Pass the location of the m5 console backdoor to the console

instead of compiling it into the console version

dev/alpha_access.h:
    move serialization stuff to alpha_console.hh
    define the ALPHA_ACCESS_BASE in m5 instead of in console.c and
    have m5 pass the value to the console
dev/alpha_console.cc:
dev/alpha_console.hh:
    Move serialization stuff into a derived class of AlphaAccess
sim/system.cc:
    pass the value of ALPHA_ACCESS_BASE to the console code via
    the m5AlphaAccess console variable.

--HG--
extra : convert_revision : 0ea4ba239f03d6dad51a6efae0385aa543064117

1 files changed, 16 insertions, 0 deletions

diff --git a/sim/system.cc b/sim/system.cc
index 3ac0fdce1..c1a4c2a87 100644
--- a/sim/system.cc
+++ b/sim/system.cc
@@ -30,6 +30,7 @@
 #include "base/loader/symtab.hh"
 #include "base/remote_gdb.hh"
 #include "cpu/exec_context.hh"
+#include "dev/alpha_access.h"
 #include "kern/kernel_stats.hh"
 #include "mem/functional/memory_control.hh"
 #include "mem/functional/physical.hh"
@@ -144,6 +145,21 @@ System::System(Params *p)
     }
 
     /**
+     * Set the m5AlphaAccess pointer in the console
+     */
+    if (consoleSymtab->findAddress("m5AlphaAccess", addr)) {
+        Addr paddr = vtophys(physmem, addr);
+        uint64_t *m5AlphaAccess =
+            (uint64_t *)physmem->dma_addr(paddr, sizeof(uint64_t));
+
+        if (!m5AlphaAccess)
+            panic("could not translate m5AlphaAccess addr\n");
+
+        *m5AlphaAccess = htoa(ALPHA_ACCESS_BASE);
+    } else
+        panic("could not find m5AlphaAccess\n");
+
+    /**
      * Set the hardware reset parameter block system type and revision
      * information to Tsunami.
      */