[v4,0/7] RISCV device tree mapping

Message

Oleksii Kurochko Aug. 9, 2024, 4:19 p.m. UTC

Current patch series introduces device tree mapping for RISC-V
and necessary things for that such as:
- Fixmap mapping
- pmap
- Xen page table processing

Also there is another one depenency:
RISCV basic exception handling implementation [2]

[2] https://lore.kernel.org/xen-devel/[e-mail]/T/#t

---
Changes in v4:
 - Drop depedency from common devicre tree patch series as it was merged to
   staging.
 - Update the cover letter message.
 - All other changes are patch specific so please look at the patch.
---
Changes in v3:
 - Introduce SBI RFENCE extension support.
 - Introduce and initialize pcpu_info[] and __cpuid_to_hartid_map[] and functionality
   to work with this arrays.
 - Make page table handling arch specific instead of trying to make it generic.
 - All other changes are patch specific so please look at the patch.
---
Changes in v2:
 - Update the cover letter message
 - introduce fixmap mapping
 - introduce pmap
 - introduce CONFIG_GENREIC_PT
 - update use early_fdt_map() after MMU is enabled.
---

Oleksii Kurochko (7):
  xen/riscv: enable CONFIG_HAS_DEVICE_TREE
  xen/riscv: set up fixmap mappings
  xen/riscv: introduce asm/pmap.h header
  xen/riscv: introduce functionality to work with CPU info
  xen/riscv: introduce and initialize SBI RFENCE extension
  xen/riscv: page table handling
  xen/riscv: introduce early_fdt_map()

 xen/arch/riscv/Kconfig                      |   2 +
 xen/arch/riscv/Makefile                     |   3 +
 xen/arch/riscv/include/asm/config.h         |   8 +
 xen/arch/riscv/include/asm/fixmap.h         |  44 +++
 xen/arch/riscv/include/asm/flushtlb.h       |  19 +
 xen/arch/riscv/include/asm/mm.h             |   6 +
 xen/arch/riscv/include/asm/page.h           |  88 +++++
 xen/arch/riscv/include/asm/pmap.h           |  36 ++
 xen/arch/riscv/include/asm/processor.h      |  28 +-
 xen/arch/riscv/include/asm/riscv_encoding.h |   1 +
 xen/arch/riscv/include/asm/sbi.h            |  64 +++
 xen/arch/riscv/include/asm/smp.h            |  10 +
 xen/arch/riscv/mm.c                         | 101 ++++-
 xen/arch/riscv/pt.c                         | 408 ++++++++++++++++++++
 xen/arch/riscv/sbi.c                        | 252 +++++++++++-
 xen/arch/riscv/setup.c                      |  26 ++
 xen/arch/riscv/smp.c                        |   4 +
 xen/arch/riscv/smpboot.c                    |  12 +
 xen/arch/riscv/xen.lds.S                    |   2 +-
 19 files changed, 1104 insertions(+), 10 deletions(-)
 create mode 100644 xen/arch/riscv/include/asm/fixmap.h
 create mode 100644 xen/arch/riscv/include/asm/pmap.h
 create mode 100644 xen/arch/riscv/pt.c
 create mode 100644 xen/arch/riscv/smp.c
 create mode 100644 xen/arch/riscv/smpboot.c