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phi^2 + phi^-2 = 3
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Superseded by docs/W12_SESSION_REPORT.md on feat/jtag-bootstrap-tools. Board manifest + M1 HW PASS + E2E results + recovery log all consolidated there. |
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W12 board manifest
Плата 1 подтверждено жива после сессии 2026-07-06 → 2026-07-07:
Root cause diagnosed
FSBL паркуется в exception handler если POR bit в RESET_REASON очищен предыдущим JTAG-loaded U-Boot через clear_reset_cause. Recovery — физическое отключение питания на 5+ минут для восстановления POR bit.
QSPI driver caveat
Kernel MTD driver в stock image ожидает Micron N25Q256A, реально Winbond W25Q256. Расхождение на EAR register / 4-byte addressing. QSPI dump через /dev/mtdN невозможен без patch. Через U-Boot sf read — работает (generic SPI-NOR driver).
Инструкции для следующей сессии
Полностью в docs/W12_BOARD_MANIFEST.md. Ключевое:
Что НЕ делать
Draft — merge после ручного review, ничего срочного.
phi^2 + phi^-2 = 3