intel/common/block/sgx: Refactor SGX common code

To correct the SGX init sequence; PRMRR on all cores first
needs to be set, then follow the SGX init sequence. This
patch would refactor the common SGX code (and add needed
checks in the init sequence) so that SOC specific code can
call SGX init in correct order.

Change-Id: Ic2fb00edbf6e98de17c12145c6f38eacd99399ad
Signed-off-by: Pratik Prajapati <pratikkumar.v.prajapati@intel.com>
Reviewed-on: https://review.coreboot.org/21006
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/soc/intel/common/block/include/intelblocks/sgx.h b/src/soc/intel/common/block/include/intelblocks/sgx.h
index bdc35540dc..efcad6164b 100644
--- a/src/soc/intel/common/block/include/intelblocks/sgx.h
+++ b/src/soc/intel/common/block/include/intelblocks/sgx.h
@@ -23,6 +23,13 @@
 void cpu_lock_sgx_memory(void);
 
 /*
+ * Configure core PRMRR.
+ * PRMRR needs to configured first on all cores and then
+ * call sgx_configure() for all cores to init SGX.
+ */
+void prmrr_core_configure(void);
+
+/*
  * Configure SGX.
  */
 void sgx_configure(void);