defconfig: arm64: msm: Enable MSM_DEBUG_LAR_UNLOCK for QCS405

Enable MSM_DEBUG_LAR_UNLOCK for QCS405. This allows unlocking
Core Debug lock to allow capture of upper 32 bits of program
counter at the time of system dump.

Change-Id: Idb1e8550f63763960d9ac0fdde41a09fbed4e513
Signed-off-by: Archit Saxena <archsaxe@codeaurora.org>

arch/arm64/configs/vendor/qcs405_defconfig

@@ -412,6 +412,7 @@ CONFIG_MSM_SPM=y
 CONFIG_MSM_L2_SPM=y
 CONFIG_QCOM_SCM=y
 CONFIG_QCOM_MEMORY_DUMP_V2=y
+CONFIG_MSM_DEBUG_LAR_UNLOCK=y
 CONFIG_QCOM_WATCHDOG_V2=y
 CONFIG_QCOM_FORCE_WDOG_BITE_ON_PANIC=y
 CONFIG_QCOM_WDOG_IPI_ENABLE=y

drivers/soc/qcom/Kconfig

@@ -226,6 +226,15 @@ config QCOM_MEMORY_DUMP_V2
 	  of deadlocks or cpu hangs these dump regions are captured to
 	  give a snapshot of the system at the time of the crash.
 
+config MSM_DEBUG_LAR_UNLOCK
+	bool "MSM Debug LAR Unlock Support"
+	depends on QCOM_MEMORY_DUMP_V2
+	help
+	  This allows unlocking Core Debug lock to allow capture
+	  of upper 32 bits of program counter at the time of
+	  system crash. This is useful in getting correct crash
+	  location.
+
 config QCOM_WATCHDOG_V2
 	bool "Qualcomm Watchdog Support"
 	depends on ARCH_QCOM

drivers/soc/qcom/memory_dump_v2.c

@@ -1,4 +1,4 @@
-/* Copyright (c) 2014-2017, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2014-2018, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -212,14 +212,9 @@ early_initcall(init_memory_dump);
 static int __init init_debug_lar_unlock(void)
 {
 	int ret;
-	uint32_t argument = 0;
 	struct scm_desc desc = {0};
 
-	if (!is_scm_armv8())
-		ret = scm_call(SCM_SVC_TZ, SCM_CMD_DEBUG_LAR_UNLOCK, &argument,
-			       sizeof(argument), NULL, 0);
-	else
-		ret = scm_call2(SCM_SIP_FNID(SCM_SVC_TZ,
+	ret = scm_call2(SCM_SIP_FNID(SCM_SVC_TZ,
 				SCM_CMD_DEBUG_LAR_UNLOCK), &desc);
 	if (ret)
 		pr_err("Core Debug Lock unlock failed, ret: %d\n", ret);