EFI framebuffer driver

modulename: efidrm.ko

configname: CONFIG_DRM_EFIDRM

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>Drivers for system framebuffers
└─>EFI framebuffer driver
In linux kernel since version 6.1.145 (release Date: 2025-07-14)  
DRM driver for EFI framebuffers.

This driver assumes that the display hardware has been initialized
by the firmware or bootloader before the kernel boots. Scanout
buffer, size, and display format must be provided via EFI interfaces.

source code:
drivers/gpu/drm//sysfb/efidrm.c