[U-Boot] [PATCH 3/3] mpc83xx: turn on icache in core initialization to improve u-boot boot time

Kim Phillips kim.phillips at freescale.com
Mon Apr 19 22:23:45 CEST 2010


On Fri, 16 Apr 2010 20:06:02 +0300
Michael Zaidman <michael.zaidman at gmail.com> wrote:

> On Fri, Apr 16, 2010 at 1:36 AM, Kim Phillips
> <kim.phillips at freescale.com> wrote:
> > before, MPC8349ITX boots u-boot in 4.3sec:
> [snip]
> > after, MPC8349ITX boots u-boot in 3.0sec:
> 
> Thanks for the good news! Memory POST test on my board with icach
> disabled was lasting for hours until I enabled icach locally before
> and disabled it after time consuming tests.
> 
> BTW is there any reason that you enable icach in board specific rather
> than in common code?

not really, was just following the existing HID0-setting paradigm -
I presume the paradigm came about to allow different cpu/board
combinations to enable/disable different HID bits.  Does that not sound
valid to you?

Kim


More information about the U-Boot mailing list