WebSVN – HelenOS-historic – Diff – /boot/trunk/arch/ppc32/loader/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 "ofw.h"
#include "printf.h"
 
ofw_entry ofw;
 
phandle ofw_chosen;
ihandle ofw_mmu;
ihandle ofw_stdout;
 
 
void init(void)
{
    ofw_chosen = ofw_find_device("/chosen");
    if (ofw_chosen == -1)
        halt();
   
    if (ofw_get_property(ofw_chosen, "stdout",  &ofw_stdout, sizeof(ofw_stdout)) <= 0) 
        ofw_stdout = 0;
   
    ofw_mmu = ofw_open("/mmu");
    if (ofw_mmu == -1) {
        puts("Unable to open /mmu node\n");
        halt();
    }
}
 
void halt(void)
{
    ofw_call("exit", 0, 0);
}
 
 
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];
 
 
}
 
 
ihandle ofw_open(const char *name)
{
    return ofw_call("open", 1, 1, name);
}
 
 
void ofw_write(const char *str, const int len)
{
    if (ofw_stdout == 0)
        return;
   
    ofw_call("write", 3, 1, ofw_stdout, str, len);
}
 
 
phandle ofw_find_device(const char *name)
{
    return ofw_call("finddevice", 1, 1, name);
}
 
 
int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen)
{
    return ofw_call("getprop", 4, 1, device, name, buf, buflen);
}
 
 
void *ofw_translate(const void *virt)
{
    return (void *) ofw_call("call-method", 7, 1, "translate", ofw_mmu, virt, 0, 0, 0, 0);
}
 
 
int ofw_map(const void *phys, const void *virt, const int size, const int mode)
{
    return ofw_call("call-method", 6, 1, "map", ofw_mmu, mode, size, virt, phys);
}
 

Rev 953	Rev 956
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 "ofw.h"	29	#include "ofw.h"
30	#include "printf.h"	30	#include "printf.h"
31		31
32	ofw_entry ofw;	32	ofw_entry ofw;
33		33
34	phandle ofw_chosen;	34	phandle ofw_chosen;
35	ihandle ofw_mmu;	35	ihandle ofw_mmu;
36	ihandle ofw_stdout;	36	ihandle ofw_stdout;
37		37
38		38
39	void init(void)	39	void init(void)
40	{	40	{
41	ofw_chosen = ofw_find_device("/chosen");	41	ofw_chosen = ofw_find_device("/chosen");
42	if (ofw_chosen == -1)	42	if (ofw_chosen == -1)
43	halt();	43	halt();
44		44
45	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)
46	ofw_stdout = 0;	46	ofw_stdout = 0;
47		47
48	ofw_mmu = ofw_open("/mmu");	48	ofw_mmu = ofw_open("/mmu");
49	if (ofw_mmu == -1) {	49	if (ofw_mmu == -1) {
50	puts("Unable to open /mmu node\n");	50	puts("Unable to open /mmu node\n");
51	halt();	51	halt();
52	}	52	}
53	}	53	}
54		54
55	void halt(void)	55	void halt(void)
56	{	56	{
57	ofw_call("exit", 0, 0);	57	ofw_call("exit", 0, 0);
58	}	58	}
59		59
60		60
61	int ofw_call(const char *service, const int nargs, const int nret, ...)	61	int ofw_call(const char *service, const int nargs, const int nret, ...)
62	{	62	{
63	va_list list;	63	va_list list;
64	ofw_args_t args;	64	ofw_args_t args;
65	int i;	65	int i;
66		66
67	args.service = service;	67	args.service = service;
68	args.nargs = nargs;	68	args.nargs = nargs;
69	args.nret = nret;	69	args.nret = nret;
70		70
71	va_start(list, nret);	71	va_start(list, nret);
72	for (i = 0; i < nargs; i++)	72	for (i = 0; i < nargs; i++)
73	args.args[i] = va_arg(list, ofw_arg_t);	73	args.args[i] = va_arg(list, ofw_arg_t);
74	va_end(list);	74	va_end(list);
75		75
76	for (i = 0; i < nret; i++)	76	for (i = 0; i < nret; i++)
77	args.args[i + nargs] = 0;	77	args.args[i + nargs] = 0;
78		78
79	ofw(&args);	79	ofw(&args);
80		80
81	if (nret > 0)	-
82	return args.args[nargs + nret - 1];	81	return args.args[nargs];
83	else	-
84	return 0;	-
85	}	82	}
86		83
87		84
88	ihandle ofw_open(const char *name)	85	ihandle ofw_open(const char *name)
89	{	86	{
90	return ofw_call("open", 1, 1, name);	87	return ofw_call("open", 1, 1, name);
91	}	88	}
92		89
93		90
94	void ofw_write(const char *str, const int len)	91	void ofw_write(const char *str, const int len)
95	{	92	{
96	if (ofw_stdout == 0)	93	if (ofw_stdout == 0)
97	return;	94	return;
98		95
99	ofw_call("write", 3, 1, ofw_stdout, str, len);	96	ofw_call("write", 3, 1, ofw_stdout, str, len);
100	}	97	}
101		98
102		99
103	phandle ofw_find_device(const char *name)	100	phandle ofw_find_device(const char *name)
104	{	101	{
105	return ofw_call("finddevice", 1, 1, name);	102	return ofw_call("finddevice", 1, 1, name);
106	}	103	}
107		104
108		105
109	int ofw_get_property(const phandle device, const char name, const void buf, const int buflen)	106	int ofw_get_property(const phandle device, const char name, const void buf, const int buflen)
110	{	107	{
111	return ofw_call("getprop", 4, 1, device, name, buf, buflen);	108	return ofw_call("getprop", 4, 1, device, name, buf, buflen);
112	}	109	}
113		110
114		111
115	void ofw_claim(const void addr, const int size, const int align)	112	void ofw_translate(const void virt)
116	{	113	{
117	return (void *) ofw_call("claim", 3, 1, addr, size, align);	114	return (void *) ofw_call("call-method", 7, 1, "translate", ofw_mmu, virt, 0, 0, 0, 0);
118	}	115	}
119		116
120		117
121	void ofw_translate(const void virt)	118	int ofw_map(const void phys, const void virt, const int size, const int mode)
122	{	119	{
123	return (void *) ofw_call_method(ofw_mmu, "translate", 1, 5, virt);	120	return ofw_call("call-method", 6, 1, "map", ofw_mmu, mode, size, virt, phys);
124	}	121	}
125		122

Subversion Repositories HelenOS-historic

(root)/boot/trunk/arch/ppc32/loader/ofw.c – Rev 953 → 956