feat(tc): allow secure watchdog timer to trigger periodically
This patch does the following:
1. Configures SBSA secure watchdog timer as Group0 interrupt for
TC platform while keeping it as Group1 secure interrupt for
other CSS based SoCs.
2. Programs the watchdog timer to trigger periodically
3. Provides a Group0 interrupt handler for TC platform port to
deactivate the EL3 interrupt due to expiry of secure watchdog
timer and refresh it explicitly.
Change-Id: I3847d6eb7347c6ea0e527b97b096119ca1e6701b
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
diff --git a/include/plat/arm/common/plat_arm.h b/include/plat/arm/common/plat_arm.h
index ffbd4ca..e8461f5 100644
--- a/include/plat/arm/common/plat_arm.h
+++ b/include/plat/arm/common/plat_arm.h
@@ -364,6 +364,7 @@
/* secure watchdog */
void plat_arm_secure_wdt_start(void);
void plat_arm_secure_wdt_stop(void);
+void plat_arm_secure_wdt_refresh(void);
/* Get SOC-ID of ARM platform */
uint32_t plat_arm_get_soc_id(void);
diff --git a/include/plat/arm/css/common/css_def.h b/include/plat/arm/css/common/css_def.h
index dde174c..f87f857 100644
--- a/include/plat/arm/css/common/css_def.h
+++ b/include/plat/arm/css/common/css_def.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2023, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -52,18 +52,21 @@
* terminology. On a GICv2 system or mode, the interrupts will be treated as
* Group 0 interrupts.
*/
-#define CSS_G1S_IRQ_PROPS(grp) \
+#define CSS_G1S_INT_PROPS(grp) \
INTR_PROP_DESC(CSS_IRQ_MHU, GIC_HIGHEST_SEC_PRIORITY, grp, \
GIC_INTR_CFG_LEVEL), \
INTR_PROP_DESC(CSS_IRQ_GPU_SMMU_0, GIC_HIGHEST_SEC_PRIORITY, grp, \
GIC_INTR_CFG_LEVEL), \
INTR_PROP_DESC(CSS_IRQ_TZC, GIC_HIGHEST_SEC_PRIORITY, grp, \
GIC_INTR_CFG_LEVEL), \
- INTR_PROP_DESC(CSS_IRQ_TZ_WDOG, GIC_HIGHEST_SEC_PRIORITY, grp, \
- GIC_INTR_CFG_LEVEL), \
INTR_PROP_DESC(CSS_IRQ_SEC_SYS_TIMER, GIC_HIGHEST_SEC_PRIORITY, grp, \
GIC_INTR_CFG_LEVEL)
+#define CSS_G1S_IRQ_PROPS(grp) \
+ CSS_G1S_INT_PROPS(grp), \
+ INTR_PROP_DESC(CSS_IRQ_TZ_WDOG, GIC_HIGHEST_SEC_PRIORITY, grp, \
+ GIC_INTR_CFG_LEVEL)
+
#if CSS_USE_SCMI_SDS_DRIVER
/* Memory region for shared data storage */
#define PLAT_ARM_SDS_MEM_BASE ARM_SHARED_RAM_BASE