fix(xilinx): register for idle callback
Currently, only Linux registering for getting idle callback during
subsystem restart or force power down. Because of that if Linux boot
hang or someone wants to do subsystem restart before Linux boot then
it's not working. So, register for idle callback in TF-A to get idle
callback during subsystem restart or force power down to do ARM
specific steps for proper power down of core.
Signed-off-by: Jay Buddhabhatti <jay.buddhabhatti@amd.com>
Change-Id: If7c01f79be6958678243be844bcfdc50d59b0fb8
diff --git a/plat/xilinx/common/pm_service/pm_svc_main.c b/plat/xilinx/common/pm_service/pm_svc_main.c
index fa38208..f739ab2 100644
--- a/plat/xilinx/common/pm_service/pm_svc_main.c
+++ b/plat/xilinx/common/pm_service/pm_svc_main.c
@@ -240,6 +240,14 @@
}
gicd_write_irouter(gicv3_driver_data->gicd_base, PLAT_VERSAL_IPI_IRQ, MODE);
+
+ /* Register for idle callback during force power down/restart */
+ ret = pm_register_notifier(primary_proc->node_id, EVENT_CPU_PWRDWN,
+ 0x0U, 0x1U, SECURE_FLAG);
+ if (ret != 0) {
+ WARN("BL31: registering idle callback for restart/force power down failed\n");
+ }
+
return ret;
}