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docs: PIC64-HPSC QEMU guide for arm64 hosts - #73

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Closes #72.

Adds docs/building-pic64hpsc-arm64.md covering what is needed on an aarch64 host: QEMU and dev_cfg_pack built from source, u-boot-tools, dropping the x86-only p64h-ftdi-jmb wheel, and the Buildroot-layout rootfs shim that SDK 2.3.0 requires. Links it from the sidebar and from the x86 guide.

Verified with P64H SDK p64h-v2.3.0 on Ubuntu 24.04 aarch64: SGL boots to the login prompt on the microchip-hpsc-soc QEMU model.

The P64H SDK ships x86_64-only binaries. Document the extra steps to
build QEMU and dev_cfg_pack natively, the rootfs shim layout required
by SDK 2.3.0, and the expected boot output. Verified booting SGL to the
login prompt on an Ubuntu 24.04 aarch64 VM.

Closes space-grade-linux#72

Signed-off-by: Alexey Simonov <alexey.simonov@gmail.com>
@asimonov
asimonov force-pushed the docs/pic64hpsc-arm64 branch from 02b3dc1 to bed7954 Compare October 24, 2026 10:35

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PIC64-HPSC QEMU guide does not work on aarch64 hosts

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