On Mon, 2014-07-21 at 22:39 +0200, Jeroen Hofstee wrote: > Hello Ian, > > On 21-07-14 22:07, Ian Campbell wrote: > > On Fri, 2014-07-18 at 20:47 +0200, Jeroen Hofstee wrote: > >> Hello Siarhei, > >> > >> On 18-07-14 19:09, Siarhei Siamashka wrote: > >>> This is needed to have feature parity with the normal boot mode, > >>> where the L2EN bit in the CP15 Auxiliary Control Register is set > >>> by the BROM code right from the start. > >>> > >>> If this is not done, the Linux system ends up booted with the L2 cache > >>> disabled. > >>> > >> I don't know a single about the sunxi, but shouldn't linux > >> be patched instead. The commit message seems to indicate > >> it is not an u-boot issue. > > The ACTLR may not be writeable from NS mode so it has to be setup in the > > bootloader before dropping to NS mode. > mmm, I guess there is something wrong with the boot sequence > if the kernel itself can't access raw hw.
Do you know what ARM Secure and Non-Secure worlds are? The kernel expects to be launched in NS mode and simply cannot access this register. This is a feature not a bug. Ian. -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
