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 <printf.h>
#include <asm.h>
#include <types.h>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
uintptr_t ofw_cif;
 
phandle ofw_chosen;
ihandle ofw_stdout;
phandle ofw_root;
ihandle ofw_mmu;
phandle ofw_memory;
phandle ofw_aliases;
 
static unsigned long ofw_call(const char *service, const int nargs, const int nret, ofw_arg_t *rets, ...)
{
    va_list list;
    ofw_args_t args;
    int i;
   
    args.service = service;
    args.nargs = nargs;
    args.nret = nret;
   
    va_start(list, rets);
    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;
   
    (void) ofw(&args);
 
    for (i = 1; i < nret; i++)
        rets[i - 1] = args.args[i + nargs];
 
    return args.args[nargs];
}
 
 
phandle ofw_find_device(const char *name)
{
    return ofw_call("finddevice", 1, 1, NULL, name);
}
 
 
int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen)
{
    return ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen);
}
 
 
static unsigned int ofw_get_address_cells(const phandle device)
{
    unsigned int ret;
   
    if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0)
        if (ofw_get_property(ofw_root, "#address-cells", &ret, sizeof(ret)) <= 0)
            ret = 1;
   
    return ret;
}
 
 
static unsigned int ofw_get_size_cells(const phandle device)
{
    unsigned int ret;
   
    if (ofw_get_property(device, "#size-cells", &ret, sizeof(ret)) <= 0)
        if (ofw_get_property(ofw_root, "#size-cells", &ret, sizeof(ret)) <= 0)
            ret = 1;
   
    return ret;
}
 
 
static ihandle ofw_open(const char *name)
{
    return ofw_call("open", 1, 1, NULL, 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_root = ofw_find_device("/");
    if (ofw_root == -1) {
        puts("\r\nError: Unable to find / device, halted.\r\n");
        halt();
    }
   
    if (ofw_get_property(ofw_chosen, "mmu",  &ofw_mmu, sizeof(ofw_mmu)) <= 0) {
        puts("\r\nError: Unable to get mmu property, halted.\r\n");
        halt();
    }
   
    ofw_memory = ofw_find_device("/memory");
    if (ofw_memory == -1) {
        puts("\r\nError: Unable to find /memory device, halted.\r\n");
        halt();
    }
   
    ofw_aliases = ofw_find_device("/aliases");
    if (ofw_aliases == -1) {
        puts("\r\nError: Unable to find /aliases device, halted.\r\n");
        halt();
    }
}
 
 
void ofw_write(const char *str, const int len)
{
    if (ofw_stdout == 0)
        return;
   
    ofw_call("write", 3, 1, NULL, ofw_stdout, str, len);
}
 
 
void *ofw_translate(const void *virt)
{
    ofw_arg_t result[4];
    int shift;
 
    if (ofw_call("call-method", 3, 5, result, "translate", ofw_mmu, virt) != 0) {
        puts("Error: MMU method translate() failed, halting.\n");
        halt();
    }
 
    if (ofw_translate_failed(result[0]))
        return NULL;
 
    if (sizeof(unative_t) == 8)
        shift = 32;
    else
        shift = 0;
       
    return (void *) ((result[2]<<shift)|result[3]);
}
 
void *ofw_claim(const void *virt, const int len)
{
    ofw_arg_t retaddr;
    int shift;
 
    if (ofw_call("call-method", 5, 2, &retaddr, "claim", ofw_mmu, 0, len, virt) != 0) {
        puts("Error: MMU method claim() failed, halting.\n");
        halt();
    }
 
    return (void *) retaddr;
}
 
int ofw_map(const void *phys, const void *virt, const int size, const int mode)
{
    uintptr_t phys_hi, phys_lo;
 
    if (sizeof(unative_t) == 8) {
        int shift = 32;
        phys_hi = (uintptr_t) phys >> shift;
        phys_lo = (uintptr_t) phys & 0xffffffff;
    } else {
        phys_hi = 0;
        phys_lo = (uintptr_t) phys;
    }
 
    return ofw_call("call-method", 7, 1, NULL, "map", ofw_mmu, mode, size, virt,
        phys_hi, phys_lo);
}
 
 
int ofw_memmap(memmap_t *map)
{
    unsigned long buf[BUF_SIZE];
    int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(buf));
    if (ret <= 0)
        return false;
       
    unsigned int ac = ofw_get_address_cells(ofw_memory);
    unsigned int sc = ofw_get_size_cells(ofw_memory);
   
    int pos;
    map->total = 0;
    map->count = 0;
    for (pos = 0; (pos < ret / sizeof(unsigned long)) && (map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {
        void * start = (void *) buf[pos + ac - 1];
        unsigned int size = buf[pos + ac + sc - 1];
       
        if (size > 0) {
            map->zones[map->count].start = start;
            map->zones[map->count].size = size;
            map->count++;
            map->total += size;
        }
    }
}
 
 
int ofw_screen(screen_t *screen)
{
    char device_name[BUF_SIZE];
   
    if (ofw_get_property(ofw_aliases, "screen", device_name, sizeof(device_name)) <= 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 1782	Rev 1783
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	#include <asm.h>	31	#include <asm.h>
32	#include <types.h>	32	#include <types.h>
33		33
34	#define MAX_OFW_ARGS 10	-
35		-
36	/** OpenFirmware command structure	-
37	*	-
38	*/	-
39	typedef struct {	-
40	const char service; /< Command name /	-
41	unsigned long nargs; /*< Number of in arguments /	-
42	unsigned long nret; /*< Number of out arguments /	-
43	ofw_arg_t args[MAX_OFW_ARGS]; /*< List of arguments /	-
44	} ofw_args_t;	-
45		-
46	typedef void (ofw_entry)(ofw_args_t );	-
47		-
48	ofw_entry ofw;	34	uintptr_t ofw_cif;
49		35
50	phandle ofw_chosen;	36	phandle ofw_chosen;
51	ihandle ofw_stdout;	37	ihandle ofw_stdout;
52	phandle ofw_root;	38	phandle ofw_root;
53	ihandle ofw_mmu;	39	ihandle ofw_mmu;
54	phandle ofw_memory;	40	phandle ofw_memory;
55	phandle ofw_aliases;	41	phandle ofw_aliases;
56		42
57	static unsigned long ofw_call(const char service, const int nargs, const int nret, ofw_arg_t rets, ...)	43	static unsigned long ofw_call(const char service, const int nargs, const int nret, ofw_arg_t rets, ...)
58	{	44	{
59	va_list list;	45	va_list list;
60	ofw_args_t args;	46	ofw_args_t args;
61	int i;	47	int i;
62		48
63	args.service = service;	49	args.service = service;
64	args.nargs = nargs;	50	args.nargs = nargs;
65	args.nret = nret;	51	args.nret = nret;
66		52
67	va_start(list, rets);	53	va_start(list, rets);
68	for (i = 0; i < nargs; i++)	54	for (i = 0; i < nargs; i++)
69	args.args[i] = va_arg(list, ofw_arg_t);	55	args.args[i] = va_arg(list, ofw_arg_t);
70	va_end(list);	56	va_end(list);
71		57
72	for (i = 0; i < nret; i++)	58	for (i = 0; i < nret; i++)
73	args.args[i + nargs] = 0;	59	args.args[i + nargs] = 0;
74		60
75	ofw(&args);	61	(void) ofw(&args);
76		62
77	for (i = 1; i < nret; i++)	63	for (i = 1; i < nret; i++)
78	rets[i - 1] = args.args[i + nargs];	64	rets[i - 1] = args.args[i + nargs];
79		65
80	return args.args[nargs];	66	return args.args[nargs];
81	}	67	}
82		68
83		69
84	phandle ofw_find_device(const char *name)	70	phandle ofw_find_device(const char *name)
85	{	71	{
86	return ofw_call("finddevice", 1, 1, NULL, name);	72	return ofw_call("finddevice", 1, 1, NULL, name);
87	}	73	}
88		74
89		75
90	int ofw_get_property(const phandle device, const char name, const void buf, const int buflen)	76	int ofw_get_property(const phandle device, const char name, const void buf, const int buflen)
91	{	77	{
92	return ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen);	78	return ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen);
93	}	79	}
94		80
95		81
96	static unsigned int ofw_get_address_cells(const phandle device)	82	static unsigned int ofw_get_address_cells(const phandle device)
97	{	83	{
98	unsigned int ret;	84	unsigned int ret;
99		85
100	if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0)	86	if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0)
101	if (ofw_get_property(ofw_root, "#address-cells", &ret, sizeof(ret)) <= 0)	87	if (ofw_get_property(ofw_root, "#address-cells", &ret, sizeof(ret)) <= 0)
102	ret = 1;	88	ret = 1;
103		89
104	return ret;	90	return ret;
105	}	91	}
106		92
107		93
108	static unsigned int ofw_get_size_cells(const phandle device)	94	static unsigned int ofw_get_size_cells(const phandle device)
109	{	95	{
110	unsigned int ret;	96	unsigned int ret;
111		97
112	if (ofw_get_property(device, "#size-cells", &ret, sizeof(ret)) <= 0)	98	if (ofw_get_property(device, "#size-cells", &ret, sizeof(ret)) <= 0)
113	if (ofw_get_property(ofw_root, "#size-cells", &ret, sizeof(ret)) <= 0)	99	if (ofw_get_property(ofw_root, "#size-cells", &ret, sizeof(ret)) <= 0)
114	ret = 1;	100	ret = 1;
115		101
116	return ret;	102	return ret;
117	}	103	}
118		104
119		105
120	static ihandle ofw_open(const char *name)	106	static ihandle ofw_open(const char *name)
121	{	107	{
122	return ofw_call("open", 1, 1, NULL, name);	108	return ofw_call("open", 1, 1, NULL, name);
123	}	109	}
124		110
125		111
126	void init(void)	112	void init(void)
127	{	113	{
128	ofw_chosen = ofw_find_device("/chosen");	114	ofw_chosen = ofw_find_device("/chosen");
129	if (ofw_chosen == -1)	115	if (ofw_chosen == -1)
130	halt();	116	halt();
131		117
132	if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0)	118	if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0)
133	ofw_stdout = 0;	119	ofw_stdout = 0;
134		120
135	ofw_root = ofw_find_device("/");	121	ofw_root = ofw_find_device("/");
136	if (ofw_root == -1) {	122	if (ofw_root == -1) {
137	puts("\r\nError: Unable to find / device, halted.\r\n");	123	puts("\r\nError: Unable to find / device, halted.\r\n");
138	halt();	124	halt();
139	}	125	}
140		126
141	if (ofw_get_property(ofw_chosen, "mmu", &ofw_mmu, sizeof(ofw_mmu)) <= 0) {	127	if (ofw_get_property(ofw_chosen, "mmu", &ofw_mmu, sizeof(ofw_mmu)) <= 0) {
142	puts("\r\nError: Unable to get mmu property, halted.\r\n");	128	puts("\r\nError: Unable to get mmu property, halted.\r\n");
143	halt();	129	halt();
144	}	130	}
145		131
146	ofw_memory = ofw_find_device("/memory");	132	ofw_memory = ofw_find_device("/memory");
147	if (ofw_memory == -1) {	133	if (ofw_memory == -1) {
148	puts("\r\nError: Unable to find /memory device, halted.\r\n");	134	puts("\r\nError: Unable to find /memory device, halted.\r\n");
149	halt();	135	halt();
150	}	136	}
151		137
152	ofw_aliases = ofw_find_device("/aliases");	138	ofw_aliases = ofw_find_device("/aliases");
153	if (ofw_aliases == -1) {	139	if (ofw_aliases == -1) {
154	puts("\r\nError: Unable to find /aliases device, halted.\r\n");	140	puts("\r\nError: Unable to find /aliases device, halted.\r\n");
155	halt();	141	halt();
156	}	142	}
157	}	143	}
158		144
159		145
160	void ofw_write(const char *str, const int len)	146	void ofw_write(const char *str, const int len)
161	{	147	{
162	if (ofw_stdout == 0)	148	if (ofw_stdout == 0)
163	return;	149	return;
164		150
165	ofw_call("write", 3, 1, NULL, ofw_stdout, str, len);	151	ofw_call("write", 3, 1, NULL, ofw_stdout, str, len);
166	}	152	}
167		153
168		154
169	void ofw_translate(const void virt)	155	void ofw_translate(const void virt)
170	{	156	{
171	ofw_arg_t result[4];	157	ofw_arg_t result[4];
172	int shift;	158	int shift;
173		159
174	if (ofw_call("call-method", 3, 5, result, "translate", ofw_mmu, virt) != 0) {	160	if (ofw_call("call-method", 3, 5, result, "translate", ofw_mmu, virt) != 0) {
175	puts("Error: MMU method translate() failed, halting.\n");	161	puts("Error: MMU method translate() failed, halting.\n");
176	halt();	162	halt();
177	}	163	}
178		164
-		165	if (ofw_translate_failed(result[0]))
-		166	return NULL;
-		167
179	if (sizeof(unative_t) == 8)	168	if (sizeof(unative_t) == 8)
180	shift = 32;	169	shift = 32;
181	else	170	else
182	shift = 0;	171	shift = 0;
183		172
184	return (void *) (((result[2]&0xffffffff)<<shift)\|((result[3])&0xffffffff));	173	return (void *) ((result[2]<<shift)\|result[3]);
185	}	174	}
186		175
-		176	void ofw_claim(const void virt, const int len)
-		177	{
-		178	ofw_arg_t retaddr;
-		179	int shift;
-		180
-		181	if (ofw_call("call-method", 5, 2, &retaddr, "claim", ofw_mmu, 0, len, virt) != 0) {
-		182	puts("Error: MMU method claim() failed, halting.\n");
-		183	halt();
-		184	}
-		185
-		186	return (void *) retaddr;
-		187	}
187		188
188	int ofw_map(const void phys, const void virt, const int size, const int mode)	189	int ofw_map(const void phys, const void virt, const int size, const int mode)
189	{	190	{
190	uintptr_t phys_hi, phys_lo;	191	uintptr_t phys_hi, phys_lo;
191		192
192	if (sizeof(unative_t) == 8) {	193	if (sizeof(unative_t) == 8) {
193	int shift = 32;	194	int shift = 32;
194	phys_hi = (uintptr_t) phys >> shift;	195	phys_hi = (uintptr_t) phys >> shift;
195	phys_lo = (uintptr_t) phys & 0xffffffff;	196	phys_lo = (uintptr_t) phys & 0xffffffff;
196	} else {	197	} else {
197	phys_hi = 0;	198	phys_hi = 0;
198	phys_lo = (uintptr_t) phys;	199	phys_lo = (uintptr_t) phys;
199	}	200	}
200		201
201	return ofw_call("call-method", 7, 1, NULL, "map", ofw_mmu, mode, size, virt,	202	return ofw_call("call-method", 7, 1, NULL, "map", ofw_mmu, mode, size, virt,
202	phys_hi, phys_lo);	203	phys_hi, phys_lo);
203	}	204	}
204		205
205		206
206	int ofw_memmap(memmap_t *map)	207	int ofw_memmap(memmap_t *map)
207	{	208	{
208	unsigned long buf[BUF_SIZE];	209	unsigned long buf[BUF_SIZE];
209	int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(buf));	210	int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(buf));
210	if (ret <= 0)	211	if (ret <= 0)
211	return false;	212	return false;
212		213
213	unsigned int ac = ofw_get_address_cells(ofw_memory);	214	unsigned int ac = ofw_get_address_cells(ofw_memory);
214	unsigned int sc = ofw_get_size_cells(ofw_memory);	215	unsigned int sc = ofw_get_size_cells(ofw_memory);
215		216
216	int pos;	217	int pos;
217	map->total = 0;	218	map->total = 0;
218	map->count = 0;	219	map->count = 0;
219	for (pos = 0; (pos < ret / sizeof(unsigned long)) && (map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {	220	for (pos = 0; (pos < ret / sizeof(unsigned long)) && (map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {
220	void * start = (void *) buf[pos + ac - 1];	221	void * start = (void *) buf[pos + ac - 1];
221	unsigned int size = buf[pos + ac + sc - 1];	222	unsigned int size = buf[pos + ac + sc - 1];
222		223
223	if (size > 0) {	224	if (size > 0) {
224	map->zones[map->count].start = start;	225	map->zones[map->count].start = start;
225	map->zones[map->count].size = size;	226	map->zones[map->count].size = size;
226	map->count++;	227	map->count++;
227	map->total += size;	228	map->total += size;
228	}	229	}
229	}	230	}
230	}	231	}
231		232
232		233
233	int ofw_screen(screen_t *screen)	234	int ofw_screen(screen_t *screen)
234	{	235	{
235	char device_name[BUF_SIZE];	236	char device_name[BUF_SIZE];
236		237
237	if (ofw_get_property(ofw_aliases, "screen", device_name, sizeof(device_name)) <= 0)	238	if (ofw_get_property(ofw_aliases, "screen", device_name, sizeof(device_name)) <= 0)
238	return false;	239	return false;
239		240
240	phandle device = ofw_find_device(device_name);	241	phandle device = ofw_find_device(device_name);
241	if (device == -1)	242	if (device == -1)
242	return false;	243	return false;
243		244
244	if (ofw_get_property(device, "address", &screen->addr, sizeof(screen->addr)) <= 0)	245	if (ofw_get_property(device, "address", &screen->addr, sizeof(screen->addr)) <= 0)
245	return false;	246	return false;
246		247
247	if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0)	248	if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0)
248	return false;	249	return false;
249		250
250	if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0)	251	if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0)
251	return false;	252	return false;
252		253
253	if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0)	254	if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0)
254	return false;	255	return false;
255		256
256	if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0)	257	if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0)
257	return false;	258	return false;
258		259
259	return true;	260	return true;
260	}	261	}
261		262

Subversion Repositories HelenOS-historic

(root)/boot/trunk/genarch/ofw.c – Rev 1782 → 1783