summaryrefslogtreecommitdiff
path: root/dev/baddev.hh
diff options
context:
space:
mode:
Diffstat (limited to 'dev/baddev.hh')
-rw-r--r--dev/baddev.hh65
1 files changed, 65 insertions, 0 deletions
diff --git a/dev/baddev.hh b/dev/baddev.hh
new file mode 100644
index 000000000..29fc5f44d
--- /dev/null
+++ b/dev/baddev.hh
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2003 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* @file
+ * This devices just panics when touched. For example if you have a
+ * kernel that touches the frame buffer which isn't allowed.
+ */
+
+#ifndef __BADDEV_HH__
+#define __BADDEV_HH__
+
+#include "mem/functional_mem/mmap_device.hh"
+
+/**
+ * BadDevice
+ * This device just panics when accessed. It is supposed to warn
+ * the user that the kernel they are running has unsupported
+ * options (i.e. frame buffer)
+ */
+class BadDevice : public MmapDevice
+{
+ private:
+
+ std::string devname;
+ protected:
+
+ public:
+ /**
+ * The default constructor.
+ */
+ BadDevice(const std::string &name, Addr addr, Addr mask,
+ MemoryController *mmu, const std::string &devicename);
+
+ virtual Fault read(MemReqPtr &req, uint8_t *data);
+ virtual Fault write(MemReqPtr &req, const uint8_t *data);
+
+
+};
+
+#endif // __BADDEV_HH__