From faaa2e7644ec6101de0e7d4f35b9dd2999f110a7 Mon Sep 17 00:00:00 2001
From: Vikram Kanigiri <vikram.kanigiri@arm.com>
Date: Tue, 15 Jul 2014 16:49:22 +0100
Subject: Support asynchronous method for BL3-2 initialization

This patch adds support for BL3-2 initialization by asynchronous
method where BL3-1 transfers control to BL3-2 using world switch.
After BL3-2 initialization, it transfers control to BL3-3 via SPD
service handler. The SPD service handler initializes the CPU context
to BL3-3 entrypoint depending on the return function indentifier from
TSP initialization.

Fixes ARM-software/TF-issues#184

Change-Id: I7b135c2ceeb356d3bb5b6a287932e96ac67c7a34
---
 bl32/tsp/tsp.mk | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'bl32/tsp')

diff --git a/bl32/tsp/tsp.mk b/bl32/tsp/tsp.mk
index b9084d54..02cc13d3 100644
--- a/bl32/tsp/tsp.mk
+++ b/bl32/tsp/tsp.mk
@@ -39,6 +39,14 @@ BL32_SOURCES		+=	bl32/tsp/tsp_main.c			\
 
 BL32_LINKERFILE		:=	bl32/tsp/tsp.ld.S
 
+# This flag determines if the TSPD initializes BL3-2 in tspd_init() (synchronous
+# method) or configures BL3-1 to pass control to BL3-2 instead of BL3-3
+# (asynchronous method).
+TSP_INIT_ASYNC         :=      0
+
+$(eval $(call assert_boolean,TSP_INIT_ASYNC))
+$(eval $(call add_define,TSP_INIT_ASYNC))
+
 # Include the platform-specific TSP Makefile
 # If no platform-specific TSP Makefile exists, it means TSP is not supported
 # on this platform.
-- 
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