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  • #ifndef _API_PUBLIC_H_
    #define _API_PUBLIC_H_
    
    #define API_EINVAL		1	/* invalid argument(s)	*/
    #define API_ENODEV		2	/* no device		*/
    #define API_ENOMEM		3	/* no memory		*/
    #define API_EBUSY		4	/* busy, occupied etc.	*/
    #define API_EIO			5	/* I/O error		*/
    
    typedef	int (*scp_t)(int, int *, ...);
    
    #define API_SIG_VERSION	1
    #define API_SIG_MAGIC	"UBootAPI"
    #define API_SIG_MAGLEN	8
    
    struct api_signature {
    	char		magic[API_SIG_MAGLEN];	/* magic string */
    	uint16_t	version;		/* API version */
    	uint32_t	checksum;		/* checksum of this sig struct */
    	scp_t		syscall;		/* entry point to the API */
    };
    
    enum {
    	API_RSVD = 0,
    	API_GETC,
    	API_PUTC,
    	API_TSTC,
    	API_PUTS,
    	API_RESET,
    	API_GET_SYS_INFO,
    	API_UDELAY,
    	API_GET_TIMER,
    	API_DEV_ENUM,
    	API_DEV_OPEN,
    	API_DEV_CLOSE,
    	API_DEV_READ,
    	API_DEV_WRITE,
    	API_ENV_ENUM,
    	API_ENV_GET,
    	API_ENV_SET,
    	API_MAXCALL
    };
    
    #define MR_ATTR_FLASH	0x0001
    #define MR_ATTR_DRAM	0x0002
    #define MR_ATTR_SRAM	0x0003
    
    struct mem_region {
    	unsigned long	start;
    	unsigned long	size;
    	int		flags;
    };
    
    struct sys_info {
    	unsigned long		clk_bus;
    	unsigned long		clk_cpu;
    	unsigned long		bar;
    	struct mem_region	*mr;
    	int			mr_no;	/* number of memory regions */
    };
    
    #undef CFG_64BIT_LBA
    #ifdef CFG_64BIT_LBA
    typedef	u_int64_t lbasize_t;
    #else
    typedef unsigned long lbasize_t;
    #endif
    typedef unsigned long lbastart_t;
    
    #define DEV_TYP_NONE	0x0000
    #define DEV_TYP_NET	0x0001
    
    #define DEV_TYP_STOR	0x0002
    #define DT_STOR_IDE	0x0010
    #define DT_STOR_SCSI	0x0020
    #define DT_STOR_USB	0x0040
    #define DT_STOR_MMC	0x0080
    
    #define DEV_STA_CLOSED	0x0000		/* invalid, closed */
    #define DEV_STA_OPEN	0x0001		/* open i.e. active */
    
    struct device_info {
    	int	type;
    	void	*cookie;
    
    	union {
    		struct {
    			lbasize_t	block_count;	/* no of blocks */
    			unsigned long	block_size;	/* size of one block */
    		} storage;
    
    		struct {
    			unsigned char	hwaddr[6];
    		} net;
    	} info;
    #define di_stor info.storage
    #define di_net info.net
    
    	int	state;
    };
    
    #endif /* _API_PUBLIC_H_ */