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Rev | Author | Line No. | Line |
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1999 | decky | 1 | /* |
2435 | jelen | 2 | * Copyright (c) 2007 Konopa-Jelen-Majer |
1999 | decky | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
2435 | jelen | 29 | /** @addtogroup RamDiskTask |
1999 | decky | 30 | * @{ |
31 | */ |
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32 | |||
33 | /** |
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34 | * @file rd.c |
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35 | * @brief Initial RAM disk for HelenOS. |
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36 | */ |
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37 | |||
38 | #include <ipc/ipc.h> |
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39 | #include <ipc/services.h> |
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40 | #include <ipc/ns.h> |
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2005 | decky | 41 | #include <sysinfo.h> |
42 | #include <as.h> |
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43 | #include <ddi.h> |
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44 | #include <align.h> |
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45 | #include <bool.h> |
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1999 | decky | 46 | #include <errno.h> |
47 | #include <async.h> |
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2248 | jelen | 48 | #include <stdlib.h> |
49 | #include <unistd.h> |
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50 | #include <align.h> |
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51 | #include <async.h> |
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52 | #include <ddi.h> |
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53 | #include <libarch/ddi.h> |
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2396 | konopa | 54 | #include <stdio.h> |
2248 | jelen | 55 | #include "rd.h" |
2396 | konopa | 56 | #include "../console/console.h" |
57 | #include "../share/base_const.h" |
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1999 | decky | 58 | |
2248 | jelen | 59 | |
2396 | konopa | 60 | #define CON_CONN_ATTEMPTS 1000 |
2248 | jelen | 61 | |
2396 | konopa | 62 | static int con_phone; |
63 | static void *rd_addr; |
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64 | static void *fs_addr; |
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65 | |||
66 | static int connect_to_con(int *phone, int attempts); |
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67 | |||
1999 | decky | 68 | static void rd_connection(ipc_callid_t iid, ipc_call_t *icall) |
69 | { |
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70 | ipc_callid_t callid; |
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71 | ipc_call_t call; |
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72 | int retval; |
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73 | |||
74 | ipc_answer_fast(iid, 0, 0, 0); |
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2248 | jelen | 75 | ipcarg_t dst, offset; |
1999 | decky | 76 | |
77 | while (1) { |
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78 | callid = async_get_call(&call); |
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79 | switch (IPC_GET_METHOD(call)) { |
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2396 | konopa | 80 | case IPC_M_PHONE_HUNGUP: |
81 | ipc_answer_fast(callid, 0,0,0); |
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82 | return; |
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83 | case IPC_M_AS_AREA_SEND: |
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84 | //print_console("Receiving shared area from FS..."); |
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85 | ipc_answer_fast(callid, 0, (uintptr_t)fs_addr, 0); |
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86 | //print_console("OK\n"); |
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87 | continue; |
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88 | case RD_READ_BLOCK: |
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89 | offset = IPC_GET_ARG1(call); |
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90 | memcpy((void *)fs_addr, rd_addr+offset, BLOCK_SIZE); |
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91 | retval = OK; |
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92 | break; |
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93 | default: retval = EINVAL; |
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1999 | decky | 94 | } |
95 | ipc_answer_fast(callid, retval, 0, 0); |
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96 | } |
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97 | } |
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98 | |||
99 | |||
2005 | decky | 100 | static bool rd_init(void) |
1999 | decky | 101 | { |
2396 | konopa | 102 | |
103 | int retval, flags; |
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104 | |||
2005 | decky | 105 | size_t rd_size = sysinfo_value("rd.size"); |
106 | void * rd_ph_addr = (void *) sysinfo_value("rd.address.physical"); |
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2015 | jermar | 107 | int rd_color = (int) sysinfo_value("rd.address.color"); |
1999 | decky | 108 | |
2005 | decky | 109 | if (rd_size == 0) |
110 | return false; |
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1999 | decky | 111 | |
2248 | jelen | 112 | rd_addr = as_get_mappable_page(rd_size, rd_color); |
2005 | decky | 113 | |
2396 | konopa | 114 | //print_console("Physmem mapping..."); |
115 | flags = AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE; |
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116 | retval = physmem_map(rd_ph_addr, rd_addr, ALIGN_UP(rd_size, PAGE_SIZE) >> PAGE_WIDTH, flags); |
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117 | |||
118 | if (retval < 0) { |
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119 | //print_console_int("%d\n", retval); |
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120 | return FALSE; |
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121 | } |
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122 | //print_console("OK\n"); |
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123 | |||
124 | size_t fs_size = ALIGN_UP(BLOCK_SIZE * sizeof(char), PAGE_SIZE); |
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125 | fs_addr = as_get_mappable_page(fs_size, PAGE_COLOR((uintptr_t)fs_addr)); |
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126 | |||
127 | return TRUE; |
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128 | } |
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129 | |||
130 | int connect_to_con(int *phone, int attempts) |
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131 | { |
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2005 | decky | 132 | |
2396 | konopa | 133 | int i; |
134 | |||
135 | if (attempts <= 0) |
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136 | return FALSE; |
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137 | |||
138 | for (i = 1; i <= attempts; i++) { |
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139 | *phone = ipc_connect_me_to(PHONE_NS, SERVICE_CONSOLE, 0); |
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140 | |||
141 | if (*phone > 0) |
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142 | return TRUE; |
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143 | |||
144 | usleep(10000); |
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145 | } |
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146 | |||
147 | if (*phone >= 0) |
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148 | return TRUE; |
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149 | |||
150 | return FALSE; |
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2005 | decky | 151 | } |
1999 | decky | 152 | |
2005 | decky | 153 | int main(int argc, char **argv) |
154 | { |
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2396 | konopa | 155 | |
156 | /* Connection to SERVICE_CONSOLE service. */ |
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157 | if (!connect_to_con(&con_phone, CON_CONN_ATTEMPTS)) { |
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158 | return -1; |
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159 | } |
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160 | |||
161 | //print_console("RAMDISK task\n"); |
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162 | |||
2005 | decky | 163 | if (rd_init()) { |
164 | ipcarg_t phonead; |
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165 | |||
166 | async_set_client_connection(rd_connection); |
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167 | |||
168 | /* Register service at nameserver */ |
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169 | if (ipc_connect_to_me(PHONE_NS, SERVICE_RD, 0, &phonead) != 0) |
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170 | return -1; |
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171 | |||
172 | async_manager(); |
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173 | |||
174 | /* Never reached */ |
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175 | return 0; |
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176 | } |
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177 | |||
178 | return -1; |
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1999 | decky | 179 | } |
180 | |||
181 | /** |
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182 | * @} |
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183 | */ |