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419 Commits

Author SHA1 Message Date
Bananymous 04bb08d27f Kernel: Add basic PCI enumeration 2023-02-26 02:56:53 +02:00
Bananymous 390a747768 Kernel: Add prefs font for terminal output before file system 2023-02-23 01:22:50 +02:00
Bananymous a4980acc88 Kernel: Fonts can now be parsed from the filesystem and set to terminal 
We currently dont have a fallback font if we cannot get to filesystem
initialization, but that will come later. I can't test on real hardware
for this reason.
 2023-02-22 22:29:31 +02:00
Bananymous 0e668738dc Kernel: Make some basic bitmap font parsing code 2023-02-22 22:28:12 +02:00
Bananymous a3e9e7d125 Kernel: Fix some shell commands 2023-02-22 21:55:32 +02:00
Bananymous 4cd99c71ca Kernel: kmalloc uses now spinlock and fix kmalloc_fixed() 2023-02-22 21:49:28 +02:00
Bananymous d9c05b7378 Kernel: rewrite the whole kmalloc (again) 
Performance of the old kmalloc implementation was terrible.
We now use fixed-width linked list allocations for sizes <= 60 bytes.
This is much faster than variable size allocation.

We don't use bitmap scanning anymore since it was probably the slow
part. Instead we use headers that tell allocations size and aligment.

I removed the kmalloc_eternal, even though it was very fast, there is
not really any need for it, since the only place it was used in was IDT.

These changes allowed my psf (font) parsing to go from ~500 ms to ~20 ms.
(coming soon :D)
 2023-02-22 16:32:50 +02:00
Bananymous 5d31e89574 Kernel: Update ErrorOr API and add path find to VFS 
These two are done on the same commit since Changes to Shell were
annoying to make work with only one change
 2023-02-22 01:23:11 +02:00
Bananymous 038379274e Kernel: Inode can now return full mode value 
Kernel::Inode::Mode is an union of bitmasked fields for every
possible bit
 2023-02-20 21:39:24 +02:00
Bananymous efaca469ee Kernel: Ext2Inode now supports indirect blocks through for_each_block() 2023-02-20 10:25:15 +02:00
Bananymous 80006ea137 Kernel: Initial work on filesystem 
We support now ext2 directory listing. File reading is not yet supported.
 2023-02-20 01:46:00 +02:00
Bananymous 0506fee34a Kernel: Shell's thread now uses sleep instead of polling 
Also added 'sleep' command that just sleeps for 5 seconds
 2023-02-19 18:52:25 +02:00
Bananymous 1bd8b0fe5c Kernel: Sleep now actually sleeps and allows idling 2023-02-19 18:52:25 +02:00
Bananymous 8f1b6da2af Kernel: Use Vector instead of raw poiters in Disk stuff 
We now don't have to manually free allocated data
 2023-02-16 20:48:41 +02:00
Bananymous 460fc3a29f Kernel: Start working on filesystem 
We have a basic PATA driver (for reading) and gpt parser.
 2023-02-16 20:00:31 +02:00
Bananymous 94cbacc998 Kernel: PIT now has very barebones sleep 2023-02-16 17:53:25 +02:00
Bananymous 1b45b4d728 Kernel: Remove unnecessary BOCKS_BREAK() 2023-02-16 17:52:39 +02:00
Bananymous 2161528cb6 Kernel: Shell is now launched as a capturing lambda 2023-02-02 23:27:51 +02:00
Bananymous cdbad56ed7 Kernel: Update shell thread command to run following command as thread 
'thread echo "Hello World"' runs the command 'echo "Hello World"' after
5 seconds have passed. This was just my test code for threading
 2023-02-02 23:26:19 +02:00
Bananymous 5b5e620d8a Kernel: Improve multithreading support 
We can now use arbitary BAN::function<void(...)> as the Thread.
I also implemented multithreading for i386 since it was not done
on the initial multithreading commit.
 2023-02-02 23:24:12 +02:00
Bananymous f6b05212e0 Kernel: Add is_locked() to spinlock 
I think this is atomic read
 2023-02-02 15:49:30 +02:00
Bananymous 9b8de5025a All: rename every function from UpperCamelCase to snake_case 
This was a mess since I didn't know which to use but now I decided
to go with snake_case :)
 2023-02-01 21:05:44 +02:00
Bananymous 6a9d60a8fb Kernel: Implement somewhat functioning multithread support 
This still uses only a single cpu, but we can now have 'parallelization'

This seems to work fine in qemu and bochs, but my own computer did not
like this when I last tried.

I have absolutely no idea how multithreading should actually be
implmemented and I just thought and implemented the most simple one I
could think of. This might not be in any way correct :D
 2023-02-01 01:53:35 +02:00
Bananymous 337569b0ca Kernel: Implement basic SpinLock 2023-02-01 01:52:52 +02:00
Bananymous be502ae616 Kernel: Debug stacktrace now detects if it kernel panics itself 2023-01-31 18:43:09 +02:00
Bananymous 6dc22b7251 Kernel: Add actual register values to x86_64 kernel panic 
Very hackish implementation, but we now get actual registers at the
time of the interrupt happening
 2023-01-30 18:52:38 +02:00
Bananymous bfe3426f6d Kernel: Add processor dump flag to APIC 2023-01-26 13:13:46 +02:00
Bananymous f0093ed2fd Kernel: kmalloc_eternal now updates the used/free values 
I also improved the kmalloc_dump_info() formatting. We format the
values as 8-digit hex numbers since (atleast for now) the kmalloc
will always be under 4 GiB address and size :)
 2023-01-26 03:04:19 +02:00
Bananymous e00d18029d Kernel: rewrite some of APIC since it didn't work with xsdts for some reason 2023-01-26 02:57:14 +02:00
Bananymous aa0757e135 Kernel: Move dump_stacktrace from panic -> debug 2023-01-26 02:57:14 +02:00
Bananymous e87026f01d Kernel: I have no idea what this commit does 
I had committed a change in IDT but reverted it now.

This propably only adds a spurious interrupt detection to common cpp
interrupt handler?
 2023-01-26 02:55:37 +02:00
Bananymous 9c31790359 Kernel: Add option to disable Serial output 
This makes all debug output to appear on the TTY
 2023-01-25 22:51:42 +02:00
Bananymous c0bc002ac6 Kernel: Move debug printing to its own file 
It didn't make sense that dprint was defined in Serial.h.
We also now dump dprint to tty if there is no serial and tty is initialized
 2023-01-25 22:51:42 +02:00
Bananymous 48348c9e57 Kernel: Cleanup APIC code. Remove unnecessary defines and add consts 2023-01-25 19:00:41 +02:00
Bananymous ba53582f23 Kernel: Rewrite APIC and PIC more OOP friendly 
x86_64 port is slowly coming together
 2023-01-23 20:13:57 +02:00
Bananymous 54043288cb Kernel: Move CPUID out of arch/ 
CPUID instructions behaves the same on x86 and x86_64. I am not
planning on supporting any non x86 based architectures.
 2023-01-23 18:12:52 +02:00
Bananymous 1b9f7aa815 Kernel: Rewrite the whole VESA driver 
We dont support vga text mode currently. I might add it later if needed.

I also removed mouse 'support' from Shell since it didn't do anything
and I didn't implement arbitary bitmap rendering to framebuffer
 2023-01-23 13:21:53 +02:00
Bananymous b67bbab083 Kernel: fix dump_stacktrace 2023-01-22 20:05:24 +02:00
Bananymous 026fdc251c Kernel: Add kmalloc_eternal back 2023-01-22 03:10:48 +02:00
Bananymous 6ec4ba3dc9 Kernel: Move dump_backtrace() out of arch. 
I discovered __builtin_frame_address()
 2023-01-22 03:00:13 +02:00
Bananymous 491610db2c Kernel: move GDT initialization to boot.S 2023-01-22 00:48:12 +02:00
Bananymous fdbc04f29d Kernel: kmalloc now uses the actual kernel end location 2023-01-21 22:40:23 +02:00
Bananymous 9088f7b305 Kernel: kmalloc prints addresses on panic 2023-01-21 22:29:44 +02:00
Bananymous 53a5ad3cf9 BAN: Function now properly forward arguments 2023-01-17 11:16:46 +02:00
Bananymous 7540fa0385 Kernel: Shell now 'properly' parses commandline 2023-01-16 20:09:22 +02:00
Bananymous 46e5b3f3d6 Kernel: Move GDT to its own namespace and cleanup 2023-01-16 15:24:10 +02:00
Bananymous b46fa0d116 Kernel: Shell can now dump kmalloc info 2023-01-16 15:17:00 +02:00
Bananymous 8881c1e117 Kernel: Shell is no longer singleton 2023-01-16 15:16:39 +02:00
Bananymous 1545850be3 Kernel: Input callbacks use the new BAN::Function 2023-01-16 15:15:02 +02:00
Bananymous 689338b506 Kernel: kmalloc can now dump current memory usage 2023-01-13 17:42:19 +02:00
Bananymous f547a788f2 Kernel: Add support for arrow keys in Shell 2023-01-13 15:07:24 +02:00
Bananymous bf4b26d1fd Kernel: kmalloc now returns nullptr if you try to allocate over kmalloc size 2023-01-13 15:04:06 +02:00
Bananymous 416a41745f Kernel: Kernel::Panic now checks that TTY is initialized instead of VESA 2023-01-13 15:04:06 +02:00
Bananymous af8d486893 Kenrel: TTY fix cursor position with ANSI escapes 2023-01-13 15:04:06 +02:00
Bananymous d0aa938b35 Kernel: remove unused function from kmalloc 2023-01-13 00:03:10 +02:00
Bananymous 61bd9da8e0 BAN: Add [[nodiscard]] to BAN functions returning ErrorOr 2023-01-12 23:57:07 +02:00
Bananymous 087d14fbb7 Kenrel: Remove unnecessary print from kmalloc_initialize() 2023-01-12 13:24:41 +02:00
Bananymous 3dfe062de1 Kernel: Cleanup TTY code 2023-01-12 13:24:41 +02:00
Bananymous 8fd51fb47d Kernel: Replace Paging{.h,.cpp} with better MMU{.h,.cpp} 2023-01-12 13:24:36 +02:00
Bananymous 64c57ea3d0 Kernel: Remove obsole CPUID::IsAvailable 
This is now a harware requirement that is verified already in boot.S
 2023-01-10 21:28:59 +02:00
Bananymous 7d45b3cbd6 Kernel: Rewrote kmalloc to be much simpler and allow alignment 2023-01-10 21:10:36 +02:00
Bananymous 6f9552d673 BAN: Add math to its own namespace 2023-01-10 19:11:27 +02:00
Bananymous c6467b8ebc Kernel: Multiboot data and kernel command lines are now global variables 2023-01-10 17:50:24 +02:00
Bananymous 979a5960e4 Kernel: We don't use floating point arithemtic anymore in kernel 2023-01-10 11:10:17 +02:00
Bananymous efd8638a96 Kernel: Improve kernel panic message and rename it 'panic'->'Panic' 2023-01-09 21:57:03 +02:00
Bananymous 086f0c7cf6 Kernel: Better error reporting from VESA and fix texmode rendering 2023-01-05 03:36:20 +02:00
Bananymous a12ddfa12a Kernel: Update PS/2 controller 2023-01-04 19:22:23 +02:00
Bananymous fcec793873 Kernel: Shell now renders a mouse 
PS/2 mouse doesn't seem to work with PIC.
 2022-12-30 20:48:15 +02:00
Bananymous ef0b2010e0 Kernel: Add basic PS/2 Mouse driver 2022-12-30 19:38:21 +02:00
Bananymous 3c92aa45fb Kernel: 'cpuinfo' command in shell now shows wheter you are running on 64-bit cpu 2022-12-28 19:46:37 +02:00
Bananymous 06a4ef1d87 Kernel: Commandline parsing does not depend on kmalloc anymore 2022-12-28 04:17:46 +02:00
Bananymous 5d7a767f8b Kernel: Enable basic paging 2022-12-28 04:17:34 +02:00
Bananymous 3e8590687f Kernel: Cleanup code and move kmalloc initialization to later 2022-12-28 04:16:21 +02:00
Bananymous 2a65c5fd0f Kernel: Shell now actually prints to its TTY 2022-12-27 20:11:49 +02:00
Bananymous fd4fdffd46 BAN::Formatter now takes putc like function as a parameter 
This allows us to use capturing lambdas as a putc like function
 2022-12-27 19:55:07 +02:00
Bananymous 98fc72b0d0 Kernel: kmalloc now aligns everything by alignof(max_align_t) 
kmalloc properly aligns everything now.

I also changed so that kmalloc addresses are stored as uintptr_t
instead of void* or uint8_t* for easier arithemetic and less casting
 2022-12-27 19:07:20 +02:00
Bananymous 620b836fc3 Kernel: VESA now somewhat handles Cursor in Graphics mode 2022-12-27 18:29:02 +02:00
Bananymous d8fd6afd12 Kernel: Make TTY a class 2022-12-23 15:55:45 +02:00
Bananymous 3f7a61a4d2 Kernel: VESA driver has now second buffer for fast scrolling 
This allows us to not read from video memory, since it was very slow

I also implemented fast path for graphics clearing and scrolling if bpp is 32
 2022-12-20 14:02:44 +02:00
Bananymous 5e2680cade Kernel: You can now disable APIC from the grub commandline 2022-12-20 11:57:09 +02:00
Bananymous 4c559f50a4 BAN: StringView::Split() now precomputes number of elements 
We dont have to resize vector on PushBack()'s if we reserve required size
 2022-12-20 11:37:28 +02:00
Bananymous 64a5a28ff0 Kernel: Add time since boot to Shell 2022-12-19 11:46:38 +02:00
Bananymous 0bdb01ee04 Kernel: Replace PIC with APIC 
If APIC/IOAPIC is not found, we fallback to PIC

Interrupts don't seem to work on real hardware (?)
 2022-12-19 11:46:25 +02:00
Bananymous 7efa5bfb75 Kernel: Shell backspace unicode detection cleanup 2022-12-16 11:53:59 +02:00
Bananymous f244728d33 Kernel: Add unicode support 2022-12-16 03:55:13 +02:00
Bananymous 9274c9ee2f Kernel: Abstract TTY to use new VESA 2022-12-15 19:05:07 +02:00
Bananymous 930661619b Kernel: Add more functionality to Shell 
commands 'time', 'cpuid', 'random'
 2022-12-15 17:29:35 +02:00
Bananymous 711ba19a82 Kernel: Add basic Shell to test functionality 2022-12-13 21:34:50 +02:00
Bananymous f8224e55b1 Kernel: Force strlen compilation so BAN can use it 2022-12-13 21:33:54 +02:00
Bananymous 174daa3e02 Kernel: Keyboard event callback can now be registered later 2022-12-13 16:15:10 +02:00
Bananymous 171a33bbcd Kernel/BAN: Add weekday to Time structure and get it with RTC 2022-12-13 14:37:10 +02:00
Bananymous 52c793bb5c Kernel/BAN: Make Time a struct in BAN and add formatter to it 2022-12-13 12:37:26 +02:00
Bananymous 334abe6b27 Kernel: lol 2022-12-13 12:12:15 +02:00
Bananymous 68e88d9413 Kernel: Add clear() command public TTY API 2022-12-13 10:45:24 +02:00
Bananymous e62a626b39 Kernel: Improve keyboard input by a lot 
Seems to work on my 2 computerss
 2022-12-13 10:45:06 +02:00
Bananymous 7ebe727a29 Kernel: Add RTC to get current time 2022-12-13 10:41:36 +02:00
Bananymous 79a2bccd21 Kernel: kfree now checks for nullptr 2022-12-13 00:53:19 +02:00
Bananymous ddc28a8c0e Kernel: Rename Printer to Formatter 2022-12-13 00:50:21 +02:00
Bananymous 03e7812cae Kernel: Add basic ANSI support :) 2022-12-10 03:53:44 +02:00
Bananymous 862b32d735 Kernel: Improve kmalloc error messages 2022-12-10 01:08:01 +02:00
Bananymous 3d3f12bd30 Kernel: Add new generic Printer class 
kprint is now just a #define to Printer::print<terminal_putc>.

This allows us to use same print formatting for serial output :)
 2022-12-10 00:57:09 +02:00
Bananymous 26f1ebe26f Kernel: Implement very basic, but functional kmalloc/kfree 2022-12-09 00:26:24 +02:00
Bananymous 817de9f359 Kernel: Properly handle finnish keyboard layout. 
You can now type any basic ascii character from keyboard.
Multimedia keys are not yet handled.
 2022-12-08 18:05:48 +02:00
Bananymous e998615253 Kernel: Move GDT and IDT files to architecture specific folder 2022-12-08 17:50:04 +02:00
Bananymous b7a600c86d Kernel: Keyboard is now handeled "properly" 2022-12-07 04:35:38 +02:00
Bananymous 4202c999fa Kernel: IRQs are now working :) 2022-12-07 02:48:44 +02:00
Bananymous c292ef5471 Improve IDT Kernel panic 2022-11-16 20:28:07 +02:00
Bananymous 20f7c18988 kmalloc does not zero initialize kernel memory 2022-11-16 19:51:45 +02:00
Bananymous f2b45ba212 Add GDT and IDT 2022-11-16 19:49:09 +02:00
Bananymous b500a8a7ed kmalloc 2022-11-16 19:48:36 +02:00
Bananymous 550ecbc951 Kernel panic uses kprint with parameters 2022-11-16 19:47:19 +02:00
Bananymous 123382eace Fixes :) 2022-11-15 21:42:14 +02:00
Bananymous d289916bc0 Changed back to lower half kernel, since im dump. 
I dont see the benefit of higher half (and could not get multiboot info)
 2022-11-15 00:38:33 +02:00
Bananymous 9e933a5ec5 Add kernel panic function 2022-11-14 18:53:00 +02:00
Bananymous b185ed4fd3 Libc is now written in C++ 2022-11-14 00:31:24 +02:00
Bananymous fd13f74bbf Changed into higher half kernel 
https://wiki.osdev.org/Higher_Half_x86_Bare_Bones
 2022-11-13 02:03:20 +02:00
Bananymous db656fe469 Implement Stack Smashing Protection 2022-11-12 23:46:33 +02:00
Bananymous 61609db228 Kernel is now in C++ :) 2022-11-12 21:30:26 +02:00
Bananymous e6b4866ab0 Initial commit. We have a booting kernel 2022-11-12 21:04:47 +02:00