source: mainline/kernel/arch/sparc64/src/cpu/cpu.c@ cd896e2

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since cd896e2 was cd896e2, checked in by Jakub Jermar <jakub@…>, 19 years ago

Remove old stuff.
  • Property mode set to 100644
File size: 4.3 KB
Line 
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/asm.h>
36#include <cpu.h>
37#include <arch.h>
38#include <print.h>
39#include <arch/register.h>
40#include <genarch/ofw/ofw_tree.h>
41#include <arch/types.h>
42#include <arch/drivers/tick.h>
43#include <arch/mm/page.h>
44#include <arch/mm/tlb.h>
45#include <macros.h>
46
47/** Perform sparc64 specific initialization of the processor structure for the current processor. */
48void cpu_arch_init(void)
49{
50 ofw_tree_node_t *node;
51 uint32_t mid;
52 uint32_t clock_frequency = 0;
53 upa_config_t upa_config;
54
55 upa_config.value = upa_config_read();
56 CPU->arch.mid = upa_config.mid;
57
58 /*
59 * Detect processor frequency.
60 */
61 node = ofw_tree_find_child_by_device_type(ofw_tree_lookup("/"), "cpu");
62 while (node) {
63 ofw_tree_property_t *prop;
64
65 prop = ofw_tree_getprop(node, "upa-portid");
66 if (prop && prop->value) {
67 mid = *((uint32_t *) prop->value);
68 if (mid == CPU->arch.mid) {
69 prop = ofw_tree_getprop(node, "clock-frequency");
70 if (prop && prop->value)
71 clock_frequency = *((uint32_t *) prop->value);
72 }
73 }
74 node = ofw_tree_find_peer_by_device_type(node, "cpu");
75 }
76
77 CPU->arch.clock_frequency = clock_frequency;
78 tick_init();
79
80 /*
81 * Lock CPU stack in DTLB.
82 */
83 uintptr_t base = ALIGN_DOWN(config.base, 1<<KERNEL_PAGE_WIDTH);
84
85 if (!overlaps((uintptr_t) CPU->stack, PAGE_SIZE, base, (1<<KERNEL_PAGE_WIDTH))) {
86 /*
87 * Kernel stack of this processor is not locked in DTLB.
88 * First, demap any already existing mappings.
89 * Second, create a locked mapping for it.
90 */
91 dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, (uintptr_t) CPU->stack);
92 dtlb_insert_mapping((uintptr_t) CPU->stack, KA2PA(CPU->stack), PAGESIZE_8K, true, true);
93 }
94}
95
96/** Read version information from the current processor. */
97void cpu_identify(void)
98{
99 CPU->arch.ver.value = ver_read();
100}
101
102/** Print version information for a processor.
103 *
104 * This function is called by the bootstrap processor.
105 *
106 * @param m Processor structure of the CPU for which version information is to be printed.
107 */
108void cpu_print_report(cpu_t *m)
109{
110 char *manuf, *impl;
111
112 switch (m->arch.ver.manuf) {
113 case MANUF_FUJITSU:
114 manuf = "Fujitsu";
115 break;
116 case MANUF_ULTRASPARC:
117 manuf = "UltraSPARC";
118 break;
119 case MANUF_SUN:
120 manuf = "Sun";
121 break;
122 default:
123 manuf = "Unknown";
124 break;
125 }
126
127 switch (CPU->arch.ver.impl) {
128 case IMPL_ULTRASPARCI:
129 impl = "UltraSPARC I";
130 break;
131 case IMPL_ULTRASPARCII:
132 impl = "UltraSPARC II";
133 break;
134 case IMPL_ULTRASPARCII_I:
135 impl = "UltraSPARC IIi";
136 break;
137 case IMPL_ULTRASPARCII_E:
138 impl = "UltraSPARC IIe";
139 break;
140 case IMPL_ULTRASPARCIII:
141 impl = "UltraSPARC III";
142 break;
143 case IMPL_ULTRASPARCIV_PLUS:
144 impl = "UltraSPARC IV+";
145 break;
146 case IMPL_SPARC64V:
147 impl = "SPARC 64V";
148 break;
149 default:
150 impl = "Unknown";
151 break;
152 }
153
154 printf("cpu%d: manuf=%s, impl=%s, mask=%d (%dMHz)\n",
155 m->id, manuf, impl, m->arch.ver.mask, m->arch.clock_frequency/1000000);
156}
157
158/** @}
159 */
Note: See TracBrowser for help on using the repository browser.