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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1999 | decky | 1 | /* |
| 2445 | decky | 2 | * Copyright (c) 2007 Michal Konopa |
| 3 | * Copyright (c) 2007 Martin Jelen |
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| 4 | * Copyright (c) 2007 Peter Majer |
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| 1999 | decky | 5 | * All rights reserved. |
| 6 | * |
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| 7 | * Redistribution and use in source and binary forms, with or without |
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| 8 | * modification, are permitted provided that the following conditions |
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| 9 | * are met: |
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| 10 | * |
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| 11 | * - Redistributions of source code must retain the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer. |
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| 13 | * - Redistributions in binary form must reproduce the above copyright |
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| 14 | * notice, this list of conditions and the following disclaimer in the |
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| 15 | * documentation and/or other materials provided with the distribution. |
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| 16 | * - The name of the author may not be used to endorse or promote products |
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| 17 | * derived from this software without specific prior written permission. |
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| 18 | * |
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| 19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 20 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 21 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 22 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 24 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 25 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 26 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 28 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 29 | */ |
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| 30 | |||
| 31 | /** @addtogroup rd |
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| 32 | * @{ |
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| 33 | */ |
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| 34 | |||
| 35 | /** |
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| 36 | * @file rd.c |
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| 37 | * @brief Initial RAM disk for HelenOS. |
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| 38 | */ |
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| 39 | |||
| 40 | #include <ipc/ipc.h> |
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| 41 | #include <ipc/services.h> |
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| 42 | #include <ipc/ns.h> |
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| 2005 | decky | 43 | #include <sysinfo.h> |
| 44 | #include <as.h> |
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| 45 | #include <ddi.h> |
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| 46 | #include <align.h> |
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| 47 | #include <bool.h> |
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| 1999 | decky | 48 | #include <errno.h> |
| 49 | #include <async.h> |
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| 2445 | decky | 50 | #include <align.h> |
| 51 | #include <async.h> |
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| 52 | #include "rd.h" |
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| 1999 | decky | 53 | |
| 2445 | decky | 54 | static void *rd_addr; |
| 55 | static void *fs_addr; |
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| 1999 | decky | 56 | |
| 57 | static void rd_connection(ipc_callid_t iid, ipc_call_t *icall) |
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| 58 | { |
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| 59 | ipc_callid_t callid; |
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| 60 | ipc_call_t call; |
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| 61 | int retval; |
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| 62 | |||
| 63 | ipc_answer_fast(iid, 0, 0, 0); |
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| 2445 | decky | 64 | ipcarg_t offset; |
| 1999 | decky | 65 | |
| 66 | while (1) { |
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| 67 | callid = async_get_call(&call); |
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| 68 | switch (IPC_GET_METHOD(call)) { |
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| 2471 | jermar | 69 | case IPC_M_PHONE_HUNGUP: |
| 70 | ipc_answer_fast(callid, 0, 0, 0); |
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| 71 | return; |
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| 72 | case IPC_M_AS_AREA_SEND: |
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| 73 | ipc_answer_fast(callid, 0, (uintptr_t) fs_addr, 0); |
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| 74 | continue; |
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| 75 | case RD_READ_BLOCK: |
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| 76 | offset = IPC_GET_ARG1(call); |
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| 77 | memcpy((void *) fs_addr, rd_addr + offset, BLOCK_SIZE); |
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| 78 | retval = EOK; |
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| 79 | break; |
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| 80 | default: |
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| 81 | retval = EINVAL; |
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| 1999 | decky | 82 | } |
| 83 | ipc_answer_fast(callid, retval, 0, 0); |
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| 2471 | jermar | 84 | } |
| 1999 | decky | 85 | } |
| 86 | |||
| 87 | |||
| 2005 | decky | 88 | static bool rd_init(void) |
| 1999 | decky | 89 | { |
| 2445 | decky | 90 | int retval, flags; |
| 91 | |||
| 2005 | decky | 92 | size_t rd_size = sysinfo_value("rd.size"); |
| 2471 | jermar | 93 | void *rd_ph_addr = (void *) sysinfo_value("rd.address.physical"); |
| 1999 | decky | 94 | |
| 2005 | decky | 95 | if (rd_size == 0) |
| 96 | return false; |
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| 1999 | decky | 97 | |
| 2445 | decky | 98 | rd_addr = as_get_mappable_page(rd_size); |
| 2005 | decky | 99 | |
| 2445 | decky | 100 | flags = AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE; |
| 2471 | jermar | 101 | retval = physmem_map(rd_ph_addr, rd_addr, |
| 102 | ALIGN_UP(rd_size, PAGE_SIZE) >> PAGE_WIDTH, flags); |
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| 2445 | decky | 103 | |
| 104 | if (retval < 0) |
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| 105 | return false; |
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| 2005 | decky | 106 | |
| 2445 | decky | 107 | size_t fs_size = ALIGN_UP(BLOCK_SIZE * sizeof(char), PAGE_SIZE); |
| 108 | fs_addr = as_get_mappable_page(fs_size); |
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| 109 | |||
| 2005 | decky | 110 | return true; |
| 111 | } |
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| 1999 | decky | 112 | |
| 2005 | decky | 113 | int main(int argc, char **argv) |
| 114 | { |
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| 115 | if (rd_init()) { |
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| 116 | ipcarg_t phonead; |
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| 117 | |||
| 118 | async_set_client_connection(rd_connection); |
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| 119 | |||
| 120 | /* Register service at nameserver */ |
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| 121 | if (ipc_connect_to_me(PHONE_NS, SERVICE_RD, 0, &phonead) != 0) |
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| 122 | return -1; |
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| 123 | |||
| 124 | async_manager(); |
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| 125 | |||
| 126 | /* Never reached */ |
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| 127 | return 0; |
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| 128 | } |
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| 129 | |||
| 130 | return -1; |
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| 1999 | decky | 131 | } |
| 132 | |||
| 133 | /** |
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| 134 | * @} |
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| 135 | */ |