The hal_pru_generic PRU code is all written in assembly and is compiled down to a .bin file. Copying that bin file to the firmware doesn't work. On the Beaglebone Black the contents of the bin file are copied to the appropriate address in memory in order to load it onto the PRU. What do I have to do to this bin file in order to be able to copy it to /lib/firmare/am57xx-pru1_1-fw (or one of the other 3 pru options) and then start it with remoteproc?
On Wednesday, April 8, 2020 at 12:45:33 AM UTC-6, Jason Kridner wrote: > > On Wed, Apr 8, 2020 at 12:28 AM John Allwine <[email protected] > <javascript:>> wrote: > > > > Thanks Jason! I’ve found enough info on the pinmux to get me by for now. > hal_pru_generic and the PRUs seem to be the big blocker at this point. I > still need to get my head around the details of hal_pru_generic to know if > using remoteproc would work. How do I use remoteproc to run code on the > PRU? > > Check out > https://github.com/beagleboard/cloud9-examples/tree/v2020.01/BeagleBone/AI/pru > > > PRU start script in the Makefile is at > > https://github.com/beagleboard/cloud9-examples/blob/v2020.01/common/Makefile#L164-L167 > > > > > > > On Apr 7, 2020, at 9:57 PM, Jason Kridner <[email protected] > <javascript:>> wrote: > > > > > > On Tue, Apr 7, 2020 at 11:27 PM John Allwine < > [email protected] <javascript:>> wrote: > > >> > > >> Is there a UIO PRU driver for the Beaglebone AI? How do I enable it? > I'm trying to be able to talk to the PRUs using hal_pru_generic on the the > Beaglebone AI, which does so on the BBB using the uio_pruss module. On the > AI I see a uio_pruss_shmem module loaded when looking at /proc/modules, is > that the same thing? > > > > > > This custom little uio_pruss_shmem driver will go away as a different > > > existing uio driver can be configured to provide uio shared memory > > > access without interfering with the remoteproc driver's ability to > > > load the PRU code. > > > > > > It is largely the same as the uio_pruss module, but the memory region > > > shared does not include the control registers needed to load code and > > > start/stop the processor. That can be done with the remoteproc > > > mechanisms. > > > > > > Will this work for you? > > > > > > BTW, sorry I never got back to you on the pinmux stuff. It keeps > > > dropping from my plate as I seem to always have something more urgent > > > to do at any given moment. Can you throw a meeting time on my calendar > > > if you still need this and we can make it a live working session? The > > > pinmux thing isn't complicated, but I have to look around in a bunch > > > of places to gather the right bits. > > > > > >> > > >> I can run the following commands on the AI: > > >> > > >> cat /sys/class/uio/uio0/maps/map0/addr > > >> 0x4b200000 > > >> > > >> cat /sys/class/uio/uio0/maps/map0/size > > >> 0x00020000 > > >> > > >> cat /sys/class/uio/uio1/maps/map0/addr > > >> 0x4b280000 > > >> > > >> cat /sys/class/uio/uio1/maps/map0/size > > >> 0x00020000 > > >> > > >> The size on both of those seem small as the PRUSS_INTC region starts > at 0x00020000 according to the AM572x Technical Reference Manual on page > 418 (and on the Beaglebone Black the PRU uio size is 0x00080000). > > >> > > >> Anyway, I'm not very familiar with things at this level, so I may not > be phrasing my questions well, but any help is appreciated! > > >> > > >> -- > > >> For more options, visit http://beagleboard.org/discuss > > >> --- > > >> You received this message because you are subscribed to the Google > Groups "BeagleBoard" group. > > >> To unsubscribe from this group and stop receiving emails from it, > send an email to [email protected] <javascript:>. > > >> To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/02eb6681-dcac-4ad2-a45c-fa27a2e346f3%40googlegroups.com. > > > > > > > > > > > > > > -- > > > https://beagleboard.org/about - a 501c3 non-profit educating around > > > open hardware computing > > > > > > -- > > > For more options, visit http://beagleboard.org/discuss > > > --- > > > You received this message because you are subscribed to the Google > Groups "BeagleBoard" group. > > > To unsubscribe from this group and stop receiving emails from it, send > an email to [email protected] <javascript:>. > > > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/CA%2BT6QPnMrcQTc8jFkoGncpMZ18O7eSQf_Wm5Bw2KH4PMUFhsrA%40mail.gmail.com. > > > > > > -- > > For more options, visit http://beagleboard.org/discuss > > --- > > You received this message because you are subscribed to the Google > Groups "BeagleBoard" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to [email protected] <javascript:>. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/396383D5-0B85-40C4-84D3-1AC9FAE2BF29%40allwinedesigns.com. > > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/b5b79d1a-00b1-4052-bf46-207220daf768%40googlegroups.com.
