WebSVN – HelenOS – Diff – /branches/sparc/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;
ihandle ofw_memory_prop;
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();
    }
    if (ofw_get_property(ofw_chosen, "memory", &ofw_memory_prop, sizeof(ofw_memory_prop)) <= 0) {
        puts("\r\nError: Unable to get memory 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.
 */
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, 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);
}
 
int ofw_package_to_path(const phandle device, char *buf, const int buflen)
{
    return ofw_call("package-to-path", 3, 1, NULL, device, 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;
}
 
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_virt(const void *virt, const int len)
{
    ofw_arg_t retaddr;
 
    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;
}
 
void *ofw_claim_phys(const void *phys, const int len)
{
    ofw_arg_t retaddr[2];
    int shift;
 
    if (sizeof(unative_t) == 8) {
        shift = 32;
        if (ofw_call("call-method", 6, 3, retaddr, "claim",
            ofw_memory_prop, 0, len, ((uintptr_t) phys) >> shift,
            ((uintptr_t) phys) & ((uint32_t) -1)) != 0) {
            /*
             * Note that this will help us to discover
             * conflicts between OpenFirmware allocations
             * and our use of physical memory.
             * It is better to detect collisions here
             * than to cope with weird errors later.
             *
             * So this is really not to make the loader
             * more generic; it is here for debugging
             * purposes.
             */
            puts("Error: memory method claim() failed, halting.\n");
            halt();
        }
    } else {
        shift = 0;
        /*
         * FIXME: the number of arguments is probably different...
         */
        puts("Error: 32-bit ofw_claim_phys not implemented.\n");
        halt();
    }
 
    return (void *) ((retaddr[0] << shift) | retaddr[1]);
}
 
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);
}
 
/** Save OpenFirmware physical memory map.
 *
 * @param map Memory map structure where the map will be saved.
 *
 * @return Zero on failure, non-zero on success.
 */
int ofw_memmap(memmap_t *map)
{
    unsigned int ac = ofw_get_address_cells(ofw_memory) /
        (sizeof(uintptr_t) / sizeof(uint32_t));
    unsigned int sc = ofw_get_size_cells(ofw_memory) /
        (sizeof(uintptr_t) / sizeof(uint32_t));
    printf("address cells: %d, size cells: %d. ", ac, sc);
 
    uintptr_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(uintptr_t)) &&
        (map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {
        void *start = (void *) (buf[pos + ac - 1]);
        unsigned int size = buf[pos + ac + sc - 1];
 
        /*
         * This is a hot fix of the issue which occurs on machines
         * where there are holes in the physical memory (such as
         * SunBlade 1500). Should we detect a hole in the physical
         * memory, we will ignore any memory detected behind
         * the hole and pretend the hole does not exist.
         */
        if ((map->count > 0) &&
            (map->zones[map->count - 1].start + map->zones[map->count - 1].size
                < start))
            break;
 
        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;
}
 
 
void ofw_quiesce(void)
{
    ofw_call("quiesce", 0, 0, NULL);
}
 

Rev 3607	Rev 3618
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	ihandle ofw_memory_prop;	41	ihandle ofw_memory_prop;
42	phandle ofw_memory;	42	phandle ofw_memory;
43	phandle ofw_aliases;	43	phandle ofw_aliases;
44		44
45	void ofw_init(void)	45	void ofw_init(void)
46	{	46	{
47	ofw_chosen = ofw_find_device("/chosen");	47	ofw_chosen = ofw_find_device("/chosen");
48	if (ofw_chosen == -1)	48	if (ofw_chosen == -1)
49	halt();	49	halt();
50		50
51	if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0)	51	if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0)
52	ofw_stdout = 0;	52	ofw_stdout = 0;
53		53
54	ofw_root = ofw_find_device("/");	54	ofw_root = ofw_find_device("/");
55	if (ofw_root == -1) {	55	if (ofw_root == -1) {
56	puts("\r\nError: Unable to find / device, halted.\r\n");	56	puts("\r\nError: Unable to find / device, halted.\r\n");
57	halt();	57	halt();
58	}	58	}
59		59
60	if (ofw_get_property(ofw_chosen, "mmu", &ofw_mmu, sizeof(ofw_mmu)) <= 0) {	60	if (ofw_get_property(ofw_chosen, "mmu", &ofw_mmu, sizeof(ofw_mmu)) <= 0) {
61	puts("\r\nError: Unable to get mmu property, halted.\r\n");	61	puts("\r\nError: Unable to get mmu property, halted.\r\n");
62	halt();	62	halt();
63	}	63	}
64	if (ofw_get_property(ofw_chosen, "memory", &ofw_memory_prop, sizeof(ofw_memory_prop)) <= 0) {	64	if (ofw_get_property(ofw_chosen, "memory", &ofw_memory_prop, sizeof(ofw_memory_prop)) <= 0) {
65	puts("\r\nError: Unable to get memory property, halted.\r\n");	65	puts("\r\nError: Unable to get memory property, halted.\r\n");
66	halt();	66	halt();
67	}	67	}
68		68
69	ofw_memory = ofw_find_device("/memory");	69	ofw_memory = ofw_find_device("/memory");
70	if (ofw_memory == -1) {	70	if (ofw_memory == -1) {
71	puts("\r\nError: Unable to find /memory device, halted.\r\n");	71	puts("\r\nError: Unable to find /memory device, halted.\r\n");
72	halt();	72	halt();
73	}	73	}
74		74
75	ofw_aliases = ofw_find_device("/aliases");	75	ofw_aliases = ofw_find_device("/aliases");
76	if (ofw_aliases == -1) {	76	if (ofw_aliases == -1) {
77	puts("\r\nError: Unable to find /aliases device, halted.\r\n");	77	puts("\r\nError: Unable to find /aliases device, halted.\r\n");
78	halt();	78	halt();
79	}	79	}
80	}	80	}
81		81
82	/** Perform a call to OpenFirmware client interface.	82	/** Perform a call to OpenFirmware client interface.
83	*	83	*
84	* @param service String identifying the service requested.	84	* @param service String identifying the service requested.
85	* @param nargs Number of input arguments.	85	* @param nargs Number of input arguments.
86	* @param nret Number of output arguments. This includes the return value.	86	* @param nret Number of output arguments. This includes the return value.
87	* @param rets Buffer for output arguments or NULL. The buffer must accommodate nret - 1 items.	87	* @param rets Buffer for output arguments or NULL. The buffer must accommodate nret - 1 items.
88	*	88	*
89	* @return Return value returned by the client interface.	89	* @return Return value returned by the client interface.
90	*/	90	*/
91	unsigned long ofw_call(const char service, const int nargs, const int nret, ofw_arg_t rets, ...)	91	unsigned long ofw_call(const char service, const int nargs, const int nret, ofw_arg_t rets, ...)
92	{	92	{
93	va_list list;	93	va_list list;
94	ofw_args_t args;	94	ofw_args_t args;
95	int i;	95	int i;
96		96
97	args.service = (ofw_arg_t) service;	97	args.service = (ofw_arg_t) service;
98	args.nargs = nargs;	98	args.nargs = nargs;
99	args.nret = nret;	99	args.nret = nret;
100		100
101	va_start(list, rets);	101	va_start(list, rets);
102	for (i = 0; i < nargs; i++)	102	for (i = 0; i < nargs; i++)
103	args.args[i] = va_arg(list, ofw_arg_t);	103	args.args[i] = va_arg(list, ofw_arg_t);
104	va_end(list);	104	va_end(list);
105		105
106	for (i = 0; i < nret; i++)	106	for (i = 0; i < nret; i++)
107	args.args[i + nargs] = 0;	107	args.args[i + nargs] = 0;
108		108
109	(void) ofw(&args);	109	(void) ofw(&args);
110		110
111	for (i = 1; i < nret; i++)	111	for (i = 1; i < nret; i++)
112	rets[i - 1] = args.args[i + nargs];	112	rets[i - 1] = args.args[i + nargs];
113		113
114	return args.args[nargs];	114	return args.args[nargs];
115	}	115	}
116		116
117	phandle ofw_find_device(const char *name)	117	phandle ofw_find_device(const char *name)
118	{	118	{
119	return ofw_call("finddevice", 1, 1, NULL, name);	119	return ofw_call("finddevice", 1, 1, NULL, name);
120	}	120	}
121		121
122	int ofw_get_property(const phandle device, const char name, void buf, const int buflen)	122	int ofw_get_property(const phandle device, const char name, void buf, const int buflen)
123	{	123	{
124	return ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen);	124	return ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen);
125	}	125	}
126		126
127	int ofw_get_proplen(const phandle device, const char *name)	127	int ofw_get_proplen(const phandle device, const char *name)
128	{	128	{
129	return ofw_call("getproplen", 2, 1, NULL, device, name);	129	return ofw_call("getproplen", 2, 1, NULL, device, name);
130	}	130	}
131		131
132	int ofw_next_property(const phandle device, char previous, char buf)	132	int ofw_next_property(const phandle device, char previous, char buf)
133	{	133	{
134	return ofw_call("nextprop", 3, 1, NULL, device, previous, buf);	134	return ofw_call("nextprop", 3, 1, NULL, device, previous, buf);
135	}	135	}
136		136
137	int ofw_package_to_path(const phandle device, char *buf, const int buflen)	137	int ofw_package_to_path(const phandle device, char *buf, const int buflen)
138	{	138	{
139	return ofw_call("package-to-path", 3, 1, NULL, device, buf, buflen);	139	return ofw_call("package-to-path", 3, 1, NULL, device, buf, buflen);
140	}	140	}
141		141
142	unsigned int ofw_get_address_cells(const phandle device)	142	unsigned int ofw_get_address_cells(const phandle device)
143	{	143	{
144	unsigned int ret = 1;	144	unsigned int ret = 1;
145		145
146	if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0)	146	if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0)
147	if (ofw_get_property(ofw_root, "#address-cells", &ret, sizeof(ret)) <= 0)	147	if (ofw_get_property(ofw_root, "#address-cells", &ret, sizeof(ret)) <= 0)
148	ret = OFW_ADDRESS_CELLS;	148	ret = OFW_ADDRESS_CELLS;
149		149
150	return ret;	150	return ret;
151	}	151	}
152		152
153		153
154	unsigned int ofw_get_size_cells(const phandle device)	154	unsigned int ofw_get_size_cells(const phandle device)
155	{	155	{
156	unsigned int ret;	156	unsigned int ret;
157		157
158	if (ofw_get_property(device, "#size-cells", &ret, sizeof(ret)) <= 0)	158	if (ofw_get_property(device, "#size-cells", &ret, sizeof(ret)) <= 0)
159	if (ofw_get_property(ofw_root, "#size-cells", &ret, sizeof(ret)) <= 0)	159	if (ofw_get_property(ofw_root, "#size-cells", &ret, sizeof(ret)) <= 0)
160	ret = OFW_SIZE_CELLS;	160	ret = OFW_SIZE_CELLS;
161		161
162	return ret;	162	return ret;
163	}	163	}
164		164
165	phandle ofw_get_child_node(const phandle node)	165	phandle ofw_get_child_node(const phandle node)
166	{	166	{
167	return ofw_call("child", 1, 1, NULL, node);	167	return ofw_call("child", 1, 1, NULL, node);
168	}	168	}
169		169
170	phandle ofw_get_peer_node(const phandle node)	170	phandle ofw_get_peer_node(const phandle node)
171	{	171	{
172	return ofw_call("peer", 1, 1, NULL, node);	172	return ofw_call("peer", 1, 1, NULL, node);
173	}	173	}
174		174
175	static ihandle ofw_open(const char *name)	175	static ihandle ofw_open(const char *name)
176	{	176	{
177	return ofw_call("open", 1, 1, NULL, name);	177	return ofw_call("open", 1, 1, NULL, name);
178	}	178	}
179		179
180		180
181	void ofw_write(const char *str, const int len)	181	void ofw_write(const char *str, const int len)
182	{	182	{
183	if (ofw_stdout == 0)	183	if (ofw_stdout == 0)
184	return;	184	return;
185		185
186	ofw_call("write", 3, 1, NULL, ofw_stdout, str, len);	186	ofw_call("write", 3, 1, NULL, ofw_stdout, str, len);
187	}	187	}
188		188
189		189
190	void ofw_translate(const void virt)	190	void ofw_translate(const void virt)
191	{	191	{
192	ofw_arg_t result[4];	192	ofw_arg_t result[4];
193	int shift;	193	int shift;
194		194
195	if (ofw_call("call-method", 3, 5, result, "translate", ofw_mmu, virt) != 0) {	195	if (ofw_call("call-method", 3, 5, result, "translate", ofw_mmu, virt) != 0) {
196	puts("Error: MMU method translate() failed, halting.\n");	196	puts("Error: MMU method translate() failed, halting.\n");
197	halt();	197	halt();
198	}	198	}
199		199
200	if (ofw_translate_failed(result[0]))	200	if (ofw_translate_failed(result[0]))
201	return NULL;	201	return NULL;
202		202
203	if (sizeof(unative_t) == 8)	203	if (sizeof(unative_t) == 8)
204	shift = 32;	204	shift = 32;
205	else	205	else
206	shift = 0;	206	shift = 0;
207		207
208	return (void *) ((result[2] << shift) \| result[3]);	208	return (void *) ((result[2] << shift) \| result[3]);
209	}	209	}
210		210
211	void ofw_claim_virt(const void virt, const int len)	211	void ofw_claim_virt(const void virt, const int len)
212	{	212	{
213	ofw_arg_t retaddr;	213	ofw_arg_t retaddr;
214		214
215	if (ofw_call("call-method", 5, 2, &retaddr, "claim", ofw_mmu, 0, len, virt) != 0) {	215	if (ofw_call("call-method", 5, 2, &retaddr, "claim", ofw_mmu, 0, len, virt) != 0) {
216	puts("Error: MMU method claim() failed, halting.\n");	216	puts("Error: MMU method claim() failed, halting.\n");
217	halt();	217	halt();
218	}	218	}
219		219
220	return (void *) retaddr;	220	return (void *) retaddr;
221	}	221	}
222		222
223	void ofw_claim_phys(const void phys, const int len)	223	void ofw_claim_phys(const void phys, const int len)
224	{	224	{
225	ofw_arg_t retaddr[2];	225	ofw_arg_t retaddr[2];
226	int shift;	226	int shift;
227		227
228	if (sizeof(unative_t) == 8) {	228	if (sizeof(unative_t) == 8) {
229	shift = 32;	229	shift = 32;
230	if (ofw_call("call-method", 6, 3, retaddr, "claim",	230	if (ofw_call("call-method", 6, 3, retaddr, "claim",
231	ofw_memory_prop, 0, len, ((uintptr_t) phys) >> shift,	231	ofw_memory_prop, 0, len, ((uintptr_t) phys) >> shift,
232	((uintptr_t) phys) & ((uint32_t) -1)) != 0) {	232	((uintptr_t) phys) & ((uint32_t) -1)) != 0) {
233	/*	233	/*
234	* Note that this will help us to discover	234	* Note that this will help us to discover
235	* conflicts between OpenFirmware allocations	235	* conflicts between OpenFirmware allocations
236	* and our use of physical memory.	236	* and our use of physical memory.
237	* It is better to detect collisions here	237	* It is better to detect collisions here
238	* than to cope with weird errors later.	238	* than to cope with weird errors later.
239	*	239	*
240	* So this is really not to make the loader	240	* So this is really not to make the loader
241	* more generic; it is here for debugging	241	* more generic; it is here for debugging
242	* purposes.	242	* purposes.
243	*/	243	*/
244	puts("Error: memory method claim() failed, halting.\n");	244	puts("Error: memory method claim() failed, halting.\n");
245	halt();	245	halt();
246	}	246	}
247	} else {	247	} else {
248	shift = 0;	248	shift = 0;
249	/*	249	/*
250	* FIXME: the number of arguments is probably different...	250	* FIXME: the number of arguments is probably different...
251	*/	251	*/
252	puts("Error: 32-bit ofw_claim_phys not implemented.\n");	252	puts("Error: 32-bit ofw_claim_phys not implemented.\n");
253	halt();	253	halt();
254	}	254	}
255		255
256	return (void *) ((retaddr[0] << shift) \| retaddr[1]);	256	return (void *) ((retaddr[0] << shift) \| retaddr[1]);
257	}	257	}
258		258
259	int ofw_map(const void phys, const void virt, const int size, const int mode)	259	int ofw_map(const void phys, const void virt, const int size, const int mode)
260	{	260	{
261	uintptr_t phys_hi, phys_lo;	261	uintptr_t phys_hi, phys_lo;
262		262
263	if (sizeof(unative_t) == 8) {	263	if (sizeof(unative_t) == 8) {
264	int shift = 32;	264	int shift = 32;
265	phys_hi = (uintptr_t) phys >> shift;	265	phys_hi = (uintptr_t) phys >> shift;
266	phys_lo = (uintptr_t) phys & 0xffffffff;	266	phys_lo = (uintptr_t) phys & 0xffffffff;
267	} else {	267	} else {
268	phys_hi = 0;	268	phys_hi = 0;
269	phys_lo = (uintptr_t) phys;	269	phys_lo = (uintptr_t) phys;
270	}	270	}
271		271
272	return ofw_call("call-method", 7, 1, NULL, "map", ofw_mmu, mode, size, virt,	272	return ofw_call("call-method", 7, 1, NULL, "map", ofw_mmu, mode, size, virt,
273	phys_hi, phys_lo);	273	phys_hi, phys_lo);
274	}	274	}
275		275
276	/** Save OpenFirmware physical memory map.	276	/** Save OpenFirmware physical memory map.
277	*	277	*
278	* @param map Memory map structure where the map will be saved.	278	* @param map Memory map structure where the map will be saved.
279	*	279	*
280	* @return Zero on failure, non-zero on success.	280	* @return Zero on failure, non-zero on success.
281	*/	281	*/
282	int ofw_memmap(memmap_t *map)	282	int ofw_memmap(memmap_t *map)
283	{	283	{
284	unsigned int ac = ofw_get_address_cells(ofw_memory) /	284	unsigned int ac = ofw_get_address_cells(ofw_memory) /
285	(sizeof(uintptr_t) / sizeof(uint32_t));	285	(sizeof(uintptr_t) / sizeof(uint32_t));
286	unsigned int sc = ofw_get_size_cells(ofw_memory) /	286	unsigned int sc = ofw_get_size_cells(ofw_memory) /
287	(sizeof(uintptr_t) / sizeof(uint32_t));	287	(sizeof(uintptr_t) / sizeof(uint32_t));
288	printf("address cells: %d, size cells: %d. ", ac, sc);	288	printf("address cells: %d, size cells: %d. ", ac, sc);
289		289
290	uintptr_t buf[((ac + sc) * MEMMAP_MAX_RECORDS)];	290	uintptr_t buf[((ac + sc) * MEMMAP_MAX_RECORDS)];
291	int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(buf));	291	int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(buf));
292	if (ret <= 0) /* ret is the number of written bytes */	292	if (ret <= 0) /* ret is the number of written bytes */
293	return false;	293	return false;
294		294
295	int pos;	295	int pos;
296	map->total = 0;	296	map->total = 0;
297	map->count = 0;	297	map->count = 0;
298	for (pos = 0; (pos < ret / sizeof(uintptr_t)) &&	298	for (pos = 0; (pos < ret / sizeof(uintptr_t)) &&
299	(map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {	299	(map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {
300	void start = (void ) (buf[pos + ac - 1]);	300	void start = (void ) (buf[pos + ac - 1]);
301	unsigned int size = buf[pos + ac + sc - 1];	301	unsigned int size = buf[pos + ac + sc - 1];
302		302
303	/*	303	/*
304	* This is a hot fix of the issue which occurs on machines where there are	304	* This is a hot fix of the issue which occurs on machines
305	* holes in the physical memory (such as SunBlade 1500). Should we detect a	305	* where there are holes in the physical memory (such as
-		306	* SunBlade 1500). Should we detect a hole in the physical
306	* hole in the physical memory, we will ignore any memory detected behind	307	* memory, we will ignore any memory detected behind
307	* the hole and pretend the hole does not exist.	308	* the hole and pretend the hole does not exist.
308	*/	309	*/
309	if ((map->count > 0) &&	310	if ((map->count > 0) &&
310	(map->zones[map->count - 1].start + map->zones[map->count - 1].size	311	(map->zones[map->count - 1].start + map->zones[map->count - 1].size
311	< start))	312	< start))
312	break;	313	break;
313		314
314	if (size > 0) {	315	if (size > 0) {
315	map->zones[map->count].start = start;	316	map->zones[map->count].start = start;
316	map->zones[map->count].size = size;	317	map->zones[map->count].size = size;
317	map->count++;	318	map->count++;
318	map->total += size;	319	map->total += size;
319	}	320	}
320	}	321	}
321		322
322	return true;	323	return true;
323	}	324	}
324		325
325	int ofw_screen(screen_t *screen)	326	int ofw_screen(screen_t *screen)
326	{	327	{
327	char device_name[BUF_SIZE];	328	char device_name[BUF_SIZE];
328	uint32_t virtaddr;	329	uint32_t virtaddr;
329		330
330	if (ofw_get_property(ofw_aliases, "screen", device_name, sizeof(device_name)) <= 0)	331	if (ofw_get_property(ofw_aliases, "screen", device_name, sizeof(device_name)) <= 0)
331	return false;	332	return false;
332		333
333	phandle device = ofw_find_device(device_name);	334	phandle device = ofw_find_device(device_name);
334	if (device == -1)	335	if (device == -1)
335	return false;	336	return false;
336		337
337	if (ofw_get_property(device, "address", &virtaddr, sizeof(virtaddr)) <= 0)	338	if (ofw_get_property(device, "address", &virtaddr, sizeof(virtaddr)) <= 0)
338	return false;	339	return false;
339		340
340	screen->addr = (void *) ((uintptr_t) virtaddr);	341	screen->addr = (void *) ((uintptr_t) virtaddr);
341		342
342	if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0)	343	if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0)
343	return false;	344	return false;
344		345
345	if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0)	346	if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0)
346	return false;	347	return false;
347		348
348	if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0)	349	if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0)
349	return false;	350	return false;
350		351
351	if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0)	352	if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0)
352	return false;	353	return false;
353		354
354	return true;	355	return true;
355	}	356	}
356		357
357		358
358	void ofw_quiesce(void)	359	void ofw_quiesce(void)
359	{	360	{
360	ofw_call("quiesce", 0, 0, NULL);	361	ofw_call("quiesce", 0, 0, NULL);
361	}	362	}
362		363

Subversion Repositories HelenOS

(root)/branches/sparc/boot/genarch/ofw.c – Rev 3607 → 3618