link: Hack to add ACPI SSDT containing a TPM device
The ACPI DSDT on Link is missing the TPM Device on the LPC bus.
This means that the TPM driver does not automatically load and
must be forced with a module parameter.
This change will find the existing SSDT and add a new SSDT after
it and then add that new table to the RDST/XSDT so it can be found.
BUG=chromium-os:39806
BRANCH=link
TEST=manual: Boot Fedora with the 3.9-rc2 kernel and see that the
TPM driver modules are loaded and were able to detect the TPM.
Also read out the new SSDT and verify that the table is correct
and matches the table that is in the source:
$ sudo cat /sys/firmware/acpi/tables/SSDT2 > /tmp/SSDT2
$ iasl -d /tmp/SSDT2
$ cat /tmp/SSDT2.dsl # compare the output to the source
Original-Change-Id: I049a4975fdd2265864e14d482484c7eb9191bcbd
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/45261
Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
(cherry picked from commit 5baf4b63529f0f7b13e19609c4173e3f61231e84)
Change-Id: I7ba286e92b6456a254a3e8978b1ebd7c98e1e20a
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/66565
4 files changed
