Subversion Repositories HelenOS

Rev

Rev 3771 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
3771 rimsky 1
/*
2
 * Copyright (c) 2005 Jakub Jermar
3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
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
15
 *   derived from this software without specific prior written permission.
16
 *
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
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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
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
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
29
/** @addtogroup sparc64
30
 * @{
31
 */
32
/** @file
33
 */
34
 
35
#include <arch/cpu_family.h>
36
#include <cpu.h>
37
#include <arch.h>
38
#include <genarch/ofw/ofw_tree.h>
39
#include <arch/drivers/tick.h>
40
#include <print.h>
41
#include <arch/cpu_node.h>
3862 rimsky 42
#include <arch/cpu.h>
3771 rimsky 43
 
44
/**
45
 * Finds out the clock frequency of the current CPU.
46
 *
47
 * @param node  node representing the current CPU in the OFW tree
48
 * @return  clock frequency if "node" is the current CPU and no error
49
 *      occurs, -1 if "node" is not the current CPU or on error
50
 */
51
static int find_cpu_frequency(ofw_tree_node_t *node)
52
{
53
    ofw_tree_property_t *prop;
54
    uint32_t mid;
55
 
56
    /* 'upa-portid' for US, 'portid' for US-III, 'cpuid' for US-IV */
57
    prop = ofw_tree_getprop(node, "upa-portid");
58
    if ((!prop) || (!prop->value))
59
        prop = ofw_tree_getprop(node, "portid");
60
    if ((!prop) || (!prop->value))
61
        prop = ofw_tree_getprop(node, "cpuid");
62
 
63
    if (prop && prop->value) {
64
        mid = *((uint32_t *) prop->value);
65
        if (mid == CPU->arch.mid) {
66
            prop = ofw_tree_getprop(node, "clock-frequency");
67
            if (prop && prop->value) {
68
                return *((uint32_t *) prop->value);
69
            }
70
        }
71
    }
72
 
73
    return -1;
74
}
75
 
76
/** Perform sparc64 specific initialization of the processor structure for the
77
 * current processor.
78
 */
79
void cpu_arch_init(void)
80
{
81
    ofw_tree_node_t *node;
82
    uint32_t clock_frequency = 0;
83
 
84
    CPU->arch.mid = read_mid();
85
 
86
    /*
87
     * Detect processor frequency.
88
     */
89
    if (is_us() || is_us_iii()) {
90
        node = ofw_tree_find_child_by_device_type(cpus_parent(), "cpu");
91
        while (node) {
92
            int f = find_cpu_frequency(node);
93
            if (f != -1)
94
                clock_frequency = (uint32_t) f;
95
            node = ofw_tree_find_peer_by_device_type(node, "cpu");
96
        }
97
    } else if (is_us_iv()) {
98
        node = ofw_tree_find_child(cpus_parent(), "cmp");
99
        while (node) {
100
            int f;
101
            f = find_cpu_frequency(
102
                ofw_tree_find_child(node, "cpu@0"));
103
            if (f != -1)
104
                clock_frequency = (uint32_t) f;
105
            f = find_cpu_frequency(
106
                ofw_tree_find_child(node, "cpu@1"));
107
            if (f != -1)
108
                clock_frequency = (uint32_t) f;
109
            node = ofw_tree_find_peer_by_name(node, "cmp");
110
        }
111
    }
112
 
113
    CPU->arch.clock_frequency = clock_frequency;
114
    tick_init();
115
}
116
 
117
/** Read version information from the current processor. */
118
void cpu_identify(void)
119
{
120
    CPU->arch.ver.value = ver_read();
121
}
122
 
123
/** Print version information for a processor.
124
 *
125
 * This function is called by the bootstrap processor.
126
 *
127
 * @param m Processor structure of the CPU for which version information is to
128
 *  be printed.
129
 */
130
void cpu_print_report(cpu_t *m)
131
{
132
    char *manuf, *impl;
133
 
134
    switch (m->arch.ver.manuf) {
135
    case MANUF_FUJITSU:
136
        manuf = "Fujitsu";
137
        break;
138
    case MANUF_ULTRASPARC:
139
        manuf = "UltraSPARC";
140
        break;
141
    case MANUF_SUN:
142
            manuf = "Sun";
143
        break;
144
    default:
145
        manuf = "Unknown";
146
        break;
147
    }
148
 
149
    switch (CPU->arch.ver.impl) {
150
    case IMPL_ULTRASPARCI:
151
        impl = "UltraSPARC I";
152
        break;
153
    case IMPL_ULTRASPARCII:
154
        impl = "UltraSPARC II";
155
        break;
156
    case IMPL_ULTRASPARCII_I:
157
        impl = "UltraSPARC IIi";
158
        break;
159
    case IMPL_ULTRASPARCII_E:
160
        impl = "UltraSPARC IIe";
161
        break;
162
    case IMPL_ULTRASPARCIII:
163
        impl = "UltraSPARC III";
164
        break;
165
    case IMPL_ULTRASPARCIII_PLUS:
166
        impl = "UltraSPARC III+";
167
        break;
168
    case IMPL_ULTRASPARCIII_I:
169
        impl = "UltraSPARC IIIi";
170
        break;
171
    case IMPL_ULTRASPARCIV:
172
        impl = "UltraSPARC IV";
173
        break;
174
    case IMPL_ULTRASPARCIV_PLUS:
175
        impl = "UltraSPARC IV+";
176
        break;
177
    case IMPL_SPARC64V:
178
        impl = "SPARC 64V";
179
        break;
180
    default:
181
        impl = "Unknown";
182
        break;
183
    }
184
 
185
    printf("cpu%d: manuf=%s, impl=%s, mask=%d (%d MHz)\n", m->id, manuf,
186
        impl, m->arch.ver.mask, m->arch.clock_frequency / 1000000);
187
}
188
 
189
/** @}
190
 */