intel: Fix mailbox config return status

Modify mailbox config return code to improve debugging.
Signed-off-by: Hadi Asyrafi <muhammad.hadi.asyrafi.abdul.halim@intel.com>
Change-Id: I0a223291f4c5296203b3295a679a5857a446c692

plat/intel/soc/common/include/socfpga_mailbox.h

@@ -79,14 +79,24 @@
 #define MBOX_WRONG_ID			-3
 
 /* Mailbox status */
-#define RECONFIG_STATUS_STATE		0
-#define RECONFIG_STATUS_PIN_STATUS	2
-#define RECONFIG_STATUS_SOFTFUNC_STATUS 3
-#define PIN_STATUS_NSTATUS		(U(1) << 31)
-#define SOFTFUNC_STATUS_SEU_ERROR	(1 << 3)
-#define SOFTFUNC_STATUS_INIT_DONE	(1 << 1)
-#define SOFTFUNC_STATUS_CONF_DONE	(1 << 0)
-#define MBOX_CFGSTAT_STATE_CONFIG	0x10000000
+#define RECONFIG_STATUS_STATE				0
+#define RECONFIG_STATUS_PIN_STATUS			2
+#define RECONFIG_STATUS_SOFTFUNC_STATUS			3
+#define PIN_STATUS_NSTATUS				(U(1) << 31)
+#define SOFTFUNC_STATUS_SEU_ERROR			(1 << 3)
+#define SOFTFUNC_STATUS_INIT_DONE			(1 << 1)
+#define SOFTFUNC_STATUS_CONF_DONE			(1 << 0)
+#define MBOX_CFGSTAT_STATE_IDLE				0x00000000
+#define MBOX_CFGSTAT_STATE_CONFIG			0x10000000
+#define MBOX_CFGSTAT_STATE_FAILACK			0x08000000
+#define MBOX_CFGSTAT_STATE_ERROR_INVALID		0xf0000001
+#define MBOX_CFGSTAT_STATE_ERROR_CORRUPT		0xf0000002
+#define MBOX_CFGSTAT_STATE_ERROR_AUTH			0xf0000003
+#define MBOX_CFGSTAT_STATE_ERROR_CORE_IO		0xf0000004
+#define MBOX_CFGSTAT_STATE_ERROR_HARDWARE		0xf0000005
+#define MBOX_CFGSTAT_STATE_ERROR_FAKE			0xf0000006
+#define MBOX_CFGSTAT_STATE_ERROR_BOOT_INFO		0xf0000007
+#define MBOX_CFGSTAT_STATE_ERROR_QSPI_ERROR		0xf0000008
 
 /* Mailbox reconfiguration commands */
 #define MBOX_CONFIG_STATUS	4

plat/intel/soc/common/soc/socfpga_mailbox.c

@@ -291,23 +291,23 @@ uint32_t intel_mailbox_get_config_status(uint32_t cmd)
 	status = mailbox_send_cmd(1, cmd, NULL, 0, 0, response);
 
 	if (status < 0)
-		return INTEL_SIP_SMC_STATUS_ERROR;
+		return status;
 
 	res = response[RECONFIG_STATUS_STATE];
 	if (res && res != MBOX_CFGSTAT_STATE_CONFIG)
-		return INTEL_SIP_SMC_STATUS_ERROR;
+		return res;
 
 	res = response[RECONFIG_STATUS_PIN_STATUS];
 	if (!(res & PIN_STATUS_NSTATUS))
-		return INTEL_SIP_SMC_STATUS_ERROR;
+		return MBOX_CFGSTAT_STATE_ERROR_HARDWARE;
 
 	res = response[RECONFIG_STATUS_SOFTFUNC_STATUS];
 	if (res & SOFTFUNC_STATUS_SEU_ERROR)
-		return INTEL_SIP_SMC_STATUS_ERROR;
+		return MBOX_CFGSTAT_STATE_ERROR_HARDWARE;
 
 	if ((res & SOFTFUNC_STATUS_CONF_DONE) &&
 		(res & SOFTFUNC_STATUS_INIT_DONE))
-		return INTEL_SIP_SMC_STATUS_OK;
+		return 0;
 
-	return INTEL_SIP_SMC_STATUS_BUSY;
+	return MBOX_CFGSTAT_STATE_CONFIG;
 }