fix(n1sdp): add platform-specific power domain functions
Commit 4d8c18196378824e388cf31ef991ba8fbbb09cbf added a redistributor
power off to resolve an error on N1SDP/Morello. Prior to this fix,
turning off both cores in a cluster would cause a hang when powering
back on either core. This change introduced issues on other platforms
with a different GIC implementation, and was reverted in commit
60719e4e0965aead49d927f12bf2a37bd2629012.
This commit uses the previous fix in platform-specific implementations
of power domain off/suspend functions.
Signed-off-by: Werner Lewis <werner.lewis@arm.com>
Change-Id: I52c463646c494fe931ff4ce47afb940a56978fcd
diff --git a/plat/arm/board/n1sdp/n1sdp_bl31_setup.c b/plat/arm/board/n1sdp/n1sdp_bl31_setup.c
index 4941a4b..ec2455f 100644
--- a/plat/arm/board/n1sdp/n1sdp_bl31_setup.c
+++ b/plat/arm/board/n1sdp/n1sdp_bl31_setup.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2018-2022, Arm Limited. All rights reserved.
+ * Copyright (c) 2018-2023, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -14,6 +14,7 @@
#include <plat/arm/common/plat_arm.h>
#include "n1sdp_def.h"
+#include "n1sdp_private.h"
#include <platform_def.h>
/*
@@ -69,6 +70,8 @@
const plat_psci_ops_t *plat_arm_psci_override_pm_ops(plat_psci_ops_t *ops)
{
+ ops->pwr_domain_off = n1sdp_pwr_domain_off;
+ ops->pwr_domain_suspend = n1sdp_pwr_domain_suspend;
return css_scmi_override_pm_ops(ops);
}
diff --git a/plat/arm/board/n1sdp/n1sdp_pm.c b/plat/arm/board/n1sdp/n1sdp_pm.c
new file mode 100644
index 0000000..e43832a
--- /dev/null
+++ b/plat/arm/board/n1sdp/n1sdp_pm.c
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2023, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <lib/psci/psci.h>
+#include <plat/arm/common/plat_arm.h>
+#include <plat/arm/css/common/css_pm.h>
+
+#include "n1sdp_private.h"
+
+/*******************************************************************************
+ * N1SDP specific functions called when turning off or suspending a power
+ * domain. Both additionally disable the GIC redistributor interface as cores
+ * are disabled to let cluster-PPU state transition to completion when a
+ * cluster is powered down.
+ ******************************************************************************/
+void n1sdp_pwr_domain_off(const psci_power_state_t *target_state)
+{
+ css_pwr_domain_off(target_state);
+ plat_arm_gic_redistif_off();
+}
+
+void n1sdp_pwr_domain_suspend(const psci_power_state_t *target_state)
+{
+ css_pwr_domain_suspend(target_state);
+ plat_arm_gic_redistif_off();
+}
diff --git a/plat/arm/board/n1sdp/n1sdp_private.h b/plat/arm/board/n1sdp/n1sdp_private.h
new file mode 100644
index 0000000..7a5c51d
--- /dev/null
+++ b/plat/arm/board/n1sdp/n1sdp_private.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2023, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef N1SDP_PRIVATE_H
+#define N1SDP_PRIVATE_H
+
+#include <lib/psci/psci.h>
+
+void n1sdp_pwr_domain_off(const psci_power_state_t *target_state);
+void n1sdp_pwr_domain_suspend(const psci_power_state_t *target_state);
+
+#endif /* N1SDP_PRIVATE_H */
diff --git a/plat/arm/board/n1sdp/platform.mk b/plat/arm/board/n1sdp/platform.mk
index 9c0cc02..bd62614 100644
--- a/plat/arm/board/n1sdp/platform.mk
+++ b/plat/arm/board/n1sdp/platform.mk
@@ -47,6 +47,7 @@
${INTERCONNECT_SOURCES} \
${N1SDP_GIC_SOURCES} \
${N1SDP_BASE}/n1sdp_bl31_setup.c \
+ ${N1SDP_BASE}/n1sdp_pm.c \
${N1SDP_BASE}/n1sdp_topology.c \
${N1SDP_BASE}/n1sdp_security.c \
drivers/arm/css/sds/sds.c