what is FSP?

[chukp79]

What is FSP? What's the difference with GSP? Is it also a hardware chip in GPU card? In RmInitAdapter why does it call kfspSendBootCommands_HAL before start GSP?

[steven-bellock]

See also https://forums.developer.nvidia.com/t/are-the-on-die-root-of-trust-and-sec2-security-microcontroller-physically-the-same-thing/307330.

FSP and GSP are both RISC-V microcontrollers and are located within the Hopper and Blackwell chips. FSP is the Foundation Security Processor and is the first microcontroller to boot. Its firmware is stored on the device in FLASH memory. It authenticates and authorizes the loading of firmware onto GSP, and establishes a chain of trust from FSP to all the other microcontrollers on the chip.

[chukp79]

I understand it now. Thanks for your reply!