[PATCH v2 0/6] Armv8r64 + BASER_FVP board support

[Peter Hoyes]

From: Peter Hoyes <Peter.Hoyes at arm.com>

Add support for the Armv8r64 architecture and the BASER_FVP, which uses
the Armv8r64 architecture.

The Armv8r64 architecture has the following features:
 * No non-secure exception levels
 * Highest exception level is always S-EL2
 * There is only a PMSA at S-EL2, which requires new MPU initialization
   logic
 * The VMSA at S-EL1 may not be enabled by default
 * We boot Linux at S-EL1, so a mechanism is required to boot other
   systems (e.g. Xen) at S-EL2

The BASER_FVP board config is implemented on top of the BASE_FVP and
Juno "VExpress" board configs.

The Armv8-R64 architecture reference manual supplement can be found at
https://developer.arm.com/documentation/ddi0600/latest/

Peter Hoyes (6):
  armv8: Disable pointer authentication traps for EL1
  armv8: Ensure EL1&0 VMSA is enabled
  armv8: Add ARMv8 MPU configuration logic
  vexpress64: Add BASER_FVP vexpress board variant
  arm: Use armv8_switch_to_el1 env to switch to EL1
  doc: Add documentation for the Arm vexpress board configs

 arch/arm/Kconfig                              |  7 ++
 arch/arm/cpu/armv8/cache_v8.c                 | 96 ++++++++++++++++++-
 arch/arm/cpu/armv8/fsl-layerscape/spintable.S |  2 +-
 arch/arm/cpu/armv8/transition.S               |  2 +-
 arch/arm/include/asm/armv8/mpu.h              | 61 ++++++++++++
 arch/arm/include/asm/macro.h                  | 28 +++++-
 arch/arm/include/asm/system.h                 | 39 ++++++++
 arch/arm/lib/bootm.c                          | 40 +++++---
 board/armltd/vexpress64/Kconfig               |  5 +-
 board/armltd/vexpress64/vexpress64.c          | 22 +++++
 configs/vexpress_aemv8r_defconfig             | 18 ++++
 doc/README.semihosting                        |  2 +-
 doc/arch/arm64.rst                            |  3 +-
 doc/board/armltd/index.rst                    |  9 ++
 doc/board/armltd/vexpress64.rst               | 57 +++++++++++
 doc/board/index.rst                           |  1 +
 .../{vexpress_aemv8a.h => vexpress_aemv8.h}   | 63 ++++++++----
 17 files changed, 408 insertions(+), 47 deletions(-)
 create mode 100644 arch/arm/include/asm/armv8/mpu.h
 create mode 100644 configs/vexpress_aemv8r_defconfig
 create mode 100644 doc/board/armltd/index.rst
 create mode 100644 doc/board/armltd/vexpress64.rst
 rename include/configs/{vexpress_aemv8a.h => vexpress_aemv8.h} (83%)

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