Cape manager issue: can't load dtb overlays Ubuntu

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1

This is my dmesg:

[ 1.159567] bone-capemgr bone_capemgr.9: Baseboard: ‘A335BNLT,000C,3114BBBK0245’
[ 1.167358] bone-capemgr bone_capemgr.9: compatible-baseboard=ti,beaglebone-black
[ 1.206265] bone-capemgr bone_capemgr.9: slot #0: No cape found
[ 1.243371] bone-capemgr bone_capemgr.9: slot #1: No cape found
[ 1.280479] bone-capemgr bone_capemgr.9: slot #2: No cape found
[ 1.317590] bone-capemgr bone_capemgr.9: slot #3: No cape found
[ 1.323831] bone-capemgr bone_capemgr.9: slot #4: specific override
[ 1.330430] bone-capemgr bone_capemgr.9: bone: Using override eeprom data at slot 4
[ 1.338474] bone-capemgr bone_capemgr.9: slot #4: ‘Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G’
[ 1.348586] bone-capemgr bone_capemgr.9: slot #5: specific override
[ 1.355180] bone-capemgr bone_capemgr.9: bone: Using override eeprom data at slot 5
[ 1.363224] bone-capemgr bone_capemgr.9: slot #5: ‘Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI’
[ 1.373527] bone-capemgr bone_capemgr.9: loader: before slot-4 BB-BONE-EMMC-2G:00A0 (prio 1)
[ 1.382412] bone-capemgr bone_capemgr.9: loader: check slot-4 BB-BONE-EMMC-2G:00A0 (prio 1)
[ 1.391209] bone-capemgr bone_capemgr.9: initialized OK.
[ 1.396806] bone-capemgr bone_capemgr.9: loader: before slot-5 BB-BONELT-HDMI:00A0 (prio 1)
[ 1.405576] bone-capemgr bone_capemgr.9: loader: check slot-5 BB-BONELT-HDMI:00A0 (prio 1)
[ 1.415533] OneNAND driver initializing
[ 1.420367] usbcore: registered new interface driver cdc_ether
[ 1.426577] usbcore: registered new interface driver rndis_host
[ 1.432877] bone-capemgr bone_capemgr.9: loader: after slot-4 BB-BONE-EMMC-2G:00A0 (prio 1)
[ 1.441663] bone-capemgr bone_capemgr.9: loader: after slot-5 BB-BONELT-HDMI:00A0 (prio 1)
[ 1.450432] usbcore: registered new interface driver cdc_ncm

This is what slots look like:

ubuntu@ubuntu-armhf:~$ cat $SLOTS
0: 54:PF—
1: 55:PF—
2: 56:PF—
3: 57:PF—

Where did 4 and 5 go???

Why do I get a failure to resolve device tree if I attempt to load an overlay?

ubuntu@ubuntu-armhf:~$ uname -a
Linux ubuntu-armhf 3.8.13-bone20 #1 SMP Wed May 29 10:49:26 UTC 2013 armv7l armv7l armv7l GNU/Linux

uEnv.txt:

ubuntu@ubuntu-armhf:/boot/uboot$ cat uEnv.txt
optargs=fixrtc
cape_enable=capemgr.enable_partno=BB-BONE-PRU-01
loadfdt=ext4load mmc ${mmcdev}:2 ${fdtaddr} /boot/dtbs/${fdtfile}
loaduimage=mw.l 4804c134 fe1fffff; if ext4load mmc 0:2 ${loadaddr} /boot/zImage; then mw.l 4804c194 01200000; echo Booting from external microSD…; setenv mmcdev 0; else setenv mmcdev 1; if test $mmc0 = 1; then setenv mmcroot /dev/mmcblk1p2 rw; fi; ext4load mmc 1:2 ${loadaddr} /boot/zImage && mw.l 4804c194 00c00000; echo Booting from internal eMMC…; fi
mmcboot=run mmcargs; bootz ${loadaddr} - ${fdtaddr}
uenvcmd=i2c mw 0x24 1 0x3e; run findfdt; if test $board_name = A335BNLT; then setenv mmcdev 1; mmc dev ${mmcdev}; if mmc rescan; then setenv mmc1 1; else setenv mmc1 0; fi; fi; setenv mmcdev 0; mmc dev ${mmcdev}; if mmc rescan; then setenv mmc0 1; else setenv mmc0 0; fi; run loaduimage && run loadfdt && run mmcboot

This is using a boot off sd card. When using the shipped eprom debian system(3.8.13 bone48, the slots file looks correct and I can load overlays. So I am guessing it is something in the 3.8.13-bone20 image. Is there a stable Ubuntu using a kernel that supports cape manager? I’d really like to do PWM off the GPIO pins.

2

There always was an image:

http://elinux.org/BeagleBoardUbuntu

You just chose the wrong initial image when you searched google..

Regards,

3

Unfortunately I need to run ubuntu 12.04 or 13.04 for my other projects.(ROS Hydro) Do you know of a Image that has those requirements?

4

Nope, not from me, i don't have the resources to support every known
variant, besdies 13.04 is end of life.

I have 14.04 + 14.10, with the kernel you need.. It's up to you to fix
"ROS Hydro"...

Otherwise, good luck!

Regards,

5

Hey Thanks - I’ll give 14.04 a try. 13.04 loads the capes, but doesn’t unload them, and I get segfaults when I try to run some of the Forest Project exercises. “You gotta suffer if you wanna sing the blues.”

6

Just map "unload" to "reboot" and it'll work everytime..

Hint... unloading is not supported..

Regards,

7

hmm echo -8 > $SLOTS only works for certain kernels?

8

It's not "100%" reliable across "every" cape/peripheral. Patches are
welcome to fix it, but it would best to work on something else.

Regards,