WebSVN – HelenOS – Diff – /branches/sparc/boot/arch/sparc64/loader/ofwarch.c


/*
 * Copyright (c) 2005 Martin Decky
 * Copyright (c) 2006 Jakub Jermar
 * 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.
 */
 
/**
 * @file
 * @brief   Architecture dependent parts of OpenFirmware interface.
 */
 
#include <ofwarch.h>  
#include <ofw.h>
#include <printf.h>
#include <string.h>
#include <register.h>
#include "main.h"
#include "asm.h"
 
/* these tho variables will be set by the detect_subarchitecture function */
extern uint8_t subarchitecture;
extern uint16_t mid_mask;
 
void write(const char *str, const int len)
{
    int i;
   
    for (i = 0; i < len; i++) {
        if (str[i] == '\n')
            ofw_write("\r", 1);
        ofw_write(&str[i], 1);
    }
}
 
int ofw_translate_failed(ofw_arg_t flag)
{
    return flag != -1;
}
 
/**
 * Starts all CPUs represented by following siblings of the given node,
 * except for the current CPU.
 *
 * @param child     The first child of the OFW tree node whose children
 *          represent CPUs to be woken up.
 * @param current_mid   MID of the current CPU, the current CPU will
 *          (of course) not be woken up.
 * @return      Number of CPUs which have the same parent node as
 *          "child".
 */
static int wake_cpus_in_node(phandle child, uint64_t current_mid)
{
    int cpus;
    char type_name[BUF_SIZE];
   
    for (cpus = 0; child != 0 && child != -1;
        child = ofw_get_peer_node(child), cpus++) {
        if (ofw_get_property(child, "device_type", type_name,
            sizeof(type_name)) > 0) {
            if (strcmp(type_name, "cpu") == 0) {
                uint32_t mid;
               
                /*
                 * "upa-portid" for US, "portid" for US-III,
                 * "cpuid" for US-IV
                 */
                if (ofw_get_property(
                    child, "upa-portid",
                    &mid, sizeof(mid)) <= 0
                    && ofw_get_property(child, "portid",
                    &mid, sizeof(mid)) <= 0
                    && ofw_get_property(child, "cpuid",
                    &mid, sizeof(mid)) <= 0)
                    continue;
                   
                if (current_mid != mid) {
                    /*
                     * Start secondary processor.
                     */
                    (void) ofw_call("SUNW,start-cpu", 3, 1,
                        NULL, child, KERNEL_VIRTUAL_ADDRESS,
                        bootinfo.physmem_start |
                        AP_PROCESSOR);
                }
            }
        }
    }
 
    return cpus;
}
 
/**
 * Finds out the current CPU's MID and wakes up all AP processors.
 */
int ofw_cpu(void)
{
    int cpus;
    phandle node;
    phandle subnode;
    phandle cpus_parent;
    phandle cmp;
    char name[BUF_SIZE];
 
    /* get the current CPU MID */
    uint64_t current_mid;
   
    asm volatile ("ldxa [%1] %2, %0\n"
        : "=r" (current_mid)
        : "r" (0), "i" (ASI_ICBUS_CONFIG));
    current_mid >>= ICBUS_CONFIG_MID_SHIFT;
 
    current_mid &= mid_mask;
 
    /* wake up CPUs */
   
    cpus_parent = ofw_find_device("/ssm@0,0");
    if (cpus_parent == 0 || cpus_parent == -1) {
        cpus_parent = ofw_find_device("/");
    }
 
    node = ofw_get_child_node(cpus_parent);
    cpus = wake_cpus_in_node(node, current_mid);
    while (node != 0 && node != -1) {
        if (ofw_get_property(node, "name", name,
            sizeof(name)) > 0) {
            if (strcmp(name, "cmp") == 0) {
                subnode = ofw_get_child_node(node);
                cpus += wake_cpus_in_node(subnode,
                    current_mid);
            }
        }
        node = ofw_get_peer_node(node);
    }
   
    return cpus;
   
}
 
/** Get physical memory starting address.
 *
 * @param start     Pointer to variable where the physical memory starting
 *          address will be stored.
 *
 * @return      Non-zero on succes, zero on failure.
 */
int ofw_get_physmem_start(uintptr_t *start)
{
    uint32_t memreg[4];
 
    if (ofw_get_property(ofw_memory, "reg", &memreg, sizeof(memreg)) <= 0)
        return 0;
 
    *start = (((uint64_t) memreg[0]) << 32) | memreg[1];
    return 1;
}
 
 

Rev 3664	Rev 3742
1	/*	1	/*
2	* Copyright (c) 2005 Martin Decky	2	* Copyright (c) 2005 Martin Decky
3	* Copyright (c) 2006 Jakub Jermar	3	* Copyright (c) 2006 Jakub Jermar
4	* All rights reserved.	4	* All rights reserved.
5	*	5	*
6	* Redistribution and use in source and binary forms, with or without	6	* Redistribution and use in source and binary forms, with or without
7	* modification, are permitted provided that the following conditions	7	* modification, are permitted provided that the following conditions
8	* are met:	8	* are met:
9	*	9	*
10	* - Redistributions of source code must retain the above copyright	10	* - Redistributions of source code must retain the above copyright
11	* notice, this list of conditions and the following disclaimer.	11	* notice, this list of conditions and the following disclaimer.
12	* - Redistributions in binary form must reproduce the above copyright	12	* - Redistributions in binary form must reproduce the above copyright
13	* notice, this list of conditions and the following disclaimer in the	13	* notice, this list of conditions and the following disclaimer in the
14	* documentation and/or other materials provided with the distribution.	14	* documentation and/or other materials provided with the distribution.
15	* - The name of the author may not be used to endorse or promote products	15	* - The name of the author may not be used to endorse or promote products
16	* derived from this software without specific prior written permission.	16	* derived from this software without specific prior written permission.
17	*	17	*
18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	28	*/
29		29
30	/**	30	/**
31	* @file	31	* @file
32	* @brief Architecture dependent parts of OpenFirmware interface.	32	* @brief Architecture dependent parts of OpenFirmware interface.
33	*/	33	*/
34		34
35	#include <ofwarch.h>	35	#include <ofwarch.h>
36	#include <ofw.h>	36	#include <ofw.h>
37	#include <printf.h>	37	#include <printf.h>
38	#include <string.h>	38	#include <string.h>
39	#include <register.h>	39	#include <register.h>
40	#include "main.h"	40	#include "main.h"
41	#include "asm.h"	41	#include "asm.h"
42		42
43	/* these tho variables will be set by the detect_subarchitecture function */	43	/* these tho variables will be set by the detect_subarchitecture function */
44	extern uint8_t subarchitecture;	44	extern uint8_t subarchitecture;
45	extern uint16_t mid_mask;	45	extern uint16_t mid_mask;
46		46
47	void write(const char *str, const int len)	47	void write(const char *str, const int len)
48	{	48	{
49	int i;	49	int i;
50		50
51	for (i = 0; i < len; i++) {	51	for (i = 0; i < len; i++) {
52	if (str[i] == '\n')	52	if (str[i] == '\n')
53	ofw_write("\r", 1);	53	ofw_write("\r", 1);
54	ofw_write(&str[i], 1);	54	ofw_write(&str[i], 1);
55	}	55	}
56	}	56	}
57		57
58	int ofw_translate_failed(ofw_arg_t flag)	58	int ofw_translate_failed(ofw_arg_t flag)
59	{	59	{
60	return flag != -1;	60	return flag != -1;
61	}	61	}
62		62
63	/**	63	/**
64	* Starts all CPUs represented by following siblings of the given node,	64	* Starts all CPUs represented by following siblings of the given node,
65	* except for the current CPU.	65	* except for the current CPU.
66	*	66	*
67	* @param child the first child of the OFW tree node whose children represent	67	* @param child The first child of the OFW tree node whose children
68	* CPUs to be woken up	68	* represent CPUs to be woken up.
69	* @param current_mid MID of the current CPU, the current CPU will	69	* @param current_mid MID of the current CPU, the current CPU will
70	* (of course) not be woken up	70	* (of course) not be woken up.
71	* @return number of CPUs which have the same parent node as "child"	71	* @return Number of CPUs which have the same parent node as
-		72	* "child".
72	*/	73	*/
73	static int wake_cpus_in_node(phandle child, uint64_t current_mid)	74	static int wake_cpus_in_node(phandle child, uint64_t current_mid)
74	{	75	{
75	int cpus;	76	int cpus;
76	char type_name[BUF_SIZE];	77	char type_name[BUF_SIZE];
77		78
78	for (cpus = 0; child != 0 && child != -1;	79	for (cpus = 0; child != 0 && child != -1;
79	child = ofw_get_peer_node(child), cpus++) {	80	child = ofw_get_peer_node(child), cpus++) {
80	if (ofw_get_property(child, "device_type", type_name,	81	if (ofw_get_property(child, "device_type", type_name,
81	sizeof(type_name)) > 0) {	82	sizeof(type_name)) > 0) {
82	if (strcmp(type_name, "cpu") == 0) {	83	if (strcmp(type_name, "cpu") == 0) {
83	uint32_t mid;	84	uint32_t mid;
84		85
85	/*	86	/*
86	* "upa-portid" for US, "portid" for US-III,	87	* "upa-portid" for US, "portid" for US-III,
87	* "cpuid" for US-IV	88	* "cpuid" for US-IV
88	*/	89	*/
89	if (ofw_get_property(	90	if (ofw_get_property(
90	child, "upa-portid",	91	child, "upa-portid",
91	&mid, sizeof(mid)) <= 0	92	&mid, sizeof(mid)) <= 0
92	&& ofw_get_property(child, "portid",	93	&& ofw_get_property(child, "portid",
93	&mid, sizeof(mid)) <= 0	94	&mid, sizeof(mid)) <= 0
94	&& ofw_get_property(child, "cpuid",	95	&& ofw_get_property(child, "cpuid",
95	&mid, sizeof(mid)) <= 0)	96	&mid, sizeof(mid)) <= 0)
96	continue;	97	continue;
97		98
98	if (current_mid != mid) {	99	if (current_mid != mid) {
99	/*	100	/*
100	* Start secondary processor.	101	* Start secondary processor.
101	*/	102	*/
102	(void) ofw_call("SUNW,start-cpu", 3, 1,	103	(void) ofw_call("SUNW,start-cpu", 3, 1,
103	NULL, child, KERNEL_VIRTUAL_ADDRESS,	104	NULL, child, KERNEL_VIRTUAL_ADDRESS,
104	bootinfo.physmem_start \|	105	bootinfo.physmem_start \|
105	AP_PROCESSOR);	106	AP_PROCESSOR);
106	}	107	}
107	}	108	}
108	}	109	}
109	}	110	}
110		111
111	return cpus;	112	return cpus;
112	}	113	}
113		114
114	/**	115	/**
115	* Finds out the current CPU's MID and wakes up all AP processors.	116	* Finds out the current CPU's MID and wakes up all AP processors.
116	*/	117	*/
117	int ofw_cpu(void)	118	int ofw_cpu(void)
118	{	119	{
119	int cpus;	120	int cpus;
120	phandle node;	121	phandle node;
121	phandle subnode;	122	phandle subnode;
122	phandle cpus_parent;	123	phandle cpus_parent;
123	phandle cmp;	124	phandle cmp;
124	char name[BUF_SIZE];	125	char name[BUF_SIZE];
125		126
126	/* get the current CPU MID */	127	/* get the current CPU MID */
127	uint64_t current_mid;	128	uint64_t current_mid;
128		129
129	asm volatile ("ldxa [%1] %2, %0\n"	130	asm volatile ("ldxa [%1] %2, %0\n"
130	: "=r" (current_mid)	131	: "=r" (current_mid)
131	: "r" (0), "i" (ASI_ICBUS_CONFIG));	132	: "r" (0), "i" (ASI_ICBUS_CONFIG));
132	current_mid >>= ICBUS_CONFIG_MID_SHIFT;	133	current_mid >>= ICBUS_CONFIG_MID_SHIFT;
133		134
134	current_mid &= mid_mask;	135	current_mid &= mid_mask;
135		136
136	/* wake up CPUs */	137	/* wake up CPUs */
137		138
138	cpus_parent = ofw_find_device("/ssm@0,0");	139	cpus_parent = ofw_find_device("/ssm@0,0");
139	if (cpus_parent == 0 \|\| cpus_parent == -1) {	140	if (cpus_parent == 0 \|\| cpus_parent == -1) {
140	cpus_parent = ofw_find_device("/");	141	cpus_parent = ofw_find_device("/");
141	}	142	}
142		143
143	node = ofw_get_child_node(cpus_parent);	144	node = ofw_get_child_node(cpus_parent);
144	cpus = wake_cpus_in_node(node, current_mid);	145	cpus = wake_cpus_in_node(node, current_mid);
145	while (node != 0 && node != -1) {	146	while (node != 0 && node != -1) {
146	if (ofw_get_property(node, "name", name,	147	if (ofw_get_property(node, "name", name,
147	sizeof(name)) > 0) {	148	sizeof(name)) > 0) {
148	if (strcmp(name, "cmp") == 0) {	149	if (strcmp(name, "cmp") == 0) {
149	subnode = ofw_get_child_node(node);	150	subnode = ofw_get_child_node(node);
150	cpus += wake_cpus_in_node(subnode,	151	cpus += wake_cpus_in_node(subnode,
151	current_mid);	152	current_mid);
152	}	153	}
153	}	154	}
154	node = ofw_get_peer_node(node);	155	node = ofw_get_peer_node(node);
155	}	156	}
156		157
157	return cpus;	158	return cpus;
158		159
159	}	160	}
160		161
161	/** Get physical memory starting address.	162	/** Get physical memory starting address.
162	*	163	*
163	* @param start Pointer to variable where the physical memory starting	164	* @param start Pointer to variable where the physical memory starting
164	* address will be stored.	165	* address will be stored.
165	*	166	*
166	* @return Non-zero on succes, zero on failure.	167	* @return Non-zero on succes, zero on failure.
167	*/	168	*/
168	int ofw_get_physmem_start(uintptr_t *start)	169	int ofw_get_physmem_start(uintptr_t *start)
169	{	170	{
170	uint32_t memreg[4];	171	uint32_t memreg[4];
171		172
172	if (ofw_get_property(ofw_memory, "reg", &memreg, sizeof(memreg)) <= 0)	173	if (ofw_get_property(ofw_memory, "reg", &memreg, sizeof(memreg)) <= 0)
173	return 0;	174	return 0;
174		175
175	*start = (((uint64_t) memreg[0]) << 32) \| memreg[1];	176	*start = (((uint64_t) memreg[0]) << 32) \| memreg[1];
176	return 1;	177	return 1;
177	}	178	}
178		179
179		180

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(root)/branches/sparc/boot/arch/sparc64/loader/ofwarch.c – Rev 3664 → 3742