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feat(config): enable 8250/16550 serial for HV backend #6

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Merged
AprilNEA merged 2 commits into from
Apr 7, 2026
Merged

feat(config): enable 8250/16550 serial for HV backend #6

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ee821e0
feat(config): enable 8250/16550 serial for Hypervisor.framework backend
AprilNEA Apr 7, 2026
f6e4bd7
docs: update section heading to cover both VZ and HV backends
AprilNEA Apr 7, 2026
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6 changes: 4 additions & 2 deletions CLAUDE.md
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Expand Up @@ -58,15 +58,17 @@ arcbox-kernel/

## Kernel Configuration

Key configs for macOS Virtualization.framework compatibility:
Key configs for macOS VM backends (VZ = Virtualization.framework, HV = Hypervisor.framework):

```
# Required for VirtioFS on macOS
CONFIG_VIRTIO_IOMMU=y

# PL011 serial console (Virtualization.framework)
# Serial console: PL011 (VZ backend) + 8250/16550 (HV backend)
CONFIG_SERIAL_AMBA_PL011=y
CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y

# GPIO support (Virtualization.framework)
CONFIG_GPIOLIB=y
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10 changes: 8 additions & 2 deletions configs/arcbox-arm64.config
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Expand Up @@ -243,11 +243,17 @@ CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_TTY=y
CONFIG_VT=n
CONFIG_SERIAL_8250=n

# PL011 serial console (for Virtualization.framework)
# Serial console: PL011 for VZ backend, 8250/16550 for HV backend.
# Both are built-in so the same kernel binary works with either backend.
CONFIG_SERIAL_AMBA_PL011=y
CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_8250_DW=n
CONFIG_SERIAL_OF_PLATFORM=y

# GPIO support (for Virtualization.framework)
CONFIG_GPIOLIB=y
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