Le 12 avril 2012 18:25, Mark Hatle <[email protected]> a écrit : > On 4/12/12 12:38 PM, Nicolas Aguirre wrote: >> >> Hi, >> >> I'm building an oe-core minimal image and toolchain for the cubox[1] >> which has a Marvell Armada 510 SoC, also known as Dove. >> It's a armv7 Arm processor with wmmx2 instruction set [2]. >> >> I setup a new machine for the cubox and added : >> require conf/machine/include/arm/arch-armv7a.inc >> in my cubox.conf file >> >> I also added >> ARM_FP_MODE = "hardfp" >> TARGET_FPU = "hardfp" >> in my local.conf file. > > > That is not how to enable the mode with the newer tune infrastructure. You > need to simply enable a tune, in your machine configuration, that matches > the desired output. > > The following are the defined VFP (hard float requires VFP) tunes for hard > float: > > armv7ahf armv7athf armv7ahf-neon armv7athf-neon > > the "t" varients support thumb, but don't have it enabled by default.. > > the -neon variants also enabled the neon instructions. > > I do not know what the "wmmx2" instructions are, if they are different from > VFP and Neon, then it sounds like you need a custom tune. > > Your machine configure should set DEFAULTTUNE = "..." where "..." is the > tune you want for that given machine. (armv7ahf should be a safe place to > start.) >
Hi Mark, Thanks for your detailed explanation I'm now able to build a minimal core image with hardfp enabled. The detail of the OE Build : TUNE_FEATURES = "armv7a vfp callconvention-hard" TARGET_FPU = "vfp" I pushed my layer on github : https://github.com/naguirre/meta-cubox Nothing interesting for now and binaries have not been tested. I encountered some problems during the build, due to a bad fetch operation of mime-support package. I need to fetch it by hand, the .tar.gz was corrupted and contains an html page. Another problem i encountered, was during the build of cpufrequtils. And it seems that this point is related to harfp. cpufreq is linked against libcpufreq which are not compatible each other. I don't know if it's a problem in cpufreq recipe, i need to investigate more. Another problem was during the build of libvpx which seems to be not compatible with armv7ahf, only with armv7a. ERROR: Logfile of failure stored in: /home/nico/e17_src/cubox/setup-scripts/build/tmp-angstrom_2010_x-eglibc/work/armv7ahf-vfp-angstrom-linux-gnueabi/libvpx-0.9.5-r3.0/temp/log.do_configure.9887 Log data follows: | ERROR: Function failed: do_configure (see /home/nico/e17_src/cubox/setup-scripts/build/tmp-angstrom_2010_x-eglibc/work/armv7ahf-vfp-angstrom-linux-gnueabi/libvpx-0.9.5-r3.0/temp/log.do_configure.9887 for further information) | Configuring selected codecs | enabling vp8_encoder | enabling vp8_decoder | Configuring for target 'armv7-linux-gcc' | enabling armv7 | enabling armv6 | enabling armv5te | enabling fast_unaligned | Toolchain is unable to link executables | | Configuration failed. This could reflect a misconfiguration of your | toolchains, improper options selected, or another problem. If you | don't see any useful error messages above, the next step is to look | at the configure error log file (config.err) to determine what | configure was trying to do when it died. NOTE: package libvpx-0.9.5-r3.0: task do_configure: Failed I now understand why Koen said that hardfp is not compatible with anything :) > Figure out the correct set of commands for gcc to support this processor, > and I can help you define a custom tune file. > I need to dig more about wmmx2 instructions set, to see how to enable it in gcc I will maybe come back with more questions :) Thanks for your time, Nicolas > The few references I found in a quick google search seem to indicate that > the core does support thumb, it should use the armv7-a compilation, and > there is little to no support for the wmmx2 instructions. > > --Mark > > >> Any help would be appreciate :) >> >> [1] http://www.solid-run.com/products/cubox >> [2] http://www.marvell.com/application-processors/armada-500/ >> >> regards, > > > > _______________________________________________ > Openembedded-devel mailing list > [email protected] > http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel -- Nicolas Aguirre Mail: [email protected] Web: http://enna.geexbox.org Blog: http://dev.enlightenment.fr/~captainigloo/ _______________________________________________ Openembedded-devel mailing list [email protected] http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel
