How about RISC-V for next ODROID ?

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zupet
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How about RISC-V for next ODROID ?

Unread post by zupet » Mon Feb 05, 2018 11:32 am

https://www.crowdsupply.com/sifive/hifive-unleashed

HiFive begin to croud funding SiFive Freedom U540 SoC dev board. It has quad cord CPU with 8 GB ECC memory but it's quiet expansive.

How about Hard Kernel release cheaper U540 SoC dev board ? SW and kernel support is very strong all around world and a lots of student and labs will buy RISC-V dev board.

I might miss GPU and other hardware accelerators, but strong SW support is far more important than HW features.

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Re: How about RISC-V for next ODROID ?

Unread post by odroid » Mon Feb 05, 2018 11:46 am

I think the board is already very cheap. We can't make it cheaper since the SoC and ECC-DRAM are quite expensive.
BTW, did you have any chance to review their Linux kernel source code?

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Re: How about RISC-V for next ODROID ?

Unread post by zupet » Mon Feb 05, 2018 2:10 pm

https://kernelnewbies.org/Linux_4.15#Ne ... re:_RISC-V
Linux Kernel 4.15 is supporting RISC-V

https://github.com/riscv/riscv-linux
RISC-V linux kernel repository, last committed by Tovalds Linus

As I know ECC is optional for most of memory controllers.
That expansive RISC-V dev board has ECC because it's targeting big industries. (Server, Super Computer Etc..)

There is no price tag on Freedom U540 SoC and it's family yet.
Last edited by zupet on Mon Feb 05, 2018 2:18 pm, edited 1 time in total.

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Re: How about RISC-V for next ODROID ?

Unread post by odroid » Mon Feb 05, 2018 2:18 pm

Kernel support seems to be fine.
But current SoC design has a very limited capability for server application.
Since there is no SATA/PCIe/USB3.0 for highspeed storage IO, nobody can expect any suitable headless server use cases.

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Re: How about RISC-V for next ODROID ?

Unread post by zupet » Mon Feb 05, 2018 2:25 pm

https://www.sifive.com/documentation/fr ... orm-brief/
Each U500 SoC can include a SiFive U5 Coreplex with 1–8 64-bit RISC-V cores with private caches and a shared L2 cache, DDR3/DDR4 DRAM channels, Dual Mode PCIe Gen 3.0, 1Gb Ethernet, USB 3.0, a platform- level interrupt controller, an on-chip debug unit, as well as an extensive selection of other peripheral devices. Al
I wonder what IP is included in Freedom U540 SoC.

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