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880720250e
- add tools/doc_translator.py - translated docs into English Signed-off-by: longjin <longjin@DragonOS.org>
49 lines
1.5 KiB
Markdown
49 lines
1.5 KiB
Markdown
:::{note}
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**AI Translation Notice**
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This document was automatically translated by `Qwen/Qwen3-8B` model, for reference only.
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- Source document: kernel/boot/bootloader.md
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- Translation time: 2025-05-19 01:41:31
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- Translation model: `Qwen/Qwen3-8B`
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Please report issues via [Community Channel](https://github.com/DragonOS-Community/DragonOS/issues)
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:::
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# Bootloader
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## X86_64
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- [x] multiboot2
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- [x] HVM/PVH
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### HVM/PVH Boot on x86_64
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In the DragonOS note segment, there is a PVH header that allows QEMU to boot the DragonOS kernel using the ``-kernel`` parameter.
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## RISC-V 64
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DragonOS's boot process on RISC-V 64 is as follows:
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opensbi --> uboot --> DragonStub --> kernel
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This boot process decouples the DragonOS kernel from specific hardware boards, enabling the same binary file to boot and run on different hardware boards.
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## Kernel Boot Callbacks
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DragonOS abstracts the kernel bootloader, which is represented by the trait ``BootCallbacks``.
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Different bootloaders implement the corresponding callback to initialize the kernel's bootParams or other data structures.
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When the kernel boots, it automatically registers callbacks based on the type of bootloader. And at the appropriate time, it calls these callback functions.
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## References
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- [Multiboot2 Specification](http://git.savannah.gnu.org/cgit/grub.git/tree/doc/multiboot.texi?h=multiboot2)
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- [GNU GRUB Manual 2.06](https://www.gnu.org/software/grub/manual/grub/grub.html)
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- [UEFI/Legacy Boot - yujianwu - DragonOS Community](https://bbs.dragonos.org/forum.php?mod=viewthread&tid=46)
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