feat: multiboot2 géré à partir d'une routine asm

This commit is contained in:
Nicolas Hordé 2018-09-27 17:12:12 +02:00
parent 48778a7ef6
commit 31b139ab01
7 changed files with 492 additions and 20 deletions

385
include/multiboot2.h Normal file
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@ -0,0 +1,385 @@
#include "types.h"
/* How many bytes from the start of the file we search for the header. */
#define MULTIBOOT_SEARCH 32768
#define MULTIBOOT_HEADER_ALIGN 8
/* The magic field should contain this. */
#define MULTIBOOT2_HEADER_MAGIC 0xe85250d6
/* This should be in %eax. */
#define MULTIBOOT2_BOOTLOADER_MAGIC 0x36d76289
/* Alignment of multiboot modules. */
#define MULTIBOOT_MOD_ALIGN 0x00001000
/* Alignment of the multiboot info structure. */
#define MULTIBOOT_INFO_ALIGN 0x00000008
/* Flags set in the 'flags' member of the multiboot header. */
#define MULTIBOOT_TAG_ALIGN 8
#define MULTIBOOT_TAG_TYPE_END 0
#define MULTIBOOT_TAG_TYPE_CMDLINE 1
#define MULTIBOOT_TAG_TYPE_BOOT_LOADER_NAME 2
#define MULTIBOOT_TAG_TYPE_MODULE 3
#define MULTIBOOT_TAG_TYPE_BASIC_MEMINFO 4
#define MULTIBOOT_TAG_TYPE_BOOTDEV 5
#define MULTIBOOT_TAG_TYPE_MMAP 6
#define MULTIBOOT_TAG_TYPE_VBE 7
#define MULTIBOOT_TAG_TYPE_FRAMEBUFFER 8
#define MULTIBOOT_TAG_TYPE_ELF_SECTIONS 9
#define MULTIBOOT_TAG_TYPE_APM 10
#define MULTIBOOT_TAG_TYPE_EFI32 11
#define MULTIBOOT_TAG_TYPE_EFI64 12
#define MULTIBOOT_TAG_TYPE_SMBIOS 13
#define MULTIBOOT_TAG_TYPE_ACPI_OLD 14
#define MULTIBOOT_TAG_TYPE_ACPI_NEW 15
#define MULTIBOOT_TAG_TYPE_NETWORK 16
#define MULTIBOOT_TAG_TYPE_EFI_MMAP 17
#define MULTIBOOT_TAG_TYPE_EFI_BS 18
#define MULTIBOOT_TAG_TYPE_EFI32_IH 19
#define MULTIBOOT_TAG_TYPE_EFI64_IH 20
#define MULTIBOOT_TAG_TYPE_LOAD_BASE_ADDR 21
#define MULTIBOOT_HEADER_TAG_END 0
#define MULTIBOOT_HEADER_TAG_INFORMATION_REQUEST 1
#define MULTIBOOT_HEADER_TAG_ADDRESS 2
#define MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS 3
#define MULTIBOOT_HEADER_TAG_CONSOLE_FLAGS 4
#define MULTIBOOT_HEADER_TAG_FRAMEBUFFER 5
#define MULTIBOOT_HEADER_TAG_MODULE_ALIGN 6
#define MULTIBOOT_HEADER_TAG_EFI_BS 7
#define MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS_EFI32 8
#define MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS_EFI64 9
#define MULTIBOOT_HEADER_TAG_RELOCATABLE 10
#define MULTIBOOT_ARCHITECTURE_I386 0
#define MULTIBOOT_ARCHITECTURE_MIPS32 4
#define MULTIBOOT_HEADER_TAG_OPTIONAL 1
#define MULTIBOOT_LOAD_PREFERENCE_NONE 0
#define MULTIBOOT_LOAD_PREFERENCE_LOW 1
#define MULTIBOOT_LOAD_PREFERENCE_HIGH 2
#define MULTIBOOT_CONSOLE_FLAGS_CONSOLE_REQUIRED 1
#define MULTIBOOT_CONSOLE_FLAGS_EGA_TEXT_SUPPORTED 2
struct multiboot_header
{
/* Must be MULTIBOOT_MAGIC - see above. */
u32 magic;
/* ISA */
u32 architecture;
/* Total header length. */
u32 header_length;
/* The above fields plus this one must equal 0 mod 2^32. */
u32 checksum;
};
struct multiboot_header_tag
{
u16 type;
u16 flags;
u32 size;
};
struct multiboot_header_tag_information_request
{
u16 type;
u16 flags;
u32 size;
u32 requests[0];
};
struct multiboot_header_tag_address
{
u16 type;
u16 flags;
u32 size;
u32 header_addr;
u32 load_addr;
u32 load_end_addr;
u32 bss_end_addr;
};
struct multiboot_header_tag_entry_address
{
u16 type;
u16 flags;
u32 size;
u32 entry_addr;
};
struct multiboot_header_tag_console_flags
{
u16 type;
u16 flags;
u32 size;
u32 console_flags;
};
struct multiboot_header_tag_framebuffer
{
u16 type;
u16 flags;
u32 size;
u32 width;
u32 height;
u32 depth;
};
struct multiboot_header_tag_module_align
{
u16 type;
u16 flags;
u32 size;
};
struct multiboot_header_tag_relocatable
{
u16 type;
u16 flags;
u32 size;
u32 min_addr;
u32 max_addr;
u32 align;
u32 preference;
};
struct multiboot_color
{
u8 red;
u8 green;
u8 blue;
};
struct multiboot_mmap_entry
{
u64 addr;
u64 len;
#define MULTIBOOT_MEMORY_AVAILABLE 1
#define MULTIBOOT_MEMORY_RESERVED 2
#define MULTIBOOT_MEMORY_ACPI_RECLAIMABLE 3
#define MULTIBOOT_MEMORY_NVS 4
#define MULTIBOOT_MEMORY_BADRAM 5
u32 type;
u32 zero;
};
typedef struct multiboot_mmap_entry multiboot_memory_map_t;
struct multiboot_tag
{
u32 type;
u32 size;
};
struct multiboot_tag_string
{
u32 type;
u32 size;
u8 string[0];
};
struct multiboot_tag_module
{
u32 type;
u32 size;
u32 mod_start;
u32 mod_end;
u8 cmdline[0];
};
struct multiboot_tag_basic_meminfo
{
u32 type;
u32 size;
u32 mem_lower;
u32 mem_upper;
};
struct multiboot_tag_bootdev
{
u32 type;
u32 size;
u32 biosdev;
u32 slice;
u32 part;
};
struct multiboot_tag_mmap
{
u32 type;
u32 size;
u32 entry_size;
u32 entry_version;
struct multiboot_mmap_entry entries[0];
};
struct multiboot_vbe_info_block
{
u8 external_specification[512];
};
struct multiboot_vbe_mode_info_block
{
u8 external_specification[256];
};
struct multiboot_tag_vbe
{
u32 type;
u32 size;
u16 vbe_mode;
u16 vbe_interface_seg;
u16 vbe_interface_off;
u16 vbe_interface_len;
struct multiboot_vbe_info_block vbe_control_info;
struct multiboot_vbe_mode_info_block vbe_mode_info;
};
struct multiboot_tag_framebuffer_common
{
u32 type;
u32 size;
u64 framebuffer_addr;
u32 framebuffer_pitch;
u32 framebuffer_width;
u32 framebuffer_height;
u8 framebuffer_bpp;
#define MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED 0
#define MULTIBOOT_FRAMEBUFFER_TYPE_RGB 1
#define MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT 2
u8 framebuffer_type;
u16 reserved;
};
struct multiboot_tag_framebuffer
{
struct multiboot_tag_framebuffer_common common;
union
{
struct
{
u16 framebuffer_palette_num_colors;
struct multiboot_color framebuffer_palette[0];
};
struct
{
u8 framebuffer_red_field_position;
u8 framebuffer_red_mask_size;
u8 framebuffer_green_field_position;
u8 framebuffer_green_mask_size;
u8 framebuffer_blue_field_position;
u8 framebuffer_blue_mask_size;
};
};
};
struct multiboot_tag_elf_sections
{
u32 type;
u32 size;
u32 num;
u32 entsize;
u32 shndx;
u8 sections[0];
};
struct multiboot_tag_apm
{
u32 type;
u32 size;
u16 version;
u16 cseg;
u32 offset;
u16 cseg_16;
u16 dseg;
u16 flags;
u16 cseg_len;
u16 cseg_16_len;
u16 dseg_len;
};
struct multiboot_tag_efi32
{
u32 type;
u32 size;
u32 pointer;
};
struct multiboot_tag_efi64
{
u32 type;
u32 size;
u64 pointer;
};
struct multiboot_tag_smbios
{
u32 type;
u32 size;
u8 major;
u8 minor;
u8 reserved[6];
u8 tables[0];
};
struct multiboot_tag_old_acpi
{
u32 type;
u32 size;
u8 rsdp[0];
};
struct multiboot_tag_new_acpi
{
u32 type;
u32 size;
u8 rsdp[0];
};
struct multiboot_tag_network
{
u32 type;
u32 size;
u8 dhcpack[0];
};
struct multiboot_tag_efi_mmap
{
u32 type;
u32 size;
u32 descr_size;
u32 descr_vers;
u8 efi_mmap[0];
};
struct multiboot_tag_efi32_ih
{
u32 type;
u32 size;
u32 pointer;
};
struct multiboot_tag_efi64_ih
{
u32 type;
u32 size;
u64 pointer;
};
struct multiboot_tag_load_base_addr
{
u32 type;
u32 size;
u32 load_base_addr;
};

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@ -1,6 +1,7 @@
CC=gcc -O0 -g -nostdinc -ffreestanding -fno-builtin -fomit-frame-pointer -Wall -w -m32 -F pe-i386 -I ../include CC=gcc -O0 -g -nostdinc -ffreestanding -fno-builtin -fomit-frame-pointer -Wall -w -m32 -F pe-i386 -I ../include
LINK=ld -m elf_i386 -r -o LINK=ld -m elf_i386 -r -o
OBJS=memory.o vga.o video.o mouse.o interrupts.o timer.o keyboard.o types.o string.o 2d.o 3d.o math.o cpu.o gdt.o shell.o syscall.o SRCS= $(wildcard *.c)
OBJS= $(SRCS:.c=.o)
all: makeall all: makeall
@ -11,6 +12,10 @@ libs.o:$(OBJS)
.o: .c .o: .c
$(CC) $^ $(CC) $^
clean: clean:
rm -f *.o rm -f *.o
indent:
indent -linux -i8 -ts8 *.c
indent -linux -i8 -ts8 ./VGA/*.c

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@ -1,6 +1,12 @@
all: makall all: bits32 bits64 floppy harddisk uefi
sync
makall: lib/libs.o system/system.sys final/harddisk.img.final bits32: ARCH=bits32
bits32: lib/libs.o system/system.sys harddisk
sync
bits64: ARCH=bits64
bits64: lib/libs.o system/system.sys uefi
sync sync
floppy: boot/boot12.bin final/floppy.img.final floppy: boot/boot12.bin final/floppy.img.final
@ -26,16 +32,21 @@ littleclean:
(cd final;make littleclean) (cd final;make littleclean)
sync sync
indent:
(cd system; make indent)
(cd lib;make indent)
sync
backup: clean backup: clean
(cd .. ; tar cf - Source\ C | gzip -f - > backup.tar.gz) (cd .. ; tar cf - Source\ C | gzip -f - > backup.tar.gz)
test: all harddisk qemu test: bits32 harddisk qemu
test64: all uefi qemu64 test64: bits64 uefi qemu64
retest: littleclean test retest: littleclean test
retest64: all uefi qemu64 retest64: littleclean test64
floppytest: floppy qemu-floppy floppytest: floppy qemu-floppy
@ -74,7 +85,7 @@ qemu-floppy:
(killall qemu-system-i386;qemu-system-i386 -m 1G -fda ./final/floppy.img.final --enable-kvm -cpu host -s &) (killall qemu-system-i386;qemu-system-i386 -m 1G -fda ./final/floppy.img.final --enable-kvm -cpu host -s &)
system/system.sys: system/system.sys:
(cd system; make) (cd system; make ARCH=$(ARCH))
boot/boot12.bin: boot/boot12.bin:
(cd boot; make) (cd boot; make)

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@ -1,13 +1,12 @@
OUTPUT_FORMAT("elf32-i386", "elf32-i386", OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
"elf32-i386")
OUTPUT_ARCH(i386) OUTPUT_ARCH(i386)
ENTRY(mymain) ENTRY(start)
SECTIONS SECTIONS
{ {
. = 0x100000; . = 0x100000;
.boot ALIGN(4) : .boot ALIGN(8) :
{ {
*(.multiboot) *(.multiboot)
} }

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@ -1,13 +1,18 @@
GCC=gcc -O0 -g -nostdinc -ffreestanding -fno-builtin -fomit-frame-pointer -Wall -w -I ../include -m32 -c -o GCC=gcc -O0 -g -nostdinc -ffreestanding -fno-builtin -fomit-frame-pointer -Wall -w -I ../include -m32 -c -o
ASM=nasm
LINK=ld -m elf_i386 -T linker.lds -e main -n -o LINK=ld -m elf_i386 -T linker.lds -n -o
all: system.sys all: system.sys
sync sync
system.sys: system.sys: multiboot.o system.o ../lib/libs.o
$(LINK) system.sys multiboot.o system.o ../lib/libs.o
system.o:
$(GCC) system.o system.c $(GCC) system.o system.c
$(LINK) system.sys system.o ../lib/libs.o
multiboot.o:
$(ASM) -f elf -o multiboot.o multiboot.asm -dARCH=$(ARCH)
clean: clean:
rm -f *.o rm -f *.o
@ -16,4 +21,5 @@ clean:
rm -f *.sys rm -f *.sys
rm -f *.s rm -f *.s
indent:
indent -linux -i8 -ts8 *.c

63
system/multiboot.asm Normal file
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@ -0,0 +1,63 @@
[BITS 32]
SECTION .multiboot
%define MULTIBOOT_TAG_ALIGN 8
%define MULTIBOOT2_HEADER_MAGIC 0xe85250d6
%define MULTIBOOT_ARCHITECTURE_I386 0
%define MULTIBOOT_HEADER_TAG_OPTIONAL 1
%define MULTIBOOT_HEADER_TAG_CONSOLE_FLAGS 4
%define MULTIBOOT_TAG_TYPE_FRAMEBUFFER 8
%define MULTIBOOT_HEADER_TAG_END 0
%define MULTIBOOT_CONSOLE_FLAGS_EGA_TEXT_SUPPORTED 2
%defstr arch ARCH
multiboot_header:
align MULTIBOOT_TAG_ALIGN
dd MULTIBOOT2_HEADER_MAGIC ; magic
dd MULTIBOOT_ARCHITECTURE_I386 ; architecture
dd multiboot_header_end - multiboot_header
dd -(MULTIBOOT2_HEADER_MAGIC + MULTIBOOT_ARCHITECTURE_I386 + (multiboot_header_end - multiboot_header))
align MULTIBOOT_TAG_ALIGN
%if arch = "bits32"
%warning "Avec la console VGA/EGA."
console_tag_start:
dw MULTIBOOT_HEADER_TAG_CONSOLE_FLAGS ; type
dw MULTIBOOT_HEADER_TAG_OPTIONAL ; flags
dd console_tag_end - console_tag_start
dd MULTIBOOT_CONSOLE_FLAGS_EGA_TEXT_SUPPORTED
console_tag_end:
%else
align MULTIBOOT_TAG_ALIGN
framebuffer_tag_start:
%warning "Avec le FRAMEBUFFER VESA."
dw MULTIBOOT_TAG_TYPE_FRAMEBUFFER ; type
dw MULTIBOOT_HEADER_TAG_OPTIONAL ; flags
dd framebuffer_tag_end - framebuffer_tag_start
dd 1024 ; width
dd 768 ; height
dd 32 ; depth
%endif
align MULTIBOOT_TAG_ALIGN
framebuffer_tag_end:
dw MULTIBOOT_HEADER_TAG_END
dw 0
dd 8
multiboot_header_end:
SECTION .text
global start
extern main
start:
push ebx
push eax
call main
hlt

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@ -12,8 +12,7 @@
#include "gdt.h" #include "gdt.h"
#include "shell.h" #include "shell.h"
#include "syscall.h" #include "syscall.h"
#include "multiboot2.h"
static u8 __attribute__((section(".multiboot"))) magicmultiboot[28]={0xD6,0x50,0x52,0xE8,0x00,0x00,0x00,0x00,0x18,0x00,0x00,0x00,0x12,0xaf,0xad,0x17,0x00,0x00,0x00,0x00,0x08,0x00,0x00,0x00};
static u8 warnmsg[] = static u8 warnmsg[] =
"\033[99C\033[8D\033[37m\033[1m[ \033[36mNON\033[37m ]\033[0m\000"; "\033[99C\033[8D\033[37m\033[1m[ \033[36mNON\033[37m ]\033[0m\000";
@ -41,12 +40,16 @@ void error()
return; return;
} }
int main(void) int main(unsigned long magic, unsigned long addr)
{ {
asm("movl $0x0000FFFF, %esp");
cli(); cli();
setvmode(0x02); setvmode(0x02);
/* Efface l'ecran */ /* Efface l'ecran */
if (magic != MULTIBOOT2_BOOTLOADER_MAGIC)
{
printf ("Nombre magic inconnu: 0x%x\n", (u32) magic);
return;
}
print("\033[2J\000"); print("\033[2J\000");
printf(ansilogo); printf(ansilogo);