Support optional dtb loading via UKI #622
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lumag
requested changes
Aug 21, 2024
lumag
requested changes
Aug 30, 2024
UEFI provides default compatible DTB. If a DTB is present in UKI, systemd-boot passes the same to Linux instead of UEFI provided DTB. This optional overriding of DTB via UKI allows the users to customize DTBs as per product needs without regenerating the firmware. To override DTB via UKI, users need to set EFI_LINUX_IMG_DTB to an appropriate dtb file name. For example EFI_LINUX_IMG_DTB = "qcs6490-rb3gen2.dtb" Signed-off-by: Viswanath Kraleti <quic_vkraleti@quicinc.com>
With updated boot flow, UEFI provides a compatible DTB by default. To override this, there is a provision in UKI to have a DTB of choice. When these two are in place, there is no need to explicilty pack DTBs into esp. Signed-off-by: Viswanath Kraleti <quic_vkraleti@quicinc.com>
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lumag
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Sep 5, 2024
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If a DTB is present in UKI, systemd-boot can override the default UEFI provided DTB. This provisioning of DTB via UKI allows the users to customize DTBs as per product needs without regenerating the firmware.