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Kernel: Add video mode request for bootloader

This commit is contained in:
Bananymous 2022-12-10 03:55:24 +02:00
parent 03e7812cae
commit e1a15a4989
1 changed files with 15 additions and 5 deletions
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20
kernel/arch/i386/boot.S
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@ -1,9 +1,10 @@
# Declare constants for the multiboot header # Declare constants for the multiboot header
.set ALIGN, 1<<0 # align loaded modules on page boundaries .set ALIGN, 1<<0 # align loaded modules on page boundaries
.set MEMINFO, 1<<1 # provide memory map .set MEMINFO, 1<<1 # provide memory map
.set MB_FLAGS, ALIGN | MEMINFO # this is the Multiboot 'flag' field .set VIDEOINFO, 1<<2 # provide video info
.set MB_MAGIC, 0x1BADB002 # 'magic number' lets bootloader find the header .set MB_FLAGS, ALIGN | MEMINFO | VIDEOINFO # this is the Multiboot 'flag' field
.set MB_CHECKSUM, -(MB_MAGIC + MB_FLAGS) #checksum of above, to prove we are multiboot .set MB_MAGIC, 0x1BADB002 # 'magic number' lets bootloader find the header
.set MB_CHECKSUM, -(MB_MAGIC + MB_FLAGS) #checksum of above, to prove we are multiboot
# Multiboot header # Multiboot header
.section .multiboot .section .multiboot
@ -11,6 +12,15 @@
.long MB_MAGIC .long MB_MAGIC
.long MB_FLAGS .long MB_FLAGS
.long MB_CHECKSUM .long MB_CHECKSUM
.skip 4
.skip 4
.skip 4
.skip 4
.skip 4
.long 1
.long 80
.long 25
.long 0
# Create stack # Create stack
.section .bss .section .bss