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Set framebuffer tag in multiboot header and add vesa grub menu entries

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This commit is contained in:
Achilleas Anagnostopoulos 2017-07-13 22:05:29 +01:00
parent eaeae85600
commit 16ad4c856e
2 changed files with 38 additions and 11 deletions
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18
src/arch/x86_64/asm/multiboot_header.s
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@ -24,14 +24,16 @@ header_start:
dd 12 ; size dd 12 ; size
dd 0x3 ; kernel supports EGA console dd 0x3 ; kernel supports EGA console
; Define graphics mode tag ; Define graphics mode tag to advise the bootloader that the kernel
;align 8 ; tags should be 64-bit aligned ; supports framebuffer console. Ssetting 0 for width, height and bpp
;dw 5 ; type ; indicates no particular mode preference.
;dw 0 ; flags align 8 ; tags should be 64-bit aligned
;dd 20 ; size dw 5 ; type
;dd 80 ; width (pixels or chars) dw 0 ; flags
;dd 25 ; height (pixels or chars) dd 20 ; size
;dd 0 ; bpp (0 for text mode dd 0 ; width (pixels or chars)
dd 0 ; height (pixels or chars)
dd 0 ; bpp (0 for text mode)
; According to page 6 of the spec, the tag list is terminated by a tag with ; According to page 6 of the spec, the tag list is terminated by a tag with
; type 0 and size 8 ; type 0 and size 8

31
src/arch/x86_64/script/grub.cfg
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@ -1,7 +1,32 @@
set timeout=0 set timeout=3
set default=0 set default=1
menuentry "gopheros" { menuentry "gopheros (800x600)" {
multiboot2 /boot/kernel.bin multiboot2 /boot/kernel.bin
set gfxpayload=800x600
boot
}
menuentry "gopheros (1024x768)" {
multiboot2 /boot/kernel.bin
set gfxpayload=1024x768
boot
}
menuentry "gopheros (1280x1024)" {
multiboot2 /boot/kernel.bin
set gfxpayload=1280x1024
boot
}
menuentry "gopheros (2560x1600)" {
multiboot2 /boot/kernel.bin
set gfxpayload=2560x1600x16
boot
}
menuentry "gopheros (text-mode)" {
multiboot2 /boot/kernel.bin
set gfxpayload=text
boot boot
} }