Commit Graph

63 Commits

Author SHA1 Message Date
e12ea89fda changing names of values to match spec more
also added prototype for FS info printer that will print some basic santity check type info.
2024-10-17 07:50:37 -04:00
e33f010f73 added carry and divz checks across the fat32 code
also use the pointers we have in bss to our saved data
2024-10-16 11:58:57 -04:00
c9f4b18d2b some debuging text for fat32 stuff 2024-10-15 20:37:49 -04:00
e680620148 remove some redundant reloads of si
use xchg to swap si/di instead of the stack
uninline ClusterToLBA call
2024-10-15 20:01:24 -04:00
56e8081118 magic debug before touching anything in error printer 2024-10-15 13:31:51 -04:00
5f9567d44e include disk signature and reserved bytes in part table struct 2024-10-15 12:51:34 -04:00
2020408e8d ha ha ha, again! 2024-10-15 12:51:02 -04:00
4660882edb change entry points (again) 2024-10-14 17:58:43 -04:00
f683b8fd17 16 KiB stage2 2024-10-14 17:58:30 -04:00
56c18d8457 correct drive_num argument on read_disk_raw 2024-10-14 13:18:41 -04:00
cfda93048b replace text documentation with markdown 2024-10-14 10:44:44 -04:00
c49de28a15 use bochs magic breakpoints in the error printer
makes it easier to get a good state to do some investigating before reseting.
2024-10-13 20:53:13 -04:00
cd833184da use bx addressing in read_disk_raw 2024-10-13 20:51:16 -04:00
f51d8b4142 initial work on a macro to call read_disk_raw 2024-10-13 16:37:52 -04:00
3693eca940 add reserved space for jmp short init at the start, technically this is part of the bpb anyways 2024-10-13 16:37:29 -04:00
a383f7cfb4 remove defs for memory locations (moving to bss) 2024-10-13 16:36:55 -04:00
eb97aac673 relocate code sections to end up with stage2 starting at 0x500 2024-10-12 22:14:47 -04:00
c60bad1066 reduced stage2 to 24KiB 2024-10-12 22:13:12 -04:00
050f90517a follow standard proceedure and reallocate the mbr to 0x600 2024-10-12 21:21:43 -04:00
555cf1271b partially roll back changing the segment to 0x07E0 2024-10-12 20:25:04 -04:00
b49b2bae68 correct typo 2024-10-12 15:39:16 -04:00
5abbfa4d15 definition corrections in part table stuff 2024-10-12 15:39:04 -04:00
ac6ad77249 renamed mem.inc and removed unused items 2024-10-12 15:38:24 -04:00
bc89850c00 first version of kmemcpy5/kmemset4 2024-10-12 14:48:26 -04:00
12fc8a1e37 use NASM defined size value from structure macro 2024-10-12 12:58:32 -04:00
baa146bef5 BIOSMemoryMap is a location in bss now, use lea 2024-10-12 12:58:16 -04:00
5a74cd86ad moved stuff that is only referenced in Stage2 to stage2 bss 2024-10-12 12:55:29 -04:00
9cde0333e6 remove PRINT_FUNC macro...this isn't it chief 2024-10-12 11:27:55 -04:00
a3f0684c85 added bochs debug wrappers 2024-10-11 19:03:27 -04:00
a8da6eef72 split e820 bios call documentation to its own file under docs/ 2024-10-11 17:20:53 -04:00
d9e46f5571 correct src size in op 2024-10-11 16:52:57 -04:00
0250d9351d inlined ClusterToLBA
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
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
d88b1bcb70 use gs for vesa framebuffer (was fs) 2024-10-08 20:23:16 -04:00
09d33086a0 converted error handler to a 16bit far jump
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
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
4c4c3b0e27 fixed read_disk_raw in ReadFATCluster
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
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
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
c1c6b25e6e remove old kmem functions 2024-10-04 09:57:32 -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