xref: /openbmc/u-boot/examples/api/glue.h (revision e8f80a5a)
1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * (C) Copyright 2007 Semihalf
4  *
5  * Written by: Rafal Jaworowski <raj@semihalf.com>
6  */
7 
8 /*
9  * This is the header file for conveniency wrapper routines (API glue)
10  */
11 
12 #ifndef _API_GLUE_H_
13 #define _API_GLUE_H_
14 
15 #define API_SEARCH_LEN		(3 * 1024 * 1024)	/* 3MB search range */
16 
17 #define UB_MAX_MR	5	/* max mem regions number */
18 #define UB_MAX_DEV	6	/* max devices number */
19 
20 extern void *syscall_ptr;
21 extern uint32_t search_hint;
22 
23 int	syscall(int, int *, ...);
24 int	api_search_sig(struct api_signature **sig);
25 
26 /*
27  * The ub_ library calls are part of the application, not U-Boot code!  They
28  * are front-end wrappers that are used by the consumer application: they
29  * prepare arguments for particular syscall and jump to the low level
30  * syscall()
31  */
32 
33 /* console */
34 int	ub_getc(void);
35 int	ub_tstc(void);
36 void	ub_putc(char c);
37 void	ub_puts(const char *s);
38 
39 /* system */
40 void			ub_reset(void);
41 struct sys_info *	ub_get_sys_info(void);
42 
43 /* time */
44 void		ub_udelay(unsigned long);
45 unsigned long	ub_get_timer(unsigned long);
46 
47 /* env vars */
48 char *		ub_env_get(const char *name);
49 void		ub_env_set(const char *name, char *value);
50 const char *	ub_env_enum(const char *last);
51 
52 /* devices */
53 int			ub_dev_enum(void);
54 int			ub_dev_open(int handle);
55 int			ub_dev_close(int handle);
56 int			ub_dev_read(int handle, void *buf, lbasize_t len,
57 				lbastart_t start, lbasize_t *rlen);
58 int			ub_dev_send(int handle, void *buf, int len);
59 int			ub_dev_recv(int handle, void *buf, int len, int *rlen);
60 struct device_info *	ub_dev_get(int);
61 
62 /* display */
63 int ub_display_get_info(int type, struct display_info *di);
64 int ub_display_draw_bitmap(ulong bitmap, int x, int y);
65 void ub_display_clear(void);
66 
67 #endif /* _API_GLUE_H_ */
68