tree 0662b588a5675bcef86952ee7b5b163dd87e55a8
parent 7322e98162e0f9d6c9d2aa15bdf938229e0f96b2
author Yi Chou <yich@google.com> 1678700445 +0800
committer Chromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com> 1683695394 +0000

arm64: Support 6 arguments for SMC

According to the ARM SMC Calling Convention (ARM DEN 0028A):
SMC64: A 64-bit interface which can be used only by 64-bit
client code and which passes up to six 64-bit arguments.
And arguments are passed in registers X0-X6.

BUG=b:249552664
TEST=Test with the cros_widevine SMC
BRANCH=None

Change-Id: If87c22052065736f195bd6af1a430dd6d6aef01e
Signed-off-by: Yi Chou <yich@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/depthcharge/+/4333402
Reviewed-by: Julius Werner <jwerner@chromium.org>