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  1. /*
  2.  * Copyright (C) 2006 Martin Decky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup rd
  30.  * @{
  31.  */
  32.  
  33. /**
  34.  * @file    rd.c
  35.  * @brief   Initial RAM disk for HelenOS.
  36.  */
  37.  
  38. #include <ipc/ipc.h>
  39. #include <ipc/services.h>
  40. #include <ipc/ns.h>
  41. #include <sysinfo.h>
  42. #include <as.h>
  43. #include <ddi.h>
  44. #include <align.h>
  45. #include <bool.h>
  46. #include <errno.h>
  47. #include <async.h>
  48.  
  49.  
  50. static void rd_connection(ipc_callid_t iid, ipc_call_t *icall)
  51. {
  52.     ipc_callid_t callid;
  53.     ipc_call_t call;
  54.     int retval;
  55.  
  56.     ipc_answer_fast(iid, 0, 0, 0);
  57.  
  58.     while (1) {
  59.         callid = async_get_call(&call);
  60.         switch (IPC_GET_METHOD(call)) {
  61.         case IPC_M_PHONE_HUNGUP:
  62.             ipc_answer_fast(callid, 0,0,0);
  63.             return;
  64.         default:
  65.             retval = EINVAL;
  66.         }
  67.         ipc_answer_fast(callid, retval, 0, 0);
  68.     }  
  69. }
  70.  
  71.  
  72. static bool rd_init(void)
  73. {
  74.     size_t rd_size = sysinfo_value("rd.size");
  75.     void * rd_ph_addr = (void *) sysinfo_value("rd.address.physical");
  76.     int rd_color = (int) sysinfo_value("rd.address.color");
  77.    
  78.     if (rd_size == 0)
  79.         return false;
  80.    
  81.     void * rd_addr = as_get_mappable_page(rd_size, rd_color);
  82.    
  83.     physmem_map(rd_ph_addr, rd_addr, ALIGN_UP(rd_size, PAGE_SIZE) >> PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE);
  84.    
  85.     return true;
  86. }
  87.  
  88.  
  89. int main(int argc, char **argv)
  90. {
  91.     if (rd_init()) {
  92.         ipcarg_t phonead;
  93.        
  94.         async_set_client_connection(rd_connection);
  95.        
  96.         /* Register service at nameserver */
  97.         if (ipc_connect_to_me(PHONE_NS, SERVICE_RD, 0, &phonead) != 0)
  98.             return -1;
  99.        
  100.         async_manager();
  101.        
  102.         /* Never reached */
  103.         return 0;
  104.     }
  105.    
  106.     return -1;
  107. }
  108.  
  109. /**
  110.  * @}
  111.  */
  112.