lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:   Tue, 19 Oct 2021 14:10:19 +0800
From:   Guo Ren <guoren@...nel.org>
To:     Heinrich Schuchardt <heinrich.schuchardt@...onical.com>
Cc:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Guo Ren <guoren@...ux.alibaba.com>,
        Bin Meng <bmeng.cn@...il.com>, Xiang W <wxjstz@....com>,
        Samuel Holland <samuel@...lland.org>,
        Atish Patra <atish.patra@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Anup Patel <anup.patel@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        OpenSBI <opensbi@...ts.infradead.org>
Subject: Re: [PATCH 1/1] dt-bindings: reg-io-width for SiFive CLINT

On Fri, Oct 15, 2021 at 6:10 PM Heinrich Schuchardt
<heinrich.schuchardt@...onical.com> wrote:
>
> The CLINT in the T-HEAD 9xx processors do not support 64bit mmio access to
> the MTIMER device. The current schema does not allow to specify this.
>
> OpenSBI currently uses a property 'clint,has-no-64bit-mmio' to indicate the
> restriction. Samuael Holland suggested in
> lib: utils/timer: Use standard property to specify 32-bit I/O
> https://github.com/smaeul/opensbi/commit/b95e9cf7cf93b0af16fc89204378bc59ff30008e
> to use "reg-io-width = <4>;" as the reg-io-width property is generally used
> in the devicetree schema for such a condition.
>
> A release candidate of the ACLINT specification is available at
> https://github.com/riscv/riscv-aclint/releases
>
> Add reg-io-width as optional property to the SiFive Core Local Interruptor.
>
> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@...onical.com>
> ---
>  Documentation/devicetree/bindings/timer/sifive,clint.yaml | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/timer/sifive,clint.yaml b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
> index a35952f48742..266012d887b5 100644
> --- a/Documentation/devicetree/bindings/timer/sifive,clint.yaml
> +++ b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
> @@ -41,6 +41,13 @@ properties:
>    reg:
>      maxItems: 1
>
> +  reg-io-width:
> +    description: |
> +      Some CLINT implementations, e.g. on the T-HEAD 9xx, only support

         ^^^^^^^^^^^ -> allwinner d1, new version of our processors
would support 64bit access
> +      32bit access for MTIMER.
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    const: 4
> +
>    interrupts-extended:
>      minItems: 1
>
> --
> 2.32.0
>
>
> --
> opensbi mailing list
> opensbi@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/opensbi



-- 
Best Regards
 Guo Ren

ML: https://lore.kernel.org/linux-csky/

Powered by blists - more mailing lists