2 * Copyright (c) 2001-2003 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
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9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
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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,
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26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 * Simple disk interface for the system console
33 #include <sys/types.h>
41 #include "base/misc.hh"
42 #include "base/trace.hh"
43 #include "dev/disk_image.hh"
44 #include "dev/simple_disk.hh"
45 #include "mem/functional_mem/physical_memory.hh"
46 #include "sim/builder.hh"
50 SimpleDisk::SimpleDisk(const string
&name
, PhysicalMemory
*pmem
,
52 : SimObject(name
), physmem(pmem
), image(img
)
55 SimpleDisk::~SimpleDisk()
60 SimpleDisk::read(Addr addr
, baddr_t block
, int count
) const
62 uint8_t *data
= physmem
->dma_addr(addr
, count
);
64 panic("dma out of range! read addr=%#x count=%d\n", addr
, count
);
66 if (count
& (SectorSize
- 1))
67 panic("Not reading a multiple of a sector (count = %d)", count
);
69 for (int i
= 0, j
= 0; i
< count
; i
+= SectorSize
, j
++)
70 image
->read(data
+ i
, block
+ j
);
72 DPRINTF(SimpleDisk
, "read block=%#x len=%d\n", (uint64_t)block
, count
);
73 DDUMP(SimpleDiskData
, data
, count
);
77 SimpleDisk::write(Addr addr
, baddr_t block
, int count
)
79 panic("unimplemented!\n");
82 uint8_t *data
= physmem
->dma_addr(addr
, count
);
84 panic("dma out of range! write addr=%#x count=%d\n", addr
, count
);
86 image
->write(data
, block
, count
);
90 BEGIN_DECLARE_SIM_OBJECT_PARAMS(SimpleDisk
)
92 SimObjectParam
<PhysicalMemory
*> physmem
;
93 SimObjectParam
<DiskImage
*> disk
;
95 END_DECLARE_SIM_OBJECT_PARAMS(SimpleDisk
)
97 BEGIN_INIT_SIM_OBJECT_PARAMS(SimpleDisk
)
99 INIT_PARAM(physmem
, "Physical Memory"),
100 INIT_PARAM(disk
, "Disk Image")
102 END_INIT_SIM_OBJECT_PARAMS(SimpleDisk
)
104 CREATE_SIM_OBJECT(SimpleDisk
)
106 return new SimpleDisk(getInstanceName(), physmem
, disk
);
109 REGISTER_SIM_OBJECT("SimpleDisk", SimpleDisk
)