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efi_loader: describe EFI_VAR_FILE_MAGIC

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Add documentation for EFI_VAR_FILE_MAGIC used in the file format for UEFI
variables.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2020-07-16 07:18:40 +02:00
parent 7dda16343d
commit 627ab390d8
1 changed files with 5 additions and 1 deletions
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6
include/efi_variable.h
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@ -93,6 +93,10 @@ efi_status_t efi_query_variable_info_int(u32 attributes,
#define EFI_VAR_BUF_SIZE 0x4000
/*
* This constant identifies the file format for storing UEFI variables in
* struct efi_var_file.
*/
#define EFI_VAR_FILE_MAGIC 0x0161566966456255 /* UbEfiVa, version 1 */
/**
@ -116,7 +120,7 @@ struct efi_var_entry {
* struct efi_var_file - file for storing UEFI variables
*
* @reserved: unused, may be overwritten by memory probing
* @magic: identifies file format
* @magic: identifies file format, takes value %EFI_VAR_FILE_MAGIC
* @length: length including header
* @crc32: CRC32 without header
* @var: variables