On 11/11/2016 05:58 AM, Ryan Harkin wrote: > Hi Alison, > > 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> >
Great! Thanks to Ryan and Alison to work this out. York _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
