xref: /openbmc/u-boot/doc/README.mpc74xx (revision e221174377d7e3ee848e014b96430d4c97023e93)
1*e2211743SwdenkThis file contains status information for the port of U-Boot to the
2*e2211743SwdenkMotorola mpc74xx series of CPUs.
3*e2211743Swdenk
4*e2211743SwdenkAuthor: Josh Huber <huber@mclx.com>
5*e2211743Swdenk	Mission Critical Linux, Inc.
6*e2211743Swdenk
7*e2211743SwdenkCurrently the support for these CPUs is pretty minimal, but enough to
8*e2211743Swdenkget things going.  (much like the support for the Galileo Eval Board)
9*e2211743Swdenk
10*e2211743SwdenkThere is a framework in place to enable the L2 cache, and to program
11*e2211743Swdenkthe BATs.  Currently, there are still problems with the code which
12*e2211743Swdenksets up the L2 cache, so it's not enabled. (IMHO, it shouldn't be
13*e2211743Swdenkanyway).  Additionally, there is support for enabling the MMU, which
14*e2211743Swdenkwe also don't do.  The BATs are programmed just for the benefit of
15*e2211743Swdenkjumping into Linux in a sane configuration.
16*e2211743Swdenk
17*e2211743SwdenkMost of the code was based on other cpus supported by U-Boot.
18*e2211743Swdenk
19*e2211743SwdenkIf you find any errors in the CPU setup code, please send us a note.
20*e2211743Swdenk
21*e2211743SwdenkThanks,
22*e2211743SwdenkJosh
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