[0/9] First chunk for Arm R82 and MPU support

Message

Luca Fancellu Feb. 28, 2025, 4:18 p.m. UTC

Hi all,

This is the first chunk of work to support MPU and R82 on Xen, this serie
reaches the early boot stages until setup_pagetables() which will be renamed
in one of the commit on the serie to have a more generic name between MPU and
MMU memory management subsystem.

Luca Fancellu (7):
  arm/mpu: Add HYPERVISOR_VIRT_START and avoid a check in xen.lds.S
  arm/mpu: Provide access to the MPU region from the C code
  arm/mpu: Introduce utility functions for the pr_t type
  arm/mpu: Provide a constructor for pr_t type
  arm/mpu: Introduce MPU memory mapping flags
  arm/mpu: Implement early_fdt_map support in MPU systems
  arm/mpu: Implement setup_mappings for MPU system

Penny Zheng (2):
  arm/mpu: Implement virt/maddr conversion in MPU system
  arm/mpu: Introduce MPU memory region map structure

 xen/arch/arm/Makefile                 |   1 +
 xen/arch/arm/include/asm/arm64/mpu.h  |  92 ++++++++++
 xen/arch/arm/include/asm/mm.h         |  15 +-
 xen/arch/arm/include/asm/mmu/mm.h     |   7 +
 xen/arch/arm/include/asm/mpu/layout.h |   2 +
 xen/arch/arm/include/asm/mpu/mm.h     |  59 +++++++
 xen/arch/arm/include/asm/page.h       |  25 +++
 xen/arch/arm/mmu/setup.c              |   2 +-
 xen/arch/arm/mpu/Makefile             |   2 +
 xen/arch/arm/mpu/mm.c                 | 236 ++++++++++++++++++++++++++
 xen/arch/arm/mpu/setup.c              | 112 ++++++++++++
 xen/arch/arm/setup.c                  |   2 +-
 xen/arch/arm/xen.lds.S                |   2 +
 13 files changed, 548 insertions(+), 9 deletions(-)
 create mode 100644 xen/arch/arm/include/asm/mpu/mm.h
 create mode 100644 xen/arch/arm/mpu/Makefile
 create mode 100644 xen/arch/arm/mpu/mm.c
 create mode 100644 xen/arch/arm/mpu/setup.c