52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
#ifndef _KERNEL_DRIVERS_DEVTREE_H
|
|
#define _KERNEL_DRIVERS_DEVTREE_H
|
|
|
|
#include <libkern/c_attrs.h>
|
|
#include <libkern/types.h>
|
|
#include <mem/boot.h>
|
|
|
|
#define DEVTREE_HEADER_SIGNATURE ("odtr3")
|
|
#define DEVTREE_HEADER_SIGNATURE_LEN (sizeof(DEVTREE_HEADER_SIGNATURE) - 1)
|
|
|
|
struct PACKED devtree_header {
|
|
char signature[8];
|
|
uint32_t revision;
|
|
uint32_t flags;
|
|
uint32_t entries_count;
|
|
uint32_t name_list_offset;
|
|
};
|
|
typedef struct devtree_header devtree_header_t;
|
|
|
|
#define DEVTREE_ENTRY_FLAGS_MMIO = (1 << 0)
|
|
#define DEVTREE_ENTRY_TYPE_IO (0)
|
|
#define DEVTREE_ENTRY_TYPE_FB (1)
|
|
#define DEVTREE_ENTRY_TYPE_UART (2)
|
|
#define DEVTREE_ENTRY_TYPE_RAM (3)
|
|
#define DEVTREE_ENTRY_TYPE_STORAGE (4)
|
|
#define DEVTREE_ENTRY_TYPE_BUS_CONTROLLER (5)
|
|
#define DEVTREE_ENTRY_TYPE_RTC (6)
|
|
|
|
struct PACKED devtree_entry {
|
|
uint32_t type;
|
|
uint32_t flags;
|
|
uint64_t region_base;
|
|
uint64_t region_size;
|
|
uint32_t irq_lane;
|
|
uint32_t irq_flags;
|
|
uint32_t irq_priority;
|
|
uint32_t rel_name_offset;
|
|
uint64_t aux1;
|
|
uint64_t aux2;
|
|
uint64_t aux3;
|
|
uint64_t aux4;
|
|
};
|
|
typedef struct devtree_entry devtree_entry_t;
|
|
|
|
int devtree_init(boot_args_t* boot_args);
|
|
devtree_entry_t* devtree_find_device(const char* name);
|
|
const char* devtree_name_of_entry(devtree_entry_t* en);
|
|
devtree_entry_t* devtree_new_entry(const devtree_entry_t* from);
|
|
uint32_t devtree_new_entry_name(const char* ptr);
|
|
|
|
#endif // _KERNEL_DRIVERS_DEVTREE_H
|