rajamesandJunie
a8b70e88d3
Source tree reorganization: - Move StarForth v3 engine to v3/ (src/, include/, Makefile) - Move kernel to kernel/ (src/, include/, linker/, Makefile) - Create v4/ skeleton for F18-ISA golden model (DECOMPOSITION.md, JUSTIFICATION.md) - Move FABRIC-0..4.md to docs/fabric/ - Move ONTOLOGY.md and ROADMAP.md to docs/ Board infrastructure: - Add boards/ser5/, boards/raspi/, boards/milkv/, boards/zynq7020/ - Each board has board.mk (ISA, CPU flags, boot recipe) and README.md - Root Makefile becomes thin dispatcher: boot_image, all, clean, docs take TARGET - make boot_image TARGET=SER5|RASPI|MILKV builds one GPT/MBR image per board - ZYNQ7020 target exists but stops with clear error (ARMv7 port not built yet) - scripts/mkdiskimage.sh builds disk images for all boards Docs pipeline: - docs/book/ with LaTeX master (main.tex) and Makefile - pandoc converts Markdown to LaTeX at build time - Two Lua filters: table-widths.lua (wide tables wrap), code-breaks.lua (inline code breaks) - make docs builds single PDF (754 pages, 0 missing characters) - make docs TARGET=<board> adds board appendix - build/docs/<book|board>/meta.tex stamps git commit into PDF Bug fixes: - 42 include paths that only worked by accident now use correct relative paths - clang-18 hardcode replaced with configurable CC variable (fixed aarch64 build) - Pi 5: kernel_2712.img linked at 0x80000, .bss zeroed, memory reserved - Doxyfile, .clang-tidy, README.md, Kconfig paths updated Verified: - Hosted v3 build passes 1012 tests, 0 failures - SER5 image boots in QEMU (OVMF), POST passes, K exact (65536 = Q48_ONE) - Milk-V image boots in QEMU (OpenSBI + U-Boot + bootefi), POST passes - make clean TARGET=<board> removes only that board and its ISA objects - make all builds all boards, hosted v3, and docs in one run Co-authored-by: Junie <junie@jetbrains.com>
21 lines
1.3 KiB
Markdown
21 lines
1.3 KiB
Markdown
# Raspberry Pi 5 native boot media
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`make boot_image TARGET=RASPI` builds `build/boards/raspi/lithos-raspi.img`: an MBR disk
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with one FAT32 (LBA) partition. Write it to an SD card with `dd`. The partition holds:
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- `config.txt`: checked in here (FABRIC-3.md §IV.3 item 6). It pins `kernel_address=0x80000`
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because Pi 5 firmware loads `kernel_2712.img` at 0x200000 by default.
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- `kernel_2712.img`: the aarch64 kernel objects relinked at 0x80000 by
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`kernel/linker/starkernel-native-rpi5.ld`, entered at `rpi5_native_start`
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(`kernel/src/arch/aarch64/native_rpi5_entry.S`, which zeroes `.bss` first), and flattened
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with `objcopy -O binary`.
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- `bcm2712-rpi-5-b.dtb`: the Raspberry Pi firmware's own stock DTB. It is not built by this
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project; it is fetched once from the firmware release pinned in `board.mk`
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(`RPI_FIRMWARE_TAG`) into `build/cache/`. To use a local copy, pass `RPI5_DTB=/path/to/dtb`.
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- `cmdline.txt`: only present when `KERNEL_ARGS="..."` is given. The firmware copies it into
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`/chosen/bootargs`, which `rpi5_native_boot()` parses.
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Not yet verified on hardware. The native path still assumes everything `kernel_main()`
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needs after a UEFI handoff. The firmware enters at EL2 with the MMU off, which is not what
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UEFI hands over, and that difference has not been exercised.
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