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SubjectRe: [PATCH 2/2] arm64: dts: qcom: sm8450: Add IMEM and PIL info region
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On 2/4/2023 3:07 AM, Konrad Dybcio wrote:
>
>
> On 3.02.2023 18:04, Mukesh Ojha wrote:
>> Add a simple-mfd representing IMEM on SM8450 and define the PIL
>> relocation info region, so that post mortem tools will be able
>> to locate the loaded remoteprocs.
>>
>> Signed-off-by: Mukesh Ojha <quic_mojha@quicinc.com>
>> ---
> From XBL:
>
> 0x14680000, 0x0002A000, "IMEM Base"
>
> Is there anything in that wider address range that would interest
> us? I recall Alex once dug into that when diving into IPA, but
> I can not recall the conclusion..
Spec-wise, yes IPA do own these 0x146A8000 - 0x146AA000 .
But, not sure what they use it for.

-Mukesh
>
> Konrad
>> arch/arm64/boot/dts/qcom/sm8450.dtsi | 15 +++++++++++++++
>> 1 file changed, 15 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi
>> index 5704750..474ea1b 100644
>> --- a/arch/arm64/boot/dts/qcom/sm8450.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi
>> @@ -3536,6 +3536,21 @@
>> };
>> };
>>
>> + sram@146aa000 {
>> + compatible = "qcom,sm8450-imem", "syscon", "simple-mfd";
>> + reg = <0 0x146aa000 0 0x1000>;
>> +
>> + #address-cells = <1>;
>> + #size-cells = <1>;
>> +
>> + ranges = <0 0 0x146aa000 0x1000>;
>> +
>> + pil-reloc@94c {
>> + compatible = "qcom,pil-reloc-info";
>> + reg = <0x94c 0xc8>;
>> + };
>> + };
>> +
>> apps_rsc: rsc@17a00000 {
>> label = "apps_rsc";
>> compatible = "qcom,rpmh-rsc";

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