API for external applications.

This is an API for external (standalone) applications running on top of
U-Boot, and is meant to be more extensible and robust than the existing
jumptable mechanism. It is similar to UNIX syscall approach. See api/README
for more details.

Included is the demo application using this new framework (api_examples).

Please note this is still an experimental feature, and is turned off by
default.

Signed-off-by: Rafal Jaworowski <raj@semihalf.com>

1 files changed, 76 insertions, 0 deletions

diff --git a/api_examples/glue.h b/api_examples/glue.h
new file mode 100644
index 0000000..a82f783
--- /dev/null
+++ b/api_examples/glue.h
@@ -0,0 +1,76 @@
+/*
+ * (C) Copyright 2007 Semihalf
+ *
+ * Written by: Rafal Jaworowski <raj@semihalf.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+/*
+ * This is the header file for conveniency wrapper routines (API glue)
+ */
+
+#ifndef _API_GLUE_H_
+#define _API_GLUE_H_
+
+#define API_SEARCH_START	(255 * 1024 * 1024)	/* start at 1MB below top RAM */
+#define API_SEARCH_END		(256 * 1024 * 1024 - 1)	/* ...and search to the end */
+
+int	syscall(int, int *, ...);
+void *	syscall_ptr;
+
+int	api_search_sig(struct api_signature **sig);
+
+/*
+ * ub_ library calls are part of the application, not U-Boot code!  They are
+ * front-end wrappers that are used by the consumer application: they prepare
+ * arguments for particular syscall and jump to the low level syscall()
+ */
+
+/* console */
+int	ub_getc(void);
+int	ub_tstc(void);
+void	ub_putc(char c);
+void	ub_puts(const char *s);
+
+/* system */
+void			ub_reset(void);
+struct sys_info *	ub_get_sys_info(void);
+
+/* time */
+void		ub_udelay(unsigned long);
+unsigned long	ub_get_timer(unsigned long);
+
+/* env vars */
+char *		ub_env_get(const char *name);
+void		ub_env_set(const char *name, char *value);
+const char *	ub_env_enum(const char *last);
+
+/* devices */
+int			ub_dev_enum(void);
+int			ub_dev_open(int handle);
+int			ub_dev_close(int handle);
+int			ub_dev_read(int handle, void *buf,
+				lbasize_t len, lbastart_t start);
+int			ub_dev_send(int handle, void *buf, int len);
+int			ub_dev_recv(int handle, void *buf, int len);
+struct device_info *	ub_dev_get(int);
+
+#endif /* _API_GLUE_H_ */