diff options
Diffstat (limited to 'src/arch/x86/common/boot/multiboot2.S')
| -rw-r--r-- | src/arch/x86/common/boot/multiboot2.S | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/arch/x86/common/boot/multiboot2.S b/src/arch/x86/common/boot/multiboot2.S new file mode 100644 index 0000000..d767ca0 --- /dev/null +++ b/src/arch/x86/common/boot/multiboot2.S @@ -0,0 +1,42 @@ +/* multiboot tags */ +.set TAG_END, 0 +.set TAG_FRAMEBUFFER, 5 + +/* multiboot flags */ +.set TAG_REQUIRED, 0 +.set TAG_OPTIONAL, 1 + +/* multiboot2 header constants */ +.set MAGIC, 0xe85250d6 +.set ARCH, 0 +.set HEADER_LENGTH, (header_end - header_start) +.set CHECKSUM, 0x100000000 - (MAGIC + ARCH + HEADER_LENGTH) + +.section .multiboot2.header, "a" +.align 4 +header_start: + /* magic */ + .align 8 + .long MAGIC + .long ARCH + .long HEADER_LENGTH + .long CHECKSUM + +/* + // framebuffer + .align 8 + .word TAG_FRAMEBUFFER + .word TAG_REQUIRED + .long 20 + .long 1024 + .long 768 + .long 32 +*/ + + /* end tag */ + .align 8 + .word TAG_END + .word TAG_REQUIRED + .long 8 + +header_end: |