summaryrefslogtreecommitdiff
path: root/arch/arm/include/asm/psci.h
Commit message (Collapse)AuthorAgeLines
* ARMv8: Add basic PSCI frameworkmacro.wave.z@gmail.com2016-12-15-0/+15
| | | | | | | | | | This patch introduces a generic ARMv8 PSCI framework, with all functions returning a dummy ARM_PSCI_RET_NI (Not Implemented), then it is up to each platform to implement their own functions based on this framework. Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: York Sun <york.sun@nxp.com>
* armv7: psci: make v7_flush_dcache_all public for all psci codeHongbo Zhang2016-09-14-0/+2
| | | | | | | | | | | The v7_flush_dcache_all function will be called by ls102xa platform system suspend, it is necessary to make it a public call instead of a local one, but changing the LENTRY to ENTRY isn't enough, because there is another one using the same name, so this one gets a psci_ prefix. Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: York Sun <york.sun@nxp.com>
* arm/PSCI: Fixed the backward compatiblity issueHou Zhiqiang2016-08-02-0/+3
| | | | | | | | | | | | Appended the compatible strings of old version PSCI to the latest version supported. And there are some psci functions' property must be added to DT only for psci version 0.1, including cpu_on, cpu_off, cpu_suspend, migrate. Note, ARMv8 Secure Firmware Framework doesn't support PSCI ver 0.1. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
* ARMv7: PSCI: ls102xa: check target CPU ID before further operationsHongbo Zhang2016-07-26-0/+5
| | | | | | | | | The input parameter CPU ID needs to be validated before furher oprations such as CPU_ON, this patch introduces the function to do this. Signed-off-by: Wang Dongsheng <dongsheng.wang@nxp.com> Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
* ARMv7: PSCI: add PSCI v1.0 functions skeletonHongbo Zhang2016-07-26-0/+16
| | | | | | | | | | | | This patch adds all the PSCI v1.0 functions in to the common framework, with all the functions returning "not implemented" by default, as a common framework all the dummy functions are added here, it is up to every platform developer to decide which version of PSCI and which functions to implement. Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com> Signed-off-by: Wang Dongsheng <dongsheng.wang@nxp.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: York Sun <york.sun@nxp.com>
* Merge git://git.denx.de/u-boot-fsl-qoriqTom Rini2016-07-19-0/+1
|\ | | | | | | | | | | | | | | Signed-off-by: Tom Rini <trini@konsulko.com> Conflicts: arch/arm/cpu/armv8/Makefile arch/arm/lib/bootm-fdt.c
| * ARMv8/PSCI: Fixup the device tree for PSCIHou Zhiqiang2016-07-19-0/+1
| | | | | | | | | | | | | | | | Set the enable-method in the cpu node to PSCI, and create device node for PSCI, when PSCI was enabled. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
* | ARM: PSCI: Make psci_get_cpu_stack_top local to armv7/psci.SChen-Yu Tsai2016-07-15-1/+0
| | | | | | | | | | | | | | | | | | | | | | Now that we have a secure data section for storing variables, there should be no need for platform code to get the stack address. Make psci_get_cpu_stack_top a local function, as it should only be used in armv7/psci.S and only by psci_stack_setup. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* | ARM: PSCI: Add helper functions to access per-CPU target PC storageChen-Yu Tsai2016-07-15-0/+4
| | | | | | | | | | | | | | | | Now that we have a data section, add helper functions to save and fetch per-CPU target PC. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* | ARM: Add an empty secure stack sectionChen-Yu Tsai2016-07-15-0/+4
|/ | | | | | | | | | | | | | | | | | | | | | | | Until now we've been using memory beyond psci_text_end as stack space for the secure monitor or PSCI implementation, even if space was not allocated for it. This was partially fixed in ("ARM: allocate extra space for PSCI stack in secure section during link phase"). However, calculating stack space from psci_text_end in one place, while allocating the space in another is error prone. This patch adds a separate empty secure stack section, with space for CONFIG_ARMV7_PSCI_NR_CPUS stacks, each 1 KB. There's also __secure_stack_start and __secure_stack_end symbols. The linker script handles calculating the correct VMAs for the stack section. For platforms that relocate/copy the secure monitor before using it, the space is not allocated in the executable, saving space. For platforms that do not define CONFIG_ARMV7_PSCI_NR_CPUS, a whole page of stack space for 4 CPUs is allocated, matching the previous behavior. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* ARM: PSCI: export common PSCI function declarations for C codeChen-Yu Tsai2016-06-20-0/+7
| | | | | | | | | | | Some common PSCI functions are written in assembly, but it should be possible to use them from C code. Add function declarations for C code to consume. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* arm: implement generic PSCI reset call for armv8Beniamino Galvani2016-05-27-1/+16
| | | | | | | | | Add a psci_system_reset() which calls the SYSTEM_RESET function of PSCI 0.2 and can be used by boards that support it to implement reset_cpu(). Signed-off-by: Beniamino Galvani <b.galvani@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* ARM: Add board-specific initialization hook for PSCIJan Kiszka2015-05-13-0/+1
| | | | | | | | Tegra boards will have to initialize power management for the PSCI support this way. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
* ARM: PSCI: Rework the DT handler slightlyTom Rini2015-03-09-0/+4
| | | | | | | | | | | | | | | | | | | | | | The way the PSCI DT update happens currently means we pull in <asm/armv7.h> everywhere, including on ARMv8 and that in turn brings in <asm/io.h> for some non-PSCI related things that header needs to deal with. To fix this, we rework the hook slightly. A good portion of arch/arm/cpu/armv7/virt-dt.c is common looking and I hope that when PSCI is needed on ARMv8 we can re-use this by and large. So rename the current hook to psci_update_dt(), move the prototype to <asm/psci.h> and add an #ifdef that will make re-use later easier. Reported-by: York Sun <yorksun@freescale.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: York Sun <yorksun@freescale.com> Cc: Ian Campbell <ijc@hellion.org.uk> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Albert ARIBAUD <albert.u.boot@aribaud.net> Signed-off-by: Tom Rini <trini@konsulko.com> Acked-by: York Sun <yorksun@freescale.com>
* ARM: HYP/non-sec: add generic ARMv7 PSCI codeMarc Zyngier2014-07-28-0/+35
Implement core support for PSCI. As this is generic code, it doesn't implement anything really useful (all the functions are returning Not Implemented). Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>