cld
54	movl $START_STACK, %esp # initialize stack pointer	55	movl $START_STACK, %esp # initialize stack pointer
55	lgdt KA2PA(bootstrap_gdtr) # initialize Global Descriptor Table register	56	lgdt KA2PA(bootstrap_gdtr) # initialize Global Descriptor Table register
56		57
57	movw $gdtselector(KDATA_DES), %cx	58	movw $gdtselector(KDATA_DES), %cx
58	movw %cx, %es	59	movw %cx, %es
59	movw %cx, %fs	60	movw %cx, %fs
60	movw %cx, %gs	61	movw %cx, %gs
61	movw %cx, %ds # kernel data + stack	62	movw %cx, %ds # kernel data + stack
62	movw %cx, %ss	63	movw %cx, %ss
63		64
64	jmpl $gdtselector(KTEXT_DES), $multiboot_meeting_point	65	jmpl $gdtselector(KTEXT_DES), $multiboot_meeting_point
65	multiboot_meeting_point:	66	multiboot_meeting_point:
66		67
67	movl %eax, grub_eax # save parameters from GRUB	68	movl %eax, grub_eax # save parameters from GRUB
68	movl %ebx, grub_ebx	69	movl %ebx, grub_ebx
69		70
70	xorl %eax, %eax	71	movl $(INTEL_CPUID_LEVEL), %eax
71	cpuid	72	cpuid
72	cmp $0x0, %eax # any function > 0?	73	cmp $0x0, %eax # any function > 0?
73	jbe pse_unsupported	74	jbe pse_unsupported
-		75
74	movl $0x1, %eax # basic function code 1	76	movl $(INTEL_CPUID_STANDARD), %eax
75	cpuid	77	cpuid
76	bt $3, %edx # test if PSE is supported	78	bt $(INTEL_PSE), %edx
77	jc pse_supported	79	jc pse_supported
78		80
79	pse_unsupported:	81	pse_unsupported:
80	movl $pse_msg, %esi	82	movl $pse_msg, %esi
81	jmp error_halt	83	jmp error_halt
82		84
83	pse_supported:	85	pse_supported:
-		86
-		87	bt $(INTEL_SEP), %edx
-		88	jc sep_supported
-		89
-		90	movl $sep_msg, %esi
-		91	jmp error_halt
-		92
-		93	sep_supported:
84		94
85	#include "vesa_prot.inc"	95	#include "vesa_prot.inc"
86		96
87	# map kernel and turn paging on	97	# map kernel and turn paging on
88	call map_kernel	98	call map_kernel
89		99
90	# call arch_pre_main(grub_eax, grub_ebx)	100	# call arch_pre_main(grub_eax, grub_ebx)
91	pushl grub_ebx	101	pushl grub_ebx
92	pushl grub_eax	102	pushl grub_eax
93	call arch_pre_main	103	call arch_pre_main
94		104
95	call main_bsp	105	call main_bsp
96		106
97	# not reached	107	# not reached
98	cli	108	cli
99	hlt0:	109	hlt0:
100	hlt	110	hlt
101	jmp hlt0	111	jmp hlt0
102		112
103	.global map_kernel	113	.global map_kernel
104	map_kernel:	114	map_kernel:
105	#	115	#
106	# Here we setup mapping for both the unmapped and mapped sections of the kernel.	116	# Here we setup mapping for both the unmapped and mapped sections of the kernel.
107	# For simplicity, we map the entire 4G space.	117	# For simplicity, we map the entire 4G space.
108	#	118	#
109	movl %cr4, %ecx	119	movl %cr4, %ecx
110	orl $(1 << 4), %ecx # turn PSE on	120	orl $(1 << 4), %ecx # turn PSE on
111	andl $(~(1 << 5)), %ecx # turn PAE off	121	andl $(~(1 << 5)), %ecx # turn PAE off
112	movl %ecx, %cr4	122	movl %ecx, %cr4
113		123
114	movl $(page_directory + 0), %esi	124	movl $(page_directory + 0), %esi
115	movl $(page_directory + 2048), %edi	125	movl $(page_directory + 2048), %edi
116	xorl %ecx, %ecx	126	xorl %ecx, %ecx
117	xorl %ebx, %ebx	127	xorl %ebx, %ebx
118		128
119	floop:	129	floop:
120	movl $((1 << 7) \| (1 << 1) \| (1 << 0)), %eax	130	movl $((1 << 7) \| (1 << 1) \| (1 << 0)), %eax
121	orl %ebx, %eax	131	orl %ebx, %eax
122	movl %eax, (%esi, %ecx, 4) # mapping 0x00000000 + %ecx * 4M => 0x00000000 + %ecx * 4M	132	movl %eax, (%esi, %ecx, 4) # mapping 0x00000000 + %ecx * 4M => 0x00000000 + %ecx * 4M
123	movl %eax, (%edi, %ecx, 4) # mapping 0x80000000 + %ecx * 4M => 0x00000000 + %ecx * 4M	133	movl %eax, (%edi, %ecx, 4) # mapping 0x80000000 + %ecx * 4M => 0x00000000 + %ecx * 4M
124	addl $(4 * 1024 * 1024), %ebx	134	addl $(4 * 1024 * 1024), %ebx
125		135
126	incl %ecx	136	incl %ecx
127	cmpl $512, %ecx	137	cmpl $512, %ecx
128	jl floop	138	jl floop
129		139
130	movl %esi, %cr3	140	movl %esi, %cr3
131		141
132	movl %cr0, %ebx	142	movl %cr0, %ebx
133	orl $(1 << 31), %ebx # turn paging on	143	orl $(1 << 31), %ebx # turn paging on
134	movl %ebx, %cr0	144	movl %ebx, %cr0
135	ret	145	ret
136		146
137	# Print string from %esi to EGA display (in red) and halt	147	# Print string from %esi to EGA display (in red) and halt
138	error_halt:	148	error_halt:
139	movl $0xb8000, %edi # base of EGA text mode memory	149	movl $0xb8000, %edi # base of EGA text mode memory
140	xorl %eax, %eax	150	xorl %eax, %eax
141		151
142	movw $0x3d4, %dx # read bits 8 - 15 of the cursor address	152	movw $0x3d4, %dx # read bits 8 - 15 of the cursor address
143	movb $0xe, %al	153	movb $0xe, %al
144	outb %al, %dx	154	outb %al, %dx
145		155
146	movw $0x3d5, %dx	156	movw $0x3d5, %dx
147	inb %dx, %al	157	inb %dx, %al
148	shl $8, %ax	158	shl $8, %ax
149		159
150	movw $0x3d4, %dx # read bits 0 - 7 of the cursor address	160	movw $0x3d4, %dx # read bits 0 - 7 of the cursor address
151	movb $0xf, %al	161	movb $0xf, %al
152	outb %al, %dx	162	outb %al, %dx
153		163
154	movw $0x3d5, %dx	164	movw $0x3d5, %dx
155	inb %dx, %al	165	inb %dx, %al
156		166
157	cmp $1920, %ax	167	cmp $1920, %ax
158	jbe cursor_ok	168	jbe cursor_ok
159		169
160	movw $1920, %ax # sanity check for the cursor on the last line	170	movw $1920, %ax # sanity check for the cursor on the last line
161		171
162	cursor_ok:	172	cursor_ok:
163		173
164	movw %ax, %bx	174	movw %ax, %bx
165	shl $1, %eax	175	shl $1, %eax
166	addl %eax, %edi	176	addl %eax, %edi
167		177
168	movw $0x0c00, %ax # black background, light red foreground	178	movw $0x0c00, %ax # black background, light red foreground
169		179
170	ploop:	180	ploop:
171	lodsb	181	lodsb
172	cmp $0, %al	182	cmp $0, %al
173	je ploop_end	183	je ploop_end
174	stosw	184	stosw
175	inc %bx	185	inc %bx
176	jmp ploop	186	jmp ploop
177	ploop_end:	187	ploop_end:
178		188
179	movw $0x3d4, %dx # write bits 8 - 15 of the cursor address	189	movw $0x3d4, %dx # write bits 8 - 15 of the cursor address
180	movb $0xe, %al	190	movb $0xe, %al
181	outb %al, %dx	191	outb %al, %dx
182		192
183	movw $0x3d5, %dx	193	movw $0x3d5, %dx
184	movb %bh, %al	194	movb %bh, %al
185	outb %al, %dx	195	outb %al, %dx
186		196
187	movw $0x3d4, %dx # write bits 0 - 7 of the cursor address	197	movw $0x3d4, %dx # write bits 0 - 7 of the cursor address
188	movb $0xf, %al	198	movb $0xf, %al
189	outb %al, %dx	199	outb %al, %dx
190		200
191	movw $0x3d5, %dx	201	movw $0x3d5, %dx
192	movb %bl, %al	202	movb %bl, %al
193	outb %al, %dx	203	outb %al, %dx
194		204
195	cli	205	cli
196	hlt1:	206	hlt1:
197	hlt	207	hlt
198	jmp hlt1	208	jmp hlt1
199		209
200	#include "vesa_real.inc"	210	#include "vesa_real.inc"
201		211
202	.section K_DATA_START, "aw", @progbits	212	.section K_DATA_START, "aw", @progbits
203		213
204	.align 4096	214	.align 4096
205	page_directory:	215	page_directory:
206	.space 4096, 0	216	.space 4096, 0
207		217
208	grub_eax:	218	grub_eax:
209	.long 0	219	.long 0
210		220
211	grub_ebx:	221	grub_ebx:
212	.long 0	222	.long 0
213		223
214	pse_msg:	224	pse_msg:
215	.asciz "Page Size Extension not supported. System halted."	225	.asciz "Page Size Extension not supported. System halted."
-		226
-		227	sep_msg:
-		228	.asciz "SYSENTER/SYSEXIT not supported. System halted."
216		229

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/ia32/src/boot/boot.S @ 2071 – Rev 4127 → 4195