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efi_loader: optional persistence of variables

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Since be66b89da3 ("efi_loader: configuration of variables store")
the choice of EFI_VARIABLE_FILE_STORE or EFI_MM_COMM_TEE
is mutually-exclusive, however efi_var_to_file also allows
for "neither". Provide an additional Kconfig option.

Signed-off-by: Tom Saeger <tom.saeger@oracle.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
This commit is contained in:
Tom Saeger 2022-03-22 15:21:10 -06:00 committed by Heinrich Schuchardt
parent 2f5c9ad3f4
commit f2288a26ab
1 changed files with 8 additions and 1 deletions
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9
lib/efi_loader/Kconfig
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@ -62,11 +62,18 @@ config EFI_MM_COMM_TEE
variable related operations to that. The application will verify,
authenticate and store the variables on an RPMB.
config EFI_VARIABLE_NO_STORE
bool "Don't persist non-volatile UEFI variables"
help
If you choose this option, non-volatile variables cannot be persisted.
You could still provide non-volatile variables via
EFI_VARIABLES_PRESEED.
endchoice
config EFI_VARIABLES_PRESEED
bool "Initial values for UEFI variables"
depends on EFI_VARIABLE_FILE_STORE
depends on !EFI_MM_COMM_TEE
help
Include a file with the initial values for non-volatile UEFI variables
into the U-Boot binary. If this configuration option is set, changes