Commit Graph

141 Commits

Author SHA1 Message Date
Bananymous b8622f2b4b Kernel: Implement simple RTL8169 driver
This allows me to use internet when running banan-os on my hardware!
2024-09-19 22:58:03 +03:00
Bananymous a084f83f4c Kernel: Rework kernel-side ELF loading
ELFs are now loaded as MemoryRegions so they don't need special handling
anywhere. This also allows file backed COW optimizations to work. This
was not the case before.

This patch removes now obsolete LoadableELF and unused ELF files from
LibElf.
2024-09-15 23:57:34 +03:00
Bananymous f30947336a BuildSystem: Cleanup cmake files 2024-09-05 12:52:25 +03:00
Bananymous 827eec6af0 Kernel: Make .rodata read-only and add -orphan-handling=error
I don't really know why .rodata was marked writable :D
2024-08-30 15:33:02 +03:00
Bananymous 23194d1f53 Kernel: Implement basic random device to /dev/random 2024-08-22 14:02:26 +03:00
Bananymous 8902032b42 BuildSystem: Cleanup kernel cmake file 2024-08-18 20:44:12 +03:00
Bananymous d9b3a4bf77 Kernel: Add more conversions for AML Integer, Register, String 2024-08-15 20:51:04 +03:00
Bananymous 3f5ee6f414 Kernel: Rewrite the AML conversion API
This doesn't currently make the interpreter any better, but it will make
further implementation easier to be spec (or hardware...) compliant
2024-08-15 02:25:45 +03:00
Bananymous ec4cfdee23 Kernel: Fix and cleanup a lot of AML code
Node now have APIs to convert them to buffer, integer and string. This
allows possibility to handle methods that need explicitly use one of the
overloads instead of integer.

This patch also adds handling of DebugOp. This is used quite heavily in
uACPIs test suite.
2024-08-13 22:42:37 +03:00
Bananymous a5a097fa4a Kernel/LibC: Add initial pseudo terminal support
This patch implements posix_openpt() and ptsname()

grantpt() and unlockpt() are left in LibC as stubs, as posix_openpt
currently does all of the needed work.
2024-08-11 01:02:59 +03:00
Bananymous 2a659a9d03 BuildSystem: Fix enable sse definition
__enable_sse was never actually defined for any targets. This also adds
__arch definition for libc (so `utsname` works).
2024-08-09 15:52:42 +03:00
Bananymous f8261c60c0 Kernel: Rewrite the whole scheduler and re-architecture SMP handling
Change Semaphore -> ThreadBlocker
  This was not a semaphore, I just named it one because I didn't know
  what semaphore was. I have meant to change this sooner, but it was in
  no way urgent :D

Implement SMP events. Processors can now be sent SMP events through
IPIs. SMP events can be sent either to a single processor or broadcasted
to every processor.

PageTable::{map_page,map_range,unmap_page,unmap_range}() now send SMP
event to invalidate TLB caches for the changed pages.

Scheduler no longer uses a global run queue. Each processor has its own
scheduler that keeps track of the load on the processor. Once every
second schedulers do load balancing. Schedulers have no access to other
processors' schedulers, they just see approximate loads. If scheduler
decides that it has too much load, it will send a thread to another
processor through a SMP event.

Schedulers are currently run using the timer interrupt on BSB. This
should be not the case, and each processor should use its LAPIC timer
for interrupts. There is no reason to broadcast SMP event to all
processors when BSB gets timer interrupt.

Old scheduler only achieved 20% idle load on qemu. That was probably a
very inefficient implementation. This new scheduler seems to average
around 1% idle load. This is much closer to what I would expect. On my
own laptop idle load seems to be only around 0.5% on each processor.
2024-07-22 00:33:50 +03:00
Bananymous baa4e6475a Kernel: Implement basic USB Mouse
This has the same problem I described in previous commit for keyboard
2024-07-14 02:11:32 +03:00
Bananymous ac5c77ee2c Kernel: Implement USB Keyboard
This is kinda hacky, as I had disable the PS/2 initialization so that
usb keyboard gets /dev/keyboard0. I should add device hot plugging
support for TTY and GUI...
2024-07-14 02:09:18 +03:00
Bananymous 1efc6a1385 Kernel: Implement simple USB HID driver
This should be easily expandable to add HID devices
2024-07-14 02:04:48 +03:00
Bananymous a97a574718 Kernel: Rewrite the whole input system
PS/2 code is now kind of messed up, but it works. Keyboards and mice are
now an abstract class that is automatically exposed to userspace. This
will make adding USB input much nicer.
2024-07-14 01:53:50 +03:00
Bananymous 14dce1abac Kernel: Start work on USB stack
Current code can enumerate all xHCI devices and detect their type based
on the class code on device or interface descriptors.
2024-07-10 12:06:00 +03:00
Bananymous 9e1b5cbaab BuildSystem: Cleanup CMake code to allow libc only installation
There was no way to just install libc which is required for stdlibc++
2024-06-21 01:45:14 +03:00
Bananymous ad6d95ba52 BuildSystem: Rework the whole cmake build system
Now files are installed using the install() command instead of manually
copying files to their destinations. This allows automatic recompilation
of headers that did not work previously
2024-06-19 09:40:03 +03:00
Bananymous 318ce5dec8 All: Fix a lot of compiler warnings from header files
While reworking build system, header files started to report warnings.
2024-06-18 23:02:10 +03:00
Bananymous c69919738b BuildSystem: Move all userpace libraries under the userspace directory
As the number of libraries is increasing, root directory starts to
expand. This adds better organization for libraries
2024-06-18 13:14:35 +03:00
Bananymous ea7fc7f6c4 Kernel: Implement read-only FAT12/16/32 driver with long name support
You can now mount FAT filesystems! This code might not work perfectly
but my quick testing seemed to work on all (FAT12/16/32) variants.
2024-06-14 01:04:12 +03:00
Bananymous 766439db6d Kernel: Start work on adding support for new filesystems
Old code tried to create ext2 filesystem from all devices.
2024-06-11 10:50:26 +03:00
Bananymous ffacff67cf LibFont: Move PSF code to separate file 2024-06-10 16:10:05 +03:00
Bananymous 0501f3bd99 Kernel: Move font code to its own library LibFont 2024-05-31 10:47:05 +03:00
Bananymous d4d530e6c8 Kernel: Implement basic shared memory objects
These can allocate memory that can be shared between processes using
a global key. There is currenly no safety checks meaning anyone can
map any shared memory object just by trying to map every possible key.
2024-05-29 15:58:46 +03:00
Bananymous 8bc6c2eb20 Kernel: Move KeyEvent/MouseEvent from kernel to LibInput 2024-05-28 23:30:08 +03:00
Bananymous 06f4b0b29a BAN: Make String and StringView header only
This allows linking with libc without having to link ban
2024-05-23 15:43:26 +03:00
Bananymous 693f90449f Kernel: Rework AML package and implement indexing in to packages 2024-04-19 11:26:48 +03:00
Bananymous 89c4abc07a Kernel: Cleanup AML device initialization
_STA and _INI are now properly called on call devices
2024-04-12 02:00:30 +03:00
Bananymous 0184e5beb5 Kernel: AML tries to initialize processors when entering ACPI mode
I had forgotten that Processors used to be a different definition
in AML.

I also implemented reads/writes for FieldElement/IndexFieldElement
that fit in 64 bits. Reads and writes to buffer are still a TODO.
2024-04-11 01:48:46 +03:00
Bananymous cdbdc1a822 Kernel: Remove lai as a dependecy
I don't think lai is needed anymore, since my own AML interpreter
can do ACPI poweroff which was all that lai was used for.
2024-04-10 04:39:48 +03:00
Bananymous b16e65168f Kernel: Rewrite whole AML parser
Now AML parsing is actually done while respecting namespaces and
scopes. I implemented the minimal functionality to parse qemu's AML.

Next step is to implement AML interpreting and then we can drop lai
as a dependency.
2024-04-09 01:16:07 +03:00
Bananymous e7ef7a9e55 Kernel: Implement barebones AML parser
This implements only parsing for AML in qemu. InvokeMethods are not
parsed since number of arguments to Methods is not yet known.

Parsing AML uses multiple kilobytes of stack space, so I increased
boot stack size by a lot :D

I am not sure where my own AML is going, but this is good start if
I decide to implement full ACPI on my own.

This code is very much just ugly macro expansion.

Qemu has 2 DefPackage elements that I am not able to parse. Package
data ends while there should be still multiple elements.
2024-04-07 17:03:30 +03:00
Bananymous e0011d22f2 Kernel: Move ACPI to its own directory and namespace 2024-04-04 15:00:13 +03:00
Bananymous 1943c3e7a1 Kernel: Unify IDT and GDT code between x86_64 and x86_32
The code is pretty much the same, so there are just couple macros
differiating initialization.
2024-03-26 16:42:02 +02:00
Bananymous 99e30a4d7d Kernel: Replace i386 with i686
I don't really want to be working with i386 since it doesn't support
compare exchange instruction
2024-03-26 02:48:26 +02:00
Bananymous 097d9a6479 Kernel: Implement dummy IDT and GDT for i386 2024-03-26 00:10:42 +02:00
Bananymous 26585bb1d9 Kernel: Implement signal trampoline for i386 2024-03-22 15:41:15 +02:00
Bananymous 0d92719433 Kernel: Remove old i386 spinlock code 2024-03-22 15:41:15 +02:00
Bananymous 1ab2722850 Kernel: Add PageTable stub to progress linking 2024-03-22 15:41:15 +02:00
Bananymous 0424082e7b Kernel: Only compile lai for x86_64 targets
I will be dropping lai entirely soon. Once I get to writing AML
interpreter.
2024-03-22 15:41:15 +02:00
Bananymous 45cea14165 Kernel: Move sys_fork trampolines to kernel/arch/ directory 2024-03-22 12:48:54 +02:00
Bananymous 26ed689d30 Kernel: Remove old GDT, IDT and MMU code from i386
It will be easier to just rewrite them
2024-03-22 12:47:34 +02:00
Bananymous f0105cb7fb Kernel: Move Interruptable from InterruptController.h to its own file 2024-03-06 00:47:02 +02:00
Bananymous 418bc54f2b Kernel: Move SpinLock definition to header and fix Scheduler locking
This patch allows inlining of spinlocks :)
2024-03-04 22:36:41 +02:00
Bananymous 9c36d7c338 BAN/Kernel: Rework assertion/panic system
BAN/Assert.h does not need any includes meaning it can be included
anywhere without problems.
2024-03-04 11:41:54 +02:00
Bananymous 8141b9977d Kernel: Per processor information is now stored in class Processor
This allows us to allocate processor stacks, and other per processor
structures dynamically in runtime. Giving processor stack to
ap_trampoline feels super hacky, but it works for now.
2024-03-03 22:30:06 +02:00
Bananymous d94f6388b7 Kernel: Fix all broken locks from new mutexes 2024-02-28 22:45:34 +02:00
Bananymous 198dde8365 Kernel: Add klibc for kernel
Now building same source as libc is not needed and libc doesn't
have to do hacks to allow kernel compilation
2024-02-14 15:00:04 +02:00