If we build >1 DRM driver into the kernel, we get this lovely output..

[drm] Initialized tdfx 1.0.0 20010216 on minor 0
[drm] AGP 0.100 aperture @ 0xe0000000 64MB
[drm] Initialized r128 2.3.0 20021029 on minor 1
[drm] AGP 0.100 aperture @ 0xe0000000 64MB
[drm] Initialized radeon 1.8.0 20020828 on minor 2
[drm] AGP 0.100 aperture @ 0xe0000000 64MB
[drm] Initialized mga 3.1.0 20021029 on minor 3
[drm] AGP 0.100 aperture @ 0xe0000000 64MB
[drm] Initialized i810 1.2.1 20020211 on minor 4
[drm] AGP 0.100 aperture @ 0xe0000000 64MB
[drm] Initialized i830 1.3.2 20021108 on minor 5

agpgart already outputs the info about the aperture address & size
before drm initialises, so its just repetition for no purpose.