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28 * Authors: Nathan Binkert
32 * Simple disk interface for the system console
35 #include "dev/storage/simple_disk.hh"
38 #include <sys/types.h>
45 #include "base/misc.hh"
46 #include "base/trace.hh"
47 #include "debug/SimpleDisk.hh"
48 #include "debug/SimpleDiskData.hh"
49 #include "dev/storage/disk_image.hh"
50 #include "mem/port_proxy.hh"
51 #include "sim/system.hh"
55 SimpleDisk::SimpleDisk(const Params
*p
)
56 : SimObject(p
), system(p
->system
), image(p
->disk
)
59 SimpleDisk::~SimpleDisk()
64 SimpleDisk::read(Addr addr
, baddr_t block
, int count
) const
66 uint8_t *data
= new uint8_t[SectorSize
* count
];
68 if (count
& (SectorSize
- 1))
69 panic("Not reading a multiple of a sector (count = %d)", count
);
71 for (int i
= 0, j
= 0; i
< count
; i
+= SectorSize
, j
++)
72 image
->read(data
+ i
, block
+ j
);
74 system
->physProxy
.writeBlob(addr
, data
, count
);
76 DPRINTF(SimpleDisk
, "read block=%#x len=%d\n", (uint64_t)block
, count
);
77 DDUMP(SimpleDiskData
, data
, count
);
83 SimpleDisk::write(Addr addr
, baddr_t block
, int count
)
85 panic("unimplemented!\n");
88 uint8_t *data
= physmem
->dma_addr(addr
, count
);
90 panic("dma out of range! write addr=%#x count=%d\n", addr
, count
);
92 image
->write(data
, block
, count
);
97 SimpleDiskParams::create()
99 return new SimpleDisk(this);