From 0beed2cc22b20093b5ee0fdab343c525503b8a16 Mon Sep 17 00:00:00 2001 From: Jerry Zhao Date: Mon, 5 Jun 2023 10:28:20 -0700 Subject: device_t: Add device_factory_t This class should implement conditional fdt-based device instantiation, as well as adding device nodes to the dts --- riscv/abstract_device.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/riscv/abstract_device.h b/riscv/abstract_device.h index f4ccebe..7239b66 100644 --- a/riscv/abstract_device.h +++ b/riscv/abstract_device.h @@ -5,6 +5,9 @@ #include "common.h" #include #include +#include + +class sim_t; class abstract_device_t { public: @@ -14,4 +17,20 @@ class abstract_device_t { virtual void tick(reg_t UNUSED rtc_ticks) {} }; +// factory for devices which should show up in the DTS, and can be +// parameterized by parsing the DTS +class device_factory_t { +public: + virtual abstract_device_t* parse_from_fdt(const void* fdt, const sim_t* sim, reg_t* base) = 0; + virtual std::string generate_dts(const sim_t* sim) = 0; + virtual ~device_factory_t() {} +}; + +#define REGISTER_DEVICE(name, parse, generate) \ + class name##_factory_t : public device_factory_t { \ + public: \ + name##_t* parse_from_fdt(const void* fdt, const sim_t* sim, reg_t* base) override { return parse(fdt, sim, base); } \ + std::string generate_dts(const sim_t* sim) override { return generate(sim); } \ + }; device_factory_t *name##_factory = new name##_factory_t(); + #endif -- cgit v1.1