[v7,0/8] device tree mapping

Message

Oleksii Kurochko Sept. 13, 2024, 3:57 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

---
Changes in v7:
 - Drop the patch "xen/riscv: prevent recursion when ASSERT(), BUG*(), or panic() are called"
 - All other changes are patch specific so please look at the patch.
---
Changes in v6:
 - Add patch to fix recursion when ASSERT(), BUG*(), panic() are called.
 - Add patch to allow write_atomic() to work with  non-scalar types for consistence
   with read_atomic().
 - All other changes are patch specific so please look at the patch. 
---
Changes in v5:
 - The following patch was merged to staging:
     [PATCH v3 3/9] xen/riscv: enable CONFIG_HAS_DEVICE_TREE
 - Drop depedency from "RISCV basic exception handling implementation" as
   it was meged to staging branch.
 - All other changes are patch specific so please look at the patch.
---
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 (8):
  xen/riscv: use {read,write}{b,w,l,q}_cpu() to define
    {read,write}_atomic()
  xen/riscv: allow write_atomic() to work with non-scalar types
  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                      |   1 +
 xen/arch/riscv/Makefile                     |   2 +
 xen/arch/riscv/include/asm/atomic.h         |  32 +-
 xen/arch/riscv/include/asm/config.h         |  16 +-
 xen/arch/riscv/include/asm/current.h        |  27 +-
 xen/arch/riscv/include/asm/fixmap.h         |  46 +++
 xen/arch/riscv/include/asm/flushtlb.h       |  15 +
 xen/arch/riscv/include/asm/mm.h             |   6 +
 xen/arch/riscv/include/asm/page.h           | 105 +++++
 xen/arch/riscv/include/asm/pmap.h           |  36 ++
 xen/arch/riscv/include/asm/processor.h      |   3 -
 xen/arch/riscv/include/asm/riscv_encoding.h |   2 +
 xen/arch/riscv/include/asm/sbi.h            |  62 +++
 xen/arch/riscv/include/asm/smp.h            |  18 +
 xen/arch/riscv/mm.c                         | 101 ++++-
 xen/arch/riscv/pt.c                         | 427 ++++++++++++++++++++
 xen/arch/riscv/riscv64/asm-offsets.c        |   3 +
 xen/arch/riscv/riscv64/head.S               |  14 +
 xen/arch/riscv/sbi.c                        | 273 ++++++++++++-
 xen/arch/riscv/setup.c                      |  17 +
 xen/arch/riscv/smp.c                        |  15 +
 xen/arch/riscv/xen.lds.S                    |   2 +-
 22 files changed, 1192 insertions(+), 31 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