OpenEmbedded May 2017

openembedded@lists.linaro.org

3 participants
4 discussions

creating a bootable image for DB410C? (and other 96boards?)

by Robert P. J. Day

still clawing my way through the previous replies to my admittedly tedious questions, but since i want to get specific with this issue, i thought a new thread would be in order. i think my biggest obstacle with this DB410C is just getting used to a new boot process that is clearly more sophisticated than what i'm used to with other boards, like my BBB. rather than ask numerous questions, is there a canonical explanation of the boot procedure, like say the hardware reference manual, or something like that? i think a lot of my confusion will evaporate as soon as i can say, "ah, so *that's* how the boot process works." to that end, i'm going to check out the actual flashing utility in the debian install image; i figure reading the source is the best way to get to the bottom of this. rday -- ======================================================================== Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ========================================================================

7 years, 7 months

couple questions about installing latest debian image on DB410C

by Robert P. J. Day

i don't currently have access to the DB410C (colleague has wandered off with it), but what should be a couple simple questions. i'm reading the Installation Guide here: https://github.com/96boards/documentation/wiki/Dragonboard-410c-Installatio… and the basic recipe for installing the latest debian image without using fastboot is given in the section: https://github.com/96boards/documentation/wiki/Dragonboard-410c-Installatio… i notice that that section clearly instructs the user to hook up a mouse, keyboard and monitor to do this graphically. can you not do that same install without all that hardware, like through the console port? and if i read a bit further, i see that if one uses "fastboot", it appears that that would solve the problem. so if i had the board and only a power adapter and USB cable to support a terminal window, what would be the proper approach? rday -- ======================================================================== Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ========================================================================

7 years, 7 months

building and booting into u-boot on the dragonboard 410c?

by Robert P. J. Day

before i get to installing and/or booting the linux image i build with openembedded, i'd like to boot simply to the appropriate u-boot binary for this target board. first, i've already bitbaked an absolutely stock "core-image-minimal" image for this board without issue using the meta-qcom layer at git://git.yoctoproject.org/meta-qcom although nicolas tells me that that layer is more generally maintained on github at: https://github.com/ndechesne/meta-qcom but that's easy enough to change. haven't booted into that image yet, just wanted to verify that the build worked with no problem and produced all the artifacts i expect from an OE build. worked flawlessly. to add u-boot to the build process, i went back and added the following lines to my local.conf: EXTRA_IMAGEDEPENDS += "u-boot" UBOOT_MACHINE = "dragonboard410c_config" again, build appeared to work perfectly, and generated the new artifact: u-boot-dragonboard-410c-2017.01-r0.bin so, again, looks good. at this point, it appears that the recipe for booting to u-boot is in the readme.txt file in the appropriate directory in the u-boot source: http://git.denx.de/?p=u-boot.git;a=blob;f=board/qualcomm/dragonboard410c/re… can anyone verify that that is still the correct set of instructions? and as i read it, to get to "fastboot" mode, i don't need the FTDI connection, just USB OTG should do it, is that correct? is there a way to install the u-boot binary on the SD card and boot directly from there? rday -- ======================================================================== Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ========================================================================

7 years, 7 months

upcoming questions on building u-boot and OE for dragonboard 410c

by Robert P. J. Day

following up on a question i asked on the generic OE mailing list, and nicolas dechesne's extensive reply: http://lists.openembedded.org/pipermail/openembedded-core/2017-May/136547.h… i figured i might as well move the discussion here since most of my queries will be specific to that target board. briefly, i unpacked my new dragonboard, cabled it up, plugged it in and it popped into android as i expected it would, so i can at least verify that that part works. also, i have a fair bit of experience with ARM, openembedded and u-boot, so i'll try not to ask idiotic questions. first question coming shortly, might as well keep them modular and not try to ask everything at once. rday -- ======================================================================== Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ========================================================================

7 years, 7 months

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OpenEmbedded May 2017