feat(spmc): enable checking of execution ctx count
This is a mandatory entry in an SP's manifest however
currently an S-EL1 partition running under the EL3 SPMC
must have the same amount of execution contexts as
physical cores therefore just check the entry matches
this value.
Signed-off-by: Marc Bonnici <marc.bonnici@arm.com>
Change-Id: I4c2a85ccde7a7bb9b1232cf6389a8c532cbf3d41
diff --git a/services/std_svc/spm/el3_spmc/spmc_main.c b/services/std_svc/spm/el3_spmc/spmc_main.c
index 29d7d7b..35def25 100644
--- a/services/std_svc/spm/el3_spmc/spmc_main.c
+++ b/services/std_svc/spm/el3_spmc/spmc_main.c
@@ -544,6 +544,25 @@
sp->execution_state = config_32;
+ ret = fdt_read_uint32(sp_manifest, node,
+ "execution-ctx-count", &config_32);
+
+ if (ret != 0) {
+ ERROR("Missing SP Execution Context Count.\n");
+ return ret;
+ }
+
+ /*
+ * Ensure this field is set correctly in the manifest however
+ * since this is currently a hardcoded value for S-EL1 partitions
+ * we don't need to save it here, just validate.
+ */
+ if (config_32 != PLATFORM_CORE_COUNT) {
+ ERROR("SP Execution Context Count (%u) must be %u.\n",
+ config_32, PLATFORM_CORE_COUNT);
+ return -EINVAL;
+ }
+
/*
* Look for the optional fields that are expected to be present in
* an SP manifest.