0250d9351d
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
e8fb22c826
somewhat of a cludge, but added a macro to save all caller saved regs
2024-10-11 14:25:01 -04:00
df3b8dfc0c
fix passing stage2 wrong data for boot drive
2024-10-11 13:09:17 -04:00
3a819a685a
use kmemset to 0 out fat32_state in InitFATDriver
2024-10-11 13:00:45 -04:00
5ccd2fb12f
reduce proceedure local storage to 16 bytes
2024-10-11 12:59:36 -04:00
ccb82f29fc
rename file to BOOT.BIN
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K.I.S.S.
2024-10-11 12:16:01 -04:00
f665d7fcaa
more comments to seperate setups
2024-10-11 12:08:09 -04:00
94034eb7bf
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
ab21f9c838
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
2f391a0fc2
more error handling for dd writes
2024-10-11 11:31:38 -04:00
d88b1bcb70
use gs for vesa framebuffer (was fs)
2024-10-08 20:23:16 -04:00
13ff42a7d1
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
61f27cabd7
Update README.md
2024-10-08 09:08:47 -04:00
6643e3c990
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
09d33086a0
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
8e05e071e8
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
ca195e6048
force the first jump to init in all stages to be the rel8 version
2024-10-07 20:39:39 -04:00
db45a5cf8b
jmp imm32 vs jmp rel8 (5 bytes vs 2 bytes)
2024-10-06 21:46:32 -04:00
aac964c378
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
3c40190f23
surpress some of the relocation warnings for mbr, vbr & stage2
2024-10-06 18:50:32 -04:00
39e977ea2c
make the Linux bochs run more inline with the Windows one
2024-10-06 15:37:19 -04:00
7e0cd2a931
Merge pull request #2 from Nivirx/FAT_Refactor
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Full refactor for modularization
2024-10-05 20:19:51 -04:00
4c4c3b0e27
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
f5f5a330cd
tons more work on modularizing the code
2024-10-05 18:55:00 -04:00
446dd451be
more modularization and updating date in MIT licence header
2024-10-05 13:35:39 -04:00
64f2453d61
typo fix
2024-10-05 12:16:31 -04:00
867232890e
Move fat32 and BIOS functions to their own files
2024-10-05 12:04:40 -04:00
bcb9fc2176
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
a0df1cb100
remove the dword stack macros and just use the 32bit override
2024-10-05 10:13:18 -04:00
6b2b1d2fc9
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
aae0d6b5b3
increased disk size and moved bpb/ebpb a bit
2024-10-04 14:26:10 -04:00
db1d0295c5
some bpb/ebpb tweaks
2024-10-04 11:48:25 -04:00
c1c6b25e6e
remove old kmem functions
2024-10-04 09:57:32 -04:00
ecd858f030
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
e45f1cb27d
move cdecl macros to nearly the top so early functions can use them
2024-10-04 09:55:45 -04:00
a6a774484f
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
438b784f2d
kmemset and kmemcpy cdecl16 versions
2024-10-04 09:53:01 -04:00
abd8cba080
seperate error code for reading disk in mbr vs vbr vs stage2
2024-10-04 09:52:24 -04:00
d0635f4f3a
add macros to prevent __CDECL16 stuff from being defined multiple times
2024-10-04 09:51:44 -04:00
4e7a9e00d7
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
e3f0d34336
change FAT partition type to 0Ch from 0Bh (W95 FAT32 LBA was CHS/LBA)
2024-10-03 21:00:49 -04:00
60ad0d71e0
add bpb and ebpb reserve area back to vbr.nasm
2024-10-03 21:00:02 -04:00
d16323bac1
remove this and add it back to vbr.nasm
2024-10-03 20:59:25 -04:00
339216f6a2
add forked functions and remove from memory.inc for kmem*
2024-10-03 19:53:11 -04:00
f8585889f1
forking kmemset functions for stage2 usage
2024-10-03 19:52:24 -04:00
51d77eda6f
forking kmemset functions to be updated later for mbr/vbr
2024-10-03 19:52:00 -04:00
91c37df3d0
update some of the dword stack macros
2024-10-03 19:33:07 -04:00
e03322b129
rough pass on fixing the stack across the board
2024-10-03 19:02:47 -04:00
7fbb9b13e2
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
3f72d5ad31
move E820 function desc to memory.inc
2024-10-03 18:14:04 -04:00
