[PATCH 0/2] riscv: Add Beijing LeapRise Technology vendor ID and vendor extension framework

[lv.yating at zte.com.cn]

From: Lv Yating <lv.yating at zte.com.cn>

Hi,

Beijing LeapRise Technology has been assigned a JEDEC manufacturer
identity, encoded as 0x966 in the mvendorid CSR per the JEP106
scheme (bank 0x12, final byte 0x66).

This series lays the kernel groundwork for LeapRise RISC-V cores:

Patch 1 adds the vendor ID constant (LEAPRISE_VENDOR_ID) to the
RISC-V vendor list.

Patch 2 adds the vendor extension framework support: hwprobe key
recognition (RISCV_HWPROBE_KEY_VENDOR_EXT_LEAPRISE_0) and an empty
extension probe list hooked into the common probing path. The key
reports an empty bitmask for now, allowing userspace to distinguish
it from unknown keys (reported as -1), so LeapRise userspace
libraries can be prepared ahead of the first hardware shipping
vendor extensions. The key is documented in
Documentation/arch/riscv/hwprobe.rst.

Follow-up patches will register extensions as their specifications
are finalized.

best regards,
Lv Yating

Lv Yating (2):
  riscv: Add LeapRise Technology to the vendor list
  riscv: hwprobe: Add LeapRise vendor extension framework support

 Documentation/arch/riscv/hwprobe.rst          |  4 ++++
 arch/riscv/Kconfig.vendor                     | 14 +++++++++++++
 arch/riscv/include/asm/hwprobe.h              |  1 +
 .../include/asm/vendor_extensions/leaprise.h  | 11 ++++++++++
 .../asm/vendor_extensions/leaprise_hwprobe.h  | 20 +++++++++++++++++++
 arch/riscv/include/asm/vendorid_list.h        |  1 +
 arch/riscv/include/uapi/asm/hwprobe.h         |  1 +
 arch/riscv/include/uapi/asm/vendor/leaprise.h |  3 +++
 arch/riscv/kernel/sys_hwprobe.c               |  4 ++++
 arch/riscv/kernel/vendor_extensions/Makefile  |  2 ++
 .../riscv/kernel/vendor_extensions/leaprise.c |  7 +++++++
 .../vendor_extensions/leaprise_hwprobe.c      | 18 +++++++++++++++++
 12 files changed, 86 insertions(+)
 create mode 100644 arch/riscv/include/asm/vendor_extensions/leaprise.h
 create mode 100644 arch/riscv/include/asm/vendor_extensions/leaprise_hwprobe.h
 create mode 100644 arch/riscv/include/uapi/asm/vendor/leaprise.h
 create mode 100644 arch/riscv/kernel/vendor_extensions/leaprise.c
 create mode 100644 arch/riscv/kernel/vendor_extensions/leaprise_hwprobe.c

-- 
2.27.0