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Last change on this file since 3014e2b2 was 5d8d71e, checked in by Jiri Svoboda <jirik.svoboda@…>, 17 years ago
Move multiboot parsing to genarch/*/multiboot and adapt it for use with both ia32 and amd64. Multiboot info parsing now supported on amd64, too.
Property mode set to `100644`
File size: 12.2 KB

Rev	Line
[53634f9]	1	#
[df4ed85]	2	# Copyright (c) 2005 Ondrej Palkovsky
	3	# Copyright (c) 2006 Martin Decky
[19077a5]	4	# Copyright (c) 2008 Jakub Jermar
[1141c1a]	5	# All rights reserved.
	6	#
	7	# Redistribution and use in source and binary forms, with or without
	8	# modification, are permitted provided that the following conditions
	9	# are met:
	10	#
	11	# - Redistributions of source code must retain the above copyright
	12	# notice, this list of conditions and the following disclaimer.
	13	# - Redistributions in binary form must reproduce the above copyright
	14	# notice, this list of conditions and the following disclaimer in the
	15	# documentation and/or other materials provided with the distribution.
	16	# - The name of the author may not be used to endorse or promote products
	17	# derived from this software without specific prior written permission.
	18	#
	19	# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	20	# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	21	# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	22	# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	23	# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	24	# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	25	# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	26	# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	27	# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	28	# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	29	#
	30
[46d26ee]	31	#include <arch/boot/boot.h>
	32	#include <arch/boot/memmap.h>
[8fc0d455]	33	#include <arch/mm/page.h>
[6f878b7]	34	#include <arch/mm/ptl.h>
[8fc0d455]	35	#include <arch/pm.h>
[89344d85]	36	#include <arch/cpu.h>
[c4b3e3e]	37	#include <arch/cpuid.h>
[1141c1a]	38
[8725fb4]	39	#define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE)
[c4b3e3e]	40
[874e312a]	41	.section K_TEXT_START, "ax"
[46d26ee]	42
[8ccec3c1]	43	.code32
	44	.align 4
[46d26ee]	45	.global multiboot_image_start
[8ccec3c1]	46	multiboot_header:
	47	.long MULTIBOOT_HEADER_MAGIC
	48	.long MULTIBOOT_HEADER_FLAGS
	49	.long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum
[8725fb4]	50	.long multiboot_header
	51	.long unmapped_ktext_start
[8ccec3c1]	52	.long 0
	53	.long 0
[8725fb4]	54	.long multiboot_image_start
[8ccec3c1]	55
	56	multiboot_image_start:
[e13daa5d]	57	cld
[46d26ee]	58	movl $START_STACK, %esp # initialize stack pointer
[19077a5]	59	lgdtl bootstrap_gdtr # initialize Global Descriptor Table register
[1a67595]	60
	61	movw $gdtselector(KDATA_DES), %cx
	62	movw %cx, %es
	63	movw %cx, %ds # kernel data + stack
	64	movw %cx, %ss
[65640fef]	65	# Simics seems to remove hidden part of GS on entering user mode
	66	# when _visible_ part of GS does not point to user-mode segment
	67	movw $gdtselector(UDATA_DES), %cx
	68	movw %cx, %fs
	69	movw %cx, %gs
[1a67595]	70
[46d26ee]	71	jmpl $gdtselector(KTEXT32_DES), $multiboot_meeting_point
[1a67595]	72	multiboot_meeting_point:
	73
[19077a5]	74	movl %eax, grub_eax # save parameters from GRUB
[46d26ee]	75	movl %ebx, grub_ebx
	76
[ac88c93]	77	# Protected 32-bit. We want to reuse the code-seg descriptor,
	78	# the Default operand size must not be 1 when entering long mode
	79
[4fb6bf36]	80	movl $(INTEL_CPUID_EXTENDED), %eax
[ac88c93]	81	cpuid
[4fb6bf36]	82	cmp $(INTEL_CPUID_EXTENDED), %eax
	83	ja extended_cpuid_supported
	84
	85	movl $extended_cpuid_msg, %esi
	86	jmp error_halt
	87
	88	extended_cpuid_supported:
	89
	90	movl $(AMD_CPUID_EXTENDED), %eax
[ac88c93]	91	cpuid
[4fb6bf36]	92	bt $(AMD_EXT_LONG_MODE), %edx
[ac88c93]	93	jc long_mode_supported
[4fb6bf36]	94
[ac88c93]	95	movl $long_mode_msg, %esi
	96	jmp error_halt
[4fb6bf36]	97
[ac88c93]	98	long_mode_supported:
	99
[4fb6bf36]	100	bt $(AMD_EXT_NOEXECUTE), %edx
	101	jc noexecute_supported
	102
	103	movl $noexecute_msg, %esi
	104	jmp error_halt
	105
	106	noexecute_supported:
	107
	108	movl $(INTEL_CPUID_STANDARD), %eax
	109	cpuid
	110	bt $(INTEL_FXSAVE), %edx
	111	jc fx_supported
	112
	113	movl $fx_msg, %esi
	114	jmp error_halt
	115
	116	fx_supported:
	117
	118	bt $(INTEL_SSE2), %edx
	119	jc sse2_supported
	120
	121	movl $sse2_msg, %esi
	122	jmp error_halt
	123
	124	sse2_supported:
	125
[de07bcf]	126	#ifdef CONFIG_FB
[ac88c93]	127	mov $vesa_init, %esi
[8778271]	128	mov $VESA_INIT_SEGMENT << 4, %edi
	129	mov $e_vesa_init - vesa_init, %ecx
	130	rep movsb
[de07bcf]	131
[8778271]	132	mov $VESA_INIT_SEGMENT << 4, %edi
	133	jmpl *%edi
	134
	135	vesa_meeting_point:
	136
	137	mov %esi, KA2PA(vesa_ph_addr)
	138	mov %di, KA2PA(vesa_height)
	139	shr $16, %edi
	140	mov %di, KA2PA(vesa_width)
	141	mov %bx, KA2PA(vesa_scanline)
	142	shr $16, %ebx
	143	mov %bx, KA2PA(vesa_bpp)
[de07bcf]	144	#endif
[42edee68]	145
[4fb6bf36]	146	# Enable 64-bit page translation entries - CR4.PAE = 1.
[6f878b7]	147	# Paging is not enabled until after long mode is enabled
[8725fb4]	148
[6f878b7]	149	movl %cr4, %eax
	150	btsl $5, %eax
	151	movl %eax, %cr4
	152
	153	# Set up paging tables
[8725fb4]	154
[6f878b7]	155	leal ptl_0, %eax
	156	movl %eax, %cr3
[c4b3e3e]	157
[6f878b7]	158	# Enable long mode
[8725fb4]	159
[19077a5]	160	movl $EFER_MSR_NUM, %ecx # EFER MSR number
[8725fb4]	161	rdmsr # Read EFER
[19077a5]	162	btsl $AMD_LME_FLAG, %eax # Set LME = 1
[8725fb4]	163	wrmsr # Write EFER
[c245372b]	164
[4fb6bf36]	165	# Enable paging to activate long mode (set CR0.PG = 1)
[8725fb4]	166
[6f878b7]	167	movl %cr0, %eax
	168	btsl $31, %eax
	169	movl %eax, %cr0
[c245372b]	170
[6f878b7]	171	# At this point we are in compatibility mode
[8725fb4]	172
[b9e97fb]	173	jmpl $gdtselector(KTEXT_DES), $start64
[c245372b]	174
[6f878b7]	175	.code64
	176	start64:
[c4b3e3e]	177	movq $(PA2KA(START_STACK)), %rsp
[5d8d71e]	178
	179	# arch_pre_main(grub_eax, grub_ebx)
	180	xorq %rdi, %rdi
	181	movl grub_eax, %edi
	182	xorq %rsi, %rsi
	183	movl grub_ebx, %esi
	184	call arch_pre_main
	185
	186	call main_bsp
	187
	188	# Not reached.
[8725fb4]	189
	190	cli
	191	hlt
[de07bcf]	192
	193	#ifdef CONFIG_FB
	194	.code32
	195	vesa_init:
[8778271]	196	jmp $gdtselector(VESA_INIT_DES), $vesa_init_real - vesa_init
	197
[de07bcf]	198	.code16
[8778271]	199	vesa_init_real:
	200
	201	mov %cr0, %eax
	202	and $~1, %eax
	203	mov %eax, %cr0
	204
	205	jmp $VESA_INIT_SEGMENT, $vesa_init_real2 - vesa_init
	206
	207	vesa_init_real2:
	208
	209	mov $VESA_INIT_SEGMENT, %bx
	210
	211	mov %bx, %es
	212	mov %bx, %fs
	213	mov %bx, %gs
	214	mov %bx, %ds
	215	mov %bx, %ss
	216
	217	movl $0x0000fffc, %esp
[9652bd59]	218	movl $0x0000fffc, %ebp
[de07bcf]	219
	220	#define VESA_INFO_SIZE 1024
	221
[4f42d52]	222	#define VESA_MODE_ATTRIBUTES_OFFSET 0
[8778271]	223	#define VESA_MODE_LIST_PTR_OFFSET 14
[4f42d52]	224	#define VESA_MODE_SCANLINE_OFFSET 16
[de07bcf]	225	#define VESA_MODE_WIDTH_OFFSET 18
	226	#define VESA_MODE_HEIGHT_OFFSET 20
	227	#define VESA_MODE_BPP_OFFSET 25
	228	#define VESA_MODE_PHADDR_OFFSET 40
	229
[8778271]	230	#define VESA_END_OF_MODES 0xffff
[de07bcf]	231
[8778271]	232	#define VESA_OK 0x4f
[de07bcf]	233
[8778271]	234	#define VESA_GET_INFO 0x4f00
[de07bcf]	235	#define VESA_GET_MODE_INFO 0x4f01
	236	#define VESA_SET_MODE 0x4f02
[4f42d52]	237	#define VESA_SET_PALETTE 0x4f09
[de07bcf]	238
	239	#define CONFIG_VESA_BPP_a 255
	240
[8778271]	241	#if CONFIG_VESA_BPP == 24
[4f42d52]	242	#define CONFIG_VESA_BPP_VARIANT 32
[de07bcf]	243	#endif
[4f42d52]	244
[8778271]	245	mov $VESA_GET_INFO, %ax
	246	mov $e_vesa_init - vesa_init, %di
	247	push %di
	248	int $0x10
	249
	250	pop %di
	251	cmp $VESA_OK, %al
	252	jnz 0f
	253
	254	mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si
	255	mov %si, %gs
	256	mov VESA_MODE_LIST_PTR_OFFSET(%di), %si
	257
	258	add $VESA_INFO_SIZE, %di
[4f42d52]	259
[de07bcf]	260	1:# Try next mode
[8778271]	261	mov %gs:(%si), %cx
	262	cmp $VESA_END_OF_MODES, %cx
	263	jz 0f
	264
	265	inc %si
	266	inc %si
	267	push %cx
	268	push %di
	269	push %si
	270	mov $VESA_GET_MODE_INFO, %ax
	271	int $0x10
	272
	273	pop %si
	274	pop %di
	275	pop %cx
	276	cmp $VESA_OK, %al
	277	jnz 0f
	278
	279	mov $CONFIG_VESA_WIDTH, %ax
	280	cmp VESA_MODE_WIDTH_OFFSET(%di), %ax
	281	jnz 1b
	282
	283	mov $CONFIG_VESA_HEIGHT, %ax
	284	cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax
	285	jnz 1b
	286
	287	mov $CONFIG_VESA_BPP, %al
	288	cmp VESA_MODE_BPP_OFFSET(%di), %al
[4f42d52]	289
	290	#ifdef CONFIG_VESA_BPP_VARIANT
[8778271]	291	jz 2f
	292
[4f42d52]	293	mov $CONFIG_VESA_BPP_VARIANT, %al
[8778271]	294	cmp VESA_MODE_BPP_OFFSET(%di), %al
[4f42d52]	295	#endif
[8778271]	296	jnz 1b
	297
[de07bcf]	298	2:
	299
[8778271]	300	mov %cx, %bx
	301	or $0xc000, %bx
	302	push %di
	303	mov $VESA_SET_MODE, %ax
	304	int $0x10
[de07bcf]	305
[8778271]	306	pop %di
	307	cmp $VESA_OK, %al
	308	jnz 0f
[4f42d52]	309
	310	#if CONFIG_VESA_BPP == 8
	311
	312	# Set 3:2:3 VGA palette
	313
	314	mov VESA_MODE_ATTRIBUTES_OFFSET(%di), %ax
	315	push %di
	316	mov $vga323 - vesa_init, %di
	317	mov $0x100, %ecx
	318
[19077a5]	319	bt $5, %ax # Test if VGA compatible registers are present
[4f42d52]	320	jnc vga_compat
	321
	322	# Try VESA routine to set palette
	323
	324	mov $VESA_SET_PALETTE, %ax
	325	xor %bl, %bl
	326	xor %dx, %dx
	327	int $0x10
	328
[b1747a5]	329	cmp $0x00, %ah
	330	je vga_not_compat
[4f42d52]	331
	332	vga_compat:
	333
	334	# Try VGA registers to set palette
	335
[19077a5]	336	movw $0x3c6, %dx # Set palette mask
[4f42d52]	337	movb $0xff, %al
	338	outb %al, %dx
	339
[19077a5]	340	movw $0x3c8, %dx # First index to set
[4f42d52]	341	xor %al, %al
	342	outb %al, %dx
	343
[19077a5]	344	movw $0x3c9, %dx # Data port
[4f42d52]	345	vga_loop:
	346	movb %es:2(%di), %al
	347	outb %al, %dx
	348
	349	movb %es:1(%di), %al
	350	outb %al, %dx
	351
	352	movb %es:(%di), %al
	353	outb %al, %dx
	354
	355	addw $4, %di
	356	loop vga_loop
	357
	358	vga_not_compat:
	359
	360	pop %di
	361
	362	#endif
[8778271]	363
	364	mov VESA_MODE_PHADDR_OFFSET(%di), %esi
	365	mov VESA_MODE_WIDTH_OFFSET(%di), %ax
	366	shl $16, %eax
	367	mov VESA_MODE_HEIGHT_OFFSET(%di), %ax
	368	mov VESA_MODE_BPP_OFFSET(%di), %bl
	369	xor %bh, %bh
	370	shl $16, %ebx
	371	mov VESA_MODE_SCANLINE_OFFSET(%di), %bx
	372	mov %eax, %edi
	373
	374	8:
	375
	376	mov %cr0, %eax
	377	or $1, %eax
	378	mov %eax, %cr0
	379
	380	jmp 9f
[de07bcf]	381	9:
[8778271]	382
	383	ljmpl $gdtselector(KTEXT32_DES), $(vesa_init_protect - vesa_init + VESA_INIT_SEGMENT << 4)
	384
	385	0:# No prefered mode found
	386	mov $0x111, %cx
	387	push %di
	388	push %cx
	389	mov $VESA_GET_MODE_INFO, %ax
	390	int $0x10
	391
	392	pop %cx
	393	pop %di
	394	cmp $VESA_OK, %al
	395	jnz 1f
	396	jz 2b # Force relative jump
	397
	398	1:
	399	mov $0x0003, %ax
	400	int $0x10
[19077a5]	401	mov $0xffffffff, %edi # EGA text mode used, because of problems with VESA
[8778271]	402	xor %ax, %ax
	403	jz 8b # Force relative jump
[4f42d52]	404
	405	vga323:
	406	#include "vga323.pal"
[8778271]	407
[de07bcf]	408	.code32
[8778271]	409	vesa_init_protect:
	410	movw $gdtselector(KDATA_DES), %cx
	411	movw %cx, %es
[19077a5]	412	movw %cx, %ds # kernel data + stack
[8778271]	413	movw %cx, %ss
	414	# Simics seems to remove hidden part of GS on entering user mode
	415	# when _visible_ part of GS does not point to user-mode segment
	416	movw $gdtselector(UDATA_DES), %cx
	417	movw %cx, %fs
	418	movw %cx, %gs
	419
[19077a5]	420	movl $START_STACK, %esp # initialize stack pointer
[7cb567cd]	421
[8778271]	422	jmpl $gdtselector(KTEXT32_DES), $vesa_meeting_point
	423
[de07bcf]	424	.align 4
	425	e_vesa_init:
[ac88c93]	426	#endif
	427
	428	# Print string from %esi to EGA display (in red) and halt
	429	error_halt:
[19077a5]	430	movl $0xb8000, %edi # base of EGA text mode memory
[ac88c93]	431	xorl %eax, %eax
	432
[19077a5]	433	movw $0x3d4, %dx # read bits 8 - 15 of the cursor address
[ac88c93]	434	movb $0xe, %al
	435	outb %al, %dx
	436
	437	movw $0x3d5, %dx
	438	inb %dx, %al
	439	shl $8, %ax
	440
[19077a5]	441	movw $0x3d4, %dx # read bits 0 - 7 of the cursor address
[ac88c93]	442	movb $0xf, %al
	443	outb %al, %dx
	444
	445	movw $0x3d5, %dx
	446	inb %dx, %al
	447
	448	cmp $1920, %ax
	449	jbe cursor_ok
[19077a5]	450	movw $1920, %ax # sanity check for the cursor on the last line
[ac88c93]	451	cursor_ok:
	452
	453	movw %ax, %bx
	454	shl $1, %eax
	455	addl %eax, %edi
	456
[19077a5]	457	movw $0x0c00, %ax # black background, light red foreground
[ac88c93]	458
	459	ploop:
	460	lodsb
	461	cmp $0, %al
	462	je ploop_end
	463	stosw
	464	inc %bx
	465	jmp ploop
	466	ploop_end:
	467
[19077a5]	468	movw $0x3d4, %dx # write bits 8 - 15 of the cursor address
[ac88c93]	469	movb $0xe, %al
	470	outb %al, %dx
	471
	472	movw $0x3d5, %dx
	473	movb %bh, %al
	474	outb %al, %dx
	475
[19077a5]	476	movw $0x3d4, %dx # write bits 0 - 7 of the cursor address
[ac88c93]	477	movb $0xf, %al
	478	outb %al, %dx
	479
	480	movw $0x3d5, %dx
	481	movb %bl, %al
	482	outb %al, %dx
	483
	484	cli
	485	hlt
[b9e97fb]	486
[19077a5]	487
	488	.section K_INI_PTLS, "aw", @progbits
	489
	490	#
	491	# Macro for generating initial page table contents.
	492	# @param cnt Number of entries to generat. Must be multiple of 8.
	493	# @param g Number of GB that will be added to the mapping.
	494	#
	495	.macro ptl2gen cnt g
	496	.if \cnt
	497	ptl2gen "\cnt - 8" \g
	498	.quad ((\cnt - 8) * 0x200000) + (\g * 1024 * 1024 * 1024) \| (PTL_WRITABLE \| PTL_PRESENT \| PTL_2MB_PAGE)
	499	.quad ((\cnt - 7) * 0x200000) + (\g * 1024 * 1024 * 1024) \| (PTL_WRITABLE \| PTL_PRESENT \| PTL_2MB_PAGE)
	500	.quad ((\cnt - 6) * 0x200000) + (\g * 1024 * 1024 * 1024) \| (PTL_WRITABLE \| PTL_PRESENT \| PTL_2MB_PAGE)
	501	.quad ((\cnt - 5) * 0x200000) + (\g * 1024 * 1024 * 1024) \| (PTL_WRITABLE \| PTL_PRESENT \| PTL_2MB_PAGE)
	502	.quad ((\cnt - 4) * 0x200000) + (\g * 1024 * 1024 * 1024) \| (PTL_WRITABLE \| PTL_PRESENT \| PTL_2MB_PAGE)
	503	.quad ((\cnt - 3) * 0x200000) + (\g * 1024 * 1024 * 1024) \| (PTL_WRITABLE \| PTL_PRESENT \| PTL_2MB_PAGE)
	504	.quad ((\cnt - 2) * 0x200000) + (\g * 1024 * 1024 * 1024) \| (PTL_WRITABLE \| PTL_PRESENT \| PTL_2MB_PAGE)
	505	.quad ((\cnt - 1) * 0x200000) + (\g * 1024 * 1024 * 1024) \| (PTL_WRITABLE \| PTL_PRESENT \| PTL_2MB_PAGE)
	506	.endif
	507	.endm
	508
	509	# Page table for pages in the first gigabyte.
[1141c1a]	510	.align 4096
[19077a5]	511	.global ptl_2_0g
	512	ptl_2_0g:
	513	ptl2gen 512 0
	514
	515	# Page table for pages in the second gigabyte.
	516	.align 4096
	517	.global ptl_2_1g
	518	ptl_2_1g:
	519	ptl2gen 512 1
	520
	521	# Page table for pages in the third gigabyte.
	522	.align 4096
	523	.global ptl_2_2g
	524	ptl_2_2g:
	525	ptl2gen 512 2
	526
	527	# Page table for pages in the fourth gigabyte.
	528	.align 4096
	529	.global ptl_2_3g
	530	ptl_2_3g:
	531	ptl2gen 512 3
[b9e97fb]	532
[6f878b7]	533	.align 4096
	534	.global ptl_1
	535	ptl_1:
[19077a5]	536	# Identity mapping for [0; 4G)
	537	.quad ptl_2_0g + (PTL_WRITABLE \| PTL_PRESENT)
	538	.quad ptl_2_1g + (PTL_WRITABLE \| PTL_PRESENT)
	539	.quad ptl_2_2g + (PTL_WRITABLE \| PTL_PRESENT)
	540	.quad ptl_2_3g + (PTL_WRITABLE \| PTL_PRESENT)
	541	.fill 506, 8, 0
	542	# Mapping of [0; 1G) at -2G
	543	.quad ptl_2_0g + (PTL_WRITABLE \| PTL_PRESENT)
	544	.fill 1, 8, 0
[6f878b7]	545
	546	.align 4096
	547	.global ptl_0
	548	ptl_0:
	549	.quad ptl_1 + (PTL_WRITABLE \| PTL_PRESENT)
[93165be]	550	.fill 255,8,0
	551	.quad ptl_1 + (PTL_WRITABLE \| PTL_PRESENT)
	552	.fill 254,8,0
[6f878b7]	553	.quad ptl_1 + (PTL_WRITABLE \| PTL_PRESENT)
	554
[19077a5]	555	.section K_DATA_START, "aw", @progbits
	556
[46d26ee]	557	.global bootstrap_gdtr
	558	bootstrap_gdtr:
[1a67595]	559	.word gdtselector(GDT_ITEMS)
	560	.long KA2PA(gdt)
[46d26ee]	561
	562	grub_eax:
	563	.long 0
	564
	565	grub_ebx:
	566	.long 0
[ac88c93]	567
[4fb6bf36]	568	extended_cpuid_msg:
	569	.asciz "Extended CPUID not supported. System halted."
[ac88c93]	570	long_mode_msg:
[4f42d52]	571	.asciz "64 bit long mode not supported. System halted."
[4fb6bf36]	572	noexecute_msg:
	573	.asciz "No-execute pages not supported. System halted."
	574	fx_msg:
	575	.asciz "FXSAVE/FXRESTORE instructions not supported. System halted."
	576	sse2_msg:
	577	.asciz "SSE2 instructions not supported. System halted."

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