lowRISC / lowRISC/opentitan

[rom_ext] [Feature Request] OwnerUnlock operation should clear specified region of flash

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#27,040 0 comments 0 reactions 1 assignee View on GitHub

@cfrantz is already working on this.

Since Apr 23, 2025.

SW:ROM_EXT
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Description

### Description

When the owner unlock operation completes, ROM_EXT should clear a section of flash specified in the owner configuration. This flash erase should only happen once the unlock operation challenge is completed.

This allows a currently owner to ensure that any sensitive data (e.g. filesystem) is wiped before allowing the chip to be owned by another.

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