> On 10 November 2016 at 02:49, Alison Wang <b18...@freescale.com> wrote: > > This series is to support loading a 32-bit OS, the execution state > will change from AArch64 to AArch32 when jumping to kernel. The > architecture information will be got through checking FIT image, then > U-Boot will load 32-bit OS or 64-bit OS automatically. > > > > Spin-table method is used for secondary cores to load 32-bit OS. > > The architecture information will be got through checking FIT image > and saved in the os_arch element of spin-table, then the secondary > cores will check os_arch and jump to 32-bit OS or 64-bit OS > automatically. > > > > PSCI method can also be used for secondary cores to load 32-bit OS. > > As PSCI and secure monitor firmware framework are enabled, loading > 32-bit OS is supported in such case. The default target exception level > returned to U-Boot is EL2, so the corresponding work to switch to > AArch32 EL2 and jump to 32-bit OS are done in U-Boot and secure > firmware together. > > > > --------------------------------------- > > Changes in v8: > > - Fix the issue when U-Boot is running in EL2 or EL1. > > Thanks for sticking with this. Great news: it works for my setup. > > I tested booting an arm64 kernel on FVP Foundation and AEMv8 modes and > on Juno R0, R1 and R2. I also tested and Versatile Express TC2 can > still load it's Aarch32 kernel. > > I didn't test running an Aarch32 kernel or any of the new functionality > on my ARMv8 platforms. > > But I checked and the patches are bisect-able on my ARMv8 platforms. > > Tested-by: Ryan Harkin <ryan.har...@linaro.org> > [Alison Wang] Thanks for your verification.
Best Regards, Alison Wang _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
