Subversion Repositories HelenOS

Rev

Rev 3783 | Rev 3862 | 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
 * Copyright (c) 2009 Pavel Rimsky
4
 * All rights reserved.
5
 *
6
 * Redistribution and use in source and binary forms, with or without
7
 * modification, are permitted provided that the following conditions
8
 * are met:
9
 *
10
 * - Redistributions of source code must retain the above copyright
11
 *   notice, this list of conditions and the following disclaimer.
12
 * - Redistributions in binary form must reproduce the above copyright
13
 *   notice, this list of conditions and the following disclaimer in the
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
16
 *   derived from this software without specific prior written permission.
17
 *
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
20
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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
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
27
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
 */
29
 
30
/** @addtogroup sparc64
31
 * @{
32
 */
33
/** @file
34
 */
35
 
36
#include <arch/cpu_family.h>
37
#include <cpu.h>
38
#include <arch.h>
39
#include <genarch/ofw/ofw_tree.h>
40
#include <arch/drivers/tick.h>
41
#include <print.h>
42
#include <arch/cpu_node.h>
3783 rimsky 43
#include <arch/sun4v/md.h>
44
#include <arch/sun4v/hypercall.h>
3771 rimsky 45
 
46
/** Perform sparc64 specific initialization of the processor structure for the
47
 * current processor.
48
 */
49
void cpu_arch_init(void)
50
{
3783 rimsky 51
    uint64_t myid;
52
    __hypercall_fast_ret1(0, 0, 0, 0, 0, CPU_MYID, &myid);
53
 
3798 rimsky 54
    CPU->arch.id = myid;
55
 
3783 rimsky 56
    md_node_t node = md_get_root();
57
 
58
    /* walk through MD, find the current CPU node & its clock-frequency */
59
    while (true) {
60
 
61
        if (!md_next_node(&node, "cpu")) {
62
            panic("Could not determine CPU frequency.");
63
        }
64
 
65
        uint64_t id = 0;
66
        md_get_integer_property(node, "id", &id);
67
        if (id == myid) {
68
            uint64_t clock_frequency = 0;
69
            md_get_integer_property(node, "clock-frequency",
70
                &clock_frequency);
71
            CPU->arch.clock_frequency = clock_frequency;
72
            break;
73
        }
74
    }
75
 
3771 rimsky 76
    tick_init();
77
}
78
 
3783 rimsky 79
/**
80
 * Implemented as an empty function as accessing the VER register is
3771 rimsky 81
 * a hyperprivileged operation on sun4v.
82
 */
83
void cpu_identify(void)
84
{
85
}
86
 
87
/** Print version information for a processor.
88
 *
89
 * This function is called by the bootstrap processor.
90
 *
91
 * @param m Processor structure of the CPU for which version information is to
92
 *  be printed.
93
 */
94
void cpu_print_report(cpu_t *m)
95
{
3798 rimsky 96
    printf("cpu%d: Niagara (%d MHz)\n", m->id,
97
        m->arch.clock_frequency / 1000000);
3771 rimsky 98
}
99
 
100
/** @}
101
 */