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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 "params/SimpleDisk.hh"
49 #include "sim/system.hh"
53 SimpleDisk::SimpleDisk(const string
&name
, System
*sys
, DiskImage
*img
)
54 : SimObject(name
), system(sys
), image(img
)
57 SimpleDisk::~SimpleDisk()
62 SimpleDisk::read(Addr addr
, baddr_t block
, int count
) const
64 uint8_t *data
= new uint8_t[SectorSize
* 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 system
->functionalPort
.writeBlob(addr
, data
, count
);
74 DPRINTF(SimpleDisk
, "read block=%#x len=%d\n", (uint64_t)block
, count
);
75 DDUMP(SimpleDiskData
, data
, count
);
81 SimpleDisk::write(Addr addr
, baddr_t block
, int count
)
83 panic("unimplemented!\n");
86 uint8_t *data
= physmem
->dma_addr(addr
, count
);
88 panic("dma out of range! write addr=%#x count=%d\n", addr
, count
);
90 image
->write(data
, block
, count
);
95 SimpleDiskParams::create()
97 return new SimpleDisk(name
, system
, disk
);