WebSVN – HelenOS – Diff – /trunk/boot/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 <ofwarch.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;
 
void ofw_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();
    }
}
 
/** Perform a call to OpenFirmware client interface.
 *
 * @param service String identifying the service requested.
 * @param nargs Number of input arguments.
 * @param nret Number of output arguments. This includes the return value.
 * @param rets Buffer for output arguments or NULL. The buffer must accommodate nret - 1 items.
 *
 * @return Return value returned by the client interface.
 */
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 = (ofw_arg_t) 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);
}
 
 
unsigned int ofw_get_address_cells(const phandle device)
{
    unsigned int ret = 1;
   
    if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0)
        if (ofw_get_property(ofw_root, "#address-cells", &ret, sizeof(ret)) <= 0)
            ret = OFW_ADDRESS_CELLS;
   
    return ret;
}
 
 
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 = OFW_SIZE_CELLS;
   
    return ret;
}
 
 
static ihandle ofw_open(const char *name)
{
    return ofw_call("open", 1, 1, NULL, name);
}
 
 
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 int ac = ofw_get_address_cells(ofw_memory);
    unsigned int sc = ofw_get_size_cells(ofw_memory);
 
    uint32_t buf[((ac+sc)*MEMMAP_MAX_RECORDS)];
    int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(buf));
    if (ret <= 0)       /* ret is the number of written bytes */
        return false;
 
    int pos;
    map->total = 0;
    map->count = 0;
    for (pos = 0; (pos < ret / sizeof(uint32_t)) && (map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {
        void * start = (void *) ((uintptr_t) 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;
        }
    }
   
    return true;
}
 
 
int ofw_screen(screen_t *screen)
{
    char device_name[BUF_SIZE];
    uint32_t virtaddr;
   
    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", &virtaddr, sizeof(virtaddr)) <= 0)
        return false;
 
    screen->addr = (void *) ((uintptr_t) virtaddr);
 
    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 1789	Rev 1790
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 <ofwarch.h>	30	#include <ofwarch.h>
31	#include <printf.h>	31	#include <printf.h>
32	#include <asm.h>	32	#include <asm.h>
33	#include <types.h>	33	#include <types.h>
34		34
35	uintptr_t ofw_cif;	35	uintptr_t ofw_cif;
36		36
37	phandle ofw_chosen;	37	phandle ofw_chosen;
38	ihandle ofw_stdout;	38	ihandle ofw_stdout;
39	phandle ofw_root;	39	phandle ofw_root;
40	ihandle ofw_mmu;	40	ihandle ofw_mmu;
41	phandle ofw_memory;	41	phandle ofw_memory;
42	phandle ofw_aliases;	42	phandle ofw_aliases;
43		43
44	void ofw_init(void)	44	void ofw_init(void)
45	{	45	{
46	ofw_chosen = ofw_find_device("/chosen");	46	ofw_chosen = ofw_find_device("/chosen");
47	if (ofw_chosen == -1)	47	if (ofw_chosen == -1)
48	halt();	48	halt();
49		49
50	if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0)	50	if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0)
51	ofw_stdout = 0;	51	ofw_stdout = 0;
52		52
53	ofw_root = ofw_find_device("/");	53	ofw_root = ofw_find_device("/");
54	if (ofw_root == -1) {	54	if (ofw_root == -1) {
55	puts("\r\nError: Unable to find / device, halted.\r\n");	55	puts("\r\nError: Unable to find / device, halted.\r\n");
56	halt();	56	halt();
57	}	57	}
58		58
59	if (ofw_get_property(ofw_chosen, "mmu", &ofw_mmu, sizeof(ofw_mmu)) <= 0) {	59	if (ofw_get_property(ofw_chosen, "mmu", &ofw_mmu, sizeof(ofw_mmu)) <= 0) {
60	puts("\r\nError: Unable to get mmu property, halted.\r\n");	60	puts("\r\nError: Unable to get mmu property, halted.\r\n");
61	halt();	61	halt();
62	}	62	}
63		63
64	ofw_memory = ofw_find_device("/memory");	64	ofw_memory = ofw_find_device("/memory");
65	if (ofw_memory == -1) {	65	if (ofw_memory == -1) {
66	puts("\r\nError: Unable to find /memory device, halted.\r\n");	66	puts("\r\nError: Unable to find /memory device, halted.\r\n");
67	halt();	67	halt();
68	}	68	}
69		69
70	ofw_aliases = ofw_find_device("/aliases");	70	ofw_aliases = ofw_find_device("/aliases");
71	if (ofw_aliases == -1) {	71	if (ofw_aliases == -1) {
72	puts("\r\nError: Unable to find /aliases device, halted.\r\n");	72	puts("\r\nError: Unable to find /aliases device, halted.\r\n");
73	halt();	73	halt();
74	}	74	}
75	}	75	}
76		76
-		77	/** Perform a call to OpenFirmware client interface.
-		78	*
-		79	* @param service String identifying the service requested.
-		80	* @param nargs Number of input arguments.
-		81	* @param nret Number of output arguments. This includes the return value.
-		82	* @param rets Buffer for output arguments or NULL. The buffer must accommodate nret - 1 items.
77		83	*
-		84	* @return Return value returned by the client interface.
-		85	*/
78	static unsigned long ofw_call(const char service, const int nargs, const int nret, ofw_arg_t rets, ...)	86	static unsigned long ofw_call(const char service, const int nargs, const int nret, ofw_arg_t rets, ...)
79	{	87	{
80	va_list list;	88	va_list list;
81	ofw_args_t args;	89	ofw_args_t args;
82	int i;	90	int i;
83		91
84	args.service = service;	92	args.service = (ofw_arg_t) service;
85	args.nargs = nargs;	93	args.nargs = nargs;
86	args.nret = nret;	94	args.nret = nret;
87		95
88	va_start(list, rets);	96	va_start(list, rets);
89	for (i = 0; i < nargs; i++)	97	for (i = 0; i < nargs; i++)
90	args.args[i] = va_arg(list, ofw_arg_t);	98	args.args[i] = va_arg(list, ofw_arg_t);
91	va_end(list);	99	va_end(list);
92		100
93	for (i = 0; i < nret; i++)	101	for (i = 0; i < nret; i++)
94	args.args[i + nargs] = 0;	102	args.args[i + nargs] = 0;
95		103
96	(void) ofw(&args);	104	(void) ofw(&args);
97		105
98	for (i = 1; i < nret; i++)	106	for (i = 1; i < nret; i++)
99	rets[i - 1] = args.args[i + nargs];	107	rets[i - 1] = args.args[i + nargs];
100		108
101	return args.args[nargs];	109	return args.args[nargs];
102	}	110	}
103		111
104		112
105	phandle ofw_find_device(const char *name)	113	phandle ofw_find_device(const char *name)
106	{	114	{
107	return ofw_call("finddevice", 1, 1, NULL, name);	115	return ofw_call("finddevice", 1, 1, NULL, name);
108	}	116	}
109		117
110		118
111	int ofw_get_property(const phandle device, const char name, const void buf, const int buflen)	119	int ofw_get_property(const phandle device, const char name, const void buf, const int buflen)
112	{	120	{
113	return ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen);	121	return ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen);
114	}	122	}
115		123
116		124
117	unsigned int ofw_get_address_cells(const phandle device)	125	unsigned int ofw_get_address_cells(const phandle device)
118	{	126	{
119	unsigned int ret = 1;	127	unsigned int ret = 1;
120		128
121	if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0)	129	if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0)
122	if (ofw_get_property(ofw_root, "#address-cells", &ret, sizeof(ret)) <= 0)	130	if (ofw_get_property(ofw_root, "#address-cells", &ret, sizeof(ret)) <= 0)
123	ret = OFW_ADDRESS_CELLS;	131	ret = OFW_ADDRESS_CELLS;
124		132
125	return ret;	133	return ret;
126	}	134	}
127		135
128		136
129	unsigned int ofw_get_size_cells(const phandle device)	137	unsigned int ofw_get_size_cells(const phandle device)
130	{	138	{
131	unsigned int ret;	139	unsigned int ret;
132		140
133	if (ofw_get_property(device, "#size-cells", &ret, sizeof(ret)) <= 0)	141	if (ofw_get_property(device, "#size-cells", &ret, sizeof(ret)) <= 0)
134	if (ofw_get_property(ofw_root, "#size-cells", &ret, sizeof(ret)) <= 0)	142	if (ofw_get_property(ofw_root, "#size-cells", &ret, sizeof(ret)) <= 0)
135	ret = OFW_SIZE_CELLS;	143	ret = OFW_SIZE_CELLS;
136		144
137	return ret;	145	return ret;
138	}	146	}
139		147
140		148
141	static ihandle ofw_open(const char *name)	149	static ihandle ofw_open(const char *name)
142	{	150	{
143	return ofw_call("open", 1, 1, NULL, name);	151	return ofw_call("open", 1, 1, NULL, name);
144	}	152	}
145		153
146		154
147	void ofw_write(const char *str, const int len)	155	void ofw_write(const char *str, const int len)
148	{	156	{
149	if (ofw_stdout == 0)	157	if (ofw_stdout == 0)
150	return;	158	return;
151		159
152	ofw_call("write", 3, 1, NULL, ofw_stdout, str, len);	160	ofw_call("write", 3, 1, NULL, ofw_stdout, str, len);
153	}	161	}
154		162
155		163
156	void ofw_translate(const void virt)	164	void ofw_translate(const void virt)
157	{	165	{
158	ofw_arg_t result[4];	166	ofw_arg_t result[4];
159	int shift;	167	int shift;
160		168
161	if (ofw_call("call-method", 3, 5, result, "translate", ofw_mmu, virt) != 0) {	169	if (ofw_call("call-method", 3, 5, result, "translate", ofw_mmu, virt) != 0) {
162	puts("Error: MMU method translate() failed, halting.\n");	170	puts("Error: MMU method translate() failed, halting.\n");
163	halt();	171	halt();
164	}	172	}
165		173
166	if (ofw_translate_failed(result[0]))	174	if (ofw_translate_failed(result[0]))
167	return NULL;	175	return NULL;
168		176
169	if (sizeof(unative_t) == 8)	177	if (sizeof(unative_t) == 8)
170	shift = 32;	178	shift = 32;
171	else	179	else
172	shift = 0;	180	shift = 0;
173		181
174	return (void *) ((result[2]<<shift)\|result[3]);	182	return (void *) ((result[2]<<shift)\|result[3]);
175	}	183	}
176		184
177	void ofw_claim(const void virt, const int len)	185	void ofw_claim(const void virt, const int len)
178	{	186	{
179	ofw_arg_t retaddr;	187	ofw_arg_t retaddr;
180	int shift;	188	int shift;
181		189
182	if (ofw_call("call-method", 5, 2, &retaddr, "claim", ofw_mmu, 0, len, virt) != 0) {	190	if (ofw_call("call-method", 5, 2, &retaddr, "claim", ofw_mmu, 0, len, virt) != 0) {
183	puts("Error: MMU method claim() failed, halting.\n");	191	puts("Error: MMU method claim() failed, halting.\n");
184	halt();	192	halt();
185	}	193	}
186		194
187	return (void *) retaddr;	195	return (void *) retaddr;
188	}	196	}
189		197
190	int ofw_map(const void phys, const void virt, const int size, const int mode)	198	int ofw_map(const void phys, const void virt, const int size, const int mode)
191	{	199	{
192	uintptr_t phys_hi, phys_lo;	200	uintptr_t phys_hi, phys_lo;
193		201
194	if (sizeof(unative_t) == 8) {	202	if (sizeof(unative_t) == 8) {
195	int shift = 32;	203	int shift = 32;
196	phys_hi = (uintptr_t) phys >> shift;	204	phys_hi = (uintptr_t) phys >> shift;
197	phys_lo = (uintptr_t) phys & 0xffffffff;	205	phys_lo = (uintptr_t) phys & 0xffffffff;
198	} else {	206	} else {
199	phys_hi = 0;	207	phys_hi = 0;
200	phys_lo = (uintptr_t) phys;	208	phys_lo = (uintptr_t) phys;
201	}	209	}
202		210
203	return ofw_call("call-method", 7, 1, NULL, "map", ofw_mmu, mode, size, virt,	211	return ofw_call("call-method", 7, 1, NULL, "map", ofw_mmu, mode, size, virt,
204	phys_hi, phys_lo);	212	phys_hi, phys_lo);
205	}	213	}
206		214
207		215
208	int ofw_memmap(memmap_t *map)	216	int ofw_memmap(memmap_t *map)
209	{	217	{
210	unsigned int ac = ofw_get_address_cells(ofw_memory);	218	unsigned int ac = ofw_get_address_cells(ofw_memory);
211	unsigned int sc = ofw_get_size_cells(ofw_memory);	219	unsigned int sc = ofw_get_size_cells(ofw_memory);
212		220
213	uint32_t buf[((ac+sc)*MEMMAP_MAX_RECORDS)];	221	uint32_t buf[((ac+sc)*MEMMAP_MAX_RECORDS)];
214	int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(buf));	222	int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(buf));
215	if (ret <= 0) /* ret is the number of written bytes */	223	if (ret <= 0) /* ret is the number of written bytes */
216	return false;	224	return false;
217		225
218	int pos;	226	int pos;
219	map->total = 0;	227	map->total = 0;
220	map->count = 0;	228	map->count = 0;
221	for (pos = 0; (pos < ret / sizeof(uint32_t)) && (map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {	229	for (pos = 0; (pos < ret / sizeof(uint32_t)) && (map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {
222	void * start = (void *) ((uintptr_t) buf[pos + ac - 1]);	230	void * start = (void *) ((uintptr_t) buf[pos + ac - 1]);
223	unsigned int size = buf[pos + ac + sc - 1];	231	unsigned int size = buf[pos + ac + sc - 1];
224		232
225	if (size > 0) {	233	if (size > 0) {
226	map->zones[map->count].start = start;	234	map->zones[map->count].start = start;
227	map->zones[map->count].size = size;	235	map->zones[map->count].size = size;
228	map->count++;	236	map->count++;
229	map->total += size;	237	map->total += size;
230	}	238	}
231	}	239	}
232		240
233	return true;	241	return true;
234	}	242	}
235		243
236		244
237	int ofw_screen(screen_t *screen)	245	int ofw_screen(screen_t *screen)
238	{	246	{
239	char device_name[BUF_SIZE];	247	char device_name[BUF_SIZE];
240	uint32_t virtaddr;	248	uint32_t virtaddr;
241		249
242	if (ofw_get_property(ofw_aliases, "screen", device_name, sizeof(device_name)) <= 0)	250	if (ofw_get_property(ofw_aliases, "screen", device_name, sizeof(device_name)) <= 0)
243	return false;	251	return false;
244		252
245	phandle device = ofw_find_device(device_name);	253	phandle device = ofw_find_device(device_name);
246	if (device == -1)	254	if (device == -1)
247	return false;	255	return false;
248		256
249	if (ofw_get_property(device, "address", &virtaddr, sizeof(virtaddr)) <= 0)	257	if (ofw_get_property(device, "address", &virtaddr, sizeof(virtaddr)) <= 0)
250	return false;	258	return false;
251		259
252	screen->addr = (void *) ((uintptr_t) virtaddr);	260	screen->addr = (void *) ((uintptr_t) virtaddr);
253		261
254	if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0)	262	if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0)
255	return false;	263	return false;
256		264
257	if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0)	265	if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0)
258	return false;	266	return false;
259		267
260	if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0)	268	if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0)
261	return false;	269	return false;
262		270
263	if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0)	271	if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0)
264	return false;	272	return false;
265		273
266	return true;	274	return true;
267	}	275	}
268		276

Subversion Repositories HelenOS

(root)/trunk/boot/genarch/ofw.c – Rev 1789 → 1790