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);
}
 
int ofw_get_proplen(const phandle device, const char *name)
{
    return ofw_call("getproplen", 2, 1, NULL, device, name);
}
 
int ofw_next_property(const phandle device, char *previous, char *buf)
{
    return ofw_call("nextprop", 3, 1, NULL, device, previous, buf);
}
 
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;
}
 
phandle ofw_get_child_node(const phandle node)
{
    return ofw_call("child", 1, 1, NULL, node);
}
 
phandle ofw_get_peer_node(const phandle node)
{
    return ofw_call("peer", 1, 1, NULL, node);
}
 
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 1881	Rev 1893
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.	77	/** Perform a call to OpenFirmware client interface.
78	*	78	*
79	* @param service String identifying the service requested.	79	* @param service String identifying the service requested.
80	* @param nargs Number of input arguments.	80	* @param nargs Number of input arguments.
81	* @param nret Number of output arguments. This includes the return value.	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.	82	* @param rets Buffer for output arguments or NULL. The buffer must accommodate nret - 1 items.
83	*	83	*
84	* @return Return value returned by the client interface.	84	* @return Return value returned by the client interface.
85	*/	85	*/
86	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, ...)
87	{	87	{
88	va_list list;	88	va_list list;
89	ofw_args_t args;	89	ofw_args_t args;
90	int i;	90	int i;
91		91
92	args.service = (ofw_arg_t) service;	92	args.service = (ofw_arg_t) service;
93	args.nargs = nargs;	93	args.nargs = nargs;
94	args.nret = nret;	94	args.nret = nret;
95		95
96	va_start(list, rets);	96	va_start(list, rets);
97	for (i = 0; i < nargs; i++)	97	for (i = 0; i < nargs; i++)
98	args.args[i] = va_arg(list, ofw_arg_t);	98	args.args[i] = va_arg(list, ofw_arg_t);
99	va_end(list);	99	va_end(list);
100		100
101	for (i = 0; i < nret; i++)	101	for (i = 0; i < nret; i++)
102	args.args[i + nargs] = 0;	102	args.args[i + nargs] = 0;
103		103
104	(void) ofw(&args);	104	(void) ofw(&args);
105		105
106	for (i = 1; i < nret; i++)	106	for (i = 1; i < nret; i++)
107	rets[i - 1] = args.args[i + nargs];	107	rets[i - 1] = args.args[i + nargs];
108		108
109	return args.args[nargs];	109	return args.args[nargs];
110	}	110	}
111		111
112		-
113	phandle ofw_find_device(const char *name)	112	phandle ofw_find_device(const char *name)
114	{	113	{
115	return ofw_call("finddevice", 1, 1, NULL, name);	114	return ofw_call("finddevice", 1, 1, NULL, name);
116	}	115	}
117		116
118		-
119	int ofw_get_property(const phandle device, const char name, const void buf, const int buflen)	117	int ofw_get_property(const phandle device, const char name, const void buf, const int buflen)
120	{	118	{
121	return ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen);	119	return ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen);
122	}	120	}
123		121
-		122	int ofw_get_proplen(const phandle device, const char *name)
-		123	{
-		124	return ofw_call("getproplen", 2, 1, NULL, device, name);
-		125	}
-		126
-		127	int ofw_next_property(const phandle device, char previous, char buf)
-		128	{
-		129	return ofw_call("nextprop", 3, 1, NULL, device, previous, buf);
-		130	}
124		131
125	unsigned int ofw_get_address_cells(const phandle device)	132	unsigned int ofw_get_address_cells(const phandle device)
126	{	133	{
127	unsigned int ret = 1;	134	unsigned int ret = 1;
128		135
129	if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0)	136	if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0)
130	if (ofw_get_property(ofw_root, "#address-cells", &ret, sizeof(ret)) <= 0)	137	if (ofw_get_property(ofw_root, "#address-cells", &ret, sizeof(ret)) <= 0)
131	ret = OFW_ADDRESS_CELLS;	138	ret = OFW_ADDRESS_CELLS;
132		139
133	return ret;	140	return ret;
134	}	141	}
135		142
136		143
137	unsigned int ofw_get_size_cells(const phandle device)	144	unsigned int ofw_get_size_cells(const phandle device)
138	{	145	{
139	unsigned int ret;	146	unsigned int ret;
140		147
141	if (ofw_get_property(device, "#size-cells", &ret, sizeof(ret)) <= 0)	148	if (ofw_get_property(device, "#size-cells", &ret, sizeof(ret)) <= 0)
142	if (ofw_get_property(ofw_root, "#size-cells", &ret, sizeof(ret)) <= 0)	149	if (ofw_get_property(ofw_root, "#size-cells", &ret, sizeof(ret)) <= 0)
143	ret = OFW_SIZE_CELLS;	150	ret = OFW_SIZE_CELLS;
144		151
145	return ret;	152	return ret;
146	}	153	}
147		154
148	phandle ofw_get_child_node(const phandle node)	155	phandle ofw_get_child_node(const phandle node)
149	{	156	{
150	return ofw_call("child", 1, 1, NULL, node);	157	return ofw_call("child", 1, 1, NULL, node);
151	}	158	}
152		159
153	phandle ofw_get_peer_node(const phandle node)	160	phandle ofw_get_peer_node(const phandle node)
154	{	161	{
155	return ofw_call("peer", 1, 1, NULL, node);	162	return ofw_call("peer", 1, 1, NULL, node);
156	}	163	}
157		164
158	static ihandle ofw_open(const char *name)	165	static ihandle ofw_open(const char *name)
159	{	166	{
160	return ofw_call("open", 1, 1, NULL, name);	167	return ofw_call("open", 1, 1, NULL, name);
161	}	168	}
162		169
163		170
164	void ofw_write(const char *str, const int len)	171	void ofw_write(const char *str, const int len)
165	{	172	{
166	if (ofw_stdout == 0)	173	if (ofw_stdout == 0)
167	return;	174	return;
168		175
169	ofw_call("write", 3, 1, NULL, ofw_stdout, str, len);	176	ofw_call("write", 3, 1, NULL, ofw_stdout, str, len);
170	}	177	}
171		178
172		179
173	void ofw_translate(const void virt)	180	void ofw_translate(const void virt)
174	{	181	{
175	ofw_arg_t result[4];	182	ofw_arg_t result[4];
176	int shift;	183	int shift;
177		184
178	if (ofw_call("call-method", 3, 5, result, "translate", ofw_mmu, virt) != 0) {	185	if (ofw_call("call-method", 3, 5, result, "translate", ofw_mmu, virt) != 0) {
179	puts("Error: MMU method translate() failed, halting.\n");	186	puts("Error: MMU method translate() failed, halting.\n");
180	halt();	187	halt();
181	}	188	}
182		189
183	if (ofw_translate_failed(result[0]))	190	if (ofw_translate_failed(result[0]))
184	return NULL;	191	return NULL;
185		192
186	if (sizeof(unative_t) == 8)	193	if (sizeof(unative_t) == 8)
187	shift = 32;	194	shift = 32;
188	else	195	else
189	shift = 0;	196	shift = 0;
190		197
191	return (void *) ((result[2]<<shift)\|result[3]);	198	return (void *) ((result[2]<<shift)\|result[3]);
192	}	199	}
193		200
194	void ofw_claim(const void virt, const int len)	201	void ofw_claim(const void virt, const int len)
195	{	202	{
196	ofw_arg_t retaddr;	203	ofw_arg_t retaddr;
197	int shift;	204	int shift;
198		205
199	if (ofw_call("call-method", 5, 2, &retaddr, "claim", ofw_mmu, 0, len, virt) != 0) {	206	if (ofw_call("call-method", 5, 2, &retaddr, "claim", ofw_mmu, 0, len, virt) != 0) {
200	puts("Error: MMU method claim() failed, halting.\n");	207	puts("Error: MMU method claim() failed, halting.\n");
201	halt();	208	halt();
202	}	209	}
203		210
204	return (void *) retaddr;	211	return (void *) retaddr;
205	}	212	}
206		213
207	int ofw_map(const void phys, const void virt, const int size, const int mode)	214	int ofw_map(const void phys, const void virt, const int size, const int mode)
208	{	215	{
209	uintptr_t phys_hi, phys_lo;	216	uintptr_t phys_hi, phys_lo;
210		217
211	if (sizeof(unative_t) == 8) {	218	if (sizeof(unative_t) == 8) {
212	int shift = 32;	219	int shift = 32;
213	phys_hi = (uintptr_t) phys >> shift;	220	phys_hi = (uintptr_t) phys >> shift;
214	phys_lo = (uintptr_t) phys & 0xffffffff;	221	phys_lo = (uintptr_t) phys & 0xffffffff;
215	} else {	222	} else {
216	phys_hi = 0;	223	phys_hi = 0;
217	phys_lo = (uintptr_t) phys;	224	phys_lo = (uintptr_t) phys;
218	}	225	}
219		226
220	return ofw_call("call-method", 7, 1, NULL, "map", ofw_mmu, mode, size, virt,	227	return ofw_call("call-method", 7, 1, NULL, "map", ofw_mmu, mode, size, virt,
221	phys_hi, phys_lo);	228	phys_hi, phys_lo);
222	}	229	}
223		230
224		231
225	int ofw_memmap(memmap_t *map)	232	int ofw_memmap(memmap_t *map)
226	{	233	{
227	unsigned int ac = ofw_get_address_cells(ofw_memory);	234	unsigned int ac = ofw_get_address_cells(ofw_memory);
228	unsigned int sc = ofw_get_size_cells(ofw_memory);	235	unsigned int sc = ofw_get_size_cells(ofw_memory);
229		236
230	uint32_t buf[((ac+sc)*MEMMAP_MAX_RECORDS)];	237	uint32_t buf[((ac+sc)*MEMMAP_MAX_RECORDS)];
231	int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(buf));	238	int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(buf));
232	if (ret <= 0) /* ret is the number of written bytes */	239	if (ret <= 0) /* ret is the number of written bytes */
233	return false;	240	return false;
234		241
235	int pos;	242	int pos;
236	map->total = 0;	243	map->total = 0;
237	map->count = 0;	244	map->count = 0;
238	for (pos = 0; (pos < ret / sizeof(uint32_t)) && (map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {	245	for (pos = 0; (pos < ret / sizeof(uint32_t)) && (map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {
239	void * start = (void *) ((uintptr_t) buf[pos + ac - 1]);	246	void * start = (void *) ((uintptr_t) buf[pos + ac - 1]);
240	unsigned int size = buf[pos + ac + sc - 1];	247	unsigned int size = buf[pos + ac + sc - 1];
241		248
242	if (size > 0) {	249	if (size > 0) {
243	map->zones[map->count].start = start;	250	map->zones[map->count].start = start;
244	map->zones[map->count].size = size;	251	map->zones[map->count].size = size;
245	map->count++;	252	map->count++;
246	map->total += size;	253	map->total += size;
247	}	254	}
248	}	255	}
249		256
250	return true;	257	return true;
251	}	258	}
252		259
253		260
254	int ofw_screen(screen_t *screen)	261	int ofw_screen(screen_t *screen)
255	{	262	{
256	char device_name[BUF_SIZE];	263	char device_name[BUF_SIZE];
257	uint32_t virtaddr;	264	uint32_t virtaddr;
258		265
259	if (ofw_get_property(ofw_aliases, "screen", device_name, sizeof(device_name)) <= 0)	266	if (ofw_get_property(ofw_aliases, "screen", device_name, sizeof(device_name)) <= 0)
260	return false;	267	return false;
261		268
262	phandle device = ofw_find_device(device_name);	269	phandle device = ofw_find_device(device_name);
263	if (device == -1)	270	if (device == -1)
264	return false;	271	return false;
265		272
266	if (ofw_get_property(device, "address", &virtaddr, sizeof(virtaddr)) <= 0)	273	if (ofw_get_property(device, "address", &virtaddr, sizeof(virtaddr)) <= 0)
267	return false;	274	return false;
268		275
269	screen->addr = (void *) ((uintptr_t) virtaddr);	276	screen->addr = (void *) ((uintptr_t) virtaddr);
270		277
271	if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0)	278	if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0)
272	return false;	279	return false;
273		280
274	if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0)	281	if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0)
275	return false;	282	return false;
276		283
277	if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0)	284	if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0)
278	return false;	285	return false;
279		286
280	if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0)	287	if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0)
281	return false;	288	return false;
282		289
283	return true;	290	return true;
284	}	291	}
285		292

Subversion Repositories HelenOS

(root)/trunk/boot/genarch/ofw.c – Rev 1881 → 1893