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Re: [RFC PATCH 2/5] hw/intc: Add Nuclei ECLIC device


From: Wang Junqiang
Subject: Re: [RFC PATCH 2/5] hw/intc: Add Nuclei ECLIC device
Date: Tue, 11 May 2021 11:18:32 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0



On 2021/5/10 下午1:26, Bin Meng wrote:
On Mon, May 10, 2021 at 10:27 AM Bin Meng <bmeng.cn@gmail.com> wrote:

On Mon, May 10, 2021 at 10:21 AM Alistair Francis <alistair23@gmail.com> wrote:

On Fri, May 7, 2021 at 11:24 PM wangjunqiang <wangjunqiang@iscas.ac.cn> wrote:

This patch provides an implementation of Nuclei ECLIC Device.
Nuclei processor core have been equipped with an Enhanced Core Local
Interrupt Controller (ECLIC), which is optimized based on the RISC-V
standard CLIC, to manage all interrupt sources.

https://doc.nucleisys.com/nuclei_spec/isa/eclic.html

Hello,

There are patches on the QEMU list adding support for the CLIC. How
different is the ECLIC from the CLIC? Could you use the CLIC as a
starting point instead of implementing a new interrupt controller?


That's my thought too when I saw this patch at first.

A better way is to scandalize the CLIC support in QEMU first, then we

Sorry for the typo. I meant to say: standardize the CLIC support

will see how Nuclei's eCLIC could be built on top of that. Thanks!

Regards,
Bin


I agree with both of you.the CLIC support in QEMU first. I read the patch of clic, and there is no problem with compatibility in the target/riscv directory.I will split eclic in next version. Thanks

Regards
Wang Junqiang




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