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Beyond BIOS
book

Beyond BIOS

by Vincent Zimmer, Michael Rothman, Suresh Marisetty
January 2017
Intermediate to advanced
322 pages
8h 17m
English
De Gruyter
Content preview from Beyond BIOS

Appendix B – Status Codes

Most UEFI interfaces return an EFI_STATUS code. Table B.1 lists the status code ranges. Tables B.2, B.3, and B.4 list these codes for success, errors, and warnings, respectively. Error codes also have their highest bit set, so all error codes have negative values. The range of status codes that have the highest bit set and the next to highest bit clear are reserved for use by UEFI. 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 ...

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Publisher Resources

ISBN: 9781501505836