linux-hardening - Re: [PATCH v2 3/6] docs: qcom: Add qualcomm minidump guide

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Message-ID: <24ec8534-60a4-b308-0831-9ab6b983d902@linaro.org>
Date:   Thu, 13 Apr 2023 23:31:36 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Mukesh Ojha <quic_mojha@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, konrad.dybcio@...aro.org, corbet@....net,
        keescook@...omium.org, tony.luck@...el.com, gpiccoli@...lia.com,
        catalin.marinas@....com, will@...nel.org
Cc:     linux-arm-msm@...r.kernel.org, linux-remoteproc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH v2 3/6] docs: qcom: Add qualcomm minidump guide



On 22/03/2023 13:30, Mukesh Ojha wrote:
> +Dump collection
> +---------------
> +
> +The solution supports extracting the minidump produced either over USB or
> +stored to an attached storage device.
> +
> +By default, dumps are downloaded via USB to the attached x86_64 machine
> +running PCAT (Qualcomm tool) software. Upon download, we will see

Are these both PCAT and dexter tools public?

--srini
> +a set of binary blobs starts with name md_* in PCAT configured directory
> +in x86_64 machine, so for above example from the client it will be
> +md_REGION_A.BIN. This binary blob depends on region content to determine
> +whether it needs external parser support to get the content of the region,
> +so for simple plain ASCII text we don't need any parsing and the content
> +can be seen just opening the binary file.
> +
> +To collect the dump to attached storage type, one need to write appropriate
> +value to IMEM register, in that case dumps are collected in rawdump
> +partition on the target device itself.
> +
> +One need to read the entire rawdump partition and pull out content to
> +save it onto the attached x86_64 machine over USB. Later, this rawdump
> +can be pass it to another tool dexter.exe(Qualcomm tool) which converts
> +this into the similar binary blobs which we have got it when download type
> +was set to USB i.e a set of registered region as blobs and their name
> +starts with md_*.
> -- 2.7.4