| 1 | /*
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| 2 | * Copyright (C) 2006 Martin Decky
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| 3 | * All rights reserved.
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| 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 |
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| 29 | /** @addtogroup rd
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| 30 | * @{
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| 31 | */
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| 32 |
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| 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 |
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| 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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| 41 | #include <sysinfo.h>
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| 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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| 46 | #include <errno.h>
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| 47 | #include <async.h>
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| 48 |
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| 49 |
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| 50 | static void rd_connection(ipc_callid_t iid, ipc_call_t *icall)
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| 51 | {
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| 52 | ipc_callid_t callid;
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| 53 | ipc_call_t call;
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| 54 | int retval;
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| 55 |
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| 56 | ipc_answer_fast(iid, 0, 0, 0);
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| 57 |
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| 58 | while (1) {
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| 59 | callid = async_get_call(&call);
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| 60 | switch (IPC_GET_METHOD(call)) {
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| 61 | case IPC_M_PHONE_HUNGUP:
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| 62 | ipc_answer_fast(callid, 0,0,0);
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| 63 | return;
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| 64 | default:
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| 65 | retval = EINVAL;
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| 66 | }
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| 67 | ipc_answer_fast(callid, retval, 0, 0);
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| 68 | }
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| 69 | }
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| 70 |
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| 71 |
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| 72 | static bool rd_init(void)
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| 73 | {
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| 74 | size_t rd_size = sysinfo_value("rd.size");
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| 75 | void * rd_ph_addr = (void *) sysinfo_value("rd.address.physical");
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| 76 |
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| 77 | if (rd_size == 0)
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| 78 | return false;
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| 79 |
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| 80 | void * rd_addr = as_get_mappable_page(rd_size);
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| 81 |
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| 82 | map_physmem(rd_ph_addr, rd_addr, ALIGN_UP(rd_size, PAGE_SIZE) >> PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE);
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| 83 |
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| 84 | return true;
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| 85 | }
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| 86 |
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| 87 |
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| 88 | int main(int argc, char **argv)
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| 89 | {
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| 90 | if (rd_init()) {
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| 91 | ipcarg_t phonead;
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| 92 |
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| 93 | async_set_client_connection(rd_connection);
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| 94 |
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| 95 | /* Register service at nameserver */
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| 96 | if (ipc_connect_to_me(PHONE_NS, SERVICE_RD, 0, &phonead) != 0)
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| 97 | return -1;
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| 98 |
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| 99 | async_manager();
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| 100 |
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| 101 | /* Never reached */
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| 102 | return 0;
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| 103 | }
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| 104 |
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| 105 | return -1;
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| 106 | }
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| 107 |
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| 108 | /**
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| 109 | * @}
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| 110 | */
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