StupidOS/boot/loader/multiboot.inc

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MULTIBOOT_HDR_MAGIC = 0x1BADB002
MULTIBOOT_MAGIC = 0x2BADB002
MULTIBOOT_HDR_ALIGN = 0x1
MULTIBOOT_HDR_MEMINFO = 0x2
MULTIBOOT_HDR_VIDEO = 0x4
MULTIBOOT_HDR_AOUT_KLUDGE = 0x10000
MULTIBOOT_FLAGS = MULTIBOOT_HDR_ALIGN or MULTIBOOT_HDR_MEMINFO or MULTIBOOT_HDR_VIDEO or MULTIBOOT_HDR_AOUT_KLUDGE
struc MultibootHeader addr
{
.magic dd MULTIBOOT_HDR_MAGIC
.flags dd MULTIBOOT_FLAGS
.checksum dd -(MULTIBOOT_HDR_MAGIC + MULTIBOOT_FLAGS)
; address fields (we'll just skip them)
.header_addr dd addr
.load_addr dd LOADER_BASE
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.load_end_addr dd _edata
.bss_end_addr dd _end
.entry_addr dd _start
; Video mode
.mode_type dd 0x0
.width dd VIDEO_WIDTH
.height dd VIDEO_HEIGHT
.depth dd VIDEO_DEPTH
}
struc MultibootData
{
.flags dd ?
; if flags[0] is set
.mem_lower dd ?
.mem_upper dd ?
; if flags[1] is set
.boot_device dd ?
; if flags[2] is set
.cmdline dd ?
; if flags[3] is set
.mods_count dd ?
.mods_addr dd ?
; if flags[4] is set
.syms dd 4 dup ?
; if flags[6] is set
.mmap_length dd ?
.mmap_addr dd ?
; if flags[7] is set
.drives_length dd ?
.drives_addr dd ?
; if flags[8] is set
.config_table dd ?
; if flags[9] is set
.bootloader_name dd ?
; if flags[10] is set
.apm_table dd ?
; if flags[11] is set
.vbe_control_info dd ?
.vbe_mode_info dd ?
.vbe_mode dw ?
.vbe_if_seg dw ?
.vbe_if_off dw ?
.vbe_if_length dw ?
; if flags[12] is set
.fb_addr dq ?
.fb_pitch dd ?
.fb_width dd ?
.fb_height dd ?
.fb_bpp db ?
.fb_type db ?
.fb_misc dw 3 dup ?
}
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DEFN MultibootData
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MULTIBOOT_DATA_MEM = 0x0001
MULTIBOOT_DATA_BOOTDEV = 0x0002
MULTIBOOT_DATA_CMDLINE = 0x0004
MULTIBOOT_DATA_MODULES = 0x0008
MULTIBOOT_DATA_MMAP = 0x0040
MULTIBOOT_DATA_DRIVES = 0x0080
MULTIBOOT_DATA_BOOTLOADER_NAME = 0x0200
MULTIBOOT_DATA_VBE = 0x0800
MULTIBOOT_DATA_FB = 0x1000
struc MultibootMMap
{
.size dd ?
.addr dq ?
.length dq ?
.type dd ?
}
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DEFN MultibootMMap
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MULTIBOOT_MEMORY_AVAILABLE = 0x1
MULTIBOOT_MEMORY_RESERVED = 0x2
MULTIBOOT_MEMORY_ACPI = 0x3
MULTIBOOT_MEMORY_NVS = 0x4
MULTIBOOT_MEMORY_BADPARAM = 0x5
struc MultibootModule
{
.mod_start dd ?
.mod_end dd ?
.cmdline dd ?
.pad dd ?
}
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DEFN MultibootModule