gem5  v21.1.0.2
simple_disk.cc
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28 
29 /* @file
30  * Simple disk interface for the system console
31  */
32 
34 
35 #include <fcntl.h>
36 #include <sys/types.h>
37 #include <sys/uio.h>
38 #include <unistd.h>
39 
40 #include <cstring>
41 #include <string>
42 
43 #include "base/logging.hh"
44 #include "base/trace.hh"
45 #include "debug/SimpleDisk.hh"
46 #include "debug/SimpleDiskData.hh"
48 #include "mem/port_proxy.hh"
49 #include "sim/system.hh"
50 
51 namespace gem5
52 {
53 
55  : SimObject(p), system(p.system), image(p.disk)
56 {}
57 
59 {}
60 
61 
62 void
64 {
65  uint8_t *data = new uint8_t[SectorSize * count];
66 
67  if (count & (SectorSize - 1))
68  panic("Not reading a multiple of a sector (count = %d)", count);
69 
70  for (int i = 0, j = 0; i < count; i += SectorSize, j++)
71  image->read(data + i, block + j);
72 
74 
75  DPRINTF(SimpleDisk, "read block=%#x len=%d\n", (uint64_t)block, count);
76  DDUMP(SimpleDiskData, data, count);
77 
78  delete [] data;
79 }
80 
81 void
83 {
84  panic("unimplemented!\n");
85 }
86 
87 } // namespace gem5
gem5::SimpleDisk::system
System * system
Definition: simple_disk.hh:54
gem5::PortProxy::writeBlob
void writeBlob(Addr addr, const void *p, int size) const
Same as tryWriteBlob, but insists on success.
Definition: port_proxy.hh:192
system.hh
data
const char data[]
Definition: circlebuf.test.cc:48
gem5::SimpleDisk::write
void write(Addr addr, baddr_t block, int count)
Definition: simple_disk.cc:82
gem5::System::physProxy
PortProxy physProxy
Port to physical memory used for writing object files into ram at boot.
Definition: system.hh:332
SectorSize
#define SectorSize
Definition: disk_image.hh:44
gem5::SimpleDisk::baddr_t
uint64_t baddr_t
Definition: simple_disk.hh:51
disk_image.hh
gem5::SimpleDisk::image
DiskImage * image
Definition: simple_disk.hh:55
gem5::SimpleDisk::SimpleDisk
SimpleDisk(const Params &p)
Definition: simple_disk.cc:54
gem5::X86ISA::system
Bitfield< 15 > system
Definition: misc.hh:1003
gem5::SimpleDisk::Params
SimpleDiskParams Params
Definition: simple_disk.hh:58
gem5::ArmISA::i
Bitfield< 7 > i
Definition: misc_types.hh:66
gem5::SimpleDisk::~SimpleDisk
~SimpleDisk()
Definition: simple_disk.cc:58
gem5::ArmISA::j
Bitfield< 24 > j
Definition: misc_types.hh:57
DPRINTF
#define DPRINTF(x,...)
Definition: trace.hh:186
gem5::X86ISA::count
count
Definition: misc.hh:709
gem5::MipsISA::p
Bitfield< 0 > p
Definition: pra_constants.hh:326
port_proxy.hh
gem5::SimpleDisk
Definition: simple_disk.hh:48
gem5::SimObject
Abstract superclass for simulation objects.
Definition: sim_object.hh:146
gem5::SimpleDisk::read
void read(Addr addr, baddr_t block, int count) const
Definition: simple_disk.cc:63
gem5::Addr
uint64_t Addr
Address type This will probably be moved somewhere else in the near future.
Definition: types.hh:147
DDUMP
#define DDUMP(x, data, count)
DPRINTF is a debugging trace facility that allows one to selectively enable tracing statements.
Definition: trace.hh:180
logging.hh
gem5::DiskImage::read
virtual std::streampos read(uint8_t *data, std::streampos offset) const =0
trace.hh
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: decoder.cc:40
simple_disk.hh
panic
#define panic(...)
This implements a cprintf based panic() function.
Definition: logging.hh:177
gem5::X86ISA::addr
Bitfield< 3 > addr
Definition: types.hh:84

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