)]}' { "commit": "5a939934a8a92dc1f58e99a3bb4e2ff1f701e838", "tree": "b8e6e1decc0dbd10b5bbb2ef64fe98a3872d4dc6", "parents": [ "efab607b8b738224c27b5e9e6410f8c74da43373" ], "author": { "name": "HiFiPhile", "email": "admin@hifiphile.com", "time": "Sun Oct 11 20:32:40 2026 +0200" }, "committer": { "name": "HiFiPhile", "email": "admin@hifiphile.com", "time": "Sun Oct 11 20:32:48 2026 +0200" }, "message": "lpc43: FLASH_BANK\u003dB links into flash bank B; hfp runs lpcxpresso43s67 from it\n\nThe hfp rig\u0027s lpcxpresso43s67 executes corrupted instruction fetches from flash bank A:\none bit of a fetched halfword reads 0 (push {r4-r9,lr} run as push {r4,r5,r7-r9,lr},\nmov r0,r6 run as mov r0,r2), giving the random HardFaults and silent stalls behind its\n1-4 failed examples per HIL run. A USB-free stress firmware reproduces it at ~1 error/s\nfrom bank A, and finds none in RAM or in bank B over millions of iterations; J-Link also\nfails verifying bank A sector 0. CI reflashes that sector for every example, well past\nthe 10k-cycle endurance.\n\n- hw/bsp/lpc43: FLASH_BANK\u003dA|B (CMake and Make, default A, byte-identical to before).\n The board linker scripts place code through REGION_ALIAS(\"FlashCode\") from\n linker/flash_bank_\u003cA|B\u003e/lpc43_flash_bank.ld (GNU ld and lld via -L); IAR gets\n linker/lpc43xx_iflash_bank_b.icf.\n- tools/lpc_vector_checksum.py patches the boot checksum (vector word 7) into bank-B\n images: J-Link patches it at bank A only. It refuses an address that holds no vector\n table. Run as a CMake POST_BUILD step and the new make POST_LINK hook;\n .DELETE_ON_ERROR keeps a failed hook from leaving an unpatched ELF up to date.\n- The boot ROM boots bank B only while bank A holds no valid image (UM10503 5.3.1), and\n any bank-A load makes it valid again. The jlink flasher takes an opt-in roster\n \"erase\" list of ranges erased before every load, and refuses an image that loads\n into one (a stale bank-A build would re-validate the bank).\n- test/hil/hfp.json: lpcxpresso43s67 builds with FLASH_BANK\u003dB and erases bank A\n sector 0 before each load.\n- tools/change_impact.py rule 16c: a tools/ script a family.cmake runs selects that\n family\u0027s builds and boards.\n\nVerified on the rig: hfp suite 14/14 with usbtest 30/30 on gcc (5 runs) and IAR bank-B\nbuilds, including the run after a bank-A image re-validated bank A; clang/lld bank-B\nboard_test and usbtest build and boot; all 43 examples build for gcc and IAR with\nFLASH_BANK\u003dB; code size for the default build 43/43 unchanged.\n", "tree_diff": [ { "type": "modify", "old_id": "fdff4f84eab380bfe5003734e3d3840745ddddaf", "old_mode": 33188, "old_path": ".pre-commit-config.yaml", "new_id": "0020a4fbcd0ddf28c8a0633fafc99efddea92c0a", "new_mode": 33188, "new_path": 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