mirror of
https://github.com/Leonmmcoset/cleonos.git
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46 lines
1.9 KiB
Markdown
46 lines
1.9 KiB
Markdown
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# CLeonOS Stage1
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## Stage Goal
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- Bring up Limine boot path and CLKS kernel skeleton.
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- Support x86_64 and aarch64 build targets in one Makefile.
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- Initialize serial log channel and framebuffer + virtual TTY output.
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- Build ISO with ramdisk root layout module.
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## Acceptance Criteria
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- Kernel starts via Limine and reaches `clks_kernel_main`.
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- Serial output shows boot logs and architecture banner.
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- Framebuffer renders TTY text output for kernel logs.
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- `make ARCH=x86_64 iso` and `make ARCH=aarch64 iso` produce architecture-specific ISO paths.
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- Ramdisk archive is generated from `/ramdisk` and packed into boot image.
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## Build Targets
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- `make setup`
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- `make setup LIMINE_REF=<branch-or-tag>`
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- `make ARCH=x86_64 kernel`
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- `make ARCH=x86_64 iso`
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- `make ARCH=x86_64 run`
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- `make ARCH=x86_64 debug`
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- `make ARCH=aarch64 kernel`
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- `make ARCH=aarch64 iso`
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- `make ARCH=aarch64 run AARCH64_EFI=/path/to/QEMU_EFI.fd`
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## QEMU Commands
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- x86_64:
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- `qemu-system-x86_64 -M q35 -m 1024M -cdrom build/CLeonOS-x86_64.iso -serial stdio`
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- aarch64:
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- `qemu-system-aarch64 -M virt -cpu cortex-a72 -m 1024M -bios QEMU_EFI.fd -cdrom build/CLeonOS-aarch64.iso -serial stdio`
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## Common Bugs and Debugging
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- No boot entry in Limine menu:
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- Check `configs/limine.conf` copy path and ISO folder layout under `/boot/limine`.
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- Black screen but serial has output:
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- Verify framebuffer request response exists; inspect `[WARN][VIDEO]` line in serial.
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- No serial output:
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- x86_64: ensure QEMU uses `-serial stdio` and COM1 init path is active.
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- aarch64: ensure `virt` machine and PL011 MMIO base `0x09000000` are used.
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- Linker errors for wrong architecture:
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- Confirm `ARCH` value and matching cross toolchain (`x86_64-elf-*` or `aarch64-elf-*`).
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- Setup fails while cloning Limine:
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- Check network/proxy and try `make setup LIMINE_REF=<available-ref>`.
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- ISO generation failure:
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- Ensure `limine` artifacts exist and `LIMINE_DIR` points to valid files.
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