From 45363ea658251df0c31a75d7bd5d0ac3a3809623 Mon Sep 17 00:00:00 2001 From: Kevin Lim Date: Thu, 2 Nov 2006 15:20:37 -0500 Subject: Have bus use the BadAddress device to handle bad addresses. The O3 CPU should be able to boot into Linux with caches on after this change. src/mem/bus.cc: src/mem/bus.hh: Bus now will be setup with a default responder, unless the user overrides it. This default responder should return BadAddress if no matching port is found. src/python/m5/objects/Bus.py: Bus now has a default responder for FS mode if the user doesn't override it. It returns BadAddress if no matching port is found. src/python/m5/objects/Tsunami.py: Add bad address device. Also record when the user has specified their own default responder. --HG-- extra : convert_revision : 59070477ae313ee711b2d59baa2369c9a91c5b85 --- src/mem/bus.hh | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'src/mem/bus.hh') diff --git a/src/mem/bus.hh b/src/mem/bus.hh index 7ec7e6830..619720a79 100644 --- a/src/mem/bus.hh +++ b/src/mem/bus.hh @@ -240,6 +240,9 @@ class Bus : public MemObject /** Port that handles requests that don't match any of the interfaces.*/ BusPort *defaultPort; + /** Has the user specified their own default responder? */ + bool responderSet; + public: /** A function used to return the port associated with this bus object. */ @@ -247,9 +250,11 @@ class Bus : public MemObject virtual void init(); - Bus(const std::string &n, int bus_id, int _clock, int _width) + Bus(const std::string &n, int bus_id, int _clock, int _width, + bool responder_set) : MemObject(n), busId(bus_id), clock(_clock), width(_width), - tickNextIdle(0), busIdle(this), inRetry(false), defaultPort(NULL) + tickNextIdle(0), busIdle(this), inRetry(false), defaultPort(NULL), + responderSet(responder_set) { //Both the width and clock period must be positive if (width <= 0) -- cgit v1.2.3