diff options
| author | Michal Idziorek <m.i@gmx.at> | 2014-09-05 02:36:33 +0200 |
|---|---|---|
| committer | Michal Idziorek <m.i@gmx.at> | 2014-09-05 02:36:33 +0200 |
| commit | b75c10c9d8c7405ba2f89724b485154d5201c404 (patch) | |
| tree | 6ce30784f4d7bbb5ca2a5cb636da7fa2186bee57 /boot/stage2.asm | |
| parent | 467e19b262d435f1820539bc0c85ed4fa31b9687 (diff) | |
working on bootloaders (lba)
Diffstat (limited to 'boot/stage2.asm')
| -rw-r--r-- | boot/stage2.asm | 32 |
1 files changed, 20 insertions, 12 deletions
diff --git a/boot/stage2.asm b/boot/stage2.asm index 27f9832..de2497e 100644 --- a/boot/stage2.asm +++ b/boot/stage2.asm @@ -55,16 +55,13 @@ BOOT_DRIVE: STR_VERSION: db "Fool Loader Stage 2 v0.5",0 -VESA_CHECK1: - db "1",0 -VESA_CHECK2: - db "2",0 -VESA_CHECK3: - db "3",0 -CHECK_A20: - db "A",0 STR_LOAD db "Loading Kernel...",0 +STR_BOOT + db "Boot Drive: ",0 +MEMMAP_INFO: + db "Getting Memory Map from BIOS.",0 + ; ;;lets put our temporary GDT (Global Descriptor Table) here ;;kernel should move this away @@ -90,27 +87,38 @@ STR_LOAD boot_16: + mov [BOOT_DRIVE],dl ; pr info mov bx, STR_VERSION call print_string call print_nextline -; remember BOOT_DRIVE again - mov [BOOT_DRIVE],dl + mov bx, STR_BOOT + call print_string + mov al,dl + call print_hex_byte + call print_nextline -; Load the KERNEL Image + ;show bootdrive + + ; Load the KERNEL Image mov bx, STR_LOAD call print_string call print_nextline call disk_load_16 - + + ; memmap message + mov bx,MEMMAP_INFO + call print_string + call print_nextline ;get memory map from bios before we enter 32 bit protected mode mov ax,0 ; set target address in es:di (0:offset) mov es,ax mov di,MEMMAP_OFFSET call BiosGetMemoryMap ; this will also put the number of entries ; of the memory map at MEMMAP_SIZE_OFFSET + call VesaSetup call switch_to_pm |