# Building and Trying...BeagleBone Black and Aufs **URL:** \ **Category:** Linux Discussions\ **Created:** [January 6, 2023, 2:05am UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671 "2023-01-06T02:05:03Z")\ **Posts on this page:** 17\ **Page:** 1
**Author:** ![silver2row](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/silver2row/32/1016_2.png) [@silver2row](https://forum.digikey.com/u/silver2row)\ **Post date:** [January 6, 2023, 2:05am UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/1 "2023-01-06T02:05:03Z")
Hello, I have, am currently, used aufs to build the kernel. I found their info. on a dainty oops. Anyway, outside of the miracle accident that got me involved in `aufs`, I would like to understand a bit more. Does the images that are available to build only for eMMC or is there a way to utilize the build instructions from this site to allow for SD Card image creation? Seth P.S. Right now, I used these commands to build my image: ```auto 1. install u-boot 2. compile u-boot 3. install the kernel 4. compile the kernel 5. Then, I started to listen to the eewiki Linux guides on this effort 6. install info. to /fstab 7. install debian 8. build debian to the /rootfs/ dir. 9. debian is now at /rootfs/ 10. I altered some files for use... a. /opt/ and /boot/ and /etc/ only b. I put in the files and info. into those directories to build the image w/ debian at /dev/mmcblk0p1 and at /dev/mmcblk0p2 11. As you might guess, I cannot boot. ``` When did /dev/mmcblk0 start and /dev/mmcblk0p1 and /dev/mmcblk0p2 stop? I am asking trying to fill in the data of what happened and when… aufs only allows for so much of [beagleboard.org](http://beagleboard.org) ideas in their kernels, e.g. .dts files, `modules` are mostly hidden so far, and now I cannot boot. I understand that this build from your ideas and knowledge is done and completed for now. I am not trying to follow along 100% of the time, i.e. as I would like to build differently and w/ other methods. I will try to post the build. Oh! `are these builds for use w/ TTL to USB adapters` or can I just plug and play w/ them? I may be mistaken but I think: 1. These builds are for eMMC builds only 2. The builds are for USB to TTL cable adapters also but only? ---
**Author:** ![silver2row](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/silver2row/32/1016_2.png) [@silver2row](https://forum.digikey.com/u/silver2row)\ **Post date:** [January 6, 2023, 5:00am UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/2 "2023-01-06T05:00:33Z")
Hello, Sorry about the above garble. I will update this compilation, the steps taken, soon. I just realized w/out proper explanations, helping me is beyond the scope of what actually I typed in my first set of ideas. Seth ---
**Author:** ![silver2row](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/silver2row/32/1016_2.png) [@silver2row](https://forum.digikey.com/u/silver2row)\ **Post date:** [January 6, 2023, 12:20pm UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/3 "2023-01-06T12:20:00Z")
Hello, This is what I did: ```auto install dependencies...and then compile the main components! git clone https://github.com/u-boot/u-boot cd u-boot/ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- distclean make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x_evm_defconfig make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- menuconfig make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- wget https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.228.tar.xz xz -d linux-5.4.228.tar.xz tar -xvfp linux-5.4.228.tar cd linux-5.4.228/ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- omap2plus_defconfig make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- menuconfig make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- ``` This is now me following the references at eewiki for building the image that was made. ```auto sudo cfdisk /dev/mmcblk0 ... Either use two partitions or one partition depending on the year/make/model of the kernel/u-boot? make it bootable save yes Exit ``` Then I basically follow all of the guide on the eewiki for the BeagleBone Black up until building the kernel modules and naming scheme for the kernel. If you see anything I am doing that is out of bounds, please let me know. Seth P.S. If there are a particular set of ideas I am missing, please instruct me. ---
**Author:** ![RobertCNelson](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/robertcnelson/32/12_2.png) [@RobertCNelson](https://forum.digikey.com/u/RobertCNelson)\ **Post date:** [January 6, 2023, 2:59pm UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/4 "2023-01-06T14:59:16Z")
Hi @silver2row a well debugged and fully supported how to is posted here: [Debian: Getting Started with the BeagleBone Black](https://forum.digikey.com/t/debian-getting-started-with-the-beaglebone-black/12967) BeagleBone Blacks and similar devices have been shipping with this default configuration for probably 8-9 years now… It’s well tested and simpler then your split partition setup. Regards, ---
**Author:** ![silver2row](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/silver2row/32/1016_2.png) [@silver2row](https://forum.digikey.com/u/silver2row)\ **Post date:** [January 6, 2023, 5:38pm UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/5 "2023-01-06T17:38:32Z")
Hello @RobertCNelson , No issue as usual. I am just recalling when I could build w/ one partition and a boot partition. I do not think it was six years ago or so… About the [beagleboard.org](http://beagleboard.org) boards, like the BBB, for a bit there was ideas being allocated into the kernel, `/arch/arm/boot/*/dts/*`, slowly and made things change a bit. So I thought… I could be way off base. Anyway, no issue. Seth P.S. I will keep trying, i.e. as there is a fellow trying to get i2s working on his BBBW (I think). Anyway, I was going to pitch in and keep building images while producing the correct build steps for him/her but came up short. ---
**Author:** ![RobertCNelson](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/robertcnelson/32/12_2.png) [@RobertCNelson](https://forum.digikey.com/u/RobertCNelson)\ **Post date:** [January 6, 2023, 5:45pm UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/6 "2023-01-06T17:45:49Z")
I2S works fine on the BBB. No one made a reference I2S cape, so there is no reference overlay in our git repo. So as long as you: 1. Wire it up correctly 2. Load the proper Overlay It’ll work. There are a few threads in the ti e2e forums on custom wiring/device-tree/etc… Regards, ---
**Author:** ![silver2row](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/silver2row/32/1016_2.png) [@silver2row](https://forum.digikey.com/u/silver2row)\ **Post date:** [January 6, 2023, 5:48pm UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/7 "2023-01-06T17:48:06Z")
Thank you… Seth P.S. I saw on the [beagleboard.org](http://beagleboard.org) site in the docs. sections, there is a short on playing sound w/ ALSA. I sort of directed the person to that specified section of the docs. ---
**Author:** ![RobertCNelson](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/robertcnelson/32/12_2.png) [@RobertCNelson](https://forum.digikey.com/u/RobertCNelson)\ **Post date:** [January 6, 2023, 5:52pm UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/8 "2023-01-06T17:52:22Z")
The BBB has always had i2s audio, thru the HDMI port… [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/am335x-boneblack-hdmi.dtsi?h=v6.2-rc2#n70](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/am335x-boneblack-hdmi.dtsi?h=v6.2-rc2#n70) Regards, ---
**Author:** ![silver2row](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/silver2row/32/1016_2.png) [@silver2row](https://forum.digikey.com/u/silver2row)\ **Post date:** [January 6, 2023, 5:54pm UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/9 "2023-01-06T17:54:39Z")
The framer provides this support? Seth P.S. Right…the NXP onboard. That is the framer. So, it will be a hack from the am335x → NXP framer → HDMI → extra circuitry… ---
**Author:** ![RobertCNelson](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/robertcnelson/32/12_2.png) [@RobertCNelson](https://forum.digikey.com/u/RobertCNelson)\ **Post date:** [January 6, 2023, 6:04pm UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/10 "2023-01-06T18:04:52Z")
> [@silver2row](#): > > So, it will be a hack from the am335x → NXP framer → HDMI → extra circuitry… Why? SPI1\_SCLK, SPI1\_CS0, and SPI1\_D0 used for i2s audio are between the am335x and the NXP framer, are routed on the P8/P9 header so users can use them directly… Just disable TDA19988… Regards, ---
**Author:** ![silver2row](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/silver2row/32/1016_2.png) [@silver2row](https://forum.digikey.com/u/silver2row)\ **Post date:** [January 6, 2023, 6:11pm UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/11 "2023-01-06T18:11:53Z")
Oh…nice. I was unaware of this idea. I did not know how the i2s worked on the BBB. Seth P.S. Okay…I will keep reading about this idea. ---
**Author:** ![silver2row](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/silver2row/32/1016_2.png) [@silver2row](https://forum.digikey.com/u/silver2row)\ **Post date:** [January 6, 2023, 6:13pm UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/12 "2023-01-06T18:13:29Z")
Hello @RobertCNelson , I thought i2c0 was internal only… Seth P.S. So, the overlay gets allocated to /boot/uEnv.txt, then before the actual build of the source of the overlays, one would remove said TDA19988, and then finally build the overlays… ---
**Author:** ![RobertCNelson](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/robertcnelson/32/12_2.png) [@RobertCNelson](https://forum.digikey.com/u/RobertCNelson)\ **Post date:** [January 6, 2023, 6:15pm UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/13 "2023-01-06T18:15:44Z")
> [@silver2row](#): > > I thought i2c0 was internal only… i2c and i2s are nothing alike, unlike a similar acronym… i2s is a serial point to point link… Regards ---
**Author:** ![RobertCNelson](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/robertcnelson/32/12_2.png) [@RobertCNelson](https://forum.digikey.com/u/RobertCNelson)\ **Post date:** [January 6, 2023, 6:16pm UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/14 "2023-01-06T18:16:49Z")
> [@silver2row](#): > > P.S. So, the overlay gets allocated to /boot/uEnv.txt, then before the actual build of the source of the overlays, one would remove said TDA19988, and then finally build the overlays… [https://elinux.org/Beagleboard:BeagleBoneBlack\_Debian#U-Boot\_Disable\_on-board\_devices](https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Disable_on-board_devices) To Disable HDMI AUDIO: ```auto disable_uboot_overlay_audio=1 ``` Regards, ---
**Author:** ![silver2row](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/silver2row/32/1016_2.png) [@silver2row](https://forum.digikey.com/u/silver2row)\ **Post date:** [January 6, 2023, 6:21pm UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/15 "2023-01-06T18:21:14Z")
Okay and Right, So, it is just disabling the HDMI audio in the u-boot via the `already-made-available` /boot/uEnv.txt file. Then, one can use the sound and audio w/ SPI and not i2c. I got confused I guess. Line 70 from the link above shows the &i2c0 `phandle` or directive (whatever it is called in DTS format) which showed the item in question. Seth ---
**Author:** ![RobertCNelson](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/robertcnelson/32/12_2.png) [@RobertCNelson](https://forum.digikey.com/u/RobertCNelson)\ **Post date:** [January 6, 2023, 6:25pm UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/16 "2023-01-06T18:25:40Z")
> [@silver2row](#): > > So, it is just disabling the HDMI audio in the u-boot via the `already-made-available` /boot/uEnv.txt file. Correct… > [@silver2row](#): > > Then, one can use the sound and audio w/ SPI and not i2c. ![audio](https://global.discourse-cdn.com/digikey/original/3X/6/9/69f8b03e83b8c7308488bed6e030795bd430f2ce.png) > [@silver2row](#): > > I got confused I guess. Line 70 from the link above shows the &i2c0 `phandle` or directive (whatever it is called in DTS format) which showed the item in question. That’s the node with tda19988, which shows the i2s configuration… Regards, ---
**Author:** ![silver2row](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/silver2row/32/1016_2.png) [@silver2row](https://forum.digikey.com/u/silver2row)\ **Post date:** [January 6, 2023, 6:43pm UTC](https://forum.digikey.com/t/building-and-trying-beaglebone-black-and-aufs/27671/17 "2023-01-06T18:43:21Z")
Okay and Yes Sir, Node. It is called a node. I saw that a little too late. Seth