095822fa27
inlined ClusterToLBA
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removed caller save kludge for now
init first_root_dir_sector from ebpb data
2024-10-11 15:55:24 -04:00
71f13fd6b5
somewhat of a cludge, but added a macro to save all caller saved regs
2024-10-11 14:25:01 -04:00
802d47fbf7
fix passing stage2 wrong data for boot drive
2024-10-11 13:09:17 -04:00
4af0637c7f
use kmemset to 0 out fat32_state in InitFATDriver
2024-10-11 13:00:45 -04:00
07197b0d5b
reduce proceedure local storage to 16 bytes
2024-10-11 12:59:36 -04:00
056551fdd1
rename file to BOOT.BIN
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K.I.S.S.
2024-10-11 12:16:01 -04:00
0aae0616fd
more comments to seperate setups
2024-10-11 12:08:09 -04:00
aff631f3db
force 1-1 logical to physical sectors
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copy our VBR code to backup VBR
2024-10-11 12:04:44 -04:00
a3a768adf4
more error handling in detecting disk image creation
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will need ported to macOS sometime
2024-10-11 11:44:04 -04:00
d684d4f11f
more error handling for dd writes
2024-10-11 11:31:38 -04:00
75c046f9cd
use gs for vesa framebuffer (was fs)
2024-10-08 20:23:16 -04:00
00daf92df5
unreal gdt now has 2 selectors 1 code, 1 data
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ss, and e/f/g segments are loaded to the same flat 4gb segment
moved gdt notes to documentation
2024-10-08 20:22:21 -04:00
5ab7e70455
Update README.md
2024-10-08 09:08:47 -04:00
6ae68d1a19
ensure 2 byte jmp rel8 thunk to init
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surpress reloc abs warnings
corrected include paths/filenames
2024-10-08 08:55:17 -04:00
586f3f0106
converted error handler to a 16bit far jump
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optimized the early error printer a bit to save some bytes
removed DEBUG_HCF macro
2024-10-08 08:53:30 -04:00
8301fc20a8
renamed files to show code vs defs
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files that actually include code should be in .nasm files
defines/macros/non-code should be in .inc files
2024-10-07 20:41:15 -04:00
4218a08658
force the first jump to init in all stages to be the rel8 version
2024-10-07 20:39:39 -04:00
2bbdaddb68
jmp imm32 vs jmp rel8 (5 bytes vs 2 bytes)
2024-10-06 21:46:32 -04:00
213ea11209
cutting out everything from miniboot
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this file has always just been a place holder to get some code to load from the disk
I wanted to cut out all the extra stuff in it just to simplify things down.
2024-10-06 18:52:20 -04:00
e41b597056
surpress some of the relocation warnings for mbr, vbr & stage2
2024-10-06 18:50:32 -04:00
f33ecbcea2
make the Linux bochs run more inline with the Windows one
2024-10-06 15:37:19 -04:00
03a09ed54b
Merge pull request #2 from Nivirx/FAT_Refactor
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Full refactor for modularization
2024-10-05 20:19:51 -04:00
145e9fbaa9
fixed read_disk_raw in ReadFATCluster
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boot_drive and partition_offset are global pointers now
removed an extra error from mbr disk read
and some general formating and cleanup 😅
2024-10-05 20:14:00 -04:00
8f95c8f267
tons more work on modularizing the code
2024-10-05 18:55:00 -04:00
5440a1ae61
more modularization and updating date in MIT licence header
2024-10-05 13:35:39 -04:00
d6af15a7a6
typo fix
2024-10-05 12:16:31 -04:00
a4fa48949c
Move fat32 and BIOS functions to their own files
2024-10-05 12:04:40 -04:00
0a1123c5b5
removed extra part probe and added sleep before removing disk
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also back to putting the test 32bit mode code on the root of the volume
2024-10-05 10:14:02 -04:00
e162e268c4
remove the dword stack macros and just use the 32bit override
2024-10-05 10:13:18 -04:00
62f036b645
change test kernel stage name
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also pointed up a bug in memory.inc
2024-10-04 22:17:35 -04:00
fdbfd811d5
increased disk size and moved bpb/ebpb a bit
2024-10-04 14:26:10 -04:00
d93236d298
some bpb/ebpb tweaks
2024-10-04 11:48:25 -04:00
86fd76e909
remove old kmem functions
2024-10-04 09:57:32 -04:00
3f029e6b4c
vbr cdecl overhaul
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refactored read_disk_raw to read_stage2_raw
switched to new kmem functions
2024-10-04 09:56:41 -04:00
30c4f1b82c
move cdecl macros to nearly the top so early functions can use them
2024-10-04 09:55:45 -04:00
597132df9f
cdecl16 overhaul for mbr code
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switch to cdecl kmem* functions
refactored read_disk_raw to read_vbr_raw
fixed a small issue where the mbr wasn't checking its signature
2024-10-04 09:55:19 -04:00
63e6f1fac8
kmemset and kmemcpy cdecl16 versions
2024-10-04 09:53:01 -04:00
4ee766304b
seperate error code for reading disk in mbr vs vbr vs stage2
2024-10-04 09:52:24 -04:00
d5aa70daf3
add macros to prevent __CDECL16 stuff from being defined multiple times
2024-10-04 09:51:44 -04:00
ec1f40c305
added isoz stage to make a compressed disk image
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also included a work around for a WSL bug in create-disk.sh
2024-10-04 07:57:56 -04:00
36e3bd968a
change FAT partition type to 0Ch from 0Bh (W95 FAT32 LBA was CHS/LBA)
2024-10-03 21:00:49 -04:00
36b8869140
add bpb and ebpb reserve area back to vbr.nasm
2024-10-03 21:00:02 -04:00
41b9bf5134
remove this and add it back to vbr.nasm
2024-10-03 20:59:25 -04:00
b96f587921
add forked functions and remove from memory.inc for kmem*
2024-10-03 19:53:11 -04:00
89ebe30ad8
forking kmemset functions for stage2 usage
2024-10-03 19:52:24 -04:00
e98cc41403
forking kmemset functions to be updated later for mbr/vbr
2024-10-03 19:52:00 -04:00
27c41c8b0a
update some of the dword stack macros
2024-10-03 19:33:07 -04:00
015def8d52
rough pass on fixing the stack across the board
2024-10-03 19:02:47 -04:00
8157dd301c
swap order of entering Unreal mode and getting an E820
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also InitFATDriver should be ok to add to the start process again.
2024-10-03 18:15:18 -04:00
4d05d2ae4c
move E820 function desc to memory.inc
2024-10-03 18:14:04 -04:00
