TPM code updater
This commit introduces a TPM code updater that currently supports
reading the firmware version for both Infineon and Nuvoton TPM 2.0.
Support for firmware updates will be introduced in a future patch.
The updater's configuration are managed by the EM [1].
[1] https://gerrit.openbmc.org/c/openbmc/entity-manager/+/82416
Tested on Yosemite5 with the following steps:
1. Display the fw inventory:
```
curl --silent $creds https://$bmc/redfish/v1/UpdateService/FirmwareInventory
{
"@odata.id": "/redfish/v1/UpdateService/FirmwareInventory",
"@odata.type": "#SoftwareInventoryCollection.SoftwareInventoryCollection",
"Members": [
{...},
{
"@odata.id": "/redfish/v1/UpdateService/FirmwareInventory/Yosemite5_TPM_4945"
},
{...}
],
"Members@odata.count": 4,
"Name": "Software Inventory Collection"
}
```
2. Query TPM version:
```
curl --silent $creds https://$bmc/redfish/v1/UpdateService/FirmwareInventory/Yosemite5_TPM_4945
{
"@odata.id": "/redfish/v1/UpdateService/FirmwareInventory/Yosemite5_TPM_4945",
"@odata.type": "#SoftwareInventory.v1_1_0.SoftwareInventory",
"Description": "Unknown image",
"Id": "Yosemite5_TPM_4945",
"Name": "Software Inventory",
"Status": {
"Health": "Warning",
"HealthRollup": "OK",
"State": "Disabled"
},
"Updateable": false,
"Version": "15.23"
}
```
Change-Id: I42568242356d55fe005ba1f41ddf8aaf9f682fc8
Signed-off-by: Kevin Tung <kevin.tung.openbmc@gmail.com>
diff --git a/tpm/tpm2/tpm2.hpp b/tpm/tpm2/tpm2.hpp
new file mode 100644
index 0000000..cf3c097
--- /dev/null
+++ b/tpm/tpm2/tpm2.hpp
@@ -0,0 +1,28 @@
+#pragma once
+
+#include "tpm/tpm_device.hpp"
+
+#include <string_view>
+
+class TPM2Interface : public TPMInterface
+{
+ public:
+ TPM2Interface(sdbusplus::async::context& ctx, uint8_t tpmIndex) :
+ TPMInterface(ctx, tpmIndex)
+ {}
+
+ bool isUpdateSupported() const final
+ {
+ // Currently, we do not support TPM2 firmware updates
+ return false;
+ }
+
+ sdbusplus::async::task<bool> updateFirmware(const uint8_t* image,
+ size_t image_size) final;
+
+ sdbusplus::async::task<bool> getVersion(std::string& version) final;
+
+ private:
+ sdbusplus::async::task<bool> getProperty(std::string_view property,
+ uint32_t& value);
+};