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30 * System Console Interface
33 #ifndef __ALPHA_CONSOLE_HH__
34 #define __ALPHA_CONSOLE_HH__
36 #include "sim/host.hh"
37 #include "dev/alpha_access.h"
38 #include "mem/functional_mem/mmap_device.hh"
47 * Memory mapped interface to the system console. This device
48 * represents a shared data region between the OS Kernel and the
51 * The system console is a small standalone program that is initially
52 * run when the system boots. It contains the necessary code to
53 * access the boot disk, to read/write from the console, and to pass
54 * boot parameters to the kernel.
56 * This version of the system console is very different from the one
57 * that would be found in a real system. Many of the functions use
58 * some sort of backdoor to get their job done. For example, reading
59 * from the boot device on a real system would require a minimal
60 * device driver to access the disk controller, but since we have a
61 * simulator here, we are able to bypass the disk controller and
62 * access the disk image directly. There are also some things like
63 * reading the kernel off the disk image into memory that are normally
64 * taken care of by the console that are now taken care of by the
67 * These shortcuts are acceptable since the system console is
68 * primarily used doing boot before the kernel has loaded its device
71 class AlphaConsole : public MmapDevice
75 AlphaAccess *alphaAccess;
79 /** the disk must be accessed from the console */
82 /** the system console (the terminal) is accessable from the console */
86 /** Standard Constructor */
87 AlphaConsole(const std::string &name, SimConsole *cons,
88 SimpleDisk *d, int size,
89 System *system, BaseCPU *cpu,
90 TlaserClock *clock, int num_cpus,
91 Addr addr, Addr mask, MemoryController *mmu);
95 * memory mapped reads and writes
97 virtual Fault read(MemReqPtr req, uint8_t *data);
98 virtual Fault write(MemReqPtr req, const uint8_t *data);
101 * standard serialization routines for checkpointing
103 virtual void serialize(std::ostream &os);
104 virtual void unserialize(Checkpoint *cp, const std::string §ion);
107 #endif // __ALPHA_CONSOLE_HH__