On Tue, May 26, 2015 at 03:48:34PM -0400, Stefan Berger wrote: > This patch implements the specification found here: > > http://www.trustedcomputinggroup.org/resources/tcg_physical_presence_interface_specification > > It adds the necessary BIOS code so that for example an administrator can send > messages from the OS to the BIOS for the BIOS to change the state of the TPM > upon reboot. With the help of this interface, an administrator does not have > to manually interact with the BIOS. > > As an example, on Linux the root use can send an opcode to the BIOS through > the > TPM's sysfs entries following the opcodes listed in table 2 of the above > specs. To for example disable and deactivate the TPM, the root user would > send opcode '7' to the BIOS: > > #> cd /sys/devices/pnp0/00:0?/ppi > > #> echo 7 > request > > #> reboot
Given that this patch is dependent on upstream QEMU changes, I think it needs to wait until the upstream support is committed. -Kevin _______________________________________________ SeaBIOS mailing list [email protected] http://www.seabios.org/mailman/listinfo/seabios
