WebSVN – HelenOS-historic – Diff – /kernel/trunk/genarch/src/ofw/ofw.c


/*
 * Copyright (C) 2005 Martin Decky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#include <arch/drivers/ofw.h>
#include <stdarg.h>
#include <cpu.h>
 
ofw_entry ofw;
 
phandle ofw_chosen;
ihandle ofw_stdout;
 
void ofw_init(void)
{
    ofw_chosen = ofw_find_device("/chosen");
    if (ofw_chosen == -1)
        ofw_done();
   
    if (ofw_call("getprop", 4, 1, ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0)
        ofw_stdout = 0;
}
 
void ofw_done(void)
{
    ofw_call("exit", 0, 0);
    cpu_halt();
}
 
int ofw_call(const char *service, const int nargs, const int nret, ...)
{
    va_list list;
    ofw_args_t args;
    int i;
   
    args.service = service;
    args.nargs = nargs;
    args.nret = nret;
   
    va_start(list, nret);
    for (i = 0; i < nargs; i++)
        args.args[i] = va_arg(list, ofw_arg_t);
    va_end(list);
   
    for (i = 0; i < nret; i++)
        args.args[i + nargs] = 0;
   
    ofw(&args);
   
    return args.args[nargs];
}
 
void ofw_putchar(const char ch)
{
    if (ofw_stdout == 0)
        return;
   
    ofw_call("write", 3, 1, ofw_stdout, &ch, 1);
}
 
phandle ofw_find_device(const char *name)
{
    return ofw_call("finddevice", 1, 1, name);
}
 
int ofw_get_property(const phandle device, const char *name, void *buf, const int buflen)
{
    return ofw_call("getprop", 4, 1, device, name, buf, buflen);
}
 
void putchar(const char ch)
{
    ofw_putchar(ch);
}
 

Rev 191	Rev 201
1	/*	1	/*
2	* Copyright (C) 2005 Martin Decky	2	* Copyright (C) 2005 Martin Decky
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#include <arch/drivers/ofw.h>	29	#include <arch/drivers/ofw.h>
30	#include <stdarg.h>	30	#include <stdarg.h>
-		31	#include <cpu.h>
31		32
32	ofw_entry ofw;	33	ofw_entry ofw;
33		34
34	phandle ofw_chosen;	35	phandle ofw_chosen;
35	ihandle ofw_stdout;	36	ihandle ofw_stdout;
36		37
37	void ofw_init(void)	38	void ofw_init(void)
38	{	39	{
39	ofw_chosen = ofw_find_device("/chosen");	40	ofw_chosen = ofw_find_device("/chosen");
40	if (ofw_chosen == -1)	41	if (ofw_chosen == -1)
41	ofw_done();	42	ofw_done();
42		43
43	if (ofw_call("getprop", 4, 1, ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0)	44	if (ofw_call("getprop", 4, 1, ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0)
44	ofw_stdout = 0;	45	ofw_stdout = 0;
45	}	46	}
46		47
47	void ofw_done(void)	48	void ofw_done(void)
48	{	49	{
49	ofw_call("exit", 0, 0);	50	ofw_call("exit", 0, 0);
50	cpu_halt();	51	cpu_halt();
51	}	52	}
52		53
53	int ofw_call(const char *service, const int nargs, const int nret, ...)	54	int ofw_call(const char *service, const int nargs, const int nret, ...)
54	{	55	{
55	va_list list;	56	va_list list;
56	ofw_args_t args;	57	ofw_args_t args;
57	int i;	58	int i;
58		59
59	args.service = service;	60	args.service = service;
60	args.nargs = nargs;	61	args.nargs = nargs;
61	args.nret = nret;	62	args.nret = nret;
62		63
63	va_start(list, nret);	64	va_start(list, nret);
64	for (i = 0; i < nargs; i++)	65	for (i = 0; i < nargs; i++)
65	args.args[i] = va_arg(list, ofw_arg_t);	66	args.args[i] = va_arg(list, ofw_arg_t);
66	va_end(list);	67	va_end(list);
67		68
68	for (i = 0; i < nret; i++)	69	for (i = 0; i < nret; i++)
69	args.args[i + nargs] = 0;	70	args.args[i + nargs] = 0;
70		71
71	ofw(&args);	72	ofw(&args);
72		73
73	return args.args[nargs];	74	return args.args[nargs];
74	}	75	}
75		76
76	void ofw_putchar(const char ch)	77	void ofw_putchar(const char ch)
77	{	78	{
78	if (ofw_stdout == 0)	79	if (ofw_stdout == 0)
79	return;	80	return;
80		81
81	ofw_call("write", 3, 1, ofw_stdout, &ch, 1);	82	ofw_call("write", 3, 1, ofw_stdout, &ch, 1);
82	}	83	}
83		84
84	phandle ofw_find_device(const char *name)	85	phandle ofw_find_device(const char *name)
85	{	86	{
86	return ofw_call("finddevice", 1, 1, name);	87	return ofw_call("finddevice", 1, 1, name);
87	}	88	}
88		89
89	int ofw_get_property(const phandle device, const char name, void buf, const int buflen)	90	int ofw_get_property(const phandle device, const char name, void buf, const int buflen)
90	{	91	{
91	return ofw_call("getprop", 4, 1, device, name, buf, buflen);	92	return ofw_call("getprop", 4, 1, device, name, buf, buflen);
92	}	93	}
93		94
94	void putchar(const char ch)	95	void putchar(const char ch)
95	{	96	{
96	ofw_putchar(ch);	97	ofw_putchar(ch);
97	}	98	}
98		99

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/genarch/src/ofw/ofw.c @ 669 – Rev 191 → 201