intel/common/sgx: Use intel_mp_current_microcode() to get microcode pointer

Get microcode patch pointer from intel_mp_current_microcode() api
of mp_init and change sgx_configure function signature to drop
microcode_patch param.

Change-Id: I9196c30ec7ea52d7184a96b33835def197e2c799
Signed-off-by: Pratik Prajapati <pratikkumar.v.prajapati@intel.com>
Reviewed-on: https://review.coreboot.org/21009
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/common/block/include/intelblocks/sgx.h

@@ -25,6 +25,6 @@ void cpu_lock_sgx_memory(void);
 /*
  * Configure SGX.
  */
-void sgx_configure(const void *microcode_patch);
+void sgx_configure(void);
 
 #endif	/* SOC_INTEL_COMMON_BLOCK_SGX_H */

src/soc/intel/common/block/sgx/sgx.c

@@ -13,11 +13,13 @@
  * GNU General Public License for more details.
  */
 
+#include <assert.h>
 #include <console/console.h>
 #include <chip.h>
 #include <cpu/x86/msr.h>
 #include <cpu/x86/mtrr.h>
 #include <cpu/intel/microcode.h>
+#include <intelblocks/mp_init.h>
 #include <intelblocks/sgx.h>
 #include <soc/cpu.h>
 #include <soc/msr.h>
@@ -125,10 +127,12 @@ static void activate_sgx(void)
 	}
 }
 
-void sgx_configure(const void *microcode_patch)
+void sgx_configure(void)
 {
 	device_t dev = SA_DEV_ROOT;
+	assert(dev != NULL);
 	config_t *conf = dev->chip_info;
+	const void *microcode_patch = intel_mp_current_microcode();
 
 	if (!conf->sgx_enable || !is_sgx_supported())
 		return;

src/soc/intel/skylake/cpu.c

@@ -438,7 +438,7 @@ void soc_core_init(device_t cpu, const void *microcode)
 	enable_turbo();
 
 	/* Configure SGX */
-	sgx_configure(microcode);
+	sgx_configure();
 }
 
 static int adjust_apic_id(int index, int apic_id)
@@ -505,7 +505,7 @@ void soc_init_cpus(struct bus *cpu_bus, const void *microcode)
 	 * here to get SGX enabled on BSP. This behavior needs to root-caused
 	 * and we shall not have this redundant call.
 	 */
-	sgx_configure(microcode);
+	sgx_configure();
 }
 
 int soc_skip_ucode_update(u32 current_patch_id, u32 new_patch_id)