From: Mohamed Mediouni <mohamed.mediouni@caramail.com> To: linux-arm-kernel@lists.infradead.org Cc: Mark Rutland <mark.rutland@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, Hector Martin <marcan@marcan.st>, linux-kernel@vger.kernel.org, Marc Zyngier <maz@kernel.org>, Mohamed Mediouni <mohamed.mediouni@caramail.com>, Will Deacon <will@kernel.org> Subject: [RFC PATCH 0/7] Linux on Apple Silicon Date: Wed, 20 Jan 2021 14:27:10 +0100 Message-ID: <20210120132717.395873-1-mohamed.mediouni@caramail.com> (raw) This patch series contains the changes for a minimal Linux on Apple Silicon boot, including SMP. (sorry for the resubmission, I didn't attach the drivers to the ones beforehand, and didn't submit it properly) The changes: - Support for FIQ interrupts in-kernel This is required for the timer and IPIs on Apple SoCs. - WFI hook Apple processors do not keep register state across WFI. As such, put a mechanism in cpu_ops to put a custom sleep function instead. - use nGnRnE instead of nGnRE on Apple processors Device-nGnRE writes go to nowhere on Apple processors, as such use MAIR to change those to Device-nGnRE writes. - Apple AIC driver Driver for the Apple AIC interrupt controller. - Apple CPU start driver On Apple Macs, RVBAR is locked by the bootloader. And the hardware doesn't have EL3 to provide PSCI as an option either. This also implements the workaround for WFI on the hardware. What is not present: - Device tree, will be present in a future version of this patchset - More devices. Thank you, Mohamed Mediouni (1): arm64: mm: use nGnRnE instead of nGnRE on Apple processors Stan Skowronek (6): arm64: kernel: FIQ support arm64: kernel: Add a WFI hook. irqchip/apple-aic: Add support for Apple AIC arm64/Kconfig: Add Apple Silicon SoC platform arm64: kernel: Apple CPU start driver irqchip/apple-aic: add SMP support to the Apple AIC driver. .../devicetree/bindings/arm/cpus.yaml | 1 + .../interrupt-controller/apple,aic.yaml | 49 +++ MAINTAINERS | 6 + arch/arm64/Kconfig.platforms | 7 + arch/arm64/include/asm/arch_gicv3.h | 2 +- arch/arm64/include/asm/assembler.h | 8 +- arch/arm64/include/asm/cpu_ops.h | 2 + arch/arm64/include/asm/daifflags.h | 4 +- arch/arm64/include/asm/irq.h | 4 + arch/arm64/include/asm/irqflags.h | 6 +- arch/arm64/kernel/Makefile | 1 + arch/arm64/kernel/apple_cpustart.c | 153 ++++++++ arch/arm64/kernel/cpu_ops.c | 6 + arch/arm64/kernel/entry.S | 74 +++- arch/arm64/kernel/irq.c | 14 + arch/arm64/kernel/process.c | 13 +- arch/arm64/mm/proc.S | 26 ++ drivers/irqchip/Kconfig | 6 + drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-apple-aic.c | 364 ++++++++++++++++++ 20 files changed, 728 insertions(+), 19 deletions(-) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml create mode 100644 arch/arm64/kernel/apple_cpustart.c create mode 100644 drivers/irqchip/irq-apple-aic.c -- 2.29.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply index Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-20 13:27 Mohamed Mediouni [this message] 2021-01-20 13:27 ` [RFC PATCH 1/7] arm64: kernel: FIQ support Mohamed Mediouni 2021-01-20 13:27 ` [RFC PATCH 2/7] arm64: kernel: Add a WFI hook Mohamed Mediouni 2021-01-20 16:46 ` Alexander Graf [not found] ` <94C20F55-D3B8-4349-B26F-9EA8AAEBF639@caramail.com> 2021-01-21 12:33 ` Hector Martin 'marcan' 2021-01-21 10:52 ` Arnd Bergmann 2021-01-21 11:01 ` Mohamed Mediouni 2021-01-21 11:36 ` Arnd Bergmann 2021-01-20 13:27 ` [RFC PATCH 3/7] arm64: mm: use nGnRnE instead of nGnRE on Apple processors Mohamed Mediouni 2021-01-20 16:47 ` Alexander Graf 2021-01-20 18:06 ` Mohamed Mediouni 2021-01-20 18:10 ` Alexander Graf 2021-01-21 11:27 ` Will Deacon 2021-01-21 11:38 ` Arnd Bergmann 2021-01-21 11:44 ` Marc Zyngier 2021-01-21 12:47 ` Will Deacon 2021-01-21 15:12 ` Mohamed Mediouni 2021-01-21 16:25 ` Marc Zyngier 2021-01-21 17:55 ` Will Deacon 2021-01-21 18:15 ` Marc Zyngier 2021-01-21 18:22 ` Mohamed Mediouni 2021-01-21 18:22 ` Will Deacon 2021-01-20 13:27 ` [RFC PATCH 4/7] irqchip/apple-aic: Add support for Apple AIC Mohamed Mediouni 2021-01-20 17:11 ` Alexander Graf 2021-01-20 18:04 ` Mohamed Mediouni 2021-01-20 20:16 ` Andrew Lunn 2021-01-20 21:18 ` Stan Skowronek 2021-01-21 9:48 ` Linus Walleij 2021-01-21 10:37 ` Arnd Bergmann 2021-01-21 15:29 ` Hector Martin 'marcan' 2021-01-21 17:09 ` Rob Herring 2021-01-21 17:45 ` Rob Herring 2021-01-21 16:44 ` Rob Herring 2021-01-21 16:53 ` Hector Martin 'marcan' 2021-01-20 13:27 ` [RFC PATCH 5/7] arm64/Kconfig: Add Apple Silicon SoC platform Mohamed Mediouni 2021-01-20 13:27 ` [RFC PATCH 6/7] arm64: kernel: Apple CPU start driver Mohamed Mediouni 2021-01-21 11:14 ` Arnd Bergmann 2021-01-20 13:27 ` [RFC PATCH 7/7] irqchip/apple-aic: add SMP support to the Apple AIC driver Mohamed Mediouni 2021-01-21 12:44 ` Arnd Bergmann 2021-01-21 12:50 ` Mohamed Mediouni 2021-01-21 13:00 ` Arnd Bergmann 2021-01-21 13:01 ` Hector Martin 'marcan' 2021-01-21 13:22 ` Marc Zyngier 2021-01-21 13:32 ` Mark Rutland 2021-01-21 14:05 ` Marc Zyngier 2021-01-21 13:34 ` Mohamed Mediouni 2021-01-21 14:10 ` Marc Zyngier 2021-01-21 15:09 ` Arnd Bergmann 2021-01-21 15:18 ` Mohamed Mediouni 2021-01-21 16:40 ` Rob Herring 2021-01-21 16:43 ` Mohamed Mediouni 2021-01-21 17:37 ` Rob Herring 2021-01-21 18:08 ` Mohamed Mediouni 2021-01-21 18:57 ` Rob Herring 2021-02-02 19:15 ` Linus Walleij
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