From mboxrd@z Thu Jan 1 00:00:00 1970 From: Minkyu Kang Date: Mon, 25 Apr 2011 17:22:34 +0900 Subject: [U-Boot] [PATCH v4] Don't grab memory for LCD if FB address is defined In-Reply-To: References: <4D75B591.3040605@samsung.com> <20110313195021.1B4D4E0CE97@gemini.denx.de> <4D7F24C3.9060006@samsung.com> <4D8B576B.3030507@free.fr> <4D8BE6BD.2090101@samsung.com> <20110424232755.C2225D5269F@gemini.denx.de> <4DB524FB.9010905@aribaud.net> Message-ID: <4DB52F4A.8060407@samsung.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de If FB address is defined specific address then don't grab memory for LCD Signed-off-by: Minkyu Kang Cc: Albert Aribaud Cc: Wolfgang Denk Cc: Stefan Roese Cc: Kim Phillips Cc: Andy Fleming Cc: Kumar Gala --- v4 move the document v3 fix whitespace errors v2 add document README | 14 ++++++++++++++ arch/arm/lib/board.c | 4 ++++ arch/m68k/lib/board.c | 4 ++++ arch/powerpc/lib/board.c | 4 ++++ 4 files changed, 26 insertions(+), 0 deletions(-) diff --git a/README b/README index beb1cbb..c5533b4 100644 --- a/README +++ b/README @@ -2009,6 +2009,20 @@ 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 diff --git a/arch/arm/lib/board.c b/arch/arm/lib/board.c index dc46e21..db13ad1 100644 --- a/arch/arm/lib/board.c +++ b/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 */ /* diff --git a/arch/m68k/lib/board.c b/arch/m68k/lib/board.c index f824b34..6a892db 100644 --- a/arch/m68k/lib/board.c +++ b/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 */ /* diff --git a/arch/powerpc/lib/board.c b/arch/powerpc/lib/board.c index 83fb074..aaa5add 100644 --- a/arch/powerpc/lib/board.c +++ b/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) -- 1.7.1