2016-06-18 18:40 GMT+09:00 Linus Walleij <linus.wall...@linaro.org>: > On Fri, Jun 17, 2016 at 2:51 PM, Masahiro Yamada > <yamada.masah...@socionext.com> wrote: > >> There are two enable methods supported by ARM64 Linux; psci and >> spin-table. The latter is simpler and easier to use for quick SoC >> bring-up. >> >> So, I used the spin-table for my first ARMv8 SoC porting, but I >> found its support in U-Boot was poor. It is true there exists a >> code fragment for the spin code in arch/arm/cpu/armv8/start.S, >> but I see some problems: > > Is part of the motivation for this approach to boot an ARMv8 system > without using the ARM Trusted Firmware? > > Yours, > Linus Walleij
Yes, exactly. It would be the best choice to switch over to PSCI with ATF in a long run, but, I decided to use spin-table for the initial SoC bring-up because of tight schedule. If I use spin-table, I can keep the boot sequence very simple. -- Best Regards Masahiro Yamada _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot