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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Message-ID: <aeac5b8c-033c-986d-485a-d06b44e14786@ti.com>
Date:   Mon, 7 Jun 2021 19:00:24 +0530
From:   Aswath Govindraju <a-govindraju@...com>
To:     Nishanth Menon <nm@...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

Hi Nishanth,

On 07/06/21 6:58 pm, Nishanth Menon wrote:
> 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 ?

Sorry, forgot to make this change. Will correct this in the respin.

Thanks,
Aswath

>> -			reg = <0x0 0x1a000>;
>> +			reg = <0x1a0000 0x1c000>;
>>  		};
>>  	};
>>  
>> -- 
>> 2.17.1
>>
>