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1 /* SPDX-License-Identifier: GPL-2.0+ OR BSD-2-Clause */
2 /*
3  * (C) Copyright 2007-2008 Semihalf
4  *
5  * Written by: Rafal Jaworowski <raj@semihalf.com>
6  */
7 
8 #ifndef _API_PUBLIC_H_
9 #define _API_PUBLIC_H_
10 
11 #define API_EINVAL		1	/* invalid argument(s)	*/
12 #define API_ENODEV		2	/* no device		*/
13 #define API_ENOMEM		3	/* no memory		*/
14 #define API_EBUSY		4	/* busy, occupied etc.	*/
15 #define API_EIO			5	/* I/O error		*/
16 #define API_ESYSC		6	/* syscall error	*/
17 
18 typedef	int (*scp_t)(int, int *, ...);
19 
20 #define API_SIG_VERSION	1
21 #define API_SIG_MAGIC	"UBootAPI"
22 #define API_SIG_MAGLEN	8
23 
24 struct api_signature {
25 	char		magic[API_SIG_MAGLEN];	/* magic string */
26 	uint16_t	version;		/* API version */
27 	uint32_t	checksum;		/* checksum of this sig struct */
28 	scp_t		syscall;		/* entry point to the API */
29 };
30 
31 enum {
32 	API_RSVD = 0,
33 	API_GETC,
34 	API_PUTC,
35 	API_TSTC,
36 	API_PUTS,
37 	API_RESET,
38 	API_GET_SYS_INFO,
39 	API_UDELAY,
40 	API_GET_TIMER,
41 	API_DEV_ENUM,
42 	API_DEV_OPEN,
43 	API_DEV_CLOSE,
44 	API_DEV_READ,
45 	API_DEV_WRITE,
46 	API_ENV_ENUM,
47 	API_ENV_GET,
48 	API_ENV_SET,
49 	API_DISPLAY_GET_INFO,
50 	API_DISPLAY_DRAW_BITMAP,
51 	API_DISPLAY_CLEAR,
52 	API_MAXCALL
53 };
54 
55 #define MR_ATTR_FLASH	0x0001
56 #define MR_ATTR_DRAM	0x0002
57 #define MR_ATTR_SRAM	0x0003
58 
59 struct mem_region {
60 	unsigned long	start;
61 	unsigned long	size;
62 	int		flags;
63 };
64 
65 struct sys_info {
66 	unsigned long		clk_bus;
67 	unsigned long		clk_cpu;
68 	unsigned long		bar;
69 	struct mem_region	*mr;
70 	int			mr_no;	/* number of memory regions */
71 };
72 
73 #undef CONFIG_SYS_64BIT_LBA
74 #ifdef CONFIG_SYS_64BIT_LBA
75 typedef	u_int64_t lbasize_t;
76 #else
77 typedef unsigned long lbasize_t;
78 #endif
79 typedef unsigned long lbastart_t;
80 
81 #define DEV_TYP_NONE	0x0000
82 #define DEV_TYP_NET	0x0001
83 
84 #define DEV_TYP_STOR	0x0002
85 #define DT_STOR_IDE	0x0010
86 #define DT_STOR_SCSI	0x0020
87 #define DT_STOR_USB	0x0040
88 #define DT_STOR_MMC	0x0080
89 #define DT_STOR_SATA	0x0100
90 
91 #define DEV_STA_CLOSED	0x0000		/* invalid, closed */
92 #define DEV_STA_OPEN	0x0001		/* open i.e. active */
93 
94 struct device_info {
95 	int	type;
96 	void	*cookie;
97 
98 	union {
99 		struct {
100 			lbasize_t	block_count;	/* no of blocks */
101 			unsigned long	block_size;	/* size of one block */
102 		} storage;
103 
104 		struct {
105 			unsigned char	hwaddr[6];
106 		} net;
107 	} info;
108 #define di_stor info.storage
109 #define di_net info.net
110 
111 	int	state;
112 };
113 
114 #define DISPLAY_TYPE_LCD	0x0001
115 #define DISPLAY_TYPE_VIDEO	0x0002
116 
117 struct display_info {
118 	int type;
119 	/* screen size in pixels */
120 	int pixel_width;
121 	int pixel_height;
122 	/* screen size in rows and columns of text */
123 	int screen_rows;
124 	int screen_cols;
125 };
126 
127 #endif /* _API_PUBLIC_H_ */
128