/*******************************************************************************/
/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas             */
/*                                                                             */

#define MULTIBOOT_SEARCH                        32768
#define MULTIBOOT_HEADER_ALIGN                  8
#define MULTIBOOT2_HEADER_MAGIC                 0xe85250d6
#define MULTIBOOT2_BOOTLOADER_MAGIC             0x36d76289
#define MULTIBOOT_MOD_ALIGN                     0x00001000
#define MULTIBOOT_INFO_ALIGN                    0x00000008
#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

.section .multiboot, "a"
.align MULTIBOOT_HEADER_ALIGN
multiboot_header:
.long	MULTIBOOT2_HEADER_MAGIC
.long	MULTIBOOT_ARCHITECTURE_I386
.long	multiboot_header_end - multiboot_header
.long	-(MULTIBOOT2_HEADER_MAGIC + MULTIBOOT_ARCHITECTURE_I386 + (multiboot_header_end - multiboot_header))
#ifdef VESA
#warning VESA active
framebuffer_tag_start:
.align MULTIBOOT_HEADER_ALIGN
.short MULTIBOOT_HEADER_TAG_FRAMEBUFFER
.short MULTIBOOT_HEADER_TAG_OPTIONAL
.long framebuffer_tag_end - framebuffer_tag_start
.long 1024
.long 768
.long 32
framebuffer_tag_end:
#endif
.align MULTIBOOT_HEADER_ALIGN
.short MULTIBOOT_HEADER_TAG_END
.short 0
.long 8
multiboot_header_end:
.section .text
.globl  start
start:
pushl   %ebx
pushl   %eax
call    main
hlt