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Contents

Firmware Security Version

API

• Functions

  • zesFirmwareGetSecurityVersionExp

  • zesFirmwareSetSecurityVersionExp

• Enumerations

  • zes_firmware_security_exp_version_t

Security Version

This feature helps to prevent flashing of older firmware that have certain security vulnerabilities by using an hardware enforced anti-rollback scheme. User can flash a firmware image and sets its version as the security version number (SVN). Images with lower SVN cannot be applied to device with higher SVN for security considerations.

// Fetch current security version from the fuses
char* version = allocate(version_size);
zesFirmwareGetSecurityVersionExp(hFirmware, version);

// Set security version
zesFirmwareSetSecurityVersionExp(hFirmware);