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Rev | Author | Line No. | Line |
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885 | decky | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2005 Martin Decky |
3 | * Copyright (c) 2006 Jakub Jermar |
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885 | decky | 4 | * All rights reserved. |
5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions |
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8 | * are met: |
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9 | * |
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10 | * - Redistributions of source code must retain the above copyright |
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11 | * notice, this list of conditions and the following disclaimer. |
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12 | * - Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * - The name of the author may not be used to endorse or promote products |
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16 | * derived from this software without specific prior written permission. |
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17 | * |
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18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | */ |
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1789 | jermar | 29 | |
30 | /** |
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31 | * @file |
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32 | * @brief Architecture dependent parts of OpenFirmware interface. |
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33 | */ |
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34 | |||
3883 | decky | 35 | #include <ofwarch.h> |
1764 | jermar | 36 | #include <ofw.h> |
37 | #include <printf.h> |
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1881 | jermar | 38 | #include <string.h> |
1903 | jermar | 39 | #include <register.h> |
1881 | jermar | 40 | #include "main.h" |
1978 | jermar | 41 | #include "asm.h" |
885 | decky | 42 | |
3672 | jermar | 43 | /* these tho variables will be set by the detect_subarchitecture function */ |
44 | extern uint8_t subarchitecture; |
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45 | extern uint16_t mid_mask; |
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46 | |||
1764 | jermar | 47 | void write(const char *str, const int len) |
885 | decky | 48 | { |
1773 | jermar | 49 | int i; |
50 | |||
51 | for (i = 0; i < len; i++) { |
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52 | if (str[i] == '\n') |
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53 | ofw_write("\r", 1); |
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54 | ofw_write(&str[i], 1); |
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55 | } |
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885 | decky | 56 | } |
1783 | jermar | 57 | |
58 | int ofw_translate_failed(ofw_arg_t flag) |
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59 | { |
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60 | return flag != -1; |
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61 | } |
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1789 | jermar | 62 | |
3672 | jermar | 63 | /** |
64 | * Starts all CPUs represented by following siblings of the given node, |
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65 | * except for the current CPU. |
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66 | * |
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67 | * @param child The first child of the OFW tree node whose children |
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68 | * represent CPUs to be woken up. |
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69 | * @param current_mid MID of the current CPU, the current CPU will |
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70 | * (of course) not be woken up. |
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71 | * @return Number of CPUs which have the same parent node as |
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72 | * "child". |
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73 | */ |
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74 | static int wake_cpus_in_node(phandle child, uint64_t current_mid) |
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1881 | jermar | 75 | { |
3672 | jermar | 76 | int cpus; |
1881 | jermar | 77 | char type_name[BUF_SIZE]; |
78 | |||
3672 | jermar | 79 | for (cpus = 0; child != 0 && child != -1; |
80 | child = ofw_get_peer_node(child), cpus++) { |
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81 | if (ofw_get_property(child, "device_type", type_name, |
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3146 | jermar | 82 | sizeof(type_name)) > 0) { |
1896 | jermar | 83 | if (strcmp(type_name, "cpu") == 0) { |
1899 | jermar | 84 | uint32_t mid; |
1881 | jermar | 85 | |
3672 | jermar | 86 | /* |
87 | * "upa-portid" for US, "portid" for US-III, |
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88 | * "cpuid" for US-IV |
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89 | */ |
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90 | if (ofw_get_property( |
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91 | child, "upa-portid", |
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92 | &mid, sizeof(mid)) <= 0 |
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93 | && ofw_get_property(child, "portid", |
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94 | &mid, sizeof(mid)) <= 0 |
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95 | && ofw_get_property(child, "cpuid", |
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96 | &mid, sizeof(mid)) <= 0) |
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1881 | jermar | 97 | continue; |
98 | |||
1899 | jermar | 99 | if (current_mid != mid) { |
100 | /* |
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101 | * Start secondary processor. |
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102 | */ |
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3146 | jermar | 103 | (void) ofw_call("SUNW,start-cpu", 3, 1, |
3672 | jermar | 104 | NULL, child, KERNEL_VIRTUAL_ADDRESS, |
3146 | jermar | 105 | bootinfo.physmem_start | |
106 | AP_PROCESSOR); |
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1899 | jermar | 107 | } |
1881 | jermar | 108 | } |
109 | } |
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1899 | jermar | 110 | } |
1881 | jermar | 111 | |
1903 | jermar | 112 | return cpus; |
1881 | jermar | 113 | } |
1978 | jermar | 114 | |
3672 | jermar | 115 | /** |
116 | * Finds out the current CPU's MID and wakes up all AP processors. |
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117 | */ |
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118 | int ofw_cpu(void) |
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119 | { |
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120 | int cpus; |
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121 | phandle node; |
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122 | phandle subnode; |
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123 | phandle cpus_parent; |
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124 | phandle cmp; |
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125 | char name[BUF_SIZE]; |
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126 | |||
127 | /* get the current CPU MID */ |
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128 | uint64_t current_mid; |
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129 | |||
130 | asm volatile ("ldxa [%1] %2, %0\n" |
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131 | : "=r" (current_mid) |
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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; |
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136 | |||
137 | /* wake up CPUs */ |
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138 | |||
139 | cpus_parent = ofw_find_device("/ssm@0,0"); |
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140 | if (cpus_parent == 0 || cpus_parent == -1) { |
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141 | cpus_parent = ofw_find_device("/"); |
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142 | } |
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143 | |||
144 | node = ofw_get_child_node(cpus_parent); |
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145 | cpus = wake_cpus_in_node(node, current_mid); |
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146 | while (node != 0 && node != -1) { |
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147 | if (ofw_get_property(node, "name", name, |
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148 | sizeof(name)) > 0) { |
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149 | if (strcmp(name, "cmp") == 0) { |
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150 | subnode = ofw_get_child_node(node); |
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151 | cpus += wake_cpus_in_node(subnode, |
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152 | current_mid); |
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153 | } |
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154 | } |
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155 | node = ofw_get_peer_node(node); |
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156 | } |
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157 | |||
158 | return cpus; |
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159 | |||
160 | } |
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161 | |||
1978 | jermar | 162 | /** Get physical memory starting address. |
163 | * |
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3672 | jermar | 164 | * @param start Pointer to variable where the physical memory starting |
165 | * address will be stored. |
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1978 | jermar | 166 | * |
3672 | jermar | 167 | * @return Non-zero on succes, zero on failure. |
1978 | jermar | 168 | */ |
169 | int ofw_get_physmem_start(uintptr_t *start) |
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170 | { |
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171 | uint32_t memreg[4]; |
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172 | |||
173 | if (ofw_get_property(ofw_memory, "reg", &memreg, sizeof(memreg)) <= 0) |
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174 | return 0; |
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175 | |||
176 | *start = (((uint64_t) memreg[0]) << 32) | memreg[1]; |
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177 | return 1; |
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178 | } |
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179 |