WebSVN – HelenOS-historic – Diff – /boot/trunk/genarch/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 "asm.h"
#include "printf.h"
 
#define MAX_OFW_ARGS    10
#define STRING_SIZE     1024
 
typedef unsigned int ofw_arg_t;
typedef unsigned int ihandle;
typedef unsigned int phandle;
 
/** OpenFirmware command structure
 *
 */
typedef struct {
    const char *service;          /**< Command name */
    unsigned int nargs;           /**< Number of in arguments */
    unsigned int nret;            /**< Number of out arguments */
    ofw_arg_t args[MAX_OFW_ARGS]; /**< List of arguments */
} ofw_args_t;
 
typedef void (*ofw_entry)(ofw_args_t *);
 
 
ofw_entry ofw;
 
phandle ofw_chosen;
phandle ofw_aliases;
ihandle ofw_mmu;
ihandle ofw_stdout;
 
 
static 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];
}
 
 
static phandle ofw_find_device(const char *name)
{
    return ofw_call("finddevice", 1, 1, name);
}
 
 
static 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);
}
 
static ihandle ofw_open(const char *name)
{
    return ofw_call("open", 1, 1, name);
}
 
 
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_aliases = ofw_find_device("/aliases");
    if (ofw_aliases == -1) {
        puts("\nUnable to find /aliases device\n");
        halt();
    }
   
    ofw_mmu = ofw_open("/mmu");
    if (ofw_mmu == -1) {
        puts("\nUnable to open /mmu node\n");
        halt();
    }
}
 
 
void ofw_write(const char *str, const int len)
{
    if (ofw_stdout == 0)
        return;
   
    ofw_call("write", 3, 1, ofw_stdout, str, len);
}
 
 
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);
}
 
 
int ofw_memmap(memmap_t *map)
{
    int i;
    int ret;
 
    phandle handle = ofw_find_device("/memory");
    if (handle == -1)
        return false;
   
    ret = ofw_get_property(handle, "reg", &map->zones, sizeof(map->zones));
    if (ret == -1)
        return false;
   
    map->total = 0;
    map->count = 0;
    for (i = 0; i < MEMMAP_MAX_RECORDS; i++) {
        if (map->zones[i].size == 0)
            break;
        map->count++;
        map->total += map->zones[i].size;
    }
}
 
 
int ofw_screen(screen_t *screen)
{
    char device_name[STRING_SIZE];
   
    if (ofw_get_property(ofw_aliases, "screen", device_name, STRING_SIZE) <= 0)
        return false;
   
    phandle device = ofw_find_device(device_name);
    if (device == -1)
        return false;
   
    if (ofw_get_property(device, "address", &screen->addr, sizeof(screen->addr)) <= 0)
        return false;
   
    if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0)
        return false;
   
    if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0)
        return false;
   
    if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0)
        return false;
   
    if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0)
        return false;
   
    return true;
}
 

Rev 1075	Rev 1130
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 "asm.h"	30	#include "asm.h"
31	#include "printf.h"	31	#include "printf.h"
32		32
33	#define MAX_OFW_ARGS 10	33	#define MAX_OFW_ARGS 10
-		34	#define STRING_SIZE 1024
34		35
35	typedef unsigned int ofw_arg_t;	36	typedef unsigned int ofw_arg_t;
36	typedef unsigned int ihandle;	37	typedef unsigned int ihandle;
37	typedef unsigned int phandle;	38	typedef unsigned int phandle;
38		39
39	/** OpenFirmware command structure	40	/** OpenFirmware command structure
40	*	41	*
41	*/	42	*/
42	typedef struct {	43	typedef struct {
43	const char service; /< Command name /	44	const char service; /< Command name /
44	unsigned int nargs; /*< Number of in arguments /	45	unsigned int nargs; /*< Number of in arguments /
45	unsigned int nret; /*< Number of out arguments /	46	unsigned int nret; /*< Number of out arguments /
46	ofw_arg_t args[MAX_OFW_ARGS]; /*< List of arguments /	47	ofw_arg_t args[MAX_OFW_ARGS]; /*< List of arguments /
47	} ofw_args_t;	48	} ofw_args_t;
48		49
49	typedef void (ofw_entry)(ofw_args_t );	50	typedef void (ofw_entry)(ofw_args_t );
50		51
51		52
52	ofw_entry ofw;	53	ofw_entry ofw;
53		54
54	phandle ofw_chosen;	55	phandle ofw_chosen;
-		56	phandle ofw_aliases;
55	ihandle ofw_mmu;	57	ihandle ofw_mmu;
56	ihandle ofw_stdout;	58	ihandle ofw_stdout;
57		59
58		60
59	static int ofw_call(const char *service, const int nargs, const int nret, ...)	61	static int ofw_call(const char *service, const int nargs, const int nret, ...)
60	{	62	{
61	va_list list;	63	va_list list;
62	ofw_args_t args;	64	ofw_args_t args;
63	int i;	65	int i;
64		66
65	args.service = service;	67	args.service = service;
66	args.nargs = nargs;	68	args.nargs = nargs;
67	args.nret = nret;	69	args.nret = nret;
68		70
69	va_start(list, nret);	71	va_start(list, nret);
70	for (i = 0; i < nargs; i++)	72	for (i = 0; i < nargs; i++)
71	args.args[i] = va_arg(list, ofw_arg_t);	73	args.args[i] = va_arg(list, ofw_arg_t);
72	va_end(list);	74	va_end(list);
73		75
74	for (i = 0; i < nret; i++)	76	for (i = 0; i < nret; i++)
75	args.args[i + nargs] = 0;	77	args.args[i + nargs] = 0;
76		78
77	ofw(&args);	79	ofw(&args);
78		80
79	return args.args[nargs];	81	return args.args[nargs];
80	}	82	}
81		83
82		84
83	static phandle ofw_find_device(const char *name)	85	static phandle ofw_find_device(const char *name)
84	{	86	{
85	return ofw_call("finddevice", 1, 1, name);	87	return ofw_call("finddevice", 1, 1, name);
86	}	88	}
87		89
88		90
89	static int ofw_get_property(const phandle device, const char name, const void buf, const int buflen)	91	static int ofw_get_property(const phandle device, const char name, const void buf, const int buflen)
90	{	92	{
91	return ofw_call("getprop", 4, 1, device, name, buf, buflen);	93	return ofw_call("getprop", 4, 1, device, name, buf, buflen);
92	}	94	}
93		95
94	static ihandle ofw_open(const char *name)	96	static ihandle ofw_open(const char *name)
95	{	97	{
96	return ofw_call("open", 1, 1, name);	98	return ofw_call("open", 1, 1, name);
97	}	99	}
98		100
99		101
100	void init(void)	102	void init(void)
101	{	103	{
102	ofw_chosen = ofw_find_device("/chosen");	104	ofw_chosen = ofw_find_device("/chosen");
103	if (ofw_chosen == -1)	105	if (ofw_chosen == -1)
104	halt();	106	halt();
105		107
106	if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0)	108	if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0)
107	ofw_stdout = 0;	109	ofw_stdout = 0;
108		110
-		111	ofw_aliases = ofw_find_device("/aliases");
-		112	if (ofw_aliases == -1) {
-		113	puts("\nUnable to find /aliases device\n");
-		114	halt();
-		115	}
-		116
109	ofw_mmu = ofw_open("/mmu");	117	ofw_mmu = ofw_open("/mmu");
110	if (ofw_mmu == -1) {	118	if (ofw_mmu == -1) {
111	puts("Unable to open /mmu node\n");	119	puts("\nUnable to open /mmu node\n");
112	halt();	120	halt();
113	}	121	}
114	}	122	}
115		123
116		124
117	void ofw_write(const char *str, const int len)	125	void ofw_write(const char *str, const int len)
118	{	126	{
119	if (ofw_stdout == 0)	127	if (ofw_stdout == 0)
120	return;	128	return;
121		129
122	ofw_call("write", 3, 1, ofw_stdout, str, len);	130	ofw_call("write", 3, 1, ofw_stdout, str, len);
123	}	131	}
124		132
125		133
126	void ofw_translate(const void virt)	134	void ofw_translate(const void virt)
127	{	135	{
128	return (void *) ofw_call("call-method", 7, 1, "translate", ofw_mmu, virt, 0, 0, 0, 0);	136	return (void *) ofw_call("call-method", 7, 1, "translate", ofw_mmu, virt, 0, 0, 0, 0);
129	}	137	}
130		138
131		139
132	int ofw_map(const void phys, const void virt, const int size, const int mode)	140	int ofw_map(const void phys, const void virt, const int size, const int mode)
133	{	141	{
134	return ofw_call("call-method", 6, 1, "map", ofw_mmu, mode, size, virt, phys);	142	return ofw_call("call-method", 6, 1, "map", ofw_mmu, mode, size, virt, phys);
135	}	143	}
136		144
137		145
138	int ofw_memmap(memmap_t *map)	146	int ofw_memmap(memmap_t *map)
139	{	147	{
140	int i;	148	int i;
141	int ret;	149	int ret;
142		150
143	phandle handle = ofw_find_device("/memory");	151	phandle handle = ofw_find_device("/memory");
144	if (handle == -1)	152	if (handle == -1)
145	return false;	153	return false;
146		154
147	ret = ofw_get_property(handle, "reg", &map->zones, sizeof(map->zones));	155	ret = ofw_get_property(handle, "reg", &map->zones, sizeof(map->zones));
148	if (ret == -1)	156	if (ret == -1)
149	return false;	157	return false;
150		158
151	map->total = 0;	159	map->total = 0;
152	map->count = 0;	160	map->count = 0;
153	for (i = 0; i < MEMMAP_MAX_RECORDS; i++) {	161	for (i = 0; i < MEMMAP_MAX_RECORDS; i++) {
154	if (map->zones[i].size == 0)	162	if (map->zones[i].size == 0)
155	break;	163	break;
156	map->count++;	164	map->count++;
157	map->total += map->zones[i].size;	165	map->total += map->zones[i].size;
158	}	166	}
159	}	167	}
-		168
-		169
-		170	int ofw_screen(screen_t *screen)
-		171	{
-		172	char device_name[STRING_SIZE];
-		173
-		174	if (ofw_get_property(ofw_aliases, "screen", device_name, STRING_SIZE) <= 0)
-		175	return false;
-		176
-		177	phandle device = ofw_find_device(device_name);
-		178	if (device == -1)
-		179	return false;
-		180
-		181	if (ofw_get_property(device, "address", &screen->addr, sizeof(screen->addr)) <= 0)
-		182	return false;
-		183
-		184	if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0)
-		185	return false;
-		186
-		187	if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0)
-		188	return false;
-		189
-		190	if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0)
-		191	return false;
-		192
-		193	if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0)
-		194	return false;
-		195
-		196	return true;
-		197	}
160		198

Subversion Repositories HelenOS-historic

(root)/boot/trunk/genarch/ofw.c @ 1764 – Rev 1075 → 1130