RTEMS_FATAL_SOURCE_EXCEPTION on booting PRU for beagleboneblack

[Utkarsh Rai]

While trying to boot the PRU app from this
<https://github.com/nilhoel1/rtems-pru> repo. I
encounter RTEMS_FATAL_SOURCE_EXCEPTION. The complete log goes
something like this:-

media listener: event = PARTITION ATTACH, state = INQUIRY, src =
/dev/mmcsd-0
media listener: event = PARTITION ATTACH, state = SUCCESS, src =
/dev/mmcsd-0, dest = /dev/mmcsd-0-0
media listener: event = MOUNT, state = INQUIRY, src = /dev/mmcsd-0-0
media listener: event = MOUNT, state = SUCCESS, src = /dev/mmcsd-0-0, dest
= /media/mmcsd-0-0
SD: OK
rc.conf: loading: /etc/rc.conf
rc.conf: start: /etc/rc.conf size:165, timeout: 10

*** FATAL ***
fatal source: 9 (RTEMS_FATAL_SOURCE_EXCEPTION)

R0   = 0x8064d5a8 R8  = 0x010100ae
R1   = 0x808081c6 R9  = 0x0000000d
R2   = 0x80807ef0 R10 = 0x00000001
R3   = 0x00000000 R11 = 0x80807ee8
R4   = 0x8064d5a8 R12 = 0x60000113
R5   = 0x80807ee8 SP  = 0x806502e0
R6   = 0x80807ee8 LR  = 0x8020eb3c
R7   = 0x0000000d PC  = 0x8020e824
CPSR = 0xa0000113 VEC = 0x00000004
RTEMS version: 5.0.0.e22554535796fc29a7ed7c5e2338128e324a621d
RTEMS tools: 7.5.0 20191114 (RTEMS 5, RSB 5 (599c4d7c87fa), Newlib
d14714c69)
executing thread ID: 0x08a010001
executing thread name: UI1
U-Boot SPL 2019.04-00002-gbb4af0f50f (Jul 08 2019 - 11:44:39 -0500)
Trying to boot from MMC2
Loading Environment from EXT4...
** Unable to use mmc 0:1 for loading the env **

I have used the binary of this
<https://gist.github.com/nilhoel1/90bad502dbe94eeb6dbb816f7e61e9e4> overlay
and the relevant commands in uEnv.txt are:-
load mmc 0 0x82000000 pru.exe.img;
load mmc 0 0x88000000 am335x-boneblack.dtb;
load mmc 0 0x880f0000 AM335X-PRU-UIO-00A0.dtbo;
fdt addr 0x88000000; fdt resize 65536; fdt apply 0x880f0000; bootm
0x82000000 - 0x88000000;

Now since the booting timeout occurs at the /etc/rc.conf I suppose the
problem is with the device tree files. Can someone please help me out with
this one?

Regards,
Utkarsh Rai
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