GICv3: Enable multi socket GIC redistributor frame discovery
This patch provides declaration and definition of new GICv3 driver
API: gicv3_rdistif_probe().This function delegates the responsibility
of discovering the corresponding Redistributor base frame to each CPU
itself. It is a modified version of gicv3_rdistif_base_addrs_probe()
and is executed by each CPU in the platform unlike the previous
approach in which only the Primary CPU did the discovery of all the
Redistributor frames for every CPU.
The flush operations as part of gicv3_driver_init() function are
made necessary even for platforms with WARMBOOT_ENABLE_DCACHE_EARLY
because the GICv3 driver data structure contents are accessed by CPU
with D-Cache turned off during power down operations.
Change-Id: I1833e81d3974b32a3e4a3df4766a33d070982268
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
diff --git a/include/drivers/arm/gicv3.h b/include/drivers/arm/gicv3.h
index 9c72d4d..c4f42d0 100644
--- a/include/drivers/arm/gicv3.h
+++ b/include/drivers/arm/gicv3.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -366,6 +366,7 @@
* GICv3 EL3 driver API
******************************************************************************/
void gicv3_driver_init(const gicv3_driver_data_t *plat_driver_data);
+int gicv3_rdistif_probe(const uintptr_t gicr_frame);
void gicv3_distif_init(void);
void gicv3_rdistif_init(unsigned int proc_num);
void gicv3_rdistif_on(unsigned int proc_num);