On Tue, Sep 2, 2014 at 3:15 AM, Peter Maydell <[email protected]> wrote: > On 19 August 2014 01:54, Peter Crosthwaite <[email protected]> > wrote: >> Linux should boot in EL2 or EL1. If in EL3, jump down before handing >> off to Linux. >> >> Signed-off-by: Peter Crosthwaite <[email protected]> > > The other way we could do this would be to have the > do_cpu_reset() hook put the CPU into EL2 or EL1 before > starting the boot code. (This would be in line with how it > would work for KVM). >
Tried that at first, and the problem we found was it introduced a reset order dep. The arm-boot and CPU race on who sets the EL. > Have you thought about how this would work for > secondary CPUs (which boot via PSCI poweron)? > Not yet although I expect something similar. Currently I use a spin table elf which I load and entry-points for the secondaries (I have a bootloader patch out-of-tree that can do this) which does the reduction. It's pretty much the same routine as here so there might be some code share. Regards, Peter > thanks > -- PMM >
