QSPI XIP Flash Debug

Overview

Use this skill to debug QSPI/OSPI flash by separating electrical bring-up, command mode access, memory-mapped mode, cache policy, linker placement, and boot flow. XIP failures often come from timing and memory attributes.

When To Use

Use this skill when:

• The user is bringing up external NOR flash over QSPI, OSPI, OctoSPI, FlexSPI, SPIFI, or a similar controller.
• The issue involves JEDEC ID reads, erase/program failures, memory-mapped mode, XIP, boot from external flash, random hard faults, or cache corruption.
• The firmware uses external flash for code, assets, filesystem, OTA slots, or mapped resources.