You can hop over to Tianocore.org and get a lot of questions answered there. Grab the EFI spec (not sure if they have UEFI 2.0 up there yet or not), the Platform Innovation Framework specs from Intel for Tiano, or the Tiano EDK.
UEFI does not make TPM any different than it would be with BIOS except the code can be in C. Because there really is no standards for BIOS, it can do whatever it wants, so long as you can boot your OS.
But say I had an EFI TPM driver in the firmware, and my OS boot loader was EFI aware. On boot, the OS could grab the runtime services table, get some handles for the TPM driver, relocate it to the OS memory space, and call its functions like HYPOTHETICAL_EFI_TPM_DRIVER.Stop().
EFI offers a lot of advantages that will not become apparent until people start writing boot loaders specifically for it, or taking advantage of what it can offer in the preboot space. If you have access to an Intel made LGA771 server board, boot to the EFI shell and fool around for a while. See what you think.
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You can hop over to Tianocore.org and get a lot of questions answered there. Grab the EFI spec (not sure if they have UEFI 2.0 up there yet or not), the Platform Innovation Framework specs from Intel for Tiano, or the Tiano EDK. UEFI does not make TPM any different than it would be with BIOS except the code can be in C. Because there really is no standards for BIOS, it can do whatever it wants, so long as you can boot your OS. But say I had an EFI TPM driver in the firmware, and my OS boot loader was EFI aware. On boot, the OS could grab the runtime services table, get some handles for the TPM driver, relocate it to the OS memory space, and call its functions like HYPOTHETICAL_EFI_TPM_DRIVER.Stop(). EFI offers a lot of advantages that will not become apparent until people start writing boot loaders specifically for it, or taking advantage of what it can offer in the preboot space. If you have access to an Intel made LGA771 server board, boot to the EFI shell and fool around for a while. See what you think.