Add a SysBus model for the 64 K230 Function IO configuration registers documented by the K230 Technical Reference Manual. The model retains the writable configuration fields needed by the SDK U-Boot and Linux read-modify-write paths.
The series adds the device model, wires it into the K230 SoC at 0x91105000, and adds qtest coverage. Changes in v2: - Split the device model, SoC wiring, and qtest coverage into separate patches. - Removed redundant MMIO bounds, access-size, and alignment checks. - Limited register storage to the 64 documented Function IO registers. - Applied the documented 0x00003fff writable mask. - Treated offsets 0x100 through 0x7ff as reserved. - Added tests for write masking, read-modify-write accesses, IO63, reserved offsets, and system reset. Tested with: - qtest-riscv64/k230-iomux-test - qtest-riscv64/k230-wdt-test - SDK U-Boot smoke test, reaching the K230 prompt v1: https://lore.kernel.org/qemu-devel/[email protected]/ Kangjie Huang (3): hw/misc/k230_iomux: add Kendryte K230 IOMUX model hw/riscv/k230: wire up the IOMUX device tests/qtest: add test for K230 IOMUX docs/system/riscv/k230.rst | 1 + hw/misc/Kconfig | 3 + hw/misc/k230_iomux.c | 124 +++++++++++++++++++++++++++ hw/misc/meson.build | 2 + hw/misc/trace-events | 4 + hw/riscv/Kconfig | 1 + hw/riscv/k230.c | 11 ++- include/hw/misc/k230_iomux.h | 34 ++++++++ include/hw/riscv/k230.h | 2 + tests/qtest/k230-iomux-test.c | 155 ++++++++++++++++++++++++++++++++++ tests/qtest/meson.build | 5 +- 11 files changed, 338 insertions(+), 4 deletions(-) create mode 100644 hw/misc/k230_iomux.c create mode 100644 include/hw/misc/k230_iomux.h create mode 100644 tests/qtest/k230-iomux-test.c -- 2.43.0
