[Backport wrynose] u-boot-qcom: enable EFI runtime variable store for efivar#2608
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Ricardo Salveti (ricardosalveti) merged 1 commit intoJul 2, 2026
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Enable CONFIG_EFI_RT_VOLATILE_STORE so U-Boot supports SetVariable at runtime on its in-RAM EFI variable backend. With this U-Boot advertises EFI_RT_SUPPORTED_SET_VARIABLE in the RT properties table and creates the RTStorageVolatile and VarToFile EFI variables. These variables are what userspace needs to persist runtime EFI variable changes: RTStorageVolatile names the variable store file relative to the ESP (ubootefi.var) and VarToFile holds the binary dump of the variables to write back. The efivar SetVariableRT backport in oe-core uses them to sync changes to the ESP so they survive reboots; without this option SetVariable at runtime returns EFI_UNSUPPORTED and efivar cannot work. CONFIG_EFI_RT_VOLATILE_STORE depends on CONFIG_EFI_VARIABLE_FILE_STORE, so select that explicitly in the fragment to keep the option from being silently dropped should the dependency default ever change. Signed-off-by: Ricardo Salveti <ricardo.salveti@oss.qualcomm.com> (cherry picked from commit 038895c)
Dmitry Baryshkov (lumag)
approved these changes
Jun 24, 2026
Ricardo Salveti (ricardosalveti)
approved these changes
Jul 2, 2026
Ricardo Salveti (ricardosalveti)
merged commit 2729f39
into
wrynose
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Description
Backport of #2513 to
wrynose.