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Rev 3424 Rev 3675
Line 38... Line 38...
38 
#include <string.h>
 38 
#include <string.h>
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#include <register.h>
 39 
#include <register.h>
40 
#include "main.h"
 40 
#include "main.h"
41 
#include "asm.h"
 41 
#include "asm.h"
42 
 
 42 
 
- 
 
 43 
/* these tho variables will be set by the detect_subarchitecture function */
- 
 
 44 
extern uint8_t subarchitecture;
- 
 
 45 
extern uint16_t mid_mask;
- 
 
 46 
 
43 
void write(const char *str, const int len)
 47 
void write(const char *str, const int len)
44 
{
 48 
{
45 
    int i;
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    int i;
46 
   
 50 
   
47 
    for (i = 0; i < len; i++) {
 51 
    for (i = 0; i < len; i++) {
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54 
int ofw_translate_failed(ofw_arg_t flag)
 58 
int ofw_translate_failed(ofw_arg_t flag)
55 
{
 59 
{
56 
    return flag != -1;
 60 
    return flag != -1;
57 
}
 61 
}
58 
 
 62 
 
- 
 
 63 
/**
- 
 
 64 
 * Starts all CPUs represented by following siblings of the given node,
- 
 
 65 
 * except for the current CPU.
- 
 
 66 
 *
- 
 
 67 
 * @param child     The first child of the OFW tree node whose children
- 
 
 68 
 *          represent CPUs to be woken up.
- 
 
 69 
 * @param current_mid   MID of the current CPU, the current CPU will
- 
 
 70 
 *          (of course) not be woken up.
- 
 
 71 
 * @return      Number of CPUs which have the same parent node as
59 
int ofw_cpu(void)
 72 
 *          "child".
- 
 
 73 
 */
- 
 
 74 
static int wake_cpus_in_node(phandle child, uint64_t current_mid)
60 
{
 75 
{
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"
 - 
 
73 
        : "=r" (current_mid)
 - 
 
74 
        : "r" (0), "i" (ASI_UPA_CONFIG));
 - 
 
75 
    current_mid >>= UPA_CONFIG_MID_SHIFT;
 - 
 
76 
    current_mid &= UPA_CONFIG_MID_MASK;
 - 
 
77 
 
 - 
 
78 
    int cpus;
 76 
    int cpus;
- 
 
 77 
    char type_name[BUF_SIZE];
79 
   
 78 
   
80 
    for (cpus = 0; node != 0 && node != -1; node = ofw_get_peer_node(node),
 79 
    for (cpus = 0; child != 0 && child != -1;
81 
        cpus++) {
 80 
        child = ofw_get_peer_node(child), cpus++) {
82 
        if (ofw_get_property(node, "device_type", type_name,
 81 
        if (ofw_get_property(child, "device_type", type_name,
83 
            sizeof(type_name)) > 0) {
 82 
            sizeof(type_name)) > 0) {
84 
            if (strcmp(type_name, "cpu") == 0) {
 83 
            if (strcmp(type_name, "cpu") == 0) {
85 
                uint32_t mid;
 84 
                uint32_t mid;
86 
               
 85 
               
- 
 
 86 
                /*
- 
 
 87 
                 * "upa-portid" for US, "portid" for US-III,
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 88 
                 * "cpuid" for US-IV
- 
 
 89 
                 */
- 
 
 90 
                if (ofw_get_property(
- 
 
 91 
                    child, "upa-portid",
- 
 
 92 
                    &mid, sizeof(mid)) <= 0
87 
                if (ofw_get_property(node, "upa-portid", &mid,
 93 
                    && ofw_get_property(child, "portid",
- 
 
 94 
                    &mid, sizeof(mid)) <= 0
- 
 
 95 
                    && ofw_get_property(child, "cpuid",
88 
                    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,
96 
                        NULL, node, KERNEL_VIRTUAL_ADDRESS,
 104 
                        NULL, child, KERNEL_VIRTUAL_ADDRESS,
97 
                        bootinfo.physmem_start |
 105 
                        bootinfo.physmem_start |
98 
                        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));
- 
 
 133 
    current_mid >>= ICBUS_CONFIG_MID_SHIFT;
- 
 
 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