IRC log for #hawkboard on 20100803

00:02.43*** join/#hawkboard infobot (~infobot@rikers.org)
00:02.43*** topic/#hawkboard is Welcome to #hawkboard, a discussion channel devoted to the TI OMAP L138 Hawkboard - see www.hawkboard.org for more info - channel log at http://ibot.rikers.org/%23hawkboard
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06:15.36*** join/#hawkboard jackman (~jackman@c-24-21-216-140.hsd1.or.comcast.net)
06:16.25jackmanhi all
06:16.35jackmani finally got my hawkboard to do something other than look pretty. :D
06:17.15jackmanCan anyone help me with making a u-boot script to automate the boot process?
06:20.02jackmani'm looking at http://www.denx.de/wiki/view/DULG/UBootScripts
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06:40.05*** join/#hawkboard Gaston|Home (~Gaston@c-b12ee353.155-1-64736c11.cust.bredbandsbolaget.se)
06:48.48Gaston|Homepepere: I tried a couple of examples using the jtag-debugger to upload and debug on the hawkboard. As far as I remember it wasnt to difficult.
06:50.07Gaston|Homehook up a serial console and halt the uboot process before it tries to boot linux and then connect to board through the jtag.
06:50.55Gaston|Homeits all documented somewhere on either TI and or Ridgeruns wiki
06:52.41Gaston|HomeWhat I do wonder is if we need a .gel file that properly reflects the hawkboards configuration or if the generic is good enough.
06:54.18Gaston|HomeI read your questions on the #beagle channel
06:55.06Gaston|Home<pepere> "In my case I'm doing more low level, mow latency things, so it is not that needed (codec engine)"
06:55.17Gaston|Home<pepere> "mow=low"
06:55.33Gaston|Home<pepere> "In my use case I need to setup DMA to get data from externel source, process it with custom DSP algorithm and send result back to arm if needed"
06:55.47Gaston|Home<pepere> "so most of the work is on DMA stuff"
06:55.58Gaston|Home<av500> "what source?"
06:56.08Gaston|Home<pepere> "upp port"
06:56.20Gaston|Home<av500> "upp?"
06:56.28Gaston|Home<pepere> "(omapl138 specific, but there is a dsp/bios driver for that)"
06:56.36Gaston|Home<pepere> "universal parallel port"
06:56.44Gaston|Home<pepere> "some high speed synchroneous 16bit port"
06:59.05Gaston|HomeMy guess would be that you should look at some other implementations using dsp-link to get a feel for how it works.
07:00.25Gaston|HomeThis one does not go in detail but the scheamtic pictures are nice: http://sites.google.com/site/vcambareri/files-and-code/PresentazioneMPHS.pdf?attredirects=0&d=1
07:00.36Gaston|Homeschematic*
07:10.17Gaston|Homehttp://processors.wiki.ti.com/index.php/Debugging_the_DSP_side_of_a_DSPLink_application_on_OMAP-L138_using_CCS
07:11.37jackmanGaston|Home: sorry, was that directed toward me?
07:12.52Gaston|HomeNo it was all towards peperes questions yesterday
07:13.10jackmanah
07:13.22Gaston|Homejackman: can you repeat your question?
07:13.30eFfeM_workjackman: no need to make a boot script just make sure your bootenv is ok (especially bootargs and bootcmd)
07:13.33eFfeM_workthen do a saveenv
07:14.47eFfeM_workor in other words, do whatever you want to change, then make sure that bootcmd has the text you want to type when booting then saveenv
07:15.02Gaston|HomeeFfeM_work : I've seen some talk about boot.scr for beagle board, is that something that would work for Hawkboard as well, or do we need different version of u-boot for that to work?
07:15.32eFfeM_workboot.scr is something very beaglish afaik
07:15.51eFfeM_workmost u-boots do not support something like that
07:16.00jackmanawesome
07:16.04jackmanthanks
07:16.09Gaston|Homeseems nice to be able to offload the users from fiddling with serial-port and environment variables
07:16.15eFfeM_worki think boot.scr is even read by the beagle before doing u-boot
07:16.27Gaston|Homeah
07:16.42eFfeM_worknot 100% sure though
07:17.25eFfeM_workthinking of it, it might also be invoked from u-boot; i have no beagle handy to check
07:23.20Gaston|HomeLooks like its U-Boot that reads it, http://groups.google.com/group/beagleboard/browse_thread/thread/f28420438543f3c6/25cfe230d569f5e7?lnk=gst&q=boot.scr#25cfe230d569f5e7
07:23.48jackmanGaston|Home/eFfem_work: That's a lot easier than I expected.  Thanks for the help!
07:25.14jackmanjust out of curiousity, beagleboard encourages users to load the kernel image from an sdcard. is that not possible?
07:25.24jackman...with the hawkboard?
07:29.02jackmanin addition i'm looking at http://elinux.org/Hawkboard#Booting_Linux_Kernel_and_Mounting_RAMDISK
07:29.56jackmanthe memory addresses that they're using to store uimage, ramdisk, and uimage in nand seem pretty arbitrary
07:30.15jackmanyet most documentation uses the same addresses.
07:30.30jackmanis there a reason those particular addresses are used?
07:41.38eFfeM_workjackman: was afk, not sure if the hawk u-boot supports sd
07:41.56eFfeM_workif it does, you can do that (but saving env on sd is not everywhere supported)
07:43.19eFfeM_workwrt memory addresses: where you store in nand is to a large extend up to you as long as there is nand at that location (and make sure your partitions are ok, if applicable)
07:46.24jackmaneFfeM_work: what do you use the hawkboard for?
07:46.37jackmaneFfeM_work: if you don't mind me asking, of course. :)
07:48.32eFfeM_workjackman: not for much things at the moment
07:48.40eFfeM_workmaybe I'll revive my server project on it
07:48.50eFfeM_workjust has too much hw around to play with
07:49.21eFfeM_workhttp://elinux.org/BeagleBoard/James
08:06.31jackmansweet
08:10.28Gaston|Homejackman: What is your goal with Hawkboard?
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09:52.33Gaston|HomeeFfeM_work: http://elinux.org/ECE597_boot.scr
09:53.41Gaston|HomeDo you have the sauce for hawkboard u-boot handy ?
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09:54.35eFfeM_workGaston|Home: nice link,
09:54.43eFfeM_workguess you mean source, not sauce
09:54.50Gaston|Home;)
09:55.25Gaston|HomeThat whole ECE597-section is very well authored
09:55.37eFfeM_workthis is what oe gives:
09:55.38eFfeM_worku-boot_git.bb:SRC_URI_hawkboard          = "git://arago-project.org/git/people/sekhar/u-boot-omapl1.git;protocol=git;branch=master"
09:56.22Gaston|HomeIs that the same as we get as default u-boot?
09:56.31Gaston|HomeI'm not so sure
09:56.33eFfeM_workbtw mkimage is a very simple prog to wrap the text commands; if I recall correctly it just adds a crc
09:56.43eFfeM_workGaston|Home: no idea
09:57.07Gaston|Homecrc=gibberish for a script file
09:57.43Gaston|Homewhy would you want to scramble a simple text file with crc (unless in clear text)
09:57.51eFfeM_workbasically wolfgang wanted some protection against bits flipping in the file
09:57.56eFfeM_workor read errors or whatever
09:59.06Gaston|Homeso, would a bootscriptcrc=0xFF environment variable in the end be so bad?
09:59.34eFfeM_worknot to me, discuss with wdenk in #u-boot
09:59.48Gaston|Homewolfgang is clever, maybe I should stop second guessing ;)
10:00.30eFfeM_worki briefly had a discussion with him on it, you could ask, he is very open and responsive and either he or you might learn something from it
10:00.44eFfeM_work(my bet is that you'll be at the learning end though :-) )
10:01.18Gaston|Homehehe, thats my thoughts as well
10:17.32eFfeM_workGaston|Home: peeked a little bit in the ece597 section, looks indeed good. however that exactly is ece597
10:17.50eFfeM_workis it a course from somewhere?
10:18.00Gaston|Homeyes it is
10:18.12Gaston|Homewith projects for students
10:18.39eFfeM_workis this from uni of ill in urbana champaign?
10:20.42Gaston|Homedunno, still looking at the arago git for u-boot
10:20.48Gaston|Homehttp://arago-project.org/git/people/?p=sekhar/u-boot-omapl1.git;a=blob;f=include/configs/da850evm.h;h=442a68f0ed19530b7540e8734dde987604c0cd80;hb=HEAD
10:21.42Gaston|HomeThis seems to be the default for da850evm #define CONFIG_BOOTCOMMAND      "sf probe 0;sf read 0xc0700000 0x80000 0x220000;bootm 0xc0700000"
10:21.59Gaston|Homeseems very familiar, no? :)
10:40.57Gaston|HomeECE597 seems to stem out of Rose-Hulman college in Terre Haute, Indiana.
10:42.47Gaston|Homehttp://www.rose-hulman.edu/Catalog0910/courses-ece.htm
10:43.00Gaston|HomeECE 597 Special Topics in Electrical Engineering 4C Pre: Consent of instructor
10:43.01Gaston|HomeSpecial topics of current interest to graduate students and senior undergraduates.
10:43.43Gaston|Homehttp://elinux.org/ECE597_-_32-bit_Embedded_Linux,_Rose-Hulman
11:54.21eFfeM_workGaston|Home: ah ok, thanks for the info (was afk for lunch & meeting)
11:56.10Gaston|HomeeFfeM_work: Did you look in to that PRU-stuff?
11:56.28eFfeM_workPRU ?
11:56.35Gaston|HomeI guess not ;)
11:56.54eFfeM_workguess not either, what does PRU stand for ?
11:56.55Gaston|Homew8 I'll dig up a link again ...
11:58.28Gaston|HomeVideo: http://e2e.ti.com/videos/m/applications_processors/124542.aspx
11:59.03Gaston|HomeProgrammable Realtime Unit (PRU)
11:59.52Gaston|Homewiki: http://processors.wiki.ti.com/index.php/Programmable_Realtime_Unit_Subsystem
12:00.38Gaston|Homewiki category PRU: http://processors.wiki.ti.com/index.php/Category:PRU
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12:16.51eFfeM_workah ok, I remember
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14:45.56Gaston|Home### Hawktalk starting in 15 minutes ###
14:46.10Gaston|Homehttp://www.hawkboard.org/hawktawks
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16:23.48jackmanGaston|Home: It's for a delivery management system.
16:24.29Gaston|Homeok
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