linux-kernel - Re: [PATCH] arm64: dts: ti: k3-am64-main: Update the location of ATF in SRAM and increase its max size

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Date:   Mon, 7 Jun 2021 08:28:31 -0500
From:   Nishanth Menon <nm@...com>
To:     Aswath Govindraju <a-govindraju@...com>
CC:     Lokesh Vutla <lokeshvutla@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Suman Anna <s-anna@...com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: ti: k3-am64-main: Update the location of ATF
 in SRAM and increase its max size

On 22:13-20210604, Aswath Govindraju wrote:
> Due to a limitation for USB DFU boot mode, SPL load address has to be less
> than  or equal to 0x70001000. So, load address of SPL and ATF have been
> moved to 0x70000000 and 0x701a0000 respectively.
> 
> Also, the maximum size of ATF has been increased to 0x1c000 [1].
> 
> Therefore, update ATF's location and maximum size accordingly in the device
> tree file.
> 
> [1] - https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git/commit/?id=2fb5312f61a7de8b7a70e1639199c4f14a10b6f9
> 
> Signed-off-by: Aswath Govindraju <a-govindraju@...com>
> ---
> 
> Link to corresponding U-Boot series that makes the ATF load address update,
> - https://patchwork.ozlabs.org/project/uboot/list/?series=247265
> 
>  arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
> index ca59d1f711f8..7ae28992097f 100644
> --- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
> @@ -14,7 +14,7 @@
>  		ranges = <0x0 0x00 0x70000000 0x200000>;
>  
>  		atf-sram@0 {
	@0 should be @1a0000 ?
> -			reg = <0x0 0x1a000>;
> +			reg = <0x1a0000 0x1c000>;
>  		};
>  	};
>  
> -- 
> 2.17.1
> 

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D