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feat(spmc): add helper to obtain a partitions FF-A version 

Add a helper function to obtain the FF-A version of a calling
partition. This is used to ensure that the SPMC maintains
backwards compatibility if the partition implements a lower
minor version for the same major version than the SPMC.

Signed-off-by: Marc Bonnici <marc.bonnici@arm.com>
Change-Id: I5b364a1e510a999bb0c4cacae28f23f8a42a1e3e
This commit is contained in:
Marc Bonnici 2021-12-09 11:32:30 +00:00
parent 9576fa93a2
commit c2b1434369
1 changed files with 12 additions and 0 deletions
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12
services/std_svc/spm/el3_spmc/spmc_main.c
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@ -555,6 +555,18 @@ static uint64_t ffa_version_handler(uint32_t smc_fid,
FFA_VERSION_MINOR));
}
/*******************************************************************************
* Helper function to obtain the FF-A version of the calling partition.
******************************************************************************/
uint32_t get_partition_ffa_version(bool secure_origin)
{
if (secure_origin) {
return spmc_get_current_sp_ctx()->ffa_version;
} else {
return spmc_get_hyp_ctx()->ffa_version;
}
}
/*******************************************************************************
* This function will parse the Secure Partition Manifest. From manifest, it
* will fetch details for preparing Secure partition image context and secure