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33 #ifndef __ARCH_MIPS_LINUX_SYSTEM_HH__
34 #define __ARCH_MIPS_LINUX_SYSTEM_HH__
41 #include "arch/mips/idle_event.hh"
42 #include "arch/mips/system.hh"
43 #include "kern/linux/events.hh"
44 #include "params/LinuxMipsSystem.hh"
46 using namespace MipsISA;
47 using namespace Linux;
50 * This class contains linux specific system code (Loading, Events).
51 * It points to objects that are the system binaries to load and patches them
52 * appropriately to work in simulator.
54 class LinuxMipsSystem : public MipsSystem
57 class SkipDelayLoopEvent : public SkipFuncEvent
60 SkipDelayLoopEvent(PCEventQueue *q, const std::string &desc, Addr addr)
61 : SkipFuncEvent(q, desc, addr) {}
62 virtual void process(ThreadContext *tc);
65 class PrintThreadInfo : public PCEvent
68 PrintThreadInfo(PCEventQueue *q, const std::string &desc, Addr addr)
69 : PCEvent(q, desc, addr) {}
70 virtual void process(ThreadContext *tc);
75 * Addresses defining where the kernel bootloader places various
76 * elements. Details found in include/asm-mips/system.h
78 Addr KernelStart; // Lookup the symbol swapper_pg_dir
81 Addr InitStack() const { return KernelStart + 0x02000; }
82 Addr EmptyPGT() const { return KernelStart + 0x04000; }
83 Addr EmptyPGE() const { return KernelStart + 0x08000; }
84 Addr ZeroPGE() const { return KernelStart + 0x0A000; }
85 Addr StartAddr() const { return KernelStart + 0x10000; }
87 Addr Param() const { return ZeroPGE() + 0x0; }
88 Addr CommandLine() const { return Param() + 0x0; }
89 Addr InitrdStart() const { return Param() + 0x100; }
90 Addr InitrdSize() const { return Param() + 0x108; }
91 static const int CommandLineSize = 256;
95 /** Event to halt the simulator if the kernel calls panic() */
96 BreakPCEvent *kernelPanicEvent;
98 /** Event to halt the simulator if the kernel calls die_if_kernel */
99 BreakPCEvent *kernelDieEvent;
103 * Event to skip determine_cpu_caches() because we don't support
104 * the IPRs that the code can access to figure out cache sizes
106 SkipFuncEvent *skipCacheProbeEvent;
108 /** PC based event to skip the ide_delay_50ms() call */
109 SkipFuncEvent *skipIdeDelay50msEvent;
112 * PC based event to skip the dprink() call and emulate its
115 DebugPrintkEvent *debugPrintkEvent;
118 * Skip calculate_delay_loop() rather than waiting for this to be
121 SkipDelayLoopEvent *skipDelayLoopEvent;
124 * Event to print information about thread switches if the trace flag
127 PrintThreadInfo *printThreadEvent;
129 /** Grab the PCBB of the idle process when it starts */
130 IdleStartEvent *idleStartEvent;
133 typedef LinuxMipsSystemParams Params;
134 LinuxMipsSystem(Params *p);
137 void setDelayLoop(ThreadContext *tc);
140 #endif // __ARCH_MIPS_LINUX_SYSTEM_HH__