Since attempt[1] to embed android specific boot param into fdt bootargs, a new idea is formed as to make use of env file to contain default param value. Current code logic is already working fine, unless the priority of param at begining is higher than at tail. From env file, bootargs is treated important, and prepend at begining. So there is a need to reverse the logic, and make sure default bootargs value at the end, and let androidboot img bootargs value sit at begining.
So a new kconfig item is introduced. Once enabled, the bootargs strcat param will get reversed. A similar logic is needed for fastboot->bootm glue function, so apply same trick to glue function too. Some one-liners patch is included to enable device driver for sc7180 soc. It is about iommu for usb, usb gadget vendor/product id. Reduce dependency on abootimg when androidboot v3 or greater is not needed. Since Tom suggested to reduce __maybe_unused directive and use IS_ENABLE() instead; two __weak func proto need to add into image.h This series is independent, but modified boot/Kconfig that roughly same location to another patch series[2], so directly apply both would fail. Please let me know if maintainer wanna to let the one gets applied first and rebase _OR_ combine two series as one. [1]https://lists.denx.de/pipermail/u-boot/2025-May/588828.html [2]https://lists.denx.de/pipermail/u-boot/2025-May/589926.html Signed-off-by: George Chan <gchan9...@gmail.com> --- Changes in v2: - Add new patch #2 that is same trick as #1 to fastboot->bootm glue layer. - Remove default n to patch #1, suggested by Tom. - Use IS_ENABLE() instead, suggested by Tom. - Collect review-by from Casey and Neil. - Rebase to u-boot/next branch. - CCing myself too. - Link to v1: https://lore.kernel.org/r/20250520-sc7180-android-boot-v1-0-3075a84ea...@gmail.com --- George Chan (5): image-android: Prepend/postpend default bootargs value with given bootcmd bootm: Append bootargs value when bootmeth_android provide cmdline boot: bootmeth_android: Conditionally dependent on abootimg iommu: qcom-smmu: Introduce sc7180 compatible string usb: gadget: Introduce usb gadget vendor/product default id for ARCH_QCOM boot/Kconfig | 7 +++++++ boot/bootm.c | 29 ++++++++++++++++++++++++++++- boot/bootmeth_android.c | 2 +- boot/image-android.c | 10 ++++++++-- drivers/iommu/qcom-hyp-smmu.c | 1 + drivers/usb/gadget/Kconfig | 2 ++ include/image.h | 3 ++- 7 files changed, 49 insertions(+), 5 deletions(-) --- base-commit: a822b95da4b799bdc2a42c06923af4359238dc9e change-id: 20250520-sc7180-android-boot-a845ecf48a48 Best regards, -- George Chan <gchan9...@gmail.com>
