From d172447a7ae945139d0c3465b8504cd6b77ae819 Mon Sep 17 00:00:00 2001
From: Nathan Binkert <binkertn@umich.edu>
Date: Tue, 28 Jun 2005 01:09:13 -0400
Subject: [PATCH] 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
---
 dev/alpha_access.h   | 19 ++++++++-----------
 dev/alpha_console.cc |  6 +++---
 dev/alpha_console.hh |  8 +++++++-
 sim/system.cc        | 16 ++++++++++++++++
 4 files changed, 34 insertions(+), 15 deletions(-)

diff --git a/dev/alpha_access.h b/dev/alpha_access.h
index 07350d622..b62966ea0 100644
--- a/dev/alpha_access.h
+++ b/dev/alpha_access.h
@@ -33,15 +33,17 @@
  * System Console Memory Mapped Register Definition
  */
 
-#define ALPHA_ACCESS_VERSION (1302)
+#define ALPHA_ACCESS_VERSION (1303)
 
-#ifndef CONSOLE
-#include <iosfwd>
-#include <string>
-class Checkpoint;
-#else
+#ifdef CONSOLE
 typedef unsigned uint32_t;
 typedef unsigned long uint64_t;
+#else
+#ifdef ALPHA_TLASER
+#define ALPHA_ACCESS_BASE ULL(0xfffffc8000a00000)
+#else
+#define ALPHA_ACCESS_BASE ULL(0xfffffd0200000000)
+#endif
 #endif
 
 // This structure hacked up from simos
@@ -74,11 +76,6 @@ struct AlphaAccess
     uint64_t	bootStrapImpure;	// 70:
     uint32_t	bootStrapCPU;		// 78:
     uint32_t	align2;			// 7C: Dummy placeholder for alignment
-
-#ifndef CONSOLE
-    void serialize(std::ostream &os);
-    void unserialize(Checkpoint *cp, const std::string &section);
-#endif
 };
 
 #endif // __ALPHA_ACCESS_H__
diff --git a/dev/alpha_console.cc b/dev/alpha_console.cc
index 2cbe60f47..3c009d4bd 100644
--- a/dev/alpha_console.cc
+++ b/dev/alpha_console.cc
@@ -69,7 +69,7 @@ AlphaConsole::AlphaConsole(const string &name, SimConsole *cons, SimpleDisk *d,
         pioInterface->addAddrRange(RangeSize(addr, size));
     }
 
-    alphaAccess = new AlphaAccess;
+    alphaAccess = new Access;
     alphaAccess->last_offset = size - 1;
 
     alphaAccess->version = ALPHA_ACCESS_VERSION;
@@ -268,7 +268,7 @@ AlphaConsole::cacheAccess(MemReqPtr &req)
 }
 
 void
-AlphaAccess::serialize(ostream &os)
+AlphaConsole::Access::serialize(ostream &os)
 {
     SERIALIZE_SCALAR(last_offset);
     SERIALIZE_SCALAR(version);
@@ -291,7 +291,7 @@ AlphaAccess::serialize(ostream &os)
 }
 
 void
-AlphaAccess::unserialize(Checkpoint *cp, const std::string &section)
+AlphaConsole::Access::unserialize(Checkpoint *cp, const std::string &section)
 {
     UNSERIALIZE_SCALAR(last_offset);
     UNSERIALIZE_SCALAR(version);
diff --git a/dev/alpha_console.hh b/dev/alpha_console.hh
index 63e0d3ae4..eb59626f5 100644
--- a/dev/alpha_console.hh
+++ b/dev/alpha_console.hh
@@ -72,8 +72,14 @@ class SimpleDisk;
 class AlphaConsole : public PioDevice
 {
   protected:
+    struct Access : public AlphaAccess
+    {
+        void serialize(std::ostream &os);
+        void unserialize(Checkpoint *cp, const std::string &section);
+    };
+
     union {
-        AlphaAccess *alphaAccess;
+        Access *alphaAccess;
         uint8_t *consoleData;
     };
 
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"
@@ -143,6 +144,21 @@ System::System(Params *p)
               strcpy(osflags, params->boot_osflags.c_str());
     }
 
+    /**
+     * 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.
-- 
2.30.2