Program Listing for File charon.hpp

↰ Return to documentation for file (lib/charon.hpp)

/* SPDX-License-Identifier: BSD-2-Clause */
#pragma once
#include <stddef.h>
#include <stdint.h>

namespace Gaia {
constexpr auto CHARON_MODULE_MAX = 16;
constexpr auto CHARON_MMAP_SIZE_MAX =
    64;
enum CharonMmapEntryType : uint8_t {
  FREE,
  RESERVED,
  MODULE,
  RECLAIMABLE,
  FRAMEBUFFER
};

struct CharonMmapEntry {
  CharonMmapEntryType type;
  uintptr_t base;
  size_t size;
};

struct CharonMemoryMap {
  size_t count = 0;

  CharonMmapEntry *begin() { return entries; }
  CharonMmapEntry *end() { return entries + count; }

  CharonMmapEntry entries[CHARON_MMAP_SIZE_MAX];
};

struct CharonFramebuffer {
  bool present;
  uintptr_t address;
  uint32_t width, height, pitch, bpp;
  uint8_t red_mask_size;
  uint8_t red_mask_shift;
  uint8_t green_mask_size;
  uint8_t green_mask_shift;
  uint8_t blue_mask_size;
  uint8_t blue_mask_shift;
};

struct CharonModule {
  size_t size = 0;
  uintptr_t address = 0;
  const char *name;
};

struct CharonModules {
  uint16_t count = 0;
  CharonModule modules[CHARON_MODULE_MAX];
};

struct Charon {
  uintptr_t rsdp;
  CharonFramebuffer framebuffer;
  CharonModules modules;
  CharonMemoryMap memory_map;
  int64_t boot_time;
};

} // namespace Gaia