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Rev 3424 Rev 3675
Line 38... Line 38...
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#include <string.h>
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#include <string.h>
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#include <register.h>
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#include <register.h>
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#include "main.h"
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#include "main.h"
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#include "asm.h"
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#include "asm.h"
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/* these tho variables will be set by the detect_subarchitecture function */
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extern uint8_t subarchitecture;
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extern uint16_t mid_mask;
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void write(const char *str, const int len)
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void write(const char *str, const int len)
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{
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{
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    int i;
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    int i;
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    for (i = 0; i < len; i++) {
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    for (i = 0; i < len; i++) {
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int ofw_translate_failed(ofw_arg_t flag)
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int ofw_translate_failed(ofw_arg_t flag)
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{
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{
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    return flag != -1;
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    return flag != -1;
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}
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}
58
 
62
 
-
 
63
/**
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 * Starts all CPUs represented by following siblings of the given node,
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 * except for the current CPU.
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 *
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 * @param child     The first child of the OFW tree node whose children
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 *          represent CPUs to be woken up.
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 * @param current_mid   MID of the current CPU, the current CPU will
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 *          (of course) not be woken up.
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 * @return      Number of CPUs which have the same parent node as
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int ofw_cpu(void)
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 *          "child".
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 */
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static int wake_cpus_in_node(phandle child, uint64_t current_mid)
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{
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{
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    char type_name[BUF_SIZE];
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    phandle node;
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    node = ofw_get_child_node(ofw_root);
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65
    if (node == 0 || node == -1) {
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        printf("Could not find any child nodes of the root node.\n");
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        return 0;
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    }
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69
   
-
 
70
    uint64_t current_mid;
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71
   
-
 
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    asm volatile ("ldxa [%1] %2, %0\n"
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        : "=r" (current_mid)
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        : "r" (0), "i" (ASI_UPA_CONFIG));
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    current_mid >>= UPA_CONFIG_MID_SHIFT;
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    current_mid &= UPA_CONFIG_MID_MASK;
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77
 
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    int cpus;
76
    int cpus;
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77
    char type_name[BUF_SIZE];
79
   
78
   
80
    for (cpus = 0; node != 0 && node != -1; node = ofw_get_peer_node(node),
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    for (cpus = 0; child != 0 && child != -1;
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        cpus++) {
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        child = ofw_get_peer_node(child), cpus++) {
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        if (ofw_get_property(node, "device_type", type_name,
81
        if (ofw_get_property(child, "device_type", type_name,
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            sizeof(type_name)) > 0) {
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            sizeof(type_name)) > 0) {
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            if (strcmp(type_name, "cpu") == 0) {
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            if (strcmp(type_name, "cpu") == 0) {
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                uint32_t mid;
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                uint32_t mid;
86
               
85
               
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                /*
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                 * "upa-portid" for US, "portid" for US-III,
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                 * "cpuid" for US-IV
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89
                 */
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                if (ofw_get_property(
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                    child, "upa-portid",
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                    &mid, sizeof(mid)) <= 0
87
                if (ofw_get_property(node, "upa-portid", &mid,
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                    && ofw_get_property(child, "portid",
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                    &mid, sizeof(mid)) <= 0
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                    && ofw_get_property(child, "cpuid",
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                    sizeof(mid)) <= 0)
96
                    &mid, sizeof(mid)) <= 0)
89
                    continue;
97
                    continue;
90
                   
98
                   
91
                if (current_mid != mid) {
99
                if (current_mid != mid) {
92
                    /*
100
                    /*
93
                     * Start secondary processor.
101
                     * Start secondary processor.
94
                     */
102
                     */
95
                    (void) ofw_call("SUNW,start-cpu", 3, 1,
103
                    (void) ofw_call("SUNW,start-cpu", 3, 1,
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                        NULL, node, KERNEL_VIRTUAL_ADDRESS,
104
                        NULL, child, KERNEL_VIRTUAL_ADDRESS,
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                        bootinfo.physmem_start |
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                        bootinfo.physmem_start |
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                        AP_PROCESSOR);
106
                        AP_PROCESSOR);
99
                }
107
                }
100
            }
108
            }
101
        }
109
        }
102
    }
110
    }
103
 
111
 
104
    return cpus;
112
    return cpus;
105
}
113
}
106
 
114
 
-
 
115
/**
-
 
116
 * Finds out the current CPU's MID and wakes up all AP processors.
-
 
117
 */
-
 
118
int ofw_cpu(void)
-
 
119
{
-
 
120
    int cpus;
-
 
121
    phandle node;
-
 
122
    phandle subnode;
-
 
123
    phandle cpus_parent;
-
 
124
    phandle cmp;
-
 
125
    char name[BUF_SIZE];
-
 
126
 
-
 
127
    /* get the current CPU MID */
-
 
128
    uint64_t current_mid;
-
 
129
   
-
 
130
    asm volatile ("ldxa [%1] %2, %0\n"
-
 
131
        : "=r" (current_mid)
-
 
132
        : "r" (0), "i" (ASI_ICBUS_CONFIG));
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133
    current_mid >>= ICBUS_CONFIG_MID_SHIFT;
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134
 
-
 
135
    current_mid &= mid_mask;
-
 
136
 
-
 
137
    /* wake up CPUs */
-
 
138
   
-
 
139
    cpus_parent = ofw_find_device("/ssm@0,0");
-
 
140
    if (cpus_parent == 0 || cpus_parent == -1) {
-
 
141
        cpus_parent = ofw_find_device("/");
-
 
142
    }
-
 
143
 
-
 
144
    node = ofw_get_child_node(cpus_parent);
-
 
145
    cpus = wake_cpus_in_node(node, current_mid);
-
 
146
    while (node != 0 && node != -1) {
-
 
147
        if (ofw_get_property(node, "name", name,
-
 
148
            sizeof(name)) > 0) {
-
 
149
            if (strcmp(name, "cmp") == 0) {
-
 
150
                subnode = ofw_get_child_node(node);
-
 
151
                cpus += wake_cpus_in_node(subnode,
-
 
152
                    current_mid);
-
 
153
            }
-
 
154
        }
-
 
155
        node = ofw_get_peer_node(node);
-
 
156
    }
-
 
157
   
-
 
158
    return cpus;
-
 
159
   
-
 
160
}
-
 
161
 
107
/** Get physical memory starting address.
162
/** Get physical memory starting address.
108
 *
163
 *
109
 * @param start Pointer to variable where the physical memory starting
164
 * @param start     Pointer to variable where the physical memory starting
110
 *      address will be stored.
165
 *          address will be stored.
111
 *
166
 *
112
 * @return Non-zero on succes, zero on failure.
167
 * @return      Non-zero on succes, zero on failure.
113
 */
168
 */
114
int ofw_get_physmem_start(uintptr_t *start)
169
int ofw_get_physmem_start(uintptr_t *start)
115
{
170
{
116
    uint32_t memreg[4];
171
    uint32_t memreg[4];
117
 
172