summaryrefslogtreecommitdiff
path: root/README
diff options
context:
space:
mode:
authorNikita Kiryanov <nikita@compulab.co.il>2013-02-24 21:28:43 +0000
committerTom Rini <trini@ti.com>2013-03-11 11:06:09 -0400
commitc08804853361bb7c6e2f9e0cdcdc0b327f71fe35 (patch)
treec534705bdd53f50cdf361b5715b93aaa46a055ed /README
parent48ec52910047e048a5857fdaf00679b85a952ec5 (diff)
downloadu-boot-imx-c08804853361bb7c6e2f9e0cdcdc0b327f71fe35.zip
u-boot-imx-c08804853361bb7c6e2f9e0cdcdc0b327f71fe35.tar.gz
u-boot-imx-c08804853361bb7c6e2f9e0cdcdc0b327f71fe35.tar.bz2
lcd: implement a callback for splashimage
On some architectures certain values of splashimage will lead to a data abort exception. Document the problem, and implement a callback for splashimage to reject such values. Cc: Anatolij Gustschin <agust@denx.de> Cc: Wolfgang Denk <wd@denx.de> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il> Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Diffstat (limited to 'README')
-rw-r--r--README11
1 files changed, 11 insertions, 0 deletions
diff --git a/README b/README
index b8ed1f1..398d70d 100644
--- a/README
+++ b/README
@@ -1530,6 +1530,17 @@ CBFS (Coreboot Filesystem) support
allows for a "silent" boot where a splash screen is
loaded very quickly after power-on.
+ CONFIG_SPLASHIMAGE_GUARD
+
+ If this option is set, then U-Boot will prevent the environment
+ variable "splashimage" from being set to a problematic address
+ (see README.displaying-bmps and README.arm-unaligned-accesses).
+ This option is useful for targets where, due to alignment
+ restrictions, an improperly aligned BMP image will cause a data
+ abort. If you think you will not have problems with unaligned
+ accesses (for example because your toolchain prevents them)
+ there is no need to set this option.
+
CONFIG_SPLASH_SCREEN_ALIGN
If this option is set the splash image can be freely positioned