#timvideos

mithro: http://j-core.org/

Title: J-core Open Processor (at j-core.org)

shenki: yeah, I'd seen that before - it is not a very efficient design it seems, also lackes a MMU

LX9 FPGA that can run a J2 at 50mhz

A single instance of the processor with the cache disabled takes up about 60% of an LX9's capacity.

heh ok

i guess it's a asic design, not something that's made as a soft core

yeah

shenki: Doing some hacking?

mithro: im trying to install windows, so i can download the update file for a sony android device

it's the worst

shenki: why not just give up and do some HDMI2USB hacking :P

mithro: hah

mithro: what should i hack on?

shenki: see if you can reproduce my or1k branch

shenki: or getting the or1k linux kernel building

shenki: or getting that UART code upstream :P

uart code is the worst. i'll look at or1k

Title: GitHub - openrisc/tutorials: OpenRISC Tutorials (at github.com)

shenki: http://openrisc.io/

Title: OpenRISC - OpenRISC (at openrisc.io)

shenki: http://openrisc.io/newlib/building.html

Title: or1k-elf toolchain (newlib port for OpenRISC) (at openrisc.io)

shenki: https://www.kernel.org/doc/readme/arch-openrisc...

shenki: maybe https://github.com/openrisc/tutorials/blob/mast... too?

Title: tutorials/Linux.md at master · openrisc/tutorials · GitHub (at github.com)

the guys in #openrisc are pretty responsive

cool

shenki: I have the binutils and gcc in our conda package

shenki: My branch which adds or1k to HDMI2USB firmware can be found at https://github.com/mithro/HDMI2USB-misoc-firmwa...

Title: GitHub - mithro/HDMI2USB-misoc-firmware at or1k (at github.com)

ok

mithro: are we going with musl or uclibc?

shenki: I'm build a "bare metal" toolchain with newlib

mithro: yeah. according to openrisc.io we want to pick one of the other two for linux

shenki: for user space :)

luserspace

shenki: Get the kernel booting first :P

yeah

mithro: how do i build your hdmi2usb branch?

shenki: same way as normal

shenki: export you add ARCH=or1k

mithro: can i just boot a prebuilt one? or do i need to build

shenki: probably want to build

k

mithro: we need a quickstart for when developers forget how to make it go

Title: HDMI2USB-misoc-firmware/README.md at or1k · mithro/HDMI2USB-misoc-firmware · GitHub (at github.com)

BRB for the GSoC meeting

see you there

+ sudo adduser root dialout

The user `root' is already a member of `dialout'.

thats wrong

hello! turns out the all 3 independent internet lines at Numato office have died today. I'm on from mobile hotspot, so please excuse (dis)connection issues.

anyone present on VC?

Okay, here now

rohitksingh: hi! i'm trying to connect in

I wasn't planning on doing a VC

xfxf: hi! :)

ohh

good then

oh right

just here?

hi

hi!

_florent_ hi!

aw man you don't get to see my ridiculously stupid big blue gamer headset

hehe :D

oh, right. ive been rushing around getting a laptop to do a vc :)

Hello everyone!

shenki: same here...I freaked out after knowing that all net lines were down

hey tija

rohitksingh: :)

booted the kernel in the sim

_florent_: What frequency is the SDRAM on the Atlys suppose to be running at? 300MHz with sysclk of 75MHz?

I feel deja vu with that question :P

mithro: yes 300Mhz on Atlys (1:2 phy), 400MHz on Opsis (1:4 phy)

_florent_: Great! I added some asserts which checked the PLL was generating the right speed clock signals and found out a bunch of my comments were wrong

ok good

place and route is taking forever :/

shenki: are you targetting the HDMI2USB target?

shenki: use the base target, it takes like 5 minutes

shenki: you probably want to target the Opsis as well, I think I still have your Atlys, right?

_florent_: btw, what are your plans around merging the stuff in the opsis_soc into the HDMI2USB firmware?

shenki: export BOARD=opsis; export TARGET=base

mithro: I'd like to get things working on the opsis_soc and then merge everything that is needed

hdmi_in was easy to convert

hdmi_out need to be refactored if we want to avoid using DataflowGraph that was removed from Migen

jpeg encoder will be easy to re-integrate

mithro: oh, ok. should have asked about that a few hours ago :)

Intermediate status: 1679 unrouted; REAL time: 1 hrs 2 mins 16 secs

still going

mithro: i should kill it?

mithro: im doing all this work on my novena. i should add a target for that

shenki: you are using hdmi2usb on the novena FPGA?

_florent_: no, i haven't touched the fpga yet

_florent_: im just using it as a very expensive console :)

ah ok... :), at least if you want to try, it should use the same DDR3 memory

oh cool

_florent_: do you have one?

yes, but I haven't done too much things with it for now

Even the video VideoMixerSoC is much faster than the full HDMI2USB SoC - it seems the JPEG encoder makes things crappy - hence the rewrite :)

_florent_: BTW Do you think that moving the firmware into the SPI flash would change the PAR at all? I was thinking that it would just end up freeing block RAM?

_florent_: at some point you'll need to do a liteAXI so that we can interface a hard core to the FPGA on the Novena and Zynq ICs

maybe. If you want you can test by removing the firmware ram, it will not be fonctionnal, but we will have an idea if it eases things

_florent_: fixing these timing constraints seem to make the long compile time happen less often too

we already have stream interface that are very close to AXI in misoc

AXI is just some stream interfaces coupled togethers

I believe the ARM and FPGA on the Novena are set up for AXI?

I know nothing about AXI :P

Title: AXI Interconnect (at www.xilinx.com)

_florent_: I think we might want an AXI compatible bit because ARM cores can natively talk it?

Sadly the Novena can't be used to compile gateware

shenki: So, what do I have to do to convince your Cyanogen friend I'm meeting on Saturday to start hacking on HDMI2USB stuff? :P

mithro: hah! he's taking a gap year to do cygn security work for the year

mithro: so in one sense he has lots of time

shenki: I haven't tested the MiSoC BIOS boots on the or1k yet

mithro: what did you test?

wow, ok, firmware built

that was quick

It compiles :-)

ok