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Merged
iamvirul merged 4 commits into from
Jan 26, 2026
Merged

feat(boot): implement UEFI bootloader integration #15

iamvirul merged 4 commits into from
Jan 26, 2026

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@iamvirul iamvirul commented Jan 26, 2026

Summary

  • Implement UEFI bootloader entry point with boot services initialization
  • Add memory map retrieval and parsing from UEFI firmware
  • Detect ACPI tables (RSDP) and GOP framebuffer information
  • Create BootInfo structure for kernel handoff
  • Add QEMU run script with OVMF support
  • Add GitHub Actions CI workflow for bootloader builds

Changes

Bootloader (boot/)

  • main.rs: UEFI entry point (efi_main) with initialization flow
  • memory.rs: Memory map parsing and region classification
  • boot_info.rs: BootInfo structure for kernel handoff
  • console.rs: Console output support for boot messages
  • .cargo/config.toml: Build configuration for x86_64-unknown-uefi target

CI/CD

  • bootloader.yml: New workflow for building and testing bootloader
  • ci.yml: Updated to include bootloader in workspace checks

Scripts

  • run-qemu.sh: QEMU runner with OVMF support for testing

Tests

  • boot_tests.rs: Unit tests for bootloader components

Test plan

  • Bootloader compiles for x86_64-unknown-uefi target
  • CI workflow validates build
  • Manual testing in QEMU with OVMF (requires local setup)

Closes #2

@iamvirul
feat(boot): implement UEFI bootloader integration
64bb7ba 
Implement UEFI bootloader support for Ferrous Kernel (Issue #2):

- Add UEFI entry point (efi_main) with boot services initialization
- Implement memory map retrieval and parsing from UEFI
- Add console output support for boot messages
- Detect ACPI tables (RSDP) location
- Detect GOP framebuffer information
- Create BootInfo structure for kernel handoff
- Add QEMU run script with OVMF support

The bootloader initializes UEFI services, retrieves system information
(memory map, ACPI, framebuffer), and prepares for kernel handoff.
Kernel loading will be implemented in a subsequent phase.

Closes #2
@iamvirul
fix(boot): update uefi crate API usage for v0.33
0d65080 
- Fix uefi crate API to use callback functions (with_stdout, with_config_table)
- Add global_allocator feature for memory allocation support
- Import MemoryMap trait for memory map iteration
- Update console, memory, and main modules for new API
@iamvirul
test(boot): add new test case for bootloader
1fab5f0
@iamvirul
style(boot): fix formatting in main.rs
74eb106 
- Reorder imports alphabetically (uefi::boot before uefi::prelude)
- Break long writeln! calls to meet line length requirements
@iamvirul iamvirul merged commit 006a437 into main Jan 26, 2026
20 checks passed
@iamvirul iamvirul self-assigned this Jan 26, 2026
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[TASK] UEFI Bootloader Integration

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@iamvirul