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feat(spmc): support FFA_ID_GET ABI

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Allow for a partition to retrieve its own partition ID.

Signed-off-by: Marc Bonnici <marc.bonnici@arm.com>
Change-Id: I1a19ac30b86736d818673c239b2f8fd2d6128c06
This commit is contained in:
Marc Bonnici 2021-11-24 15:40:00 +00:00
parent 55a296387b
commit d5fe92350c
1 changed files with 24 additions and 0 deletions
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24
services/std_svc/spm/el3_spmc/spmc_main.c
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@ -1008,6 +1008,7 @@ static uint64_t ffa_features_handler(uint32_t smc_fid,
/* Supported features from both worlds. */
case FFA_ERROR:
case FFA_SUCCESS_SMC32:
case FFA_ID_GET:
case FFA_FEATURES:
case FFA_VERSION:
case FFA_MSG_SEND_DIRECT_REQ_SMC32:
@ -1046,6 +1047,25 @@ static uint64_t ffa_features_handler(uint32_t smc_fid,
}
}
static uint64_t ffa_id_get_handler(uint32_t smc_fid,
bool secure_origin,
uint64_t x1,
uint64_t x2,
uint64_t x3,
uint64_t x4,
void *cookie,
void *handle,
uint64_t flags)
{
if (secure_origin) {
SMC_RET3(handle, FFA_SUCCESS_SMC32, 0x0,
spmc_get_current_sp_ctx()->sp_id);
} else {
SMC_RET3(handle, FFA_SUCCESS_SMC32, 0x0,
spmc_get_hyp_ctx()->ns_ep_id);
}
}
/*******************************************************************************
* This function will parse the Secure Partition Manifest. From manifest, it
* will fetch details for preparing Secure partition image context and secure
@ -1442,6 +1462,10 @@ uint64_t spmc_smc_handler(uint32_t smc_fid,
return ffa_version_handler(smc_fid, secure_origin, x1, x2, x3,
x4, cookie, handle, flags);
case FFA_ID_GET:
return ffa_id_get_handler(smc_fid, secure_origin, x1, x2, x3,
x4, cookie, handle, flags);
case FFA_FEATURES:
return ffa_features_handler(smc_fid, secure_origin, x1, x2, x3,
x4, cookie, handle, flags);