Commit Graph

29 Commits

Author SHA1 Message Date
891085e151 Successfully able to create a disk-image file
- Created a scripts folder
- Written instructions on how to create the disk image
- Working on a python build script that executes all other scripts

The scripts folder should contain scripts to build a full installation of
our operating system. Scripts like creating a filesystem should be found here
2023-02-02 14:59:42 +01:00
364d10d02e src folder -> source folder; makes merging with dev a bit easier. 2022-09-10 20:06:49 +02:00
2e59e6593e Add proper Physical memory management to this branch
to ensure it doesn't get too out of date

We can now run the FAT command to demo reading out the FAT16 filesystem,
however this will cause the need for a reboot as after this command. We are FOR NOW
not able to put in any new commands
2022-03-12 16:56:50 +01:00
b4cff3e667 Basic block allocation for physical memory allocation.
- 1 block = 4096 bytes : because this will make page fault handling possibly
somewhat easier

- 1 byte in the bitmap = 8 blocks of physical memory

unsure if the allocation is perfect ... guess i'll find out some day if this is actually correct.

The bitmap needs 16kb to keep track of 2gb of physical memory. Seems a decent percentage to me.
2022-02-26 20:55:34 +01:00
97606dbf71 Clean up of debugging logs and new commands.
As this project grows it becomes important to keep things properly organised.
In this commit I've put some effort into making the kernel.cpp file more consise and thus improve its
readability.
Certain parts of the code have gotten their own definition file where before it
was only a header file.

- Moving the Supervisor Terminal into its own definition file.
- Subtracting debugging messages with preprocessor ifdef's
- Time and Date is now not just a header but has its own proper definition file
- Banner is displayed when booting up
- Terminal has a couple new commands

	Commmand		Description
	=================|||||===================================================
	DATE (was TIME)		Displays the curren time, date and ticks
	VERSION			Displays system version information
	MEMORY			Displays memory information
2021-12-29 16:15:18 +01:00
0d8ef065e0 Interactive supervisor mode
To ease the pain of debuggin I can now interact with the system through a
very simplistic terminal. Hopefully things can be tested more easily by activating
the piece through a simple command. The max characters for a command is 10.

To achieve this I have had to make the following changes.
- Changed IRQ to update a global status variable
- Added a standalone keyboard driver with getKey functions
- Changed the main kernel loop to display a prompt
- Added a strncmp function to the clib/string file
2021-12-28 19:52:48 +01:00
19b9cfe908 Reading files from disk
- Modified makefile to start the virtualbox vm on `make run`
- Listing files in rootdirectory with their properties and
	content
2021-12-27 19:35:24 +01:00
b8d75dddae Moving lots into seperate folders to cleanup the project structure
- Drivers have now gotten Category folders
- RSDP is now called ACPI
- Ports folders is now called Serial to show that its a serial driver
- Paging assembly definition is moved to the memory folder
- VGA folder has moved into the drivers
- Patched the makefile and include statements to reflect the changes
	in the project structure
2021-12-27 15:26:32 +01:00
2621399349 Small code fix up
- Moved memcmp function to temporary libc/mem.h
- I/O functions are inlined
- ATA_DEVICE read function won't print the 512 bytes by default
2021-12-24 20:08:18 +01:00
88cc1d75bb Re-enabled interrupts from keyboard, Enabled and configured the PIT to throw interrupts at a regular interval 2021-12-20 21:53:57 +01:00
2db83b33e1 ATAPI can identify a device correctly 2021-12-01 00:00:45 +01:00
72438ae70d Makefile: Added ISO test option for qemu. 2021-11-28 23:06:21 +01:00
5089da5e9e PCI: Improved syntax of PCI enumeration, Added a PCI information storage class and structs 2021-11-28 16:46:16 +01:00
ec654143c6 Basic PCI Enumeration 2021-11-25 22:05:16 +01:00
ba043ef31b Small improvements on Makefile, TODO.md has been renamed to features.md 2021-11-22 20:01:12 +01:00
3a87b74224 Renaming/Moving stuff into a different file structure 2021-11-16 13:57:15 +01:00
32909aaed9 GDT is running again 2021-11-06 21:56:42 +01:00
5fb55367ca Implementation of simplistic physical memory manager 2021-11-06 16:27:13 +01:00
d79fc6e8e2 Split up boot.s into multiple assembly definitions, Started page frame allocator implementation, kterm definition is now considered c plus plus 2021-11-06 14:05:29 +01:00
bdcf9e66f8 Small adjustment in directory structure of memory and bootloader files in kernel 2021-11-02 21:15:00 +01:00
c9b789ed7b Added a bunch of new stuff no time to figure out what's what, No longer any compiler warnings 2021-11-02 21:03:11 +01:00
092c5d520d Added option to create an iso 2021-10-23 12:26:15 +01:00
643f2d708b Added emulator options, Added header for VBE driver, Added CPUID function, Added demodisk.img as drive 2021-07-22 22:14:58 +01:00
f2c8b8ac5c Improved multiboot compliance 2021-07-22 20:02:47 +01:00
592db0ebcf More work on interrupt handling, Started timer interrupt implementation, PIC remapped hopefully successfull 2021-05-16 15:53:14 +01:00
nigel
28ac6a05af Interrupts are working.. processor no longer resets 2021-05-12 20:43:15 -04:00
5e668f5e67 Basics for an proper GDT and IDT 2021-05-12 23:03:00 +01:00
b41f6a380e Implemented serial for basic debugging, Added MMU enable to kernel main 2021-05-10 21:33:25 +01:00
nigel
b44f6761f1 New directory structure 2021-05-02 15:23:50 -04:00