Greetings,I have a recipes that requires 128MB of CMA allocation for DMA. I followed the instruction in http://www.yoctoproject.org/docs/1.6/kernel-dev/kernel-dev.html#changing-the-configuration and did the following:
My recipes structure: meta-mylayer\recipes-my\uio-test\1. Then in uio-test folder, I have uio-test.bb that created by recipetool (in general) with some modification. uio-test.bb looks like this:
#------------------------------------------------------------------ # Recipe created by recipetool# This is the basis of a recipe and may need further editing in order to be fully functional.
# (Feel free to remove these comments when editing.)# Unable to find any files that looked like license statements. Check the accompanying # documentation and source headers and set LICENSE and LIC_FILES_CHKSUM accordingly.
## NOTE: LICENSE is being set to "CLOSED" to allow you to at least start building - if # this is not accurate with respect to the licensing of the software being built (it # will not be in most cases) you must specify the correct value before using this
# recipe for anything other than initial testing/development! LICENSE = "CLOSED" LIC_FILES_CHKSUM = ""# No information for SRC_URI yet (only an external source tree was specified)
PV = "2.0.2" SRC_URI = "file://src"# NOTE: this is a Makefile-only piece of software, so we cannot generate much of the # recipe automatically - you will need to examine the Makefile yourself and ensure
# that the appropriate arguments are passed in.
do_configure () {
# Specify any needed configure commands here
:
}
do_compile () {
# You will almost certainly need to add additional arguments here
cd ${WORKDIR}/src
oe_runmake
}
FILES_${PN} = "/www/pages /etc/lighttpd.d"
do_install () {
# This is a guess; additional arguments may be required
cd ${WORKDIR}/src
oe_runmake install 'DESTDIR=${D}'
}
DEPENDS = "libgcc boost"
RDEPENDS_${PN} = "libgcc boost-thread boost-system lighttpd
lighttpd-module-cgi"
#------------------------------------------------------------------2. Also in uio-test folder, I have uio-test.bbappend file with these contents:
#------------------------------------------------------------------
FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
SRC_URI += "file://uio-test.cfg"
#----------------------^^^^^^^^^^^^^^^^^^^-------------------------
3. In uio-test/files folder, I have uio-test.cfg with the following
contents:
#------------------------------------------------------------------ CONFIG_CMA_ALIGNMENT=8 CONFIG_CMA=y CONFIG_CMA_AREAS=7 CONFIG_DMA_CMA=y CONFIG_CMA_SIZE_MBYTES=128 CONFIG_CMA_SIZE_SEL_MBYTES=y CONFIG_DMADEVICES=y CONFIG_DMA_ENGINE=y CONFIG_DMA_OF=y CONFIG_XILINX_DMA_ENGINES=y CONFIG_XILINX_DMA=y CONFIG_DMA_API_DEBUG=y CONFIG_HAS_DMA=y CONFIG_NEED_DMA_MAP_STATE=y CONFIG_HAVE_DMA_CONTIGUOUS=y CONFIG_HAVE_DMA_API_DEBUG=y CONFIG_HAVE_GENERIC_DMA_COHERENT=y CONFIG_ARM_DMA_MEM_BUFFERABLE=y CONFIG_ZONE_DMA_FLAG=0 #----------------------^^^^^^^^^^^^^^^^^^^-------------------------My question: I think the cfg file is being parsed because if I change the folder name files to something else, bitbake will complaint about not being able to find uio-test.cfg. However, the final .config in built do not have the CMA allocated. My meta layer does have a priority higher than the upstream layers. What else can cause the problem here? Any suggestions? Thanks.
Fan Zhang
<<attachment: fzhang.vcf>>
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