feat(intel): add RSU 'Max Retry' SiP SMC services

Add SiP SMC services to store/retrieve 'Max Retry' counter
for Remote System Update (RSU).

Signed-off-by: Chee Hong Ang <chee.hong.ang@intel.com>
Signed-off-by: Jit Loon Lim <jit.loon.lim@intel.com>
Change-Id: I17c1f0107ead64e6160954d26407f399003bcbd9
diff --git a/plat/intel/soc/common/include/socfpga_sip_svc.h b/plat/intel/soc/common/include/socfpga_sip_svc.h
index 63b28fb..664611f 100644
--- a/plat/intel/soc/common/include/socfpga_sip_svc.h
+++ b/plat/intel/soc/common/include/socfpga_sip_svc.h
@@ -39,6 +39,8 @@
 #define INTEL_SIP_SMC_RSU_RETRY_COUNTER			0xC200000F
 #define INTEL_SIP_SMC_RSU_DCMF_VERSION			0xC2000010
 #define INTEL_SIP_SMC_RSU_COPY_DCMF_VERSION		0xC2000011
+#define INTEL_SIP_SMC_RSU_MAX_RETRY			0xC2000012
+#define INTEL_SIP_SMC_RSU_COPY_MAX_RETRY		0xC2000013
 
 
 /* ECC */
diff --git a/plat/intel/soc/common/socfpga_sip_svc.c b/plat/intel/soc/common/socfpga_sip_svc.c
index 13ef809..daba7f5 100644
--- a/plat/intel/soc/common/socfpga_sip_svc.c
+++ b/plat/intel/soc/common/socfpga_sip_svc.c
@@ -28,6 +28,8 @@
 /* RSU DCMF version */
 static uint32_t rsu_dcmf_ver[4] = {0};
 
+/* RSU Max Retry */
+static uint32_t rsu_max_retry;
 
 /*  SiP Service UUID */
 DEFINE_SVC_UUID2(intl_svc_uid,
@@ -573,6 +575,13 @@
 		status = intel_rsu_copy_dcmf_version(x1, x2);
 		SMC_RET1(handle, status);
 
+	case INTEL_SIP_SMC_RSU_MAX_RETRY:
+		SMC_RET2(handle, INTEL_SIP_SMC_STATUS_OK, rsu_max_retry);
+
+	case INTEL_SIP_SMC_RSU_COPY_MAX_RETRY:
+		rsu_max_retry = x1;
+		SMC_RET1(handle, INTEL_SIP_SMC_STATUS_OK);
+
 	case INTEL_SIP_SMC_ECC_DBE:
 		status = intel_ecc_dbe_notification(x1);
 		SMC_RET1(handle, status);