From PhoenixWiki

An enumerated value that describes the type of boot.

Prototype

typedef UINT32 EFI_BOOT_MODE;

#define BOOT_WITH_FULL_CONFIGURATION                  0x00
#define BOOT_WITH_MINIMAL_CONFIGURATION               0x01
#define BOOT_ASSUMING_NO_CONFIGURATION_CHANGES        0x02
#define BOOT_WITH_FULL_CONFIGURATION_PLUS_DIAGNOSTICS 0x03
#define BOOT_WITH_DEFAULT_SETTINGS                    0x04
#define BOOT_ON_S4_RESUME                             0x05
#define BOOT_ON_S5_RESUME                             0x06
#define BOOT_ON_S2_RESUME                             0x10
#define BOOT_ON_S3_RESUME                             0x11
#define BOOT_ON_FLASH_UPDATE                          0x12
#define BOOT_IN_RECOVERY_MODE                         0x20

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