[PATCH 0/4] Qualcomm: expand capsule update support

[Caleb Connolly]

On 3/26/25 18:40, Caleb Connolly wrote:
> The initial capsule update support only worked on the RB3 Gen 2 and made
> a lot of assumptions specific to that board.
> 
> Implement the logic necessary to update U-Boot no matter where it was
> flashed to, independent of any particular board.
> 
> First, we keep track of how U-Boot was loaded, specifically if we had a
> valid external FDT (even if we didn't use it) this indicates that we
> were booted via the Android bootloader, in this case the target for
> capsule updates is the boot partition. Otherwise, we target the uefi
> partition (if it exists) or the xbl partition. We handle A/B support for
> all 3 (currently we always flash to the currently active partition with
> a minor exception for the uefi partition).
> 
> We introduce two new fw_name strings to differentiate the GUIDs based on
> the target partition, this means one board can support multiple boot
> methods with capsule update support for all of them (typically this
> would be chainloading OR flashing U-Boot to XBL).
> 
> Lastly, the call to scsi_scan() in dfu_scsi.c is removed. Since
> scsi_scan() unbinds all scsi devices it breaks device handles maintained
> in the EFI layer for the duration of the capsule update process and
> causes the EFI filesystem access to delete the capsule file after the
> update to fail.
> 
> Boards should instead be responsible for calling scsi_scan() before
> initiating DFU.

Forgot to mention: this has been tested on the OnePlus 6 (with U-Boot in 
the boot partition - chainloaded), the rb3 (with U-Boot flashed to xbl), 
and the rb3gen2 (With u-boot flashed to uefi).

More testing is very welcome!
> 
> ---
> Caleb Connolly (4):
>        mach-snapdragon: track boot source
>        mach-snapdragon: CapsuleUpdate: support all boot methods
>        dfu: scsi: don't call scsi_scan()
>        qcom_defconfig: enable capsule update support
> 
>   arch/arm/mach-snapdragon/board.c          |  25 +++
>   arch/arm/mach-snapdragon/capsule_update.c | 256 +++++++++++++++++++++++-------
>   arch/arm/mach-snapdragon/qcom-priv.h      |  14 ++
>   configs/qcm6490_defconfig                 |   6 -
>   configs/qcom_defconfig                    |   3 +
>   drivers/dfu/dfu_scsi.c                    |   5 -
>   6 files changed, 245 insertions(+), 64 deletions(-)
> ---
> base-commit: 68ac813c70d991ec518d0fd815efdb10a05958c0
> 
> Caleb Connolly <caleb.connolly at linaro.org>
> 

-- 
Caleb (they/them)