Don't grab memory for LCD if FB address is defined

If FB address is defined specific address then don't grab memory for LCD

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Cc: Albert Aribaud <albert.aribaud@free.fr>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Kim Phillips <kim.phillips@freescale.com>
Cc: Andy Fleming <afleming@gmail.com>
Cc: Kumar Gala <kumar.gala@freescale.com>

README

@@ -2011,6 +2011,20 @@ The following options need to be configured:
 		thus overwriting the architecutre dependent default
 		settings.
 
+- Frame Buffer Address:
+	CONFIG_FB_ADDR
+
+	Define CONFIG_FB_ADDR if you want to use specific address for
+	frame buffer.
+	Then system will reserve the frame buffer address to defined address
+	instead of lcd_setmem (this function grab the memory for frame buffer
+	by panel's size).
+
+	Please see board_init_f function.
+
+	If you want this config option then,
+	please define it at your board config file
+
 Legacy uImage format:
 
   Arg	Where			When

arch/arm/lib/board.c

@@ -356,9 +356,13 @@ void board_init_f (ulong bootflag)
 #endif /* CONFIG_VFD */
 
 #ifdef CONFIG_LCD
+#ifdef CONFIG_FB_ADDR
+	gd->fb_base = CONFIG_FB_ADDR;
+#else
 	/* reserve memory for LCD display (always full pages) */
 	addr = lcd_setmem (addr);
 	gd->fb_base = addr;
+#endif /* CONFIG_FB_ADDR */
 #endif /* CONFIG_LCD */
 
 	/*

arch/m68k/lib/board.c

@@ -277,9 +277,13 @@ board_init_f (ulong bootflag)
 	debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
 
 #ifdef CONFIG_LCD
+#ifdef CONFIG_FB_ADDR
+	gd->fb_base = CONFIG_FB_ADDR;
+#else
 	/* reserve memory for LCD display (always full pages) */
 	addr = lcd_setmem (addr);
 	gd->fb_base = addr;
+#endif /* CONFIG_FB_ADDR */
 #endif /* CONFIG_LCD */
 
 	/*

arch/powerpc/lib/board.c

@@ -459,9 +459,13 @@ void board_init_f (ulong bootflag)
 	debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
 
 #ifdef CONFIG_LCD
+#ifdef CONFIG_FB_ADDR
+	gd->fb_base = CONFIG_FB_ADDR;
+#else
 	/* reserve memory for LCD display (always full pages) */
 	addr = lcd_setmem (addr);
 	gd->fb_base = addr;
+#endif /* CONFIG_FB_ADDR */
 #endif /* CONFIG_LCD */
 
 #if defined(CONFIG_VIDEO) && defined(CONFIG_8xx)