D. Appendix D — Status Codes

EFI interfaces return an EFI_STATUS code. See EFI_STATUS Success Codes (High Bit Clear) , EFI_STATUS Error Codes (High Bit Set) , EFI_STATUS Warning Codes (High Bit Clear) list these codes for success, errors, and warnings, respectively. The range of status codes that have the highest bit set and the next to highest bit clear are reserved for use by EFI. The range of status codes that have both the highest bit set and the next to highest bit set are reserved for use by OEMs. Success and warning codes have their highest bit clear, so all success and warning codes have positive values. The range of status codes that have both the highest bit clear and the next to highest bit clear are reserved for use by EFI. The range of status code that have the highest bit clear and the next to highest bit set are reserved for use by OEMs. The Table below lists the status code ranges described above.

Table D.1 EFI_STATUS Code Ranges

Supported 32-bit Range

Supported 64-bit Architecture Ranges

Description

0x00000000-0x1fffffff

0x00000000000000 00-0x1fffffffffffffff

Warning codes reserved for use by UEFI main specification.

0x20000000-0x3fffffff

0x20000000000000 00-0x3fffffffffffffff

Warning codes reserved for use by the Platform Initialization Architecture Specification.

0x40000000- 0x7fffffff

0x4000000000000000- 0x7fffffffffffffff

Warning codes reserved for OEM usage.

0x80000000-0x9fffffff

0x80000000000000 00-0x9fffffffffffffff

Error codes reserved for use by UEFI main spec.

0xa0000000-0xbfffffff

0xa0000000000000 00-0xbfffffffffffffff

Error codes reserved for use by the Platform Initialization Architecture Specification.

0xc0000000- 0xffffffff

0xc000000000000000- 0xcfffffffffffffff

Error codes reserved for OEM usage.

Table D.2 EFI_STATUS Success Codes (High Bit Clear)

Mnemonic

Value

Description

EFI_SUCCESS

0

The operation completed successfully.

Table D.3 EFI_STATUS Error Codes (High Bit Set)

Mnemonic

Value

Description

EFI_LOAD_ERROR

1

The image failed to load.

EFI_INVALID_PARAMETER

2

A parameter was incorrect.

EFI_UNSUPPORTED

3

The operation is not supported.

EFI_BAD_BUFFER_SIZE

4

The buffer was not the proper size for the request.

EFI_BUFFER_TOO_SMALL

5

The buffer is not large enough to hold the requested data. The required buffer size is returned in the appropriate parameter when this error occurs.

EFI_NOT_READY

6

There is no data pending upon return.

EFI_DEVICE_ERROR

7

The physical device reported an error while attempting the operation.

EFI_WRITE_PROTECTED

8

The device cannot be written to.

EFI_OUT_OF_RESOURCES

9

A resource has run out.

EFI_VOLUME_CORRUPTED

10

An inconstancy was detected on the file system causing the operating to fail.

EFI_VOLUME_FULL

11

There is no more space on the file system.

EFI_NO_MEDIA

12

The device does not contain any medium to perform the operation.

EFI_MEDIA_CHANGED

13

The medium in the device has changed since the last access.

EFI_NOT_FOUND

14

The item was not found.

EFI_ACCESS_DENIED

15

Access was denied.

EFI_NO_RESPONSE

16

The server was not found or did not respond to the request.

EFI_NO_MAPPING

17

A mapping to a device does not exist.

EFI_TIMEOUT

18

The timeout time expired.

EFI_NOT_STARTED

19

The protocol has not been started.

EFI_ALREADY_STARTED

20

The protocol has already been started.

EFI_ABORTED

21

The operation was aborted.

EFI_ICMP_ERROR

22

An ICMP error occurred during the network operation.

EFI_TFTP_ERROR

23

A TFTP error occurred during the network operation.

EFI_PROTOCOL_ERROR

24

A protocol error occurred during the network operation.

EFI_INCOMPATIBLE_VERSION

25

The function encountered an internal version that was incompatible with a version requested by the caller.

EFI_SECURITY_VIOLATION

26

The function was not performed due to a security violation.

EFI_CRC_ERROR

27

A CRC error was detected.

EFI_END_OF_MEDIA

28

Beginning or end of media was reached

EFI_END_OF_FILE

31

The end of the file was reached.

EFI_INVALID_LANGUAGE

32

The language specified was invalid.

EFI_COMPROMISED_DATA

33

The security status of the data is unknown or compromised and the data must be updated or replaced to restore a valid security status.

EFI_IP_ADDRESS_CONFLICT

34

There is an address conflict address allocation

EFI_HTTP_ERROR

35

A HTTP error occurred during the network operation.

Table D.4 EFI_STATUS Warning Codes (High Bit Clear)

Mnemonic

Value

Description

EFI_WARN_UNKNOWN_GLYPH

1

The string contained one or more characters that the device could not render and were skipped.

EFI_WARN_DELETE_FAILURE

2

The handle was closed, but the file was not deleted.

EFI_WARN_WRITE_FAILURE

3

The handle was closed, but the data to the file was not flushed properly.

EFI_WARN_BUFFER_TOO_SMALL

4

The resulting buffer was too small, and the data was truncated to the buffer size.

EFI_WARN_STALE_DATA

5

The data has not been updated within the timeframe set by local policy for this type of data.

EFI_WARN_FILE_SYSTEM

6

The resulting buffer contains UEFI-compliant file system.

EFI_WARN_RESET_REQUIRED

7

The operation will be processed across a system reset.