72e798cedb
kernel: Do not automatically read the MBR partition table from /dev/cdrom
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Since ff952cfe16
2023-06-16 21:10:33 +02:00
7593947c33
kernel/ATA: Route interrupts to the correct drive
2023-06-16 21:10:33 +02:00
93922932fa
kernel: Start reading the MBR partition table from the ATAPI drive
2023-06-16 21:10:33 +02:00
a3beaa4d53
ATA: Mark the CDROM as a block device
2023-06-16 21:10:33 +02:00
bb0db450b3
kernel/ATA: Pass extra information to DeviceRegistry
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This is needed since merging e7d482e
2023-06-16 21:10:33 +02:00
a0fa1f2cfd
kernel+init: Create a device node in /dev to access the CDROM from userspace!
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Still using PIO, though.
2023-06-16 21:10:33 +02:00
2fa11a5ae3
kernel/ATA: Read the CDROM's first sector using ATAPI PIO!!
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Sadly, for some reason, DMA is not working right now.
This is a problem, as PIO is inconvenient. But hey, it works for now!
2023-06-16 21:10:32 +02:00
cc8450751c
kernel/x86_64: Implement writing to PCI fields
2023-06-16 21:10:32 +02:00
3762d3f959
kernel/PCI: Add bit enum for the Command field
2023-06-16 21:10:32 +02:00
a99c5e325d
kernel: Actually register interrupt handlers properly
2023-06-16 21:10:32 +02:00
82db0e39ea
kernel/ATA: Calculate block sizes for ATA devices as well
2023-06-16 21:10:32 +02:00
46c45068e0
kernel/ATA: Send a READ CAPACITY packet to an ATA drive on initialization
2023-06-16 21:10:32 +02:00
cfcde5af55
kernel/ATA: Read the PCI Busmaster registers and start preparing for DMA
2023-06-16 21:10:31 +02:00
268252c89e
kernel/ATA: Read the Busmaster base port and verify it
2023-06-16 21:10:31 +02:00
5d16754632
kernel: Handle device BARs properly
2023-06-16 21:10:31 +02:00
6307b01689
kernel/ATA: Read ATA strings properly instead of backwards
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Now we can see the model string. What does it say...
"QEMU DVD-ROM". Let's go!
2023-06-16 21:10:31 +02:00
e118c9ea0d
kernel/ATA: Implement enough to send an IDENTIFY command and read the model number :)
2023-06-16 21:10:31 +02:00
ee691bbb0f
kernel/ATA: Handle drive IRQs in compatibility mode
2023-06-16 21:10:31 +02:00
739950e8f0
kernel/CPU: Allow passing arbitrary data to interrupt handlers
2023-06-16 21:10:31 +02:00
3a84127fd6
kernel/ATA: Start reading/writing registers and detecting drives
2023-06-16 21:10:30 +02:00
e8507d23ee
kernel: Warn if no ATA controller is found
2023-06-16 21:10:30 +02:00
d9a1e8a980
kernel: Add a KMutex class and use that for ATA::Controller locking
2023-06-16 21:10:30 +02:00
7efc6dc985
kernel/x86_64: Add basic ATA controller and channel identification
2023-06-16 21:10:30 +02:00
beeafb73e6
kernel/PCI: Add more PCI field types
2023-06-16 21:10:30 +02:00
f0caf010bf
kernel/x86_64: Add a way to register IRQ handlers from other kernel subsystems
2023-06-16 21:10:26 +02:00
3283991ec6
kernel: Keep the old Timer::ticks_ms() API.
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continuous-integration/drone/push Build is passing
Removing this API broke the ATA branch.
2023-06-03 21:02:18 +02:00
8bcec00a9d
kernel: Change the timer subsystem to use timespecs natively
continuous-integration/drone/push Build is passing
2023-06-03 13:15:10 +02:00
11a4f8cc90
kernel: Wake the parent process when a child exits because of a page fault
2023-05-28 21:50:13 +02:00
916a73ca95
kernel: Rework the timer subsystem to count in microseconds
continuous-integration/drone/push Build is passing
2023-05-07 21:51:36 +02:00
72dadc6706
kernel: Define a constant to check for default memory access
continuous-integration/drone/push Build is failing
2023-05-07 21:38:38 +02:00
b25e212880
kernel: Make a generic function for checking memory flags
continuous-integration/drone/push Build is failing
2023-05-07 21:37:01 +02:00
293a992133
kernel: Add a kernel_wait_for_event() function to avoid weird calls to kernel_wait in kthreads
continuous-integration/drone/push Build is passing
2023-05-04 23:43:00 +02:00
4a7f68b989
kernel: Add a convenience wake_up() function
2023-05-04 23:35:54 +02:00
3ed9e578c7
kernel/x86_64: Wake the IO thread up only when there is an IO event, instead of polling every 10 ms
2023-05-04 23:07:09 +02:00
abaf24d0da
kernel/CPU: Move some stuff to StringView
2023-05-03 17:35:46 +02:00
77dcfab5ef
kernel: Run the initialization process in a thread
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continuous-integration/drone/push Build is passing
This way we can give it more stack and also reclaim it later!
2023-04-28 13:23:07 +02:00
5d56638851
kernel: Ignore all non-bootstrap processors
continuous-integration/drone/push Build is passing
2023-04-22 12:25:43 +02:00
df95126ccd
kernel: Remove unneeded debug logs & random cleanups
continuous-integration/drone/push Build is passing
2023-04-14 21:10:38 +02:00
ed0727332b
x86_64/CPU: Assign a proper IRQ number to the keyboard interrupt
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continuous-integration/drone/push Build is passing
Ah, the dangers of copy-and-paste...
2023-04-04 12:13:34 +00:00
d48d0efb07
kernel: Add names to threads
continuous-integration/drone/push Build is passing
2023-03-24 21:05:38 +01:00
f084b57f39
kernel+sh: Allow using Ctrl+D to send EOF
continuous-integration/drone/push Build is failing
2023-03-24 17:21:21 +01:00
d63c8abbfd
kernel/x86_64: Terminate page faults in a waitpid-friendly way
2023-03-24 00:52:17 +01:00
03adaa356c
kernel: Avoid printing keypresses twice
2023-03-23 21:33:50 +01:00
d33fccc66f
kernel: Implement reading from /dev/console
2023-03-19 19:15:19 +01:00
cd00e41f59
arch/x86_64: Decode keyboard scancodes
continuous-integration/drone/push Build is passing
2023-03-19 11:17:43 +01:00
54f2d35416
kernel: Add the fork() system call
2023-03-18 23:45:48 +01:00
8c72e9a49a
kernel: Add an exec() system call
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continuous-integration/drone/push Build is passing
Doesn't support arguments or environment for now.
2023-03-16 22:44:58 +01:00
e30eec4213
kernel/x86_64: Avoid kernel panics when a page fault occurs in a userspace thread
2023-03-07 21:08:05 +01:00
ca85a69442
kernel: Save floating-point environment when switching in and out of userspace threads
2023-03-07 20:59:11 +01:00
de38eb6877
luna: Remove pure_cstyle_format
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continuous-integration/drone/push Build is passing
It was causing a lot of code duplication. If someone doesn't have errors, just return {} from the callback and unwrap the Result.
2023-03-02 13:38:21 +01:00
519aa347dd
x86_64: Remove recursive mapping related things from MMU.h
continuous-integration/drone/push Build is passing
2023-02-27 13:07:52 +01:00
3ec54fafde
x86_64/MMU: Do not allocate level 1 page tables for huge page entries
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continuous-integration/drone/pr Build is passing
continuous-integration/drone/push Build is passing
This would leak memory, since we would never end up using them.
2023-02-27 12:55:15 +01:00
752dfdbf1c
MemoryManager: Reuse the existing mapping of physical memory that MMU has
continuous-integration/drone/pr Build is passing
2023-02-27 12:51:29 +01:00
8df441064f
x86_64/MMU: Map the physical address space using huge pages
2023-02-27 12:47:17 +01:00
426f6e4da8
x86_64: Allow mapping huge pages, but don't do it yet
2023-02-27 12:41:28 +01:00
837d483e0b
x86_64/MMU: Copy from the mapped kernel directory instead of the physical version
continuous-integration/drone/pr Build is passing
2023-02-27 12:30:52 +01:00
995d1bc36e
x86_64/MMU: Map all physical memory into the higher half instead of using recursive mapping
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continuous-integration/drone/pr Build is passing
This still has a few problems. Notably, we are not using huge pages for this mapping, which would be a lot more efficient.
Right now, used memory is 8.1 MiB at boot for a 256MiB system.
But after improving it, this system will be much better than recursive mapping.
fork() will be MUCH easier to implement, for example.
2023-02-27 12:24:21 +01:00
794567327f
kernel, luna: Port non-VFS changes over from pull request #22
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continuous-integration/drone/push Build is passing
OwnedPtr, SharedPtr: Add operator bool
Option, Result: Make try_move_value() non-const since it modifies the Option
kernel: Switch to a stack we control for the main task as soon as we leave early boot
Heap: Fix GPF caused when making many small allocations
Heap: Avoid accessing a block after it's potentially deleted
luna: Skip UBSAN.cpp in CMakeLists as that's not implemented yet
luna: Use spinlocks in the heap implementation
kernel, luna: Move Spinlock.h to luna
Option: Use __builtin_launder to ensure that the compiler doesn't label this as UB
SharedPtr: Implement make_shared using adopt_shared
SharedPtr: Delete ptr on failure in all adopt_shared* functions
2023-02-25 17:09:03 +01:00
635437a4a4
luna: Add a new idiomatic way to mark unused parameters as used while keeping their names
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Just call ignore(...)
2023-01-25 21:14:44 +01:00
39042cbbd4
kernel: PCI constness updates
continuous-integration/drone/push Build is passing
2023-01-25 21:01:45 +01:00
fa29d6e9b9
kernel: Rename PCI::callback_t to PCI::Callback
continuous-integration/drone/push Build is passing
2023-01-25 20:58:59 +01:00
15c89a3592
kernel: Implement filtered PCI scans
continuous-integration/drone/push Build is passing
2023-01-23 21:24:05 +01:00
6677c643a5
kernel: Start scanning the PCI bus for devices
continuous-integration/drone/push Build is passing
2023-01-23 20:07:17 +01:00
de04c094e7
x86_64: Skip enabling WP for now until I find how to check for its availability
2023-01-23 20:06:45 +01:00
d5b1d72396
x86_64/MMU: Map the kernel page directory to virtual memory
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This avoids depending on the kernel address space to create a new userspace one,
since there is no physical memory access.
This was fine for a single process, since its address space was created from the kernel one
and no more address spaces were created,
but for two or more, this started to become problematic, since we would create one address space
while being in another process's address space, which has no direct mapping of physical memory.
2023-01-22 14:46:03 +01:00
631cdd0204
x86_64/CPU: Skip null instruction pointers on stack trace generation
continuous-integration/drone/push Build is passing
2023-01-16 20:44:45 +01:00
1b807a4e06
arch/Timer: Make sure ARCH_TIMER_FREQ is a power of two
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(avoid division and modulo, division is slow)
Fortunately, GCC will optimize divisions by powers of two to simple bitwise shifts :)
2023-01-16 19:43:05 +01:00
84c82a4e75
luna, kernel: More constness
continuous-integration/drone/push Build is passing
2023-01-10 19:31:41 +01:00
a8a64863c8
kernel, libc: Add clock_gettime()
2023-01-07 00:21:08 +01:00
87a4bc91d8
arch/x86_64: Nicer display for page faults that shows a human-readable version of the error code
2023-01-06 17:31:22 +01:00
fd8a0175d9
Add a syscall infrastructure (our baby program can print to the console now!)
continuous-integration/drone/push Build is passing
2023-01-05 22:39:56 +01:00
0aac6c888d
x86_64: Basic exit() syscall!
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User processes need to do something, amirite?
2023-01-05 21:53:48 +01:00
31ea030c7f
MMU: Add functions to create and delete userspace page directories
2023-01-05 21:50:26 +01:00
5854e5e530
Add newlines at end-of-file
2023-01-02 13:07:29 +01:00
7952d1d8a0
x86_64: Add basic keyboard support with an ASYNC DRIVER
continuous-integration/drone/push Build is passing
2022-12-26 19:59:18 +01:00
a1eca479d5
x86_64: Add a getter for the initial page directory
continuous-integration/drone/push Build is passing
2022-12-26 12:57:25 +01:00
2600acc96c
Thread: Add init_regs_user()
2022-12-26 12:46:07 +01:00
0054777e7d
x86_64: Warn if NX is not supported
2022-12-26 12:11:10 +01:00
08984e1673
x86_64: Create a has_flag() helper function and remove redundant clearing of reserved bits
2022-12-26 12:10:47 +01:00
59d69f684f
x86_64: Add general protection fault handler
continuous-integration/drone/push Build is passing
2022-12-24 11:49:47 +01:00
a3595e71a9
Update .clang-format
continuous-integration/drone/push Build is passing
2022-12-21 20:22:44 +01:00
2e8ea724a0
arch/x86_64: Refactor the stack tracing code to remove duplicate code
continuous-integration/drone/push Build is passing
2022-12-21 17:21:01 +01:00
a89ae9bed7
Run include-what-you-use
continuous-integration/drone/push Build is passing
2022-12-17 15:51:19 +01:00
95b0091622
Split off arch/x86_64/CPU.cpp into various files
continuous-integration/drone/push Build is passing
2022-12-17 15:45:06 +01:00
59c9d8f119
asm -> asm volatile
continuous-integration/drone/push Build is passing
2022-12-17 14:32:24 +01:00
abbed13f27
Add a 'pure' variant of cstyle_format which is infallible
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If we cannot fail to output, it doesn't make sense to propagate errors. So if you're SURE there are no errors, use pure_cstyle_format().
If, however, output can fail, use cstyle_format().
This has a drawback of adding quite a bit of code duplication to Format.cpp.
Some of it is dealt using templates, but some code still remains duplicate.
2022-12-17 12:38:22 +01:00
9d6235e109
CPU: Add a pause() method
2022-12-17 10:45:55 +01:00
59765aa334
Rename String.h -> CString.h
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continuous-integration/drone/push Build is passing
Let's not confuse String.h with a managed string class, it's in fact the equivalent of the C stdlib's <string.h>
2022-12-16 20:40:04 +01:00
814672c771
Remove some redundant error propagation
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continuous-integration/drone/push Build is passing
Why can printing to the serial port or format onto a string fail?
Even if cstyle_format returns Result<usize>, we shouldn't always follow suit.
2022-12-16 18:32:29 +01:00
6cee208e62
Kernel: Enable -Wsign-conversion
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continuous-integration/drone/push Build is passing
For real this time, turns out me, being dumb, added it to Luna instead of the kernel.
2022-12-08 15:09:32 +01:00
c8302a4fef
Add convenience functions to print the stack trace directly
continuous-integration/drone/push Build is passing
2022-12-07 18:11:24 +01:00
0d437cfcca
Add support for stack traces
continuous-integration/drone/push Build is passing
2022-12-07 17:39:59 +01:00
d93d95f23c
Add sleeping mechanism
2022-12-07 16:11:59 +00:00
57517252d8
Add a state to Thread
2022-12-07 16:11:59 +00:00
c907e16311
x86_64: Invoke the scheduler every millisecond
2022-12-07 16:11:59 +00:00
12aa014a3d
Add a Thread class which can be part of a DoublyLinkedList
2022-12-07 16:11:59 +00:00
0bbd026660
CPU.h: pragma once
2022-12-07 16:11:59 +00:00
5d988c088f
Make idle_loop noreturn
2022-12-07 16:11:59 +00:00
c657b302c9
Timer: add raw_ticks
2022-12-07 16:11:59 +00:00
fd6a74e61c
CPU: Add an idle_loop method
2022-12-07 16:11:59 +00:00
