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# 12.2 Customer Notification (CN) Support

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Libero SoC v2021.1 includes changes that address certain important issues.

## 12.2.1 Disabling SmartDebug Access to sNVM in Libero SoC Debug Policy Settings

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For PolarFire, RT PolarFire, and PolarFire SoC devices, Libero SoC v2021.1 fixes an issue where the user setting to disable SmartDebug access to read the sNVM without the user passkey or debug passkey did not take effect. The issue existed for PolarFire devices since v12.0 and PolarFire SoC devices since v12.5. To enforce this debug policy, use v2021.1 to re-run the "Configure Security" step in Libero SoC, re-confirm the user/debug passkey, make sure Disable sNVM is checked, regenerate the programming bitstream and reprogram the device with the updated security settings.

For more information, see www.microsemi.com/company/quality/product-notifications/cn/asic-soc-fpga.

Figure 12-1.Disable sNVM Check Box

Rev: 2025.2

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