EDK II Module Writer's Guide
Search…
EDK II Module Writer's Guide
EDK II Module Writer's Guide
Tables
Figures
1 The Basics of EDK II
2 An EDK II Package
3 Module Development
4 UEFI Applications
5 UEFI Drivers
5.1 Begin With INF File
5.2 Write the UEFI Driver entry point
5.3 Get Service Tables
5.4 Communication between UEFI Drivers
6 SEC Module
7 Pre-EFI Initialization Modules
8 DXE Drivers: non-UEFI drivers
Appendix A Dynamic PCD
Powered By GitBook
5.3 Get Service Tables
UEFI drivers may consume the UEFI Boot Services, UEFI Runtime Services, and UEFI System Tables that are defined in the UEFI Specification.
EDK II provides the UefiBootServicesTableLib and UefiRuntimeServicesTableLib libraries to facilitate developer to access those services. The following table lists the global variables provided by those libraries.

Table 10 Table Global Variables

​
Global variable
Library Class
UEFI System Table
gST
UefiBootServicesTableLib
UEFI Boot Services Table
gBS
​
UEFI Runtime Services Table
gRT
UefiRuntimeServicesTableLib
Previous
5.2 Write the UEFI Driver entry point
Next
5.4 Communication between UEFI Drivers
Last modified 1yr ago
Copy link
Contents
Table 10 Table Global Variables