2 * Copyright (c) 2003 The Regents of The University of Michigan
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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
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20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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30 * Simple disk interface for the system console
35 #include <sys/types.h>
41 #include "dev/disk_image.hh"
42 #include "base/misc.hh"
43 #include "mem/functional_mem/physical_memory.hh"
44 #include "dev/simple_disk.hh"
45 #include "base/trace.hh"
49 SimpleDisk::SimpleDisk(const string
&name
, PhysicalMemory
*pmem
,
51 : SimObject(name
), physmem(pmem
), image(img
)
54 SimpleDisk::~SimpleDisk()
59 SimpleDisk::read(Addr addr
, baddr_t block
, int count
) const
61 uint8_t *data
= physmem
->dma_addr(addr
, count
);
63 panic("dma out of range! read addr=%#x count=%d\n", addr
, 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 DPRINTF(SimpleDisk
, "read block=%#x len=%d\n", (uint64_t)block
, count
);
72 DDUMP(SimpleDiskData
, data
, count
);
76 SimpleDisk::write(Addr addr
, baddr_t block
, int count
)
78 panic("unimplemented!\n");
81 uint8_t *data
= physmem
->dma_addr(addr
, count
);
83 panic("dma out of range! write addr=%#x count=%d\n", addr
, count
);
85 image
->write(data
, block
, count
);
89 BEGIN_DECLARE_SIM_OBJECT_PARAMS(SimpleDisk
)
91 SimObjectParam
<PhysicalMemory
*> physmem
;
92 SimObjectParam
<DiskImage
*> disk
;
94 END_DECLARE_SIM_OBJECT_PARAMS(SimpleDisk
)
96 BEGIN_INIT_SIM_OBJECT_PARAMS(SimpleDisk
)
98 INIT_PARAM(physmem
, "Physical Memory"),
99 INIT_PARAM(disk
, "Disk Image")
101 END_INIT_SIM_OBJECT_PARAMS(SimpleDisk
)
103 CREATE_SIM_OBJECT(SimpleDisk
)
105 return new SimpleDisk(getInstanceName(), physmem
, disk
);
108 REGISTER_SIM_OBJECT("SimpleDisk", SimpleDisk
)