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 <arch/asm.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_get_property(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 *ofw_claim(const void *addr, const int size, const int align)
{
    return (void *) ofw_call("claim", 3, 1, addr, size, align);
}
 
void putchar(const char ch)
{
    ofw_putchar(ch);
}
 

Rev 210	Rev 254
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 <arch/asm.h>
30	#include <stdarg.h>	31	#include <stdarg.h>
31	#include <cpu.h>	32	#include <cpu.h>
32		33
33	ofw_entry ofw;	34	ofw_entry ofw;
34		35
35	phandle ofw_chosen;	36	phandle ofw_chosen;
36	ihandle ofw_stdout;	37	ihandle ofw_stdout;
37		38
38	void ofw_init(void)	39	void ofw_init(void)
39	{	40	{
40	ofw_chosen = ofw_find_device("/chosen");	41	ofw_chosen = ofw_find_device("/chosen");
41	if (ofw_chosen == -1)	42	if (ofw_chosen == -1)
42	ofw_done();	43	ofw_done();
43		44
44	if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0)	45	if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0)
45	ofw_stdout = 0;	46	ofw_stdout = 0;
46	}	47	}
47		48
48	void ofw_done(void)	49	void ofw_done(void)
49	{	50	{
50	ofw_call("exit", 0, 0);	51	ofw_call("exit", 0, 0);
51	cpu_halt();	52	cpu_halt();
52	}	53	}
53		54
54	int ofw_call(const char *service, const int nargs, const int nret, ...)	55	int ofw_call(const char *service, const int nargs, const int nret, ...)
55	{	56	{
56	va_list list;	57	va_list list;
57	ofw_args_t args;	58	ofw_args_t args;
58	int i;	59	int i;
59		60
60	args.service = service;	61	args.service = service;
61	args.nargs = nargs;	62	args.nargs = nargs;
62	args.nret = nret;	63	args.nret = nret;
63		64
64	va_start(list, nret);	65	va_start(list, nret);
65	for (i = 0; i < nargs; i++)	66	for (i = 0; i < nargs; i++)
66	args.args[i] = va_arg(list, ofw_arg_t);	67	args.args[i] = va_arg(list, ofw_arg_t);
67	va_end(list);	68	va_end(list);
68		69
69	for (i = 0; i < nret; i++)	70	for (i = 0; i < nret; i++)
70	args.args[i + nargs] = 0;	71	args.args[i + nargs] = 0;
71		72
72	ofw(&args);	73	ofw(&args);
73		74
74	return args.args[nargs];	75	return args.args[nargs];
75	}	76	}
76		77
77	void ofw_putchar(const char ch)	78	void ofw_putchar(const char ch)
78	{	79	{
79	if (ofw_stdout == 0)	80	if (ofw_stdout == 0)
80	return;	81	return;
81		82
82	ofw_call("write", 3, 1, ofw_stdout, &ch, 1);	83	ofw_call("write", 3, 1, ofw_stdout, &ch, 1);
83	}	84	}
84		85
85	phandle ofw_find_device(const char *name)	86	phandle ofw_find_device(const char *name)
86	{	87	{
87	return ofw_call("finddevice", 1, 1, name);	88	return ofw_call("finddevice", 1, 1, name);
88	}	89	}
89		90
90	int ofw_get_property(const phandle device, const char name, void buf, const int buflen)	91	int ofw_get_property(const phandle device, const char name, void buf, const int buflen)
91	{	92	{
92	return ofw_call("getprop", 4, 1, device, name, buf, buflen);	93	return ofw_call("getprop", 4, 1, device, name, buf, buflen);
93	}	94	}
94		95
95	void ofw_claim(const void addr, const int size, const int align)	96	void ofw_claim(const void addr, const int size, const int align)
96	{	97	{
97	return (void *) ofw_call("claim", 3, 1, addr, size, align);	98	return (void *) ofw_call("claim", 3, 1, addr, size, align);
98	}	99	}
99		100
100	void putchar(const char ch)	101	void putchar(const char ch)
101	{	102	{
102	ofw_putchar(ch);	103	ofw_putchar(ch);
103	}	104	}
104		105

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/genarch/src/ofw/ofw.c @ 669 – Rev 210 → 254