canonical source for SD card components?

i want to summarize from where someone would get the following
software components to copy to an SD card:

  * MLO
  * u-boot.bin
  * uImage
  * root filesystem

as someone mentioned in an earlier post, both MLO and u-boot.bin
should be distro-independent (right?), so there should be a primary
source for those two bits, and this looks like a good location:

i can see the two files "MLO_revc_v3" and "u-boot_revc_v3.bin". can
anyone verify that those are acceptable images? who's responsible for
keeping them up to date? is this considered the canonical location
for generic images?

  (obviously, the uImage file and root filesystem will be
distro-dependent, so i'll deal with those separately.)