Creating an FPGA accelerator in 15 minutes

A forum for documenting the Parallella and Epiphany . (Not Q&A!)

Re: Creating an FPGA accelerator in 15 minutes

Postby cpantel » Thu Oct 18, 2018 10:19 pm

update 1:

booting with the new bitstream, I mounted the BOOT partition and:

cat /mnt/parallella.bit.bin > /dev/xdevcfga

and there was no timeout.


update 2:

root@parallella:/lib/modules/4.6.0+# find . -iname epi*
./kernel/drivers/misc/epiphany.ko

root@parallella:~# grep --color=never -i epi config
CONFIG_EPIPHANY=m
# CONFIG_DEBUG_TIMEKEEPING is not set

root@parallella:~# modmod epiphany
root@parallella:~# lsmod
Module Size Used by
epiphany 19123 0


seems that I am only a mknod away from success!!

but can not find the mknod /dev/epiphany ..... ..... ....


update 3:

Perhaps I am too tired or there is an erratic behavior.

I boot from a non-modified BOOT and /dev/epiphany shows up, but it is a folder

ls /dev/epiphany/
elink0 mesh0

could it be that it is too modern for the 15 minutes example?

BTW, there are the major and minor numbers...

ls /dev/epiphany/ -al
total 0
drwxr-xr-x 2 root root 80 Aug 18 00:04 .
drwxr-xr-x 13 root root 3280 Aug 18 00:05 ..
crw-rw-rw- 1 root root 243, 0 Aug 18 00:04 elink0
crw-rw-rw- 1 root root 243, 1 Aug 18 00:04 mesh0


I guess that I need an older kernel
cpantel
 
Posts: 9
Joined: Sat Sep 01, 2018 5:47 pm

Re: Creating an FPGA accelerator in 15 minutes

Postby cpantel » Wed Nov 07, 2018 12:47 am

It worked too, I had to use an old image and boot in runlevel 1, every detail, in spanish in

https://seguridad-agile.blogspot.com/20 ... nutos.html
cpantel
 
Posts: 9
Joined: Sat Sep 01, 2018 5:47 pm

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