From: Hongbo Zhang hongbo.zhang@nxp.com
v6 changes: - Remove the patch of fixing psci stack and patch of fixing saving target PC since Chen-Yu Tsai's patches resovle them in other way and already got merged - Temporarily remove patch of checking ON_PENDING and ALREADY_ON for reasons: it is better the hardware has bits to show the states, there may be compete conditions for pure software implementation, and if this is well designed in future, codes can be placed in the psci-common.c file, currently this patch series only covers necesary psci 1.0 and some implementation on ls1021. - Update codes according to Chen-Yu Tsai's review comments.
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. - 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 (4): ARMv7: PSCI: add PSCI v1.0 functions skeleton ARMv7: PSCI: ls102xa: check target CPU ID before further operations 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 | 138 ++++++++++++++++++++++++++++- arch/arm/cpu/armv7/psci.S | 78 ++++++++++++++++ arch/arm/cpu/armv7/virt-dt.c | 10 ++- arch/arm/include/asm/arch-ls102xa/config.h | 3 +- arch/arm/include/asm/psci.h | 21 +++++ board/freescale/ls1021aqds/Makefile | 1 + board/freescale/ls1021aqds/psci.S | 33 +++++++ board/freescale/ls1021atwr/Makefile | 1 + board/freescale/ls1021atwr/psci.S | 25 ++++++ include/configs/ls1021aqds.h | 5 ++ include/configs/ls1021atwr.h | 3 + 11 files changed, 313 insertions(+), 5 deletions(-) create mode 100644 board/freescale/ls1021aqds/psci.S create mode 100644 board/freescale/ls1021atwr/psci.S