From 14b109ea24dc5cb1db948de57a2a44c80ef4622e Mon Sep 17 00:00:00 2001 From: Brett Weiland Date: Wed, 24 Mar 2021 15:36:54 -0500 Subject: modified: README.md modified: compiler/create_crosscompiler.sh deleted: notes modified: src/.gdb_history deleted: src/amd64_vol2.pdf modified: src/bootloader/bios_functions/bios_disk.asm modified: src/bootloader/bios_functions/print.asm modified: src/bootloader/bootloader.asm modified: src/bootloader/cpu_check.asm modified: src/bootloader/enter_kernel.asm deleted: src/bootloader/enter_kernel_backup modified: src/bootloader/gdt.asm deleted: src/bootloader/multicore.asm deleted: src/bootloader/notes new file: src/debug/gdbinit.gdb deleted: src/indigo_os modified: src/kernel/include/libc.h modified: src/kernel/include/paging.h modified: src/kernel/include/video.h modified: src/kernel/kernel.c modified: src/kernel/libs/acpi.c modified: src/kernel/libs/drivers/serial.c modified: src/kernel/libs/drivers/video.c modified: src/kernel/libs/libc.c modified: src/kernel/libs/page.c modified: src/link.ld modified: src/makefile new file: tools/README.md modified: tools/page/page.py --- README.md | 26 +++++++++++--------------- 1 file changed, 11 insertions(+), 15 deletions(-) (limited to 'README.md') diff --git a/README.md b/README.md index 34cd96c..5ed8726 100644 --- a/README.md +++ b/README.md @@ -1,17 +1,12 @@ # IndigoOS -This project is in it's infancy. There's a lot to clean up (bootloader), and this is for my own entertainment. I'll likely be working on it on and off, and only updating the branch after major steps forward. +IndigoOS (name likely to change) will be a unix-like operating system for x86-64 computers. I'm hoping to impliment many things a modern operating system would have, including a desktop enviornment, pre-emptive multithreading, ASLR, and memory protection. I'd also like to port games such as DOOM. -##Questions and answers -### Why are you already parsing APCI tables? -When I first started this project, it was intended to be a bare metal mandelbrotset, then an operating system. This way I could set up an enviornment and become comftorable with the x86 architecture. I was going to have a pretty simple multi-core SMP setup to acheive a higher speed. However, as I worked more and more, I realized that this plan was counter productive. The main reason for this is that I'd be doing a lot of "static" work (for lack of a better word). It would be too hard to modify an existing project into an operating system, due to all the code I'd need to discard. +This project is in it's infancy. However, I'm making quick progress. I'll only commit major changes to keep the commit history clean. -### Will you support UEFI? -Maybe some day. What I have so far of the bootloader was a lot of work, so I need to take a break on it for now. - -##Cleaning list +## Cleaning list - [] clean RSDP v1 vs v2+ ugly unison code -- [] clean static paging code if possible +- [] clean static paging code - [] fallback to best compatable video mode if not found - [] find out when and why checksum of binary vs debug binary stripped is occationally diffrent (maybe linker script?) @@ -19,7 +14,7 @@ Maybe some day. What I have so far of the bootloader was a lot of work, so I nee ##debugging - [x] get debugging into into a seperate elf for GDB - [] md5sum of striped binary is the same as one built without debugging info -_Almost_ always, there was one time when it wasn't. Can't seem to reproduce. Check linker sizes. +_Almost_ always, there was one time when it wasn't. Can't seem to reproduce. Check linker sizes and included sections. ##bootloader - [x] make USB bootable as floppy @@ -34,14 +29,15 @@ _Almost_ always, there was one time when it wasn't. Can't seem to reproduce. Che - [x] boot into kernel long mode ##kernel (listed in order of dependency) -###ACPI -- [x] find, check, and parse RSDP -- [x] find, check, and parse RSDT or XSDT +###Memory - [x] static page mapping +- [] dynamic page allocation - 3/24/21, almost done, will likely finish soon. - [] remap paging to higher/more available physical address - [] remap kernel to higher virtual address -- [] re-create page tables to accomidate amount of ram in system without becoming too big -- [] dynamic page allocation + +###ACPI +- [x] find, check, and parse RSDP +- [x] find, check, and parse RSDT or XSDT ###multicpu - [] boot cpus -- cgit v1.2.3