i may be looking at this entirely incorrectly at the moment, but
what is the preferred way to sneak in a custom, target-specific
/etc/fw_env.config file when adding u-boot-fw-utils to one's image?
if i examine u-boot-fw-utils_2016.03.bb, i can see that that package
is based on (predictably) the source code for u-boot:
SRC_URI = "git://git.denx.de/u-boot.git;branch=master"
S = "${WORKDIR}/git"
which is fine, but if look at the overriding do_install() routine in
that recipe file, i see:
do_install () {
install -d ${D}${base_sbindir}
install -d ${D}${sysconfdir}
install -m 755 ${S}/tools/env/fw_printenv
${D}${base_sbindir}/fw_printenv
install -m 755 ${S}/tools/env/fw_printenv ${D}${base_sbindir}/fw_setenv
install -m 0644 ${S}/tools/env/fw_env.config
${D}${sysconfdir}/fw_env.config
so as i read it, the last action of do_install() is to install ... the
generic fw_env.config file sitting in u-boot's tools/env/ directory,
which really has no value. so how does one overcome this?
i poked around and found a couple layers, here's meta-mender:
https://github.com/mendersoftware/meta-mender/blob/master/recipes-bsp/u-boot/u-boot-fw-utils_2015.10.bbappend
which adds a whole new task just to install a custom config file:
# Keep this separately from the rest of the .bb file in case that .bb file is
# overridden from another layer.
require u-boot-mender.inc
DEPENDS = "u-boot"
# Configure fw_printenv so that it looks in the right place for the environment.
do_configure_fw_printenv () {
cat > ${D}${sysconfdir}/fw_env.config <<EOF
/uboot/uboot.env 0x0000 ${BOOTENV_SIZE}
EOF
}
addtask do_configure_fw_printenv before do_package after do_install
i was expecting to see SRC_URI appending that file; however, if i
look in u-boot.inc, i can see:
if [ -e ${WORKDIR}/fw_env.config ] ; then
install -d ${D}${sysconfdir}
install -m 644 ${WORKDIR}/fw_env.config ${D}${sysconfdir}/fw_env.config
fi
which is sort of what i was looking for, but the fact that that is in
u-boot.inc doesn't seem to affect the u-boot-fw-utils recipe.
so what is the recommended way to add a custom /etc/fw_env.config to
my image if i'm adding u-boot-fw-utils?
rday
--
========================================================================
Robert P. J. Day Ottawa, Ontario, CANADA
http://crashcourse.ca
Twitter: http://twitter.com/rpjday
LinkedIn: http://ca.linkedin.com/in/rpjday
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