**** BEGIN LOGGING AT Tue Jul 23 02:59:59 2013
Jul 23 07:36:05 <panto> morning
Jul 23 15:07:37 <mluckham> panto, ping
Jul 23 15:08:09 <panto> mluckham, pong
Jul 23 15:08:14 <mluckham> hi
Jul 23 15:08:25 <mluckham> i'm having trouble with your kernel i built
Jul 23 15:08:43 <mluckham> it uncompresses but doesn't run, when I install it on an SD card linked to uImage
Jul 23 15:08:44 <panto> what kind of trouble?
Jul 23 15:09:01 <mluckham> it does run when loaded with uboot via tftp
Jul 23 15:09:17 <panto> that's cause the sequence is different when run from mmc
Jul 23 15:09:26 <panto> you don't include the dtb in the kernel
Jul 23 15:09:45 <panto> you put the *.dtb file in the place u-boot expects it
Jul 23 15:10:16 <mluckham> ok
Jul 23 15:10:38 <panto> the uImage-dtb.am335x-boneblack is a combined uImage+dtb
Jul 23 15:10:45 <panto> which you need when you tftpboot
Jul 23 15:11:09 <panto> u-boot sequence loads a dtb too from /boot in the rootfs
Jul 23 15:11:56 <mluckham> i did put a copy of your .dtb into /boot
Jul 23 15:12:35 <mluckham> what is the mechanism that makes it different, between the tftp method and disk method?  whether .dtb is included in the uImage or not?
Jul 23 15:12:47 <panto> tftp can only load a single file
Jul 23 15:12:55 <panto> so you need the uImage+dtb in a single one
Jul 23 15:13:48 <mluckham> so the uImage itself (with dtb included) is modified to look for the dtb as part of the memory image only?
Jul 23 15:14:17 <mluckham> is there a default dtb, in every uImage?
Jul 23 15:14:18 <panto> for it to load over mmc you don't need the combined image
Jul 23 15:14:20 <panto> just uImage
Jul 23 15:14:24 <mluckham> ok
Jul 23 15:15:04 <mluckham> what about the start memory address, when using tftp one is specified 0x80200000
Jul 23 15:15:09 <panto> $ make uImage & use it
Jul 23 15:15:21 <mluckham> understood
Jul 23 15:15:29 <panto> mluckham, the u-boot is set up to load it at the correct address
Jul 23 15:16:06 <mluckham> another question, about uEnv.txt
Jul 23 15:16:29 <mluckham> there are three of those (eMMC FAT partition, eMMC Linux /boot, SD Linux /boot)
Jul 23 15:16:44 <mluckham> are the ones in /boot just ignored, always?
Jul 23 15:17:11 <panto> the one used is in the fat partition
Jul 23 15:17:42 <mluckham> what about if I hold the BOOT button while starting up the BBB, and it boots from the SD card?
Jul 23 15:18:10 <panto> no
Jul 23 15:18:16 <panto> it loads it from sd card
Jul 23 15:18:34 <panto> but for the boot order to change there has to be a cold power boot
Jul 23 15:18:37 <panto> i.e. plug in
Jul 23 15:18:49 <mluckham> so if BOOT button is held, only the SD card is involved and it's /boot/uEnv.txt is used
Jul 23 15:19:00 <mluckham> otherwise, the eMMC FAT partition uEnv.txt is used
Jul 23 15:19:26 <panto> right
Jul 23 15:19:38 <panto> if you want to make sure just rename the MLO in emmc to something else
Jul 23 15:19:55 <mluckham> that will stop uboot from working?
Jul 23 15:20:31 <mluckham> so it could only be booted from SD card (while holding the BOOT button)
Jul 23 15:20:48 <panto> yes
Jul 23 15:20:56 <panto> there's a boot order
Jul 23 15:21:18 <mluckham> boot order, yes, but more partitions and block storage devices are involved than meets the eye :)
Jul 23 15:21:39 <panto> the partitions are irrelevant for the ROM
Jul 23 15:21:47 <panto> it only uses the first partition of each device
Jul 23 15:21:58 <mluckham> the FAT partition
Jul 23 15:22:13 <panto> yes
Jul 23 15:22:29 <panto> it's the only partition type it can read
Jul 23 15:22:59 <mluckham> I have read that uImage resides on the FAT partition, but I have not seen it there only in the ext4 /boot
Jul 23 15:23:09 <panto> no, it doesn't
Jul 23 15:23:17 <panto> it doesn't on u-boot config
Jul 23 15:23:39 <panto> a long long time ago u-boot couldn't access ext2 and maybe that's when that doc was written about
Jul 23 15:24:05 <mluckham> there are many sources talking about what look like the same things, that conflict with each other
Jul 23 15:24:08 <mluckham> it's a jungle out there
Jul 23 15:24:31 <panto> dog eat dog world
Jul 23 15:24:37 <mluckham> :)
Jul 23 15:24:37 <panto> cat and dogs living together
Jul 23 15:24:39 <panto> mass hysteria
Jul 23 15:24:46 <mluckham> hissy fits
Jul 23 15:25:13 <mluckham> thanks for your info, I'll see if I can get the kernel working now
Jul 23 15:25:21 <mluckham> i already got jj2baile's PRU demo stuff working, the other day
Jul 23 15:25:36 <mluckham> did you see the logic analyzer screen shot?
Jul 23 15:26:29 <panto> yes
Jul 23 15:26:31 <panto> cool stuff
Jul 23 15:26:45 <mluckham> it should get even cooler :)
Jul 23 15:26:51 <panto> :)
Jul 23 15:26:56 <mluckham> talk to you later
Jul 23 15:28:00 <panto> cya
Jul 23 16:59:16 <jj2baile> mluckham: oh, awesome!
Jul 23 18:37:17 <mluckham> jj2baile, I have Panto's kernel booting up on the SD and your PRU Boundary demo running - I hope by the end of the day to have Panto's PRU vring demo code working too
Jul 23 18:42:42 <mluckham> all my instructions collected so far are at https://www.dropbox.com/s/rx24a1khb823lj2/panto_build.sh
Jul 23 19:24:31 <mluckham> ping ka6sox
Jul 23 19:28:20 <mluckham> jj2baile - Maker Faire Detroit this weekend
Jul 23 19:39:43 <mluckham> panto, ping
Jul 23 19:39:55 <panto> pong
Jul 23 19:40:06 <mluckham> you said for PRU compiler i need to contact kridner
Jul 23 19:40:15 <panto> yes you do
Jul 23 19:40:16 <mluckham> to build prutest
Jul 23 19:40:18 <panto> jkrinder
Jul 23 19:40:58 <mluckham> does he monitor this channel?
Jul 23 19:41:04 <panto> he should
Jul 23 19:41:08 <panto> beagle is his baby
Jul 23 19:41:14 <panto> shoot him an email
Jul 23 19:41:28 <mluckham> i think i've seen jkridner in the list, but not currently
Jul 23 19:41:32 <mluckham> @ti.com?
Jul 23 19:41:36 <panto> yes
Jul 23 19:41:40 <mluckham> perfect, thanks
Jul 23 19:41:59 <mluckham> should i coordinate with ka6sox?
Jul 23 19:45:08 <panto> cc him
Jul 23 19:45:16 <mluckham> tx
Jul 23 19:45:19 <panto> anyway, time to go for the night
Jul 23 19:45:21 <panto> ttyt
Jul 23 19:45:32 <mluckham> gudnite
Jul 23 19:50:40 <mluckham> email address bounces
Jul 23 19:52:43 <mluckham> jkridner, ping?
Jul 23 19:57:20 <ds2> he's probally at MF
Jul 23 19:57:59 <mluckham> yah, i'll have to be patient
Jul 23 19:58:42 <ds2> what are you looking for?
Jul 23 19:58:45 <ds2> administrative stuff?
Jul 23 19:58:50 <mluckham> PRU compiler
Jul 23 19:59:04 <ds2> the github site no longer works or you need somethign newer?
Jul 23 19:59:28 <mluckham> panto said I need to ask him, the only github site I know of only has the assembler
Jul 23 19:59:37 <ds2> oh C compiler
Jul 23 19:59:38 <ds2> n/m
Jul 23 19:59:40 <mluckham> yes
Jul 23 22:35:42 <mluckham> ka6sox, piong
Jul 23 22:35:45 <mluckham> ping :)
Jul 23 23:23:59 <ka6sox> mluckham, pong?
Jul 23 23:38:18 <mluckham> hi
Jul 23 23:38:27 <mluckham> I got panto's kernel booted up from the SD card
Jul 23 23:39:53 <mluckham> and posted a new version of the information of the other day http://pastebin.com/zQpkR3da
Jul 23 23:40:10 <mluckham> I need to get in touch with kridner, about the PRU Compiler
Jul 23 23:41:59 <mluckham> to build panto's prutest
Jul 23 23:44:13 <ka6sox> right
Jul 23 23:44:17 <ka6sox> I saw the email
Jul 23 23:44:38 <mluckham> can you get in touch with him?
Jul 23 23:44:53 <ka6sox> you will probably find him here @ noon  your time tomorrow.
Jul 23 23:45:02 <mluckham> ok
Jul 23 23:46:14 <mluckham> has jj2baile built panto's kernel yet?
Jul 23 23:53:31 <ka6sox> jj2baile, have you done so?
Jul 24 00:06:04 <ka6sox> mluckham, I just replied to the email
Jul 24 00:06:06 <ka6sox> try that
Jul 24 00:07:00 <mluckham-mobile> Tx, I will
Jul 24 00:07:46 <ka6sox> np
**** ENDING LOGGING AT Wed Jul 24 02:59:59 2013