api_examples/glue.h

   1 /*
   2  * (C) Copyright 2007 Semihalf
   3  *
   4  * Written by: Rafal Jaworowski <raj@semihalf.com>
   5  *
   6  * See file CREDITS for list of people who contributed to this
   7  * project.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; either version 2 of
  12  * the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  22  * MA 02111-1307 USA
  23  *
  24  */
  25
  26 /*
  27  * This is the header file for conveniency wrapper routines (API glue)
  28  */
  29
  30 #ifndef _API_GLUE_H_
  31 #define _API_GLUE_H_
  32
  33 #define API_SEARCH_START        (255 * 1024 * 1024)     /* start at 1MB below top RAM */
  34 #define API_SEARCH_END          (256 * 1024 * 1024 - 1) /* ...and search to the end */
  35
  36 int     syscall(int, int *, ...);
  37 void *  syscall_ptr;
  38
  39 int     api_search_sig(struct api_signature **sig);
  40
  41 /*
  42  * ub_ library calls are part of the application, not U-Boot code!  They are
  43  * front-end wrappers that are used by the consumer application: they prepare
  44  * arguments for particular syscall and jump to the low level syscall()
  45  */
  46
  47 /* console */
  48 int     ub_getc(void);
  49 int     ub_tstc(void);
  50 void    ub_putc(char c);
  51 void    ub_puts(const char *s);
  52
  53 /* system */
  54 void                    ub_reset(void);
  55 struct sys_info *       ub_get_sys_info(void);
  56
  57 /* time */
  58 void            ub_udelay(unsigned long);
  59 unsigned long   ub_get_timer(unsigned long);
  60
  61 /* env vars */
  62 char *          ub_env_get(const char *name);
  63 void            ub_env_set(const char *name, char *value);
  64 const char *    ub_env_enum(const char *last);
  65
  66 /* devices */
  67 int                     ub_dev_enum(void);
  68 int                     ub_dev_open(int handle);
  69 int                     ub_dev_close(int handle);
  70 int                     ub_dev_read(int handle, void *buf,
  71                                 lbasize_t len, lbastart_t start);
  72 int                     ub_dev_send(int handle, void *buf, int len);
  73 int                     ub_dev_recv(int handle, void *buf, int len);
  74 struct device_info *    ub_dev_get(int);
  75
  76 #endif /* _API_GLUE_H_ */