Hi, On Tue, Jun 14, 2016 at 3:01 PM, <macro.wav...@gmail.com> wrote: > From: Hongbo Zhang <hongbo.zh...@nxp.com> > > v5 changes: > - Give up fixing the potential bug of PSCI stack overlap with secure text end > when there is more CPUs in system. Because I just want to keep this series as > simple as it could be: adding basic PSCI v1.0 support and adding more PSCI > v1.0 implements of our platform. > While too compplicated patches in assembly language won't call for effective > reviews, even I think there is potential bug of PSCI stack, let's fix it in > sepetated patch later.
I've done some patches fixing the stack allocation issue: https://github.com/wens/u-boot-sunxi/commits/c-psci-part2 These patches are ready, but I want to add a secure data section still. The data section will be for variables such as target PC, core/cluster power status, context ID, etc.. IMHO this is better than putting stuff at the top or bottom of the stack, and can also be referenced directly. Regards ChenYu > - Move the patch of factoring out psci_cpu_on_common to earlier place 2/8, so > that the following patches can only update the psci_cpu_on_common instead of > touching each platform's psci_cpu_on, this reduces patches size obviously and > make it easier for review. > > v4 changes: > - since there is already PSCI v0.2 function IDs definition merged in 5a07abb, > I give up my previous patches 1/11 and 2/11, and move previous 7/11 "ARMv7: > PSCI: add PSCI v1.0 functions skeleton" as current first one 1/9 > - accept Andre's comment to add the missed "arm,psci-0,2" into compatible > string > > v3 changes: > - patch 3/11, re-init the stack pointer to address like start of page instead > of page end, because for ARM push operation, the stack pointer is encreased > before storing data. > - patch 10/11, delete the previous un-implemented cpu_suspend function for ls1 > platform, because there is default blank functions for all those are not > implemented in specific platform. > > > v2 changes: > - re-organize psci_cpu_on_common, this code should be called by each > platform's > psci_cpu_on, should not be a function calling each psci_cpu_on, all related > functions are updated due to this change > - update some registers usage, e.g. if r10 is used without push/pop, u-boot > cannot launch rt-kernel > - update some comments to be clearer, re-organize all patches for easier > review > - add patch to check already_on or on_pending for LS102XA > > This patch set contains two parts: > ARMv7 PSCI common framework: fix some issues and add v1.0 support > NXP (was Freescale) LS102XA: codes enhancement and add v1.0 implementation > And this patch set was initially created by Dongsheng Wang. > > Hongbo Zhang (8): > ARMv7: PSCI: add PSCI v1.0 functions skeleton > ARMv7: PSCI: factor out reusable psci_cpu_on_common > ARMv7: PSCI: update the place of saving target PC > ARMv7: PSCI: add codes to save context ID for CPU_ON > ARMv7: PSCI: ls102xa: check target CPU ID before further operations > ARMv7: PSCI: ls102xa: check ALREADY_ON or ON_PENDING for CPU_ON > ARMv7: PSCI: ls102xa: add more PSCI v1.0 functions implemention > ARMv7: PSCI: ls102xa: move secure text section into OCRAM > > arch/arm/cpu/armv7/ls102xa/psci.S | 169 > +++++++++++++++++++++++++++-- > arch/arm/cpu/armv7/mx7/psci.S | 5 +- > arch/arm/cpu/armv7/nonsec_virt.S | 7 ++ > arch/arm/cpu/armv7/psci.S | 99 ++++++++++++++++- > arch/arm/cpu/armv7/sunxi/psci_sun6i.S | 5 +- > arch/arm/cpu/armv7/sunxi/psci_sun7i.S | 5 +- > arch/arm/cpu/armv7/virt-dt.c | 10 +- > arch/arm/include/asm/arch-ls102xa/config.h | 3 +- > arch/arm/include/asm/psci.h | 31 ++++++ > arch/arm/mach-tegra/psci.S | 5 +- > board/freescale/ls1021aqds/Makefile | 1 + > board/freescale/ls1021aqds/psci.S | 36 ++++++ > board/freescale/ls1021atwr/Makefile | 1 + > board/freescale/ls1021atwr/psci.S | 28 +++++ > include/configs/ls1021aqds.h | 3 + > include/configs/ls1021atwr.h | 3 + > 16 files changed, 383 insertions(+), 28 deletions(-) > create mode 100644 board/freescale/ls1021aqds/psci.S > create mode 100644 board/freescale/ls1021atwr/psci.S > > -- > 2.1.4 > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
