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efi_loader: utility function to check the variable name is "Boot####"

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Some commands need to enumerate the existing UEFI load
option variable("Boot####"). This commit transfers some code
from cmd/efidebug.c to lib/efi_loder/, then exposes
efi_varname_is_load_option() function to check whether
the UEFI variable name is "Boot####".

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
This commit is contained in:
Masahisa Kojima 2022-12-02 13:59:35 +09:00 • committed by Heinrich Schuchardt
parent 78b1ccc430
commit 3ac026ae46
3 changed files with 35 additions and 22 deletions
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include/efi_loader.h
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@ -707,6 +707,7 @@ int algo_to_len(const char *algo);
int efi_link_dev(efi_handle_t handle, struct udevice *dev);
int efi_unlink_dev(efi_handle_t handle);
bool efi_varname_is_load_option(u16 *var_name16, int *index);
/**
* efi_size_in_pages() - convert size in bytes to size in pages