Setting up a build environment for overo-oe
follow the instructions on his page:
(you need a lot of space to reduce the amount of space needed insert
INHERIT += "rm_work"
to overo-oe/build/conf/local.conf)
when you are at the command:
$ bitbake omap3-console-image (when you are in a virtual box environment it will take long 12 hours at least)
and build it on Ubuntu 10.04 LTS - the Lucid Lynx - release you will get this error:
ERROR: ....expat_2.0.1.bb do_unpack failed
solution to this error:
http://www.facebook.com/note.php?note_id=398968379361
follow instructions of ERROR#1
patching the kernel for spidev
You can follow the instructions on gumstix's website to build a complete cross development environment. Paparazzi's Makefile will default to look for it in /overo-oe
Work is in progress to offer a pre-compiled cross compilation toolchain.
For the moment compiling omap-console-image will generate the cross compiler and libs you need. You also need to compile libevent which is not compiled by omap-console-image ( bitbake libevent )
patching the kernel for spidev -- look where kernel comes from in
/overo-oe/org.openembedded.dev/recipes/linux/linux-omap3_2.6.32.bb
git clone git://www.sakoman.com/git/linux-omap-2.6.git
git checkout d434b954906c4f3e356d64d6b49675c601456f51
place the following patch into /overo-oe/org.openembedded.dev/recipes/linux/linux-omap3-2.6.32/overo/add-spidev-for-mcspi1.patch
diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
index 165b6bd..fbe3be4 100644
--- a/arch/arm/mach-omap2/board-overo.c
+++ b/arch/arm/mach-omap2/board-overo.c
@@ -625,6 +625,14 @@ static struct spi_board_info overo_spi_board_info[] __initdata = {
.mode = SPI_MODE_3,
},
#endif
+ {
+ .modalias = "spidev",
+ .max_speed_hz = 48000000, //48 Mbps
+ .bus_num = 1,
+ .chip_select = 1,
+ .mode = SPI_MODE_1,
+ // .controller_data = &spidev_mcspi_config,
+ },
};
static int __init overo_spi_init(void)
remove ads and lgphillips from /overo-oe/org.openembedded.dev/recipes/linux/linux-omap3/overo/defconfig
really in /overo-oe/org.openembedded.dev/recipes/linux/linux-omap3-2.6.32/overo/
edit /overo-oe/org.openembedded.dev/recipes/linux/linux-omap3_2.6.32.bb
SRC_URI_append = " \
file://${BOOT_SPLASH} \
file://add-spidev-for-mcspi1.patch;patch=1 \
"
bitbake -c clean linux-omap3
bitbake -c configure linux-omap3
bitbake -c rebuild linux-omap3
the defconfig I changed is in
/overo-oe/tmp/work/overo-angstrom-linux-gnueabi/linux-omap3-2.6.32-r51/