Hello Linus,
Linus Walleij wrote:
On Thu, Jul 14, 2011 at 1:39 PM, Wolfgang Denk wd@denx.de wrote:
Sorry, but again I have to point out that I really dislike papering over existing bugs. If the disable D-cache in bootm does not work, _this_ should be analyzed and fixed instead of globally disabling he data cache.
No problem, I didn't label it as RFC since what it does is actually fix a regression.
At one point U-boot was working on the Integrator and now it doesn't, it seems commit 880eff5cfb9df6f0855f4e48affd349ca64692e9 "ARM: cp15: setup mmu and enable dcache" is causing it.
Heiko, Alessandro, do you have any hints on how to go about flushing and disabling the D-cache in bootm for ARM920T? It doesn't seem to work on this ARM CPU chip in its current form...
Hmm.. trying bootm with actual u-boot on a davinci (arm926ejs) based board, there I couldn;t use the Davinci-EMAC (if I disable the dcache it works ...)
Seems above commit introduced problems for other arm architectures, drivers, ...
Hmm... if we globally always enable the dcache, we have a lot of more drivers to fix (I think) ...
bye, Heiko