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https://www.efi.com/support-and-downloads/product-support/
Get the latest product support information, including phone numbers, email addresses, support sites for your EFI digital printers and productivity software.
https://sites.google.com/site/uefiforth/bios/uefi/uefi/4-efi-system-table/4-5-efi-runtime-services-table
} EFI_RUNTIME_SERVICES; Parameters Hdr. The table header for the EFI Runtime Services Table. This header contains the EFI_RUNTIME_SERVICES_SIGNATURE and EFI_RUNTIME_SERVICES_REVISION values along with the size of the EFI_RUNTIME_SERVICES structure and a32-bit CRC to verify that the contents of the EFI Runtime Services Table are valid. …
https://software.intel.com/en-us/articles/uefi-services
Mar 21, 2011 · UEFI Curricula. About UEFI. UEFI-Framework Course Contents. Introduction to PC Architecture. UEFI Introduction. UEFI Boot Manager. UEFI Services. UEFI Drivers. Labs. References. Potential Research Topics. Agenda • Describe UEFI Services – Boot Services – Runtime Services Boot Services • Events and notifications –Polled devices, no ...
http://blog.frizk.net/2017/01/attacking-uefi-and-linux.html
Jan 11, 2017 · The EFI Runtime Services lives on even after the operating system is loaded and running though. They provide various functionality that the operating system can call into. The UEFI specification specifies a fixed set of functions that the Runtime Services should provide to the operating system, as seen below.
https://uefi.org/sites/default/files/resources/UEFI-Plugfest-WindowsBootEnvironment.pdf
Runtime Services Usage Minimal amount of runtime services are used at OS runtime. Windows uses only UEFI variable services Windows philosophy is give preference to OS native drivers followed by ACPI runtime support Only use UEFI runtime services when required (and not supported by other preferred options)
http://lkml.iu.edu/hypermail/linux/kernel/0710.3/2326.html
> > > > EFI runtime > > > > services initialization are implemented in efi.c. Some x86_64 > > > > specifics are worth noting here. On x86_64, parameters passed to UEFI > > > > firmware services need to follow the UEFI calling convention. For this
https://vzimmer.blogspot.com/2012/12/accessing-uefi-form-operating-system.html
Dec 18, 2012 · Accessing UEFI from the operating system runtime ... UEFI runtime services are always available in the pre-OS, namely during the boot services (BS) phase. ... the Linux kernel added support for an efivarfs filesystem in v3.7 which will be the preferred method of accessing EFI …Author: Vincent Zimmer
https://www.efi.com/about-efi/contact-us/
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