Robert Allan JamesandClaude Sonnet 5
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Researched against the official raspberrypi.com config.txt reference and one real, working Pi 5 bare-metal project's own checked-in config.txt (leopoldch/BatMetal), not assumed from general Pi knowledge: - kernel=kernel_2712.img, os_check=0, device_tree=bcm2712-rpi-5-b.dtb - enable_uart=1 added (correction to the item's original text): costs nothing when unused, and is the only diagnostic channel that would survive a framebuffer failure on the untested mailbox path (rpi5_native_boot.c). - arm_64bit=1 dropped (correction to the item's original text): confirmed inert on Pi 5 by official docs. - dtparam=pciex1 researched, deliberately omitted with rationale recorded -- community-reported only, not needed until item 5's re-scoped RP1/PCIe work. - os_check=0 vs. BatMetal's own config (which omits it) recorded as an open, unresolved discrepancy rather than silently picked. boot_media/rpi5/README.md notes the one remaining gap this exposes: kernel_2712.img names a file nothing currently builds (item 1's separate-image build target is still outstanding future work). Doc-and-config only, no compiled code changed. Three-arch QEMU acceptance (amd64/aarch64/riscv64, in order) run to confirm non-regression only. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019YcT3H2PQeyujrzjqS3Var
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