soc/intel/common/block/cse: Refactor cse_request_global_reset() function

List of changes:
1. Check if CSE is enabled from devicetree.cb
2. Create helper function cse_request_reset()
3. Modify caller function argument cse_request_global_reset()

Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Change-Id: I3668b473bec8d51f847908d11e2e25c485ec7a97
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45341
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/alderlake/reset.c

@@ -11,7 +11,7 @@
 void do_global_reset(void)
 {
 	/* Ask CSE to do the global reset */
-	if (cse_request_global_reset(GLOBAL_RESET))
+	if (cse_request_global_reset())
 		return;
 
 	/* global reset if CSE fail to reset */

src/soc/intel/cannonlake/reset.c

@@ -11,7 +11,7 @@
 void do_global_reset(void)
 {
 	/* Ask CSE to do the global reset */
-	if (cse_request_global_reset(GLOBAL_RESET))
+	if (cse_request_global_reset())
 		return;
 
 	/* global reset if CSE fail to reset */

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

@@ -616,9 +616,10 @@ static bool cse_is_global_reset_allowed(void)
 }
 
 /*
- * Sends GLOBAL_RESET_REQ cmd to CSE.The reset type can be GLOBAL_RESET/CSE_RESET_ONLY.
+ * Sends GLOBAL_RESET_REQ cmd to CSE with reset type GLOBAL_RESET.
+ * Returns 0 on failure and 1 on success.
  */
-int cse_request_global_reset(enum rst_req_type rst_type)
+static int cse_request_reset(enum rst_req_type rst_type)
 {
 	int status;
 	struct mkhi_hdr reply;
@@ -644,7 +645,7 @@ int cse_request_global_reset(enum rst_req_type rst_type)
 		return 0;
 	}
 
-	if (!cse_is_global_reset_allowed()) {
+	if (!cse_is_global_reset_allowed() || !is_cse_enabled()) {
 		printk(BIOS_ERR, "HECI: CSE does not meet required prerequisites\n");
 		return 0;
 	}
@@ -663,6 +664,11 @@ int cse_request_global_reset(enum rst_req_type rst_type)
 	return status;
 }
 
+int cse_request_global_reset(void)
+{
+	return cse_request_reset(GLOBAL_RESET);
+}
+
 static bool cse_is_hmrfpo_enable_allowed(void)
 {
 	/*

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

@@ -121,12 +121,10 @@ enum rst_req_type {
 };
 
 /*
- * Sends GLOBAL_RESET_REQ cmd to CSE.
- * The reset type can be one of the above defined reset type.
+ * Sends GLOBAL_RESET_REQ cmd to CSE with reset type GLOBAL_RESET.
  * Returns 0 on failure and 1 on success.
  */
-int cse_request_global_reset(enum rst_req_type rst_type);
-
+int cse_request_global_reset(void);
 /*
  * Sends HMRFPO_ENABLE command.
  * HMRFPO - Host ME Region Flash Protection Override.

src/soc/intel/elkhartlake/reset.c

@@ -11,7 +11,7 @@
 void do_global_reset(void)
 {
 	/* Ask CSE to do the global reset */
-	if (cse_request_global_reset(GLOBAL_RESET))
+	if (cse_request_global_reset())
 		return;
 
 	/* global reset if CSE fail to reset */

src/soc/intel/icelake/reset.c

@@ -11,7 +11,7 @@
 void do_global_reset(void)
 {
 	/* Ask CSE to do the global reset */
-	if (cse_request_global_reset(GLOBAL_RESET))
+	if (cse_request_global_reset())
 		return;
 
 	/* global reset if CSE fail to reset */

src/soc/intel/jasperlake/reset.c

@@ -11,7 +11,7 @@
 void do_global_reset(void)
 {
 	/* Ask CSE to do the global reset */
-	if (cse_request_global_reset(GLOBAL_RESET))
+	if (cse_request_global_reset())
 		return;
 
 	/* global reset if CSE fail to reset */

src/soc/intel/skylake/me.c

@@ -353,7 +353,7 @@ int send_global_reset(void)
 		goto ret;
 
 	/* ME should be in Normal Mode for this command */
-	status = cse_request_global_reset(GLOBAL_RESET);
+	status = cse_request_global_reset();
 ret:
 	return status;
 }

src/soc/intel/tigerlake/reset.c

@@ -11,7 +11,7 @@
 void do_global_reset(void)
 {
 	/* Ask CSE to do the global reset */
-	if (cse_request_global_reset(GLOBAL_RESET))
+	if (cse_request_global_reset())
 		return;
 
 	/* global reset if CSE fail to reset */