42772611ce
Kernel: Add fast page to page table
...
Add "fast page" to KERNEL_OFFSET. This is always present in page
tables and only requires changing the page table entry to map. This
requires no interrupts since it should only be for very operations
like memcpy.
I used to map all temporary mappings to vaddr 0, but this is much
better. C++ standard always says that nullptr access is undefined
and this gets rid of it.
Fixed some bugs I found along the way
2023-10-30 19:02:09 +02:00
6e676ee8c5
Kernel: Remove GeneralAllocator since it was not used
2023-10-30 18:13:17 +02:00
066fb44105
Kernel: Allow offsetof with packed fields
...
This is not standard C++ but should be fine with my toolchain.
2023-10-30 17:51:18 +02:00
3f638f125e
Kernel: panic takes arguments as rvalue references
2023-10-30 16:22:02 +02:00
35f8f44510
Kernel: Fix ext2 small link deallocation
...
Also fix deallocation bug
2023-10-30 16:22:02 +02:00
0c590821ed
Kernel: only map kernel from g_kernel_start onwards
2023-10-30 16:22:02 +02:00
6ef153b6ca
Kernel: Enable Write Protect. This seems to be good for security
2023-10-30 12:23:22 +02:00
130a69bac6
Kernel: Fix stack OOB detection
...
I now check both interrupt and normal stack to detect OOB. Processes
are killed if they encouner stack over/under flow.
2023-10-30 12:17:08 +02:00
0b5fcb3f88
Kernel/LibC: Add crt* files to LibC and remove crt0 from kernel
...
There was no reason for libc get crt0 from kernel.
2023-10-30 11:06:13 +02:00
18f61c5427
Kernel: Fix ACPI DSDT address
...
Read x_dsdt address only if fadt's length contains it. Bochs seems
to have version 1 fadt without the x_* fields.
2023-10-29 21:35:11 +02:00
76f48f095c
Kernel: Rewrite a lot of ext2 code
...
This commit consists of multiple big changes
1. blocks for inodes are now allocated on demand
- reading from non allocated block will just return zeroes
- writing to non allocated block allocates it
2. code doesn't really use raw pointers anymore
- all casts to uint32_t or structures are now replaced with
spans. either as<T> or as_span<T> which both are bounds
checked
3. code doesn't depend on random macros for accessing indirect blocks
- i added some recursive functions which take care of this :)
2023-10-28 22:13:28 +03:00
240a687d8f
Kernel: Fix ext2 inode block allocation with triply indirect blocks
2023-10-28 16:53:00 +03:00
35b46e37bb
Kernel: Fix ext2 inode deletion cleanup
...
I now cleanup all blocks (including direct) in i_block array
2023-10-28 16:52:56 +03:00
38c267b4c8
Kernel: Fix ext2 inode deletion
...
fsck now reports clean filesystem even after deleting files
2023-10-26 02:05:05 +03:00
87ff38664a
Kernel/LibC: Add syscall and wrapper for unlink
2023-10-25 21:45:04 +03:00
b7007016c0
BAN: Implement Ext2 file unlinking
...
Ext2 inodes can now be unlinked from directories and after last
inode closes (destructor gets called) we check if link count is 0
and cleanup the inode from filesystem
2023-10-25 21:43:36 +03:00
6ee4d10651
Kernel/LibC/Userspace: Implement mkdir and creat
...
Touch now uses creat insteadd of open with O_CREAT flag
2023-10-25 21:07:26 +03:00
e9b7cf332d
Kernel: Implement directory creation for RamFS
2023-10-25 19:41:34 +03:00
4ee2f0f789
Kernel: Implement Ext2 directory creation
2023-10-25 19:37:04 +03:00
18e90d305d
Kernel: Add Inode API for creating directories
2023-10-25 19:36:04 +03:00
fd1b331b86
Kernel: Ext2FS now uses Ext2Inodes as cached values
2023-10-25 19:34:00 +03:00
5c51d09309
Kernel: Fix read offset of RamFileInode
2023-10-25 02:53:20 +03:00
627b8cc140
Kernel/LibC: implement chmod syscall + libc wrapper
2023-10-25 02:35:37 +03:00
2d0da93ac4
Kernel: Add timeout to ACHI commands
...
ACHI commands can now fail from timeouts.
2023-10-24 11:56:25 +03:00
f3d9da9549
Kernel: Rewrite all read/write functions to use BAN::ByteSpan
...
This allows us to not work with raw pointers and use sized containers
for reading and writing.
2023-10-24 11:56:00 +03:00
c17cdb39d5
Kernel: Map multiboot2 memory in PageTable initialization
...
It cannot be assumed that multiboot data lies between kernel_end
and 2 GiB mark, so I properly allocate virtual address space for it.
2023-10-17 01:15:08 +03:00
69a39b7077
Kernel: Start using multiboot2 instead of multiboot
...
This allows better compatibility with (U)EFI and gives RSDP location
instead of me having to scan ram to find it.
2023-10-17 01:06:24 +03:00
19696bdad3
Kernel: TTY doesn't panic if it doesn't find input device
2023-10-16 16:58:39 +03:00
00dd7d85ce
Kernel: Fix device identification with all bits as ones
...
If device identification sends all ones, don't initialize the device.
2023-10-16 16:57:07 +03:00
0c88c74b76
Kernel: ATABuses are but to compatibility mode if possible
...
I don't support native mode ata bus (irq sharing) so ata buses are
but to compatibility mode if possible.
2023-10-16 16:56:12 +03:00
c4a640bcb6
Kernel: Fix ATADevice naming
...
ATADevice now stores its name instead of using static buffer. Old
static buffer was changing on every name query. I just hadn't noticed
since virtual machine disks were always sda.
2023-10-16 16:52:15 +03:00
0fdf8b6f68
Kernel: Fix PCI bugs
...
IO BarRegion used vaddr instead of the correct paddr. Add API for
memory region iobase query.
2023-10-16 16:50:49 +03:00
37bc52988c
Kernel: Don't require framebuffer
...
Initializes virtual tty only if framebuffer is initialized
2023-10-16 01:44:54 +03:00
1312a9dad2
Kernel: PCI checks if ethernet device is E1000 before initialization
...
I used to treat all ethernet deivices as E1000 but now it is actually
verified before initialization
2023-10-16 01:44:54 +03:00
73b9c28457
Kernel: PCIDevice stores its vendor id and device id
2023-10-16 01:44:54 +03:00
fc5bfa2cb3
Kernel: Clear TTY when setting as current
...
Actually this should replace from old buffer, but this works
for now.
2023-10-13 17:20:26 +03:00
f7e38ccfe4
Kernel: Don't crash if header type != 0 in bar region creation
...
Also remove spammy debug printing
2023-10-13 16:32:32 +03:00
128202a55a
Kernel: Cleanup GDT code
2023-10-13 16:18:22 +03:00
89d74a9088
Kernel: Separate scheduler execution and stack loading
...
Not sure if this is actually needed, but this allows actual
executing function to be in clean environment
2023-10-13 16:17:27 +03:00
63f64619bc
Kernel: add NEVER_INLINE and make Interruptable not constructable
2023-10-13 16:17:27 +03:00
518fd3fad0
Kernel: Add 16 more irq handlers
...
IDT will now panic if trying to assing handler for non supported
irq.
2023-10-13 16:17:27 +03:00
74b77ba2ac
Kernel: Debug temporary debug print just to beginning when full
2023-10-13 12:43:52 +03:00
888e44ce0b
Kernel: Allow getting ACPI headers with same signature
2023-10-13 11:24:21 +03:00
b3b8376cca
Kernel: Fix PhysicalRange mapping size
2023-10-13 03:45:01 +03:00
9c143d18b9
Kernel: Add temporary terminal output before controlling terminal
...
Starting work on getting this boot on real hardware.
2023-10-13 03:31:36 +03:00
9a6cc0dc2d
Kernel: Check whether ELF address space can be loaded
...
Before reserving address space in SYS_EXEC verify that ELF address
space is actually loadable. For example when trying to execute the
kernel binary in userspace, binarys address space would overlap with
current kernel address space. Now kernel won't crash anymore and
will just send SIGKILL to the process calling exec*().
2023-10-12 22:59:36 +03:00
adc5ff9e99
Kernel: Implement AHCI driver
...
SATA drives can now be used with banan-os. This allows much faster
disk access (writing 10 MiB from 30s to 1.5s). This can definitely
be optimized but the main slow down is probably the whole disk
structure in the os.
AHCI drive is now the default when running qemu.
2023-10-12 21:53:48 +03:00
bde9ff9319
Kernel: Generalize ATA device and cleanup code
2023-10-12 21:35:25 +03:00
75fdf4c3c6
Kernel: Add Timer::ns_since_boot()
2023-10-12 21:16:39 +03:00
b723ed5fd2
Kernel: Add vaddr/paddr conversion functions to DMARegion
2023-10-12 15:20:05 +03:00
