2 * Copyright (c) 2001-2005 The Regents of The University of Michigan
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * 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
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * Authors: Nathan Binkert
32 * Simple disk interface for the system console
35 #include <sys/types.h>
43 #include "base/misc.hh"
44 #include "base/trace.hh"
45 #include "dev/disk_image.hh"
46 #include "dev/simple_disk.hh"
47 #include "mem/port.hh"
48 #include "sim/system.hh"
52 SimpleDisk::SimpleDisk(const Params
*p
)
53 : SimObject(p
), system(p
->system
), image(p
->disk
)
56 SimpleDisk::~SimpleDisk()
61 SimpleDisk::read(Addr addr
, baddr_t block
, int count
) const
63 uint8_t *data
= new uint8_t[SectorSize
* count
];
65 if (count
& (SectorSize
- 1))
66 panic("Not reading a multiple of a sector (count = %d)", count
);
68 for (int i
= 0, j
= 0; i
< count
; i
+= SectorSize
, j
++)
69 image
->read(data
+ i
, block
+ j
);
71 system
->functionalPort
.writeBlob(addr
, data
, count
);
73 DPRINTF(SimpleDisk
, "read block=%#x len=%d\n", (uint64_t)block
, count
);
74 DDUMP(SimpleDiskData
, data
, count
);
80 SimpleDisk::write(Addr addr
, baddr_t block
, int count
)
82 panic("unimplemented!\n");
85 uint8_t *data
= physmem
->dma_addr(addr
, count
);
87 panic("dma out of range! write addr=%#x count=%d\n", addr
, count
);
89 image
->write(data
, block
, count
);
94 SimpleDiskParams::create()
96 return new SimpleDisk(this);