From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thierry Reding Date: Fri, 10 Apr 2015 08:59:18 +0200 Subject: [U-Boot] [PATCH v5 00/14] Add PSCI support for Jetson TK1/Tegra124 + CNTFRQ fix In-Reply-To: <5524E8D4.5070904@siemens.com> References: <20150319150254.GE16986@ulmo.nvidia.com> <5524E8D4.5070904@siemens.com> Message-ID: <20150410065916.GA22156@ulmo.nvidia.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Wed, Apr 08, 2015 at 10:37:40AM +0200, Jan Kiszka wrote: > On 2015-03-19 16:02, Thierry Reding wrote: > > On Mon, Mar 09, 2015 at 08:00:10AM +0100, Jan Kiszka wrote: > >> Changes in v4: > >> - rebased over master > >> - implemented psci_get_cpu_id as weak function > >> - implemented psci_disable/enable_smp as weak functions > >> - adjusted register interface of psci_get_cpu_stack_top > >> > >> This version (+ the non-cached memory init fix) can also be found at > >> https://github.com/siemens/u-boot/tree/jetson-tk1-v5. > >> > >> Jan > >> > >> CC: Ian Campbell > >> CC: Marc Zyngier > >> > >> Ian Campbell (3): > >> tegra124: Add more registers to struct mc_ctlr > >> jetson-tk1: Add PSCI configuration options and reserve secure code > >> tegra124: Reserve secure RAM using MC_SECURITY_CFG{0, 1}_0 > >> > >> Jan Kiszka (11): > >> sun7i: Remove duplicate call to psci_arch_init > >> ARM: Factor out common psci_get_cpu_id > >> ARM: Factor out reusable psci_cpu_off_common > >> ARM: Factor out reusable psci_cpu_entry > >> ARM: Factor out reusable psci_get_cpu_stack_top > >> ARM: Put target PC for PSCI CPU_ON on per-CPU stack > >> virt-dt: Allow reservation of secure region when in a RAM carveout > >> tegra: Make tegra_powergate_power_on public > >> tegra: Add ap_pm_init hook > >> tegra124: Add PSCI support for Tegra124 > >> tegra: Set CNTFRQ for secondary CPUs > >> > >> arch/arm/cpu/armv7/psci.S | 121 ++++++++++++++++++++++++++++ > >> arch/arm/cpu/armv7/sunxi/psci.S | 112 ++++--------------------- > >> arch/arm/cpu/armv7/virt-dt.c | 29 +++++++ > >> arch/arm/cpu/armv7/virt-v7.c | 5 ++ > >> arch/arm/include/asm/arch-tegra/ap.h | 5 ++ > >> arch/arm/include/asm/arch-tegra/powergate.h | 1 + > >> arch/arm/include/asm/arch-tegra124/flow.h | 6 ++ > >> arch/arm/include/asm/arch-tegra124/mc.h | 35 +++++++- > >> arch/arm/include/asm/armv7.h | 1 + > >> arch/arm/include/asm/system.h | 1 + > >> arch/arm/lib/bootm-fdt.c | 5 ++ > >> arch/arm/mach-tegra/Makefile | 4 + > >> arch/arm/mach-tegra/ap.c | 15 ++++ > >> arch/arm/mach-tegra/powergate.c | 2 +- > >> arch/arm/mach-tegra/psci.S | 114 ++++++++++++++++++++++++++ > >> arch/arm/mach-tegra/tegra124/Kconfig | 2 + > >> arch/arm/mach-tegra/tegra124/Makefile | 4 + > >> arch/arm/mach-tegra/tegra124/ap.c | 55 +++++++++++++ > >> board/nvidia/common/board.c | 4 + > >> include/configs/jetson-tk1.h | 5 ++ > >> 20 files changed, 428 insertions(+), 98 deletions(-) > >> create mode 100644 arch/arm/mach-tegra/psci.S > >> create mode 100644 arch/arm/mach-tegra/tegra124/ap.c > > > > For the series: > > > > Reviewed-by: Thierry Reding > > Tested-by: Thierry Reding > > Thanks for all feedback - what's next? Anything missing? Should I rebase > (didn't check yet if that is necessary) and resend? One of the things that I'm unsure about is that we need a couple of patches in the kernel to keep systems working with these U-Boot patches applied. The cpuidle driver needs to be disabled if PSCI is enabled (I have a patch to do that). And there are a couple of other things that U-Boot needs to do before switching to non-secure mode (enabling the SMMU because that can't be done in non-secure mode). So unconditionally enabling this is going to cause breakage in current kernels. Perhaps a solution would be to get all the code in place but not update the configuration just yet. Thierry -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 819 bytes Desc: not available URL: