Bananymous
c9e9cfd361
Bootloader: Implement VESA video mode query and pass it to kernel
...
Kernel now gets framebuffer from bootloader. Framebuffer dimensions
and bpp are hardcoded in bootloader, but will probably be read from
config file at some point.
2023-11-17 22:45:35 +02:00
Bananymous
cb5a5d3ed1
Kernel/Bootloader: banan-os can now be booted with my bootloader :D
2023-11-17 20:33:02 +02:00
Bananymous
95af728e39
Kernel: Don't calculate divisor in a for loop in ext2 inodes
2023-11-17 19:02:01 +02:00
Bananymous
24d87acec4
Kernel: Serial now uses random size for some serial ports
...
If the serial port doesn't repond with a size, just use a random
one. There is no reason to ditch the whole output if you cannot
determine its size.
2023-11-17 18:56:02 +02:00
Bananymous
84040e64b8
Kernel: Don't use multiboot2 explicitly. Parse it to common structure
...
This allows support of multiple different bootloaders
2023-11-17 18:54:59 +02:00
Bananymous
c084ce8b01
Kernel/LibC: Implement readlink and readlinkat
2023-11-11 23:16:52 +02:00
Bananymous
fda0dfec30
Kernel: Make TmpFS enforce max page count.
2023-11-07 16:13:21 +02:00
Bananymous
d6ae1bcf36
Kernel: Remove now obsolete RamFS
...
Everything is using now the better TmpFS which uses physical pages
for page allocation instead of the static kmalloc memory.
2023-11-07 16:07:11 +02:00
Bananymous
5044810451
Kernel: Make DevFS use the new and better TmpFS instead of RamFS
2023-11-07 16:05:05 +02:00
Bananymous
147cd93ed3
Kernel: Add method to TmpFS for looping over all (cached) inodes
2023-11-07 16:04:34 +02:00
Bananymous
07b5920f3f
Kernel: Lock TmpFS in all its methods
2023-11-07 16:03:52 +02:00
Bananymous
2bcf934389
Kernel: Implement symlinks to TmpFS
2023-11-07 15:59:50 +02:00
Bananymous
1405712f26
Kernel: Make PS/2 keyboard wait until interrupts are enabled
2023-11-07 15:58:50 +02:00
Bananymous
885ed218fa
Kernel: Make unlinking from /proc always fail with EPERM
2023-11-07 02:40:27 +02:00
Bananymous
b1f431d962
Kernel: /tmp is now TmpFS instead of RamFS
2023-11-07 02:36:22 +02:00
Bananymous
06e176e6b9
Kernel: Make ProcFS use the new TmpFS internally
2023-11-07 02:35:44 +02:00
Bananymous
b7771e95ac
Kernel: Implement TmpFS Inode unlinking and deletion
2023-11-06 21:49:12 +02:00
Bananymous
3e33fc156b
Kernel: TmpFS directory inodes now iterate over only valid entries
2023-11-06 21:41:51 +02:00
Bananymous
438f01a856
Kernel: Fix TmpFS directory entry enumeration early return
2023-11-06 21:06:10 +02:00
Bananymous
5dd8189048
Kernel: Fix ext2 directory listing for big directories
2023-11-06 21:05:58 +02:00
Bananymous
ff6b127c3a
Kernel: Implement TmpFS directory listing
2023-11-06 21:05:58 +02:00
Bananymous
c3ed700324
Kernel: Implement TmpFS inode chmod
2023-11-06 20:11:34 +02:00
Bananymous
ba2f09a4e6
Kernel: Cleanup TmpFS code and block access doesn't require allocs
...
TmpFS blocks are now accessed with a simple wrapper
2023-11-06 20:07:09 +02:00
Bananymous
c92c1b8e2b
Kernel: TmpInode blocks are on demand allocated
2023-11-06 10:44:37 +02:00
Bananymous
c27d20abd8
Kernel: Implement read/write/truncate for TmpFileInode
2023-11-05 02:28:43 +02:00
Bananymous
99d7b0917d
Kernel: Start work on proper TmpFS in Heap instead of kmalloc memory
2023-11-04 18:18:45 +02:00
Bananymous
8b4e129fc1
Kernel: Add better APIs for fast page
2023-11-04 18:13:16 +02:00
Bananymous
f6c312a6b3
BuildSystem: using sysroot doesn't need root privileges anymore!
...
Sysroot is now created with fakeroot. This allows root access to be
only needed for disk image creation, since it uses loopback devices.
2023-11-04 17:50:43 +02:00
Bananymous
ca34ece8ef
BAN: Update ASSERT api
...
its now much harder to mix < with <= and > with >=
2023-11-02 00:01:12 +02:00
Bananymous
71ecdd7245
Kernel: Canonicalize vaddr before using it
2023-10-30 19:20:17 +02:00
Bananymous
b80b59ce24
Kernel: Remove unused externs in kernel.cpp
2023-10-30 19:09:31 +02:00
Bananymous
640d27748f
Kernel: Temporarily force FileBackedRegion mappings writable
...
Now that write-protect bit is enabled this is neccessary.
2023-10-30 19:08:33 +02:00
Bananymous
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
Bananymous
6e676ee8c5
Kernel: Remove GeneralAllocator since it was not used
2023-10-30 18:13:17 +02:00
Bananymous
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
Bananymous
3f638f125e
Kernel: panic takes arguments as rvalue references
2023-10-30 16:22:02 +02:00
Bananymous
35f8f44510
Kernel: Fix ext2 small link deallocation
...
Also fix deallocation bug
2023-10-30 16:22:02 +02:00
Bananymous
0c590821ed
Kernel: only map kernel from g_kernel_start onwards
2023-10-30 16:22:02 +02:00
Bananymous
6ef153b6ca
Kernel: Enable Write Protect. This seems to be good for security
2023-10-30 12:23:22 +02:00
Bananymous
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
Bananymous
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
Bananymous
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
Bananymous
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
Bananymous
240a687d8f
Kernel: Fix ext2 inode block allocation with triply indirect blocks
2023-10-28 16:53:00 +03:00
Bananymous
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
Bananymous
38c267b4c8
Kernel: Fix ext2 inode deletion
...
fsck now reports clean filesystem even after deleting files
2023-10-26 02:05:05 +03:00
Bananymous
87ff38664a
Kernel/LibC: Add syscall and wrapper for unlink
2023-10-25 21:45:04 +03:00
Bananymous
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
Bananymous
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
Bananymous
e9b7cf332d
Kernel: Implement directory creation for RamFS
2023-10-25 19:41:34 +03:00
Bananymous
4ee2f0f789
Kernel: Implement Ext2 directory creation
2023-10-25 19:37:04 +03:00
Bananymous
18e90d305d
Kernel: Add Inode API for creating directories
2023-10-25 19:36:04 +03:00
Bananymous
fd1b331b86
Kernel: Ext2FS now uses Ext2Inodes as cached values
2023-10-25 19:34:00 +03:00
Bananymous
5c51d09309
Kernel: Fix read offset of RamFileInode
2023-10-25 02:53:20 +03:00
Bananymous
627b8cc140
Kernel/LibC: implement chmod syscall + libc wrapper
2023-10-25 02:35:37 +03:00
Bananymous
2d0da93ac4
Kernel: Add timeout to ACHI commands
...
ACHI commands can now fail from timeouts.
2023-10-24 11:56:25 +03:00
Bananymous
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
Bananymous
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
Bananymous
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
Bananymous
19696bdad3
Kernel: TTY doesn't panic if it doesn't find input device
2023-10-16 16:58:39 +03:00
Bananymous
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
Bananymous
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
Bananymous
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
Bananymous
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
Bananymous
37bc52988c
Kernel: Don't require framebuffer
...
Initializes virtual tty only if framebuffer is initialized
2023-10-16 01:44:54 +03:00
Bananymous
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
Bananymous
73b9c28457
Kernel: PCIDevice stores its vendor id and device id
2023-10-16 01:44:54 +03:00
Bananymous
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
Bananymous
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
Bananymous
128202a55a
Kernel: Cleanup GDT code
2023-10-13 16:18:22 +03:00
Bananymous
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
Bananymous
63f64619bc
Kernel: add NEVER_INLINE and make Interruptable not constructable
2023-10-13 16:17:27 +03:00
Bananymous
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
Bananymous
74b77ba2ac
Kernel: Debug temporary debug print just to beginning when full
2023-10-13 12:43:52 +03:00
Bananymous
888e44ce0b
Kernel: Allow getting ACPI headers with same signature
2023-10-13 11:24:21 +03:00
Bananymous
b3b8376cca
Kernel: Fix PhysicalRange mapping size
2023-10-13 03:45:01 +03:00
Bananymous
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
Bananymous
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
Bananymous
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
Bananymous
bde9ff9319
Kernel: Generalize ATA device and cleanup code
2023-10-12 21:35:25 +03:00
Bananymous
75fdf4c3c6
Kernel: Add Timer::ns_since_boot()
2023-10-12 21:16:39 +03:00
Bananymous
b723ed5fd2
Kernel: Add vaddr/paddr conversion functions to DMARegion
2023-10-12 15:20:05 +03:00
Bananymous
89c975350d
Kernel: PCI can now get interrupts for devices
2023-10-11 22:18:58 +03:00
Bananymous
f27974dd3c
Kernel: PCI cleanup PCI::Device API
2023-10-11 21:52:08 +03:00
Bananymous
d4c9f371a6
Kernel: make DMARegion::create static and fix mapping
2023-10-08 18:18:36 +03:00
Bananymous
2aabf43ace
Kernel: fix some math in physical ranges
...
I allocated 1 bitmap page per 8 data pages. Bitmap page can actually
store 8*PAGE_SIZE data pages.
Also properly set last bits in bitmap. I did not care about endianness
but now we set the bits on unsigned long longs instead of bytes.
2023-10-08 13:25:34 +03:00
Bananymous
a6ca9fd453
Kernel: Implement bare boness DMA Region
...
This does nothing but allocate contiguous physical and virtual memory
and map it as CacheDisable. Also memory is automatically freed RAII style.
2023-10-08 02:57:22 +03:00
Bananymous
799aab02f5
Kernel: Add API for getting contiguous physcial pages
...
This will be used to create DMA regions.
2023-10-08 02:57:22 +03:00
Bananymous
0fae2c7309
Kernel: Rework physical memory allocation
...
PhysicalRange is now much simpler bitmap. This makes expanding
PhysicalRange API much easier.
2023-10-08 02:50:23 +03:00
Bananymous
7ba72b1507
Kernel: Fix PCI BarRegion offsets
...
Calculations accidentally assumed bar registers are 8 byte instead
of 4.
2023-10-08 02:50:23 +03:00
Bananymous
f21d4e794c
Kernel: Rework whole ATA driver structure
...
Make ATA driver more compatible when we are adding SATA support
2023-10-08 02:50:23 +03:00
Bananymous
27eb5af6f0
Kernel: Rework interrupt mechanism
...
All interruptrable classes now inherit from Interruptable which
has methdo handle_irq which is called on a interrupt.
2023-10-05 18:53:45 +03:00
Bananymous
68a913c838
BuildSystem: Don't strip kernel
2023-10-05 18:52:44 +03:00
Bananymous
39bc6c43dc
Kernel: Expose command line and environment to /proc
2023-09-30 23:01:33 +03:00
Bananymous
5ee3506474
Kernel: Add physical memory info to /proc/{pid}/meminfo
2023-09-30 22:11:45 +03:00
Bananymous
785de5f9b9
Kernel: /proc/{pid}/meminfo now reports per process memory usage
2023-09-30 21:20:18 +03:00
Bananymous
8f630a97df
Kernel: Add procfs that contains only pids
2023-09-30 21:19:36 +03:00
Bananymous
56bb419884
Kernel: All process' memory areas can report their virtual mem usage
2023-09-30 21:15:46 +03:00
Bananymous
9f0797047f
Kernel/LibC: dirent now contains file type
2023-09-30 20:46:57 +03:00
Bananymous
e8a0eeb0b4
Kernel: RamInode verifies that you have not specified mode type
...
This is kinda weird behaviour, but it ensures the user cannot
create e.g. CharacterDevice with mode having IFLNK.
The Inode overrider is the only one setting the mode.
2023-09-30 20:46:57 +03:00