From: Mohamed Mediouni <mohamed.mediouni@caramail.com>
To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Stan Skowronek <stan@corellium.com>
Subject: [PATCH 0/3] Preparations for Linux on Apple Silicon
Date: Wed, 20 Jan 2021 12:36:42 +0100 [thread overview]
Message-ID: <70D1FB71-240D-4FC4-81BC-0954062A4D11@caramail.com> (raw)
This patch series contains the changes to common Linux
kernel code that are required to boot Linux on Apple Silicon
Mac computers.
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.
Mohamed Mediouni (1):
arm64: mm: use nGnRnE instead of nGnRE on Apple processors
Stan Skowronek (2):
arm64/kernel: FIQ support
arm64: kernel: Add a WFI hook.
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/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 ++++++++++
11 files changed, 140 insertions(+), 19 deletions(-)
--
2.29.2
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