SPM: Allow secondary CPUs to use the Secure Partition
The Secure Partition should be able to be used from any CPU, not just
the lead one. This patch point the secure contexts of all secondary
CPUs to the same one used by the lead CPU for the Secure Partition. This
way, they can also use it.
In order to prevent more than one CPU from using the Secure Partition at
the same time, a lock has been added.
Change-Id: Ica76373127c3626498b06c558a4874ce72201ff7
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/services/std_svc/spm/spm_private.h b/services/std_svc/spm/spm_private.h
index 2fc46c8..1d16b45 100644
--- a/services/std_svc/spm/spm_private.h
+++ b/services/std_svc/spm/spm_private.h
@@ -32,6 +32,7 @@
#ifndef __ASSEMBLY__
+#include <spinlock.h>
#include <stdint.h>
#include <xlat_tables_v2.h>
@@ -44,6 +45,7 @@
uint64_t c_rt_ctx;
cpu_context_t cpu_ctx;
unsigned int sp_init_in_progress;
+ spinlock_t lock;
} secure_partition_context_t;
uint64_t spm_secure_partition_enter(uint64_t *c_rt_ctx);