From afd08879d726dbbefa3ff6018088cd6d89b53bbb Mon Sep 17 00:00:00 2001
From: Ali Saidi <Ali.Saidi@ARM.com>
Date: Wed, 4 May 2011 20:38:27 -0500
Subject: [PATCH] ARM: Add support for some more registers in the real view
 controller.

---
 src/dev/arm/rv_ctrl.cc | 10 +++++++++-
 src/dev/arm/rv_ctrl.hh |  7 +++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/dev/arm/rv_ctrl.cc b/src/dev/arm/rv_ctrl.cc
index f9cdbe8a1..e24fea737 100644
--- a/src/dev/arm/rv_ctrl.cc
+++ b/src/dev/arm/rv_ctrl.cc
@@ -43,7 +43,7 @@
 #include "mem/packet_access.hh"
 
 RealViewCtrl::RealViewCtrl(Params *p)
-    : BasicPioDevice(p)
+    : BasicPioDevice(p), flags(0)
 {
     pioSize = 0xD4;
 }
@@ -94,6 +94,9 @@ RealViewCtrl::read(PacketPtr pkt)
       case Lock:
         pkt->set<uint32_t>(sysLock);
         break;
+      case Flags:
+        pkt->set<uint32_t>(flags);
+        break;
       default:
         panic("Tried to read RealView I/O at offset %#x that doesn't exist\n", daddr);
         break;
@@ -121,6 +124,9 @@ RealViewCtrl::write(PacketPtr pkt)
       case Lock:
         sysLock.lockVal = pkt->get<uint16_t>();
         break;
+      case Flags:
+        flags = pkt->get<uint32_t>();
+        break;
       default:
         panic("Tried to write RVIO at offset %#x that doesn't exist\n", daddr);
         break;
@@ -132,11 +138,13 @@ RealViewCtrl::write(PacketPtr pkt)
 void
 RealViewCtrl::serialize(std::ostream &os)
 {
+    SERIALIZE_SCALAR(flags);
 }
 
 void
 RealViewCtrl::unserialize(Checkpoint *cp, const std::string &section)
 {
+    UNSERIALIZE_SCALAR(flags);
 }
 
 RealViewCtrl *
diff --git a/src/dev/arm/rv_ctrl.hh b/src/dev/arm/rv_ctrl.hh
index ceed5ef2f..255b21c0f 100644
--- a/src/dev/arm/rv_ctrl.hh
+++ b/src/dev/arm/rv_ctrl.hh
@@ -95,6 +95,13 @@ class RealViewCtrl : public BasicPioDevice
 
     SysLockReg sysLock;
 
+    /** This register is used for smp booting.
+     * The primary cpu writes the secondary start address here before
+     * sends it a soft interrupt. The secondary cpu reads this register and if
+     * it's non-zero it jumps to the address
+     */
+    uint32_t flags;
+
   public:
     typedef RealViewCtrlParams Params;
     const Params *
-- 
2.30.2