Effective in 2026, to align with our trunk stable development model and ensure platform stability for the ecosystem, we will publish source code to AOSP in Q2 and Q4. For building and contributing to AOSP, use android-latest-release. The android-latest-release manifest branch will always reference the most recent release pushed to AOSP. For more information, see Changes to AOSP.
Bootloader support for SDV VM identity and attestation
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In addition to the requirements for an Android bootloader (ABL), to support
SDV virtual machine (VM) identity and attestation, the bootloader must
perform the following tasks. If the guest doesn't have an ABL, the guest loader
running on the host within the hypervisor must perform these tasks:
Additional kernel parameters
The SDV bootloader must pass the kernel parameters described in the
following sections.
androidboot.sdv.boot_mode
In addition to being present in the Android HLOS CDI certificate, the SDV
bootloader passes the SDV Boot Mode to the SDV VM as a kernel parameter
named androidboot.sdv.boot_mode.
Possible values are locked and unlocked.
androidboot.sdv.vvmfactorytrust
The VVMFactoryTrust is a SHA-256 hash value encoded as a case-insensitive,
64-character hexadecimal string. If the VVMFactoryTrust hasn't been written
or if it's not supported, the value of androidboot.sdv.vvmfactorytrust must
be the two-character string 00.
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Last updated 2026-06-26 UTC.
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