[PATCH 0/3] Preparations for Linux on Apple Silicon

[PATCH 0/3] Preparations for Linux on Apple Silicon

[Mohamed Mediouni]

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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