source: mainline/boot/arch/sparc64/loader/ofwarch.c@ 8ccd2ea

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 8ccd2ea was e7b7be3f, checked in by Martin Decky <martin@…>, 18 years ago

asm volatile → asm volatile

  • Property mode set to 100644
File size: 3.3 KB
Line 
1/*
2 * Copyright (c) 2005 Martin Decky
3 * Copyright (c) 2006 Jakub Jermar
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/**
31 * @file
32 * @brief Architecture dependent parts of OpenFirmware interface.
33 */
34
35#include <ofwarch.h>
36#include <ofw.h>
37#include <printf.h>
38#include <string.h>
39#include <register.h>
40#include "main.h"
41#include "asm.h"
42
43void write(const char *str, const int len)
44{
45 int i;
46
47 for (i = 0; i < len; i++) {
48 if (str[i] == '\n')
49 ofw_write("\r", 1);
50 ofw_write(&str[i], 1);
51 }
52}
53
54int ofw_translate_failed(ofw_arg_t flag)
55{
56 return flag != -1;
57}
58
59int ofw_cpu(void)
60{
61 char type_name[BUF_SIZE];
62
63 phandle node;
64 node = ofw_get_child_node(ofw_root);
65 if (node == 0 || node == -1) {
66 printf("Could not find any child nodes of the root node.\n");
67 return 0;
68 }
69
70 uint64_t current_mid;
71
72 asm volatile ("ldxa [%1] %2, %0\n" : "=r" (current_mid) : "r" (0), "i" (ASI_UPA_CONFIG));
73 current_mid >>= UPA_CONFIG_MID_SHIFT;
74 current_mid &= UPA_CONFIG_MID_MASK;
75
76 int cpus;
77
78 for (cpus = 0; node != 0 && node != -1; node = ofw_get_peer_node(node), cpus++) {
79 if (ofw_get_property(node, "device_type", type_name, sizeof(type_name)) > 0) {
80 if (strcmp(type_name, "cpu") == 0) {
81 uint32_t mid;
82
83 if (ofw_get_property(node, "upa-portid", &mid, sizeof(mid)) <= 0)
84 continue;
85
86 if (current_mid != mid) {
87 /*
88 * Start secondary processor.
89 */
90 (void) ofw_call("SUNW,start-cpu", 3, 1, NULL, node,
91 KERNEL_VIRTUAL_ADDRESS,
92 bootinfo.physmem_start | AP_PROCESSOR);
93 }
94 }
95 }
96 }
97
98 return cpus;
99}
100
101/** Get physical memory starting address.
102 *
103 * @param start Pointer to variable where the physical memory starting
104 * address will be stored.
105 *
106 * @return Non-zero on succes, zero on failure.
107 */
108int ofw_get_physmem_start(uintptr_t *start)
109{
110 uint32_t memreg[4];
111
112 if (ofw_get_property(ofw_memory, "reg", &memreg, sizeof(memreg)) <= 0)
113 return 0;
114
115 *start = (((uint64_t) memreg[0]) << 32) | memreg[1];
116 return 1;
117}
118
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