linux-kernel - [PATCH V6 0/2] Enable crashdump collection support for IPQ9574

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Message-ID: <20230328102013.21361-1-quic_poovendh@quicinc.com>
Date:   Tue, 28 Mar 2023 15:50:11 +0530
From:   Poovendhan Selvaraj <quic_poovendh@...cinc.com>
To:     <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <lee@...nel.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     <quic_srichara@...cinc.com>, <quic_gokulsri@...cinc.com>,
        <quic_sjaganat@...cinc.com>, <quic_kathirav@...cinc.com>,
        <quic_arajkuma@...cinc.com>, <quic_anusha@...cinc.com>,
        <quic_devipriy@...cinc.com>
Subject: [PATCH V6 0/2] Enable crashdump collection support for IPQ9574

Crashdump collection is enabled based on the DLOAD bit in the TCSR register.
This bit is set during bootup and clearing during shutdown. During crash,
dload bit is not cleared, due to which uboot starts crashdump collection.

Enable the support for download mode to collect the crashdumps if
system crashes, to debug crashes extensively.

During the bootup, bootloaders initialize the SMEM. However the bootup
after crash, SMEM will not be initialized again. If the memory for the
SMEM is not reserved, linux consumes that region, which leads to the
loss of SMEM data. So, during the next bootup after crash, bootloaders
will hang due to invalid data present in the SMEM region. Due to this,
added the SMEM support along with crashdump collection series.

This patch series adds the support for crashdump collection.

DTS patch depends on the IPQ9574 baseport series
	https://lore.kernel.org/linux-arm-kernel/20230327132718.573-1-quic_devipriy@quicinc.com/

V6:
	- Dropped the below patches as it is already part of linux-next/master
          [1/5] dt-bindings: scm: Add compatible for IPQ9574
	  [2/5] dt-bindings: mfd: Add the tcsr compatible for IPQ9574
	- Dropping patch [5/5] firmware: scm: Modify only the DLOAD bit in TCSR
	  register for download mode as it is posted part of below series
	  https://lore.kernel.org/lkml/1676990381-18184-1-git-send-email-quic_mojha@quicinc.com/#r

V5 can be found at
	https://lore.kernel.org/linux-arm-kernel/20230216120012.28357-1-quic_poovendh@quicinc.com/

V4 can be found at
	https://lore.kernel.org/linux-arm-kernel/20230214051414.10740-1-quic_poovendh@quicinc.com/

V3 can be found at
	https://lore.kernel.org/linux-arm-msm/20230208053332.16537-1-quic_poovendh@quicinc.com/

Changes in V2:
	- rebased on linux-next/master
	- dropped co-developed by tag wherever applicable
	- V1 can be found at
	  https://lore.kernel.org/linux-arm-kernel/20230113160012.14893-1-quic_poovendh@quicinc.com/

Poovendhan Selvaraj (2):
  arm64: dts: qcom: ipq9574: Enable the download mode support
  arm64: dts: qcom: ipq9574: Add SMEM support

 arch/arm64/boot/dts/qcom/ipq9574.dtsi | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)


base-commit: a6faf7ea9fcb7267d06116d4188947f26e00e57e
-- 
2.17.1