From 32da19db12911d997cc04d35a1ba8b3b52deae01 Mon Sep 17 00:00:00 2001
From: inmarket <andrewh@inmarket.com.au>
Date: Thu, 5 Nov 2015 17:07:23 +1000
Subject: [PATCH] Add support for a PreInit Routine to allow early hardware
 initialisation

---
 gfxconf.example.h | 1 +
 src/gfx.c         | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/gfxconf.example.h b/gfxconf.example.h
index 387a4b2b..72920386 100644
--- a/gfxconf.example.h
+++ b/gfxconf.example.h
@@ -48,6 +48,7 @@
 //    #define GFX_OS_HEAP_SIZE                         0
 //    #define GFX_OS_NO_INIT                           FALSE
 //    #define GFX_OS_INIT_NO_WARNING                   FALSE
+//    #define GFX_OS_PRE_INIT_FUNCTION                 myHardwareInitRoutine
 //    #define GFX_OS_EXTRA_INIT_FUNCTION               myOSInitRoutine
 //    #define GFX_OS_EXTRA_DEINIT_FUNCTION             myOSDeInitRoutine
 
diff --git a/src/gfx.c b/src/gfx.c
index b3d82c15..b4a28209 100644
--- a/src/gfx.c
+++ b/src/gfx.c
@@ -20,6 +20,9 @@ static bool_t gfxInitDone = FALSE;
 /* These init functions are defined by each module but not published */
 extern void _gosInit(void);
 extern void _gosDeinit(void);
+#ifdef GFX_OS_PRE_INIT_FUNCTION
+		extern void GFX_OS_PRE_INIT_FUNCTION(void);
+#endif
 #ifdef GFX_OS_EXTRA_INIT_FUNCTION
 		extern void GFX_OS_EXTRA_INIT_FUNCTION(void);
 #endif
@@ -80,6 +83,9 @@ void gfxInit(void)
 
 	// These must be initialised in the order of their dependancies
 
+	#ifdef GFX_OS_PRE_INIT_FUNCTION
+		GFX_OS_PRE_INIT_FUNCTION();
+	#endif
 	_gosInit();
 	#ifdef GFX_OS_EXTRA_INIT_FUNCTION
 		GFX_OS_EXTRA_INIT_FUNCTION();