Adding the AP/RSS interface for reading the ROTPK.
The read interface implements the psa_call:
psa_call(RSS_CRYPTO_HANDLE, PSA_IPC_CALL,
in_vec, IOVEC_LEN(in_vec),
out_vec, IOVEC_LEN(out_vec));
where the in_vec indicates which of the 3 ROTPKs we want,
and the out_vec stores the ROTPK value we get back from RSS.
Through this service, we will be able to read any of the 3
ROTPKs used on a CCA platform:
- ROTPK for CCA firmware (BL2, BL31, RMM).
- ROTPK for secure firmware.
- ROTPK for non-secure firmware.
Change-Id: I44c615588235cc797fdf38870b74b4c422be0a72
Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
With the current implementation of stripping the last null
byte from a string, there was no way to get the TF-M measured
boot test suite to pass. It would expect the size of the string
passed into extend measurement to be unaffected by the call.
This fix should allow passing a string with the null char
pre-stripped, allowing the tests to exclude the null char in
their test data and not have the length decremented.
Further, This patch adds an early exit if either the version
or sw_type is larger than its buffer. Without this check,
it may be possible to pass a length one more than the maximum,
and if the last element is a null, the length will be truncated
to fit. This is instead suppsed to return an error.
Signed-off-by: Jimmy Brisson <jimmy.brisson@arm.com>
Change-Id: I98e1bb53345574d4645513009883c6e7b6612531
Adding AP/RSS interface for retrieving and incrementing non-volatile
counters.
The read interface implements the psa_call:
psa_call(RSS_PLATFORM_SERVICE_HANDLE,
RSS_PLATFORM_API_ID_NV_READ,
in_vec, 1, out_vec, 1);
where the in_vec indicates which of the 3 counters we want, and the
out_vec stores the counter value we get back from RSS.
The increment interface implements the psa_call:
psa_call(RSS_PLATFORM_SERVICE_HANDLE,
RSS_PLATFORM_API_ID_NV_INCREMENT,
in_vec, 1, (psa_outvec *)NULL, 0);
where, again, in_vec indicates the counter to increment, and we don't
get any output parameter from RSS.
Through this service, we will be able to get/increment any of the 3 NV
counters used on a CCA platform:
- NV counter for CCA firmware (BL2, BL31, RMM).
- NV counter for secure firmware.
- NV counter for non-secure firmware.
Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
Signed-off-by: Raef Coles <raef.coles@arm.com>
Change-Id: I4c1c7f4837ebff30de16bb0ce7ecd416b70b1f62
Remove the null-terminator of the string-like data items
from the RSS measurement's metadata. The 'version' and
'sw_type' items have an associated length value which
should not include a null-terminator when storing the
measurement.
Change-Id: Ia91ace2fff8b6f75686dd2e1862475268300bbdb
Signed-off-by: David Vincze <david.vincze@arm.com>
This API is added for testing purposes. It makes possible to write test
cases that read measurements back after extending them, and compare
them to expected results.
Change-Id: Iec447d972fdd54a56ab933a065476e0f4d35a6fc
Signed-off-by: Mate Toth-Pal <mate.toth-pal@arm.com>
The attestation key derivation and platform attestation token
creation functionality is provided by the Delegated Attestation
partition in RSS.
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: I2d8c0e6589d11e7c81c698adf75ee2a993e3a0c6
Delegated attestation is a service provided by RSS to:
- Derive a delegated attestation key: Realm Attestation Key
- Query the platform attestation token
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: I3edf09fcbef24bca7c8a000ffac8c1ab64dfb812
When the measured boot service was upstreamed to TF-M, its static
handle was reallocated into the user partitions range. This change
updates the static handle here to make the service accessible.
Also removes the SIDs and Versions, since they are unused when a
service is accessed through a stateless handle, which encodes both
service ID and version. The attestation and measured boot services
only support access through their handles.
Signed-off-by: Jamie Fox <jamie.fox@arm.com>
Change-Id: I9d2ff1aad19470728289d574be3d5d11bdabeef4
Supports:
- Get Platform Attestation token from secure enclave
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: Icaeb7b4eaff08e10f449fbf752068de3ac7974bf
A secure enclave could provide an alternate
backend for measured boot. This API can be used
to store measurements in a secure enclave, which
provides the measured boot runtime service.
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: I2448e324e7ece6b318403c5937dfe7abea53d0f3
