[PATCH 0/4] firmware: qcom: scm: Add minidump SRAM destination support

[Mukesh Ojha]

On most Qualcomm SoCs where minidump is supported, a word in always-on
SRAM is shared between the kernel and boot firmware. Before DDR is
initialised on the warm reset following a crash, firmware reads this
word to decide if minidump is enabled and collect a minidump and where
to deliver it (USB upload to a host, or save to local storage).

This series wires that mechanism into the SCM driver:

  - The SRAM word location is described via a 'sram'/'sram-names'
    phandle pair on the SCM DT node, keeping it decoupled from the
    driver and extensible to future SoCs.

  - A 'minidump_dest' module parameter (default: usb) selects the
    destination.  Custom kernel_param_ops expose it as the human-
    readable strings "usb" or "storage".

  - Add the support for Kaanapali.

Suggested-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/lkml/b33938e9-bb5c-4743-866d-4cdccf808a02@xxxxxxxxxxxxxxxx/
Signed-off-by: Mukesh Ojha <mukesh.ojha@xxxxxxxxxxxxxxxx>



Mukesh Ojha (4):
  dt-bindings: firmware: qcom,scm: Add minidump SRAM property
  firmware: qcom: scm: use dev_err_probe() for dload address failure
  firmware: qcom: scm: Add minidump SRAM support
  arm64: dts: qcom: kaanapali: Add minidump SRAM config to SCM node

 .../bindings/firmware/qcom,scm.yaml           | 57 +++++++++++
 arch/arm64/boot/dts/qcom/kaanapali.dtsi       |  6 ++
 drivers/firmware/qcom/qcom_scm.c              | 98 ++++++++++++++++++-
 3 files changed, 160 insertions(+), 1 deletion(-)

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2.53.0