[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH v3 4/4] tpm: add a fake ACPI memory clear interface
|
From: |
Marc-André Lureau |
|
Subject: |
[Qemu-devel] [PATCH v3 4/4] tpm: add a fake ACPI memory clear interface |
|
Date: |
Tue, 15 May 2018 14:14:33 +0200 |
This allows to pass the last failing test from the Windows HLK TPM 2.0
TCG PPI 1.3 tests.
The interface is described in the "TCG Platform Reset Attack
Mitigation Specification", chapter 6 "ACPI _DSM Function". Whether or
not we should have a real implementation remains an open question to me.
Signed-off-by: Marc-André Lureau <address@hidden>
---
hw/i386/acpi-build.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 95be4f0710..392a1e50bd 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2072,6 +2072,15 @@ build_tpm_ppi(Aml *dev)
aml_append(ifctx, aml_return(aml_buffer(1, zerobyte)));
}
aml_append(method, ifctx);
+
+ /* dummy MOR Memory Clear for the sake of WLK PPI test */
+ ifctx = aml_if(
+ aml_equal(aml_arg(0),
+ aml_touuid("376054ED-CC13-4675-901C-4756D7F2D45D")));
+ {
+ aml_append(ifctx, aml_return(aml_int(0)));
+ }
+ aml_append(method, ifctx);
}
aml_append(dev, method);
}
--
2.17.0.253.g3dd125b46d