Allow CPUs to specify their own CPU ids.

Make the AlphaConsole calculate the number of CPUs instead
of passing that in as a parameter.

cpu/base.cc:
    pass the desired cpu_id into registerExecContext, offsetting it
    by the thread number.  a cpu_id of -1 means that it should be
    generated for you.
cpu/base.hh:
    Take the cpu_id as a parameter
cpu/o3/alpha_cpu_builder.cc:
cpu/simple/cpu.cc:
    Accept the cpu_id as a parameter
    while we're here, let's remove the multiplier since it is
    not used.
dev/alpha_console.cc:
    don't take the number of CPUs as a parameter.  Calculate it from
    the system based on the number of CPUs that have been registered.
    move init() code to startup() to ensure that all CPUs are registerd.
dev/alpha_console.hh:
python/m5/objects/AlphaConsole.py:
    don't take the number of CPUs as a parameter.
    move init() code to startup() to ensure that all CPUs are registerd.
python/m5/objects/BaseCPU.py:
    take the cpu_id as a parameter.  Default it to -1 which means
    that it will be generated.
sim/system.cc:
    allow the registerExecContext functioin to take a desired
    cpu_id as a parameter.  Check to ensure that the id isn't
    already used.  Accept -1 as a request to have an id assigned.
sim/system.hh:
    keep track of the number of registered exec contexts.
    provide a function for accessing the number of exec contexts
    that checks to ensure that they are all registered correctly.

--HG--
extra : convert_revision : 8e12f96ff8a49fa16cdbbdb4c05c651376c35788

4 files changed, 13 insertions, 18 deletions

diff --git a/cpu/base.cc b/cpu/base.cc
index 9e66d934f..50c777b0d 100644
--- a/cpu/base.cc
+++ b/cpu/base.cc
@@ -189,15 +189,15 @@ BaseCPU::registerExecContexts()
 {
     for (int i = 0; i < execContexts.size(); ++i) {
         ExecContext *xc = execContexts[i];
-        int cpu_id;
-
 #ifdef FULL_SYSTEM
-        cpu_id = system->registerExecContext(xc);
+        int id = params->cpu_id;
+        if (id != -1)
+            id += i;
+
+        xc->cpu_id = system->registerExecContext(xc, id);
 #else
-        cpu_id = xc->process->registerExecContext(xc);
+        xc->cpu_id = xc->process->registerExecContext(xc);
 #endif
-
-        xc->cpu_id = cpu_id;
     }
 }
 
diff --git a/cpu/base.hh b/cpu/base.hh
index cafe70b75..e28f15884 100644
--- a/cpu/base.hh
+++ b/cpu/base.hh
@@ -111,6 +111,7 @@ class BaseCPU : public SimObject
         Tick functionTraceStart;
 #ifdef FULL_SYSTEM
         System *system;
+        int cpu_id;
 #endif
     };
 
diff --git a/cpu/o3/alpha_cpu_builder.cc b/cpu/o3/alpha_cpu_builder.cc
index 57061c052..57c567471 100644
--- a/cpu/o3/alpha_cpu_builder.cc
+++ b/cpu/o3/alpha_cpu_builder.cc
@@ -71,9 +71,9 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(DerivAlphaFullCPU)
 
 #ifdef FULL_SYSTEM
 SimObjectParam<System *> system;
+Param<int> cpu_id;
 SimObjectParam<AlphaITB *> itb;
 SimObjectParam<AlphaDTB *> dtb;
-Param<int> mult;
 #else
 SimObjectVectorParam<Process *> workload;
 #endif // FULL_SYSTEM
@@ -164,9 +164,9 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(DerivAlphaFullCPU)
 
 #ifdef FULL_SYSTEM
     INIT_PARAM(system, "System object"),
+    INIT_PARAM(cpu_id, "processor ID"),
     INIT_PARAM(itb, "Instruction translation buffer"),
     INIT_PARAM(dtb, "Data translation buffer"),
-    INIT_PARAM(mult, "System clock multiplier"),
 #else
     INIT_PARAM(workload, "Processes to run"),
 #endif // FULL_SYSTEM
@@ -274,9 +274,6 @@ CREATE_SIM_OBJECT(DerivAlphaFullCPU)
     DerivAlphaFullCPU *cpu;
 
 #ifdef FULL_SYSTEM
-    if (mult != 1)
-        panic("Processor clock multiplier must be 1?\n");
-
     // Full-system only supports a single thread for the moment.
     int actual_num_threads = 1;
 #else
@@ -300,6 +297,7 @@ CREATE_SIM_OBJECT(DerivAlphaFullCPU)
 
 #ifdef FULL_SYSTEM
     params.system = system;
+    params.cpu_id = cpu_id;
     params.itb = itb;
     params.dtb = dtb;
 #else
diff --git a/cpu/simple/cpu.cc b/cpu/simple/cpu.cc
index de28913e4..1164e35a4 100644
--- a/cpu/simple/cpu.cc
+++ b/cpu/simple/cpu.cc
@@ -823,7 +823,7 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(SimpleCPU)
     SimObjectParam<AlphaDTB *> dtb;
     SimObjectParam<FunctionalMemory *> mem;
     SimObjectParam<System *> system;
-    Param<int> mult;
+    Param<int> cpu_id;
 #else
     SimObjectParam<Process *> workload;
 #endif // FULL_SYSTEM
@@ -855,7 +855,7 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(SimpleCPU)
     INIT_PARAM(dtb, "Data TLB"),
     INIT_PARAM(mem, "memory"),
     INIT_PARAM(system, "system object"),
-    INIT_PARAM(mult, "system clock multiplier"),
+    INIT_PARAM(cpu_id, "processor ID"),
 #else
     INIT_PARAM(workload, "processes to run"),
 #endif // FULL_SYSTEM
@@ -873,11 +873,6 @@ END_INIT_SIM_OBJECT_PARAMS(SimpleCPU)
 
 CREATE_SIM_OBJECT(SimpleCPU)
 {
-#ifdef FULL_SYSTEM
-    if (mult != 1)
-        panic("processor clock multiplier must be 1\n");
-#endif
-
     SimpleCPU::Params *params = new SimpleCPU::Params();
     params->name = getInstanceName();
     params->numberOfThreads = 1;
@@ -898,6 +893,7 @@ CREATE_SIM_OBJECT(SimpleCPU)
     params->dtb = dtb;
     params->mem = mem;
     params->system = system;
+    params->cpu_id = cpu_id;
 #else
     params->process = workload;
 #endif