Bananymous
6ac3681604
Bootloader: Implement loading for 32 bit ELF files.
2024-04-02 15:30:35 +03:00
Bananymous
b35cad0c2e
Bootloader allow installation when BANAN_ARCH=i686
2024-04-02 12:48:35 +03:00
Bananymous
ca23360d07
Bootloader: Fix GDRT pointer size to 32 bits
2024-03-26 03:04:57 +02:00
Bananymous
dfe5a2d665
All: Cleanup all files
...
Add newline to end of files and remove whitespace from end of lines
2024-01-24 15:53:38 +02:00
Bananymous
7e36a0be75
Bootloader: Add .data section
2024-01-12 19:27:36 +02:00
Bananymous
ff2486f58c
Bootloader: Try to enable A20 line if it is disabled
...
VirtualBox seems to have A20 disabled by default
2024-01-12 02:55:06 +02:00
Bananymous
2fec718590
Bootloader: cleanup code
2024-01-08 10:50:55 +02:00
Bananymous
ccaa159a73
Bootloader: Add support for ext2 blocks up to 4 KiB
...
This should work with blocks bigger than that, but my linux system
only supports up to 4 KiB, so I cannot test this.
This allows getting rid of forced block size in mkfs and let the
program select appropriately sized blocks.
2024-01-03 18:26:03 +02:00
Bananymous
7356a83a44
Bootloader: Optimize some unnecessary branches on carry add/sub
2024-01-03 17:05:33 +02:00
Bananymous
2a68df81e2
Bootloader: Fix bootloader on bochs
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Bochs int 0x10 seems to scrap full ebp and top bits in some
registers. I now save all 32-bit registers on call frame. Also
ebp is across all int 0x10 calls.
2024-01-03 13:09:55 +02:00
Bananymous
50ca2ac09e
Bootloader: Interpret 0x7F (DEL) as backspace
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This allows backspace to work over qemu's serial connection
2024-01-03 11:58:50 +02:00
Bananymous
3f3e81fcf2
Bootloader: Align boot information passed to kernel
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UBSAN found this bug
2023-12-14 10:52:51 +02:00
Bananymous
abc69fa3d5
Bootloader: Search framebuffer information from kernel memory
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Framebuffer information is no longer hard coded into bootloader.
Kernel can define framebuffer info structure in its memory which is
used for finding proper video mode.
2023-12-09 17:32:10 +02:00
Bananymous
8b01e2d4a2
Bootloader: Generalize framebuffer video mode search
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Framebuffer size is now taken as arguments to vesa_find_video_mode
2023-12-09 16:48:04 +02:00
Bananymous
25485069e6
Bootloader: Add cache to ext2 inode data block indices
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This reduces the number of read calls with current kernel size from
~1700 to ~700 (60% performance boots). Loading the kernel is now alot
faster.
2023-11-22 13:54:53 +02:00
Bananymous
f80bd040c8
Bootloader: add missing size directive
2023-11-21 19:11:48 +02:00
Bananymous
9e44e8be75
Buildsystem: default bootloader is not my custom one
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You can set BANAN_BOOTLOADER=GRUB to use grub instead. Image creation
does not convert disk image now automatically between bootloaders and
calling ./bos image-full is now required.
2023-11-18 17:18:03 +02:00
Bananymous
cd646a1ab7
Bootloader do some directory restructuring
2023-11-18 13:59:45 +02:00
Bananymous
c9e9cfd361
Bootloader: Implement VESA video mode query and pass it to kernel
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Kernel now gets framebuffer from bootloader. Framebuffer dimensions
and bpp are hardcoded in bootloader, but will probably be read from
config file at some point.
2023-11-17 22:45:35 +02:00
Bananymous
ac96ea3370
Bootloader: Fix kernel memset to zero
2023-11-17 21:05:02 +02:00
Bananymous
ef53aab24a
Bootloader add temporary initial command line
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This will probably be read from some config file at some point
2023-11-17 20:38:38 +02:00
Bananymous
cb5a5d3ed1
Kernel/Bootloader: banan-os can now be booted with my bootloader :D
2023-11-17 20:33:02 +02:00
Bananymous
d1444761a3
Bootloader: Clear screen, better memcpy
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Clear screen before jumping to kernel. Memcpy now uses ebx as offset
register, so only one register has to updated every loop
2023-11-17 20:31:42 +02:00
Bananymous
641a2dec00
Bootloader: Load kernel to memory and jump to it!
2023-11-17 16:36:29 +02:00
Bananymous
9e69053e64
Bootloader enter unreal mode at the start of stage2
2023-11-17 14:22:21 +02:00
Bananymous
1a415a380a
Bootloader: Fix getting command line
2023-11-17 13:17:44 +02:00
Bananymous
a19c5c672b
Bootloader: implement reading from inode
2023-11-17 13:17:44 +02:00
Bananymous
3bcbc7c018
Bootloader: add support for indirect inode blocks
2023-11-16 13:34:21 +02:00
Bananymous
b371abade5
Bootloader: Add helpers for printing n bit hexadecimal numbers
2023-11-16 13:30:01 +02:00
Bananymous
9d4101e0c5
Bootloader: Implement basic ext2 filesystem
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This can search for files in an ext2 filesystem. Only 12 blocks
are currently supported.
Now only ELF loading is missing for loading the actual kernel!
2023-11-15 16:58:26 +02:00
Bananymous
c791a1c200
Bootloader: Build with cmake instead of custom script
2023-11-14 03:44:47 +02:00
Bananymous
bd3f2bb61c
Bootloader: Split bootloader into multiple files
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This cleans up the code since bootloader is starting to near 1k lines
2023-11-14 03:27:52 +02:00
Bananymous
7ca9a961b3
Bootloader move bootloader code from arch directory
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The os itself only supports x86 so this won't matter. x86_64 and i386
use the same bootloader assembly.
2023-11-13 21:42:58 +02:00
Bananymous
cbb9422ee0
Bootloader: installer now uses banan os elf headers intead of Linux's
2023-11-13 21:40:15 +02:00
Bananymous
048bbf874a
Bootloader: Find root partition from GPT header
2023-11-13 18:55:48 +02:00
Bananymous
d2970b5b8d
Bootloader: installer now patches GPT GUID's
2023-11-13 18:53:55 +02:00
Bananymous
0004d3b435
Bootloader: Add API to create GUID from string
2023-11-13 18:52:41 +02:00
Bananymous
d5aa08baa5
BuildSystem: add bootloader target
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Use this target to run banan-os with custom bootloader
2023-11-12 01:50:30 +02:00
Bananymous
381cfdad77
Bootloader: Continue work on bootloader
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Bootloader can now get the memory map and read cmdline from user.
Now 'just' video mode query, ext2 and ELF parsing are needed :D
2023-11-11 22:49:00 +02:00
Bananymous
cfc7313451
Bootloader: Start work on bootloader
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I wrote a fast first stage bootloader and a installer to put it into
a disk image.
2023-11-09 22:42:47 +02:00
Bananymous