Commit Graph

541 Commits

Author SHA1 Message Date
Bananymous 8940ff8002 Kernel: You don't have to check whether VFS is initialized or not
VFS now returns Error when attempting to traverse inodes if it did
not find root partition
2023-03-09 02:31:24 +02:00
Bananymous fc58baf54d Kernel: if VFS initialization does not find root, we fail 2023-03-09 02:17:42 +02:00
Bananymous 2e6e0d0ef5 Kernel: FIX ubsan complaining about unaligned addresses for STDHeaders 2023-03-08 22:55:44 +02:00
Bananymous 371dfe8ef3 BAN: Formatter now uses perfect forwarding on its arguments 2023-03-08 21:31:26 +02:00
Bananymous 7458f68c38 BAN: Error can now be constructed from c_string or format string
If the resulting string would overflow, we just truncate it to fit
the error message buffer (128) bytes
2023-03-08 17:05:37 +02:00
Bananymous d90aba0963 Kernel: Create CriticalScope and fix kmalloc
This disables interrupts for the current scope and restores them
after the scope. This is used in kmalloc, since scheduler might
call into kmalloc/kfree, but deadlock if some thread is currently
trying to allocate. This allows us to use kmalloc in Scheduler.
2023-03-08 13:55:53 +02:00
Bananymous a068d828fe Kernel: ATA reads go through the ata controller and not only device 2023-03-08 03:26:25 +02:00
Bananymous 1dabe7a222 Kernel: More rework on Scheduler 2023-03-08 03:26:25 +02:00
Bananymous e7a577f54a Kernel: fix includes 2023-03-08 03:26:25 +02:00
Bananymous 23b3028e15 Kernel: Rename RefCounted -> RefPtr and implement RefCounted 2023-03-08 03:26:25 +02:00
Bananymous f7ebda3bf1 Kernel: Move interrupt related functions to InterruptController 2023-03-08 03:16:51 +02:00
Bananymous b5673278c4 Kernel: Disable color after Debug::dump_stack_trace 2023-03-08 02:41:44 +02:00
Bananymous 0b62729887 Kernel: Scheduler sleeping is working
We have to disable optimization for one function, but I'm working
on a fix
2023-03-08 02:41:44 +02:00
Bananymous b8ee77eb78 Kernel: Initial work on new scheduler with queues
Sleeping is definately broken
2023-03-08 02:41:44 +02:00
Bananymous a9acf1f6dc Kernel: PCIDevice is now class with getters and constructor 2023-03-08 02:41:44 +02:00
Bananymous 42c33ebfb3 Kernel: kmalloc aligns size to s_kmalloc_min_align
We don't get unaligned memory anymore from kmalloc
2023-03-08 02:41:44 +02:00
Bananymous ed18d86f08 Kernel: Fix spinlock unlocking in x86_64
Spinlock unlock used a 64 bit write on 32 bit integer, overwriting
some random memory. This caused some really hard to find bugs
2023-03-08 02:41:44 +02:00
Bananymous df8811fc1a Kernel: Remove "a" from .section .text 2023-03-07 01:57:09 +02:00
Bananymous 8a52c0f9d7 Kernel: Cleanup RSDP parsing code 2023-03-07 00:41:13 +02:00
Bananymous 06db890d49 Kernel: Add ubsan
My brain has been melting since I'm getting very random bugs.
I hope I can debug them better with ubsan :)
2023-03-06 23:38:05 +02:00
Bananymous d5f302a68b Kernel: kmalloc now uses two locks
One for fixed allocations and one for general allocations
2023-03-06 12:40:35 +02:00
Bananymous f1f5e76636 Kernel: kmalloc requires alignment to be power of two 2023-03-02 22:31:13 +02:00
Bananymous 52aa98ba25 Kernel+LibC: Add some errno codes
Kernel now returns ENOMEM and other errnos, so we dont have to write
error messages
2023-03-02 21:10:44 +02:00
Bananymous 90a7268e5a BAN: Rewrite RefCounted to return ErrorOr 2023-03-02 12:30:11 +02:00
Bananymous 1dd61e93b6 Kernel: Threads cannot take arguments anymore 2023-03-02 01:56:09 +02:00
Bananymous 4d8bdec16d Kernel: fix i386 MMU 2023-03-02 00:47:29 +02:00
Bananymous 7fcbb869e1 Kernel: Initialize GDT in kernel code
We dont use the boot GDT only while booting
2023-03-01 21:21:56 +02:00
Bananymous 7f8cad83b1 Kernel: x86_64 boot script now makes GDT with null, kernel code and data 2023-03-01 21:21:56 +02:00
Bananymous ba8c4dbc7f Kernel: panic now disables interrupts as the first thing 2023-03-01 21:21:56 +02:00
Bananymous 9756de02ef Kernel: MMU now takes flags when allocating pages 2023-03-01 21:21:56 +02:00
Bananymous 7d84f290a1 Kernel: Add lock to Disk reads before I forget 2023-02-26 03:48:11 +02:00
Bananymous ee5d02aa70 Kernel: Rewrite basically all current disk io stuff
This is a big commit that was kinda hard to split to smaller ones.

Essentially we now look at all the mass storage devices from PCI
and initialize (P)ATA devices. This doesn't provide any more functionality
but better abstractions and everything doesn't have to be on its old
default port that might be different for modern computers.
2023-02-26 03:00:29 +02:00
Bananymous 40cf68a22a Kernel: Shell now sleeps through Scheduler and doesn't 'hlt'
ls doesn't crash when trying to list file
2023-02-26 02:57:27 +02:00
Bananymous 04bb08d27f Kernel: Add basic PCI enumeration 2023-02-26 02:56:53 +02:00
Bananymous 34f9912a1d Kernel: Add IO functions inl, outl, and ins{b,w,l} to read into buffer 2023-02-24 12:39:38 +02:00
Bananymous 80f9428337 Kernel: Fix prefs font for 32 bit 2023-02-24 03:19:54 +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 c9ea22f5e2 Kernel: IDT now confirms that it allocated succesfully 2023-02-22 21:48:40 +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 247f03c79e BAN: Make ErrorOr<> have attribute [[nodiscard]]
We don't have to specify it everytime we make function return ErrorOr
2023-02-19 20:10:30 +02:00
Bananymous feaeee11e5 Kernel: fix ARCH() macro and add helper macros for push/pop 2023-02-19 18:52:25 +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 6a133782ed All: Move to c++20 2023-02-09 23:05:26 +02:00
Bananymous fb7fe73d49 Kernel: Add inw and outw to IO 2023-02-04 23:37:34 +02:00
Bananymous 6fab26692b Kernel: remove unnecessary function from x86_64 Thread.S 2023-02-02 23:48:18 +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 777ede328e Kernel: Add helper functions for reading current rsp and rbp 2023-02-02 23:19:44 +02:00
Bananymous c85b97abee Kernel: fix some of i368 IDT. This was really broken 2023-02-02 15:52:06 +02:00
Bananymous 117d1de038 Kernel: panic does not need to include <kernel/kprint.h>
This allows us to not have kprint available literally everywhere
2023-02-02 15:51:15 +02:00
Bananymous 6cbad718fb Kernel: Add some more cxxabi functionality
We can now declate static variables in functions
2023-02-02 15:50:26 +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 01f267a321 Kernel: fix spinlock for i386 2023-02-02 15:49:00 +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 7d8aafa0b5 Kernel: Add macros for current archutecture 2023-02-01 01:52:52 +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 cb3b62d665 Kernel: Only allocate single GDT entry during boot.S
When we need more, we should probably initialize rest of them
in cpp code
2023-01-31 18:43:09 +02:00
Bananymous 1954f223ad Kernel: Add no sse and sse2 for kernel code 2023-01-31 18:43:09 +02:00
Bananymous 1687028ed5 Kernel: Add constructor and destructor to MMU 2023-01-30 18:54:04 +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 6418d7cfc3 Kernel: Add Other GDT entries to x86_64 2023-01-26 12:53:04 +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 35d2e27292 Kernel: Improve MMU
We don't have to invalidate page in AllocatePage() if we don't make
any changes. We also should not assert on deallocating non-present
pages, just return early :)
2023-01-26 02:57:14 +02:00
Bananymous 589f338357 Kernel: Cleanup IDT register dump inline assembly 2023-01-26 02:57:14 +02:00
Bananymous 05b48fa71c Kernel: add gcc option to make sure we have (r/e)bp saved on stack 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 b315fdc27f Kernel: Finally managed to get 64-bit working
I had weird problems with interrupts but everything should work now
2023-01-25 19:19:28 +02:00
Bananymous c4670f49d4 Kernel: Refactor some IDT code 2023-01-25 19:19:28 +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 b50bb03ed4 Kernel: Panic now halts machine even if we get spurious irqs 2023-01-23 18:25:48 +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 10c7ef7baa Kernel: MMU rename weird variable 2023-01-22 20:16:44 +02:00
Bananymous b67bbab083 Kernel: fix dump_stacktrace 2023-01-22 20:05:24 +02:00
Bananymous 62469c529f Kernel: IDT now allocates descriptors with kmalloc_eternal 2023-01-22 03:18:42 +02:00
Bananymous 026fdc251c Kernel: Add kmalloc_eternal back 2023-01-22 03:10:48 +02:00
Bananymous cdd27ae3db Kernel: rename MMU::m_page_directory_pointer_table -> m_highest_paging_stuct
This might not always be pdpt. In x86_64 it is pml4/pml5
2023-01-22 03:03:58 +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 fbfb3d6b70 Kernel: IDT cleanup GateDesctiptor usage
And move everything to IDT namespace
2023-01-22 02:06:43 +02:00
Bananymous 558374a47c Kernel: IDT flush only once in initialization 2023-01-22 02:06:43 +02:00
Bananymous 6e24ef8323 Kernel: IDT cleanup Kernel panic messages 2023-01-22 02:06:43 +02:00
Bananymous 3e8fbbaabd Kernel: Fix small typos in IDT 2023-01-22 01:12:47 +02:00
Bananymous 491610db2c Kernel: move GDT initialization to boot.S 2023-01-22 00:48:12 +02:00
Bananymous aac7595a47 Kernel: cleanup boot.S code and enable SSE 2023-01-21 23:44:23 +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 b5453fad5c Kernel: dump_stacktrace uses now "\r\n" line endings for bochs 2023-01-21 22:21:38 +02:00
Bananymous bb051604a1 Kernel: Move dump_stacktrace() to arch folder
It uses mov instruction which has different register on x86/x86-64
2023-01-21 22:16:31 +02:00
Bananymous 9e092c80c0 Kernel: Cleanup boot.S 2023-01-21 22:16:01 +02:00
Bananymous 53a5ad3cf9 BAN: Function now properly forward arguments 2023-01-17 11:16:46 +02:00
Bananymous b9a4530e54 Kernel: Kernel::Panic now dumps stacktrace to com1 2023-01-16 21:50:50 +02:00
Bananymous 7540fa0385 Kernel: Shell now 'properly' parses commandline 2023-01-16 20:09:22 +02:00
Bananymous e307db47eb Kernel: Kernel::Panic() will now always print to serial output 2023-01-16 15:44:27 +02:00
Bananymous 73abc3b2ee fixup! Kernel: Move GDT to its own namespace and cleanup 2023-01-16 15:24:59 +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 d5e162b1ea Kernel: fix kmalloc header 2023-01-16 12:10:50 +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 32453daf66 Kernel: actually dont map page 0 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 77e82de51e Kernel: Make IDT exceptions use a single Kernel:Panic
This allows IDT to print exceptions even when we dont have TTY
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 75ee592fb5 Kernel: remove debug print from MMU 2023-01-13 00:04:50 +02:00
Bananymous 6b73547989 All: edit gcc flags 2023-01-13 00:04:15 +02:00
Bananymous 7f01eaa936 Kernel: Move CPUID feature strings to cpp file 2023-01-13 00:03:37 +02:00
Bananymous d0aa938b35 Kernel: remove unused function from kmalloc 2023-01-13 00:03:10 +02:00
Bananymous 4c7950cd3e Kernel: remove unused function from IDT 2023-01-13 00:02:39 +02:00
Bananymous 61bd9da8e0 BAN: Add [[nodiscard]] to BAN functions returning ErrorOr 2023-01-12 23:57:07 +02:00
Bananymous 4ae4ad528a Kernel: APIC use dprintln instead of kprintln
VESA drivers will be initialized much later now so kprintln
will not be available when initializing APIC
2023-01-12 13:52:22 +02:00
Bananymous f412c164b3 Kernel: Rename ACPI debug print macro 2023-01-12 13:48:05 +02:00
Bananymous 5493d1bae1 Kernel: Add debug print to MMU and fix comment 2023-01-12 13:46:02 +02:00
Bananymous 301ad89783 Kernel: Unallocate RSDT after we are done with it 2023-01-12 13:45:01 +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 33a4fcc662 Kernel: Add helper macro for bochs magic break point 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 d89b6aa9ce Kernel: Serial output now gives clickable links 2023-01-10 21:09:59 +02:00
Bananymous 6f9552d673 BAN: Add math to its own namespace 2023-01-10 19:11:27 +02:00
Bananymous 181478119e Kernel: Paging is now enabled by boot.S 2023-01-10 17:53:29 +02:00
Bananymous 85068e27d6 BAN: BAN/Memory.h now provides the operator new and delete 2023-01-10 17:51:33 +02:00
Bananymous c6467b8ebc Kernel: Multiboot data and kernel command lines are now global variables 2023-01-10 17:50:24 +02:00
Bananymous 5106552bfd Kernel: Serial output uses now "\r\n" as line endings 2023-01-10 11:24:30 +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 531f470132 Kernel: Add helper to map pages with base address and size
This allows us to easily map enough pages for buffer with known size

VESA driver can now allocate enough memory for whole framebuffer if it
doesn't fit in a single page (1920x1080 for example)
2023-01-05 03:44:41 +02:00
Bananymous 086f0c7cf6 Kernel: Better error reporting from VESA and fix texmode rendering 2023-01-05 03:36:20 +02:00
Bananymous d6623def32 Kernel: Paging uses now PAE with 2 MiB pages 2023-01-05 02:00:18 +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 9d9a6b2fec Kernel: VESA can now print 8x16 bitmaps 2022-12-30 20:47:25 +02:00
Bananymous f51ca4b642 Kernel: Rewrite IDT exception kernel panic message 2022-12-30 20:03:09 +02:00
Bananymous fc05642b74 Kernel: Make Render from buffer public tty function 2022-12-30 19:57:44 +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 267367333e Kernel: Move paging code to a helper 2022-12-28 19:01:01 +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 9169020ad2 Kernel: Remove unnecessary checks from GraphicsPutCharAt() 2022-12-27 18:29:51 +02:00
Bananymous 620b836fc3 Kernel: VESA now somewhat handles Cursor in Graphics mode 2022-12-27 18:29:02 +02:00
Bananymous 2d46281c16 Kernel: TTY scroll is now done using memmove
This will be faster when memory functions will be optimized
2022-12-27 17:45:47 +02:00
Bananymous 5ae1fc58e9 Kernel: Clean code in tty and vesa 2022-12-27 17:22:45 +02:00
Bananymous 2535eb1c4c Kernel: TTY now handles keeping terminal buffer
VESA Driver cannot scroll anymore, this is handled by tty
2022-12-27 17:06:33 +02:00
Bananymous f7eb85babd Kernel: IDT exceptions print better errors now 2022-12-23 15:56:10 +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 c82caacbaa Kernel: Cleanup APIC code
APIC seems to work on my main machine, but not on other one
2022-12-20 04:45:46 +02:00
Bananymous 64a5a28ff0 Kernel: Add time since boot to Shell 2022-12-19 11:46:38 +02:00
Bananymous c8866aa88b Kernel: Move GDT and IDT assembly to inline assembly 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 6fe0d04f07 Kernel: Implement basic VESA Graphics mode driver
We now support VESA Graphics mode with some bitmap fonts
2022-12-16 00:47:03 +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 a2d38af37a Kernel: Implement 'cpuid' and enumerations for features 2022-12-15 17:28:54 +02:00
Bananymous 7bddcafadd Kernel: Remove a lot of empty lines 2022-12-14 21:17:46 +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 ced05ff5f2 BAN: use only memcmp when comparing string(view) with const char* 2022-12-13 21:32:51 +02:00
Bananymous 833a82c8d1 Kernel: Fix keymay brace/bracket to correct way around 2022-12-13 21:10:25 +02:00
Bananymous fd6e0ed0f7 Kernel: debug printing now show system time correctly 2022-12-13 20:44:52 +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 835430e7b0 BAN: Move Formatter to new project called BAN
I also implemented basic ErrorOr and Queue
2022-12-13 10:39:57 +02:00
Bananymous 1283e74ee6 Kernel: Formatter now supports fill to length 2022-12-13 01:16:49 +02:00
Bananymous 2938c85c1a Kernel: Makefile formatting 2022-12-13 00:59:53 +02:00
Bananymous f6def7a747 Kernel: initialize every irq handler to nullptr 2022-12-13 00:57:48 +02:00
Bananymous 9c72f7255a Kernel: Add red colors to kernel panics 2022-12-13 00:57:13 +02:00
Bananymous 5f75479861 Kernel: zero initialize VGA_MEMORY and fix colors 2022-12-13 00:56:30 +02:00
Bananymous 79a2bccd21 Kernel: kfree now checks for nullptr 2022-12-13 00:53:19 +02:00
Bananymous 5494d8d2ac Kernel: We can now use destructors in global objects 2022-12-13 00:52:32 +02:00
Bananymous ddc28a8c0e Kernel: Rename Printer to Formatter 2022-12-13 00:50:21 +02:00
Bananymous e1a15a4989 Kernel: Add video mode request for bootloader 2022-12-10 03:55:24 +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 ef56f9a239 Kernel: Add floating point printing to kprint 2022-12-09 00:22:47 +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 5ba7af2cf6 TTY: Treat tabs as spaces 2022-12-08 17:50:44 +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 998184e288 Kernel: TTY now handles '\b' 2022-12-07 04:35:02 +02:00
Bananymous 4202c999fa Kernel: IRQs are now working :) 2022-12-07 02:48:44 +02:00
Bananymous 343dda629c Kernel panic now halts the system 2022-12-03 18:19:07 +02:00
Bananymous c17f61611e Improve buildsystem by making build directory
We now create build directory for kernel and libc so that source
directories are kept more clean.
2022-12-03 18:17:37 +02:00
Bananymous c292ef5471 Improve IDT Kernel panic 2022-11-16 20:28:07 +02:00
Bananymous 4ebd0e5c36 Fix negative number printing in kprint 2022-11-16 20:27:22 +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 7c06c75d6c Move cursor in terminal when writing to it 2022-11-15 09:26:14 +02:00
Bananymous 3bc4d7d39b Rename .s extensions to .S 2022-11-15 09:25:18 +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