1 files changed, 33 insertions, 0 deletions
diff --git a/target/microblaze/cpu-param.h b/target/microblaze/cpu-param.h
new file mode 100644
index 000000000..4d8297fa9
--- /dev/null
+++ b/target/microblaze/cpu-param.h
@@ -0,0 +1,33 @@
+/*
+ * MicroBlaze cpu parameters for qemu.
+ *
+ * Copyright (c) 2009 Edgar E. Iglesias
+ * SPDX-License-Identifier: LGPL-2.0+
+ */
+
+#ifndef MICROBLAZE_CPU_PARAM_H
+#define MICROBLAZE_CPU_PARAM_H 1
+
+/*
+ * While system mode can address up to 64 bits of address space,
+ * this is done via the lea/sea instructions, which are system-only
+ * (as they also bypass the mmu).
+ *
+ * We can improve the user-only experience by only exposing 32 bits
+ * of address space.
+ */
+#ifdef CONFIG_USER_ONLY
+#define TARGET_LONG_BITS 32
+#define TARGET_PHYS_ADDR_SPACE_BITS 32
+#define TARGET_VIRT_ADDR_SPACE_BITS 32
+#else
+#define TARGET_LONG_BITS 64
+#define TARGET_PHYS_ADDR_SPACE_BITS 64
+#define TARGET_VIRT_ADDR_SPACE_BITS 64
+#endif
+
+/* FIXME: MB uses variable pages down to 1K but linux only uses 4k.  */
+#define TARGET_PAGE_BITS 12
+#define NB_MMU_MODES 3
+
+#endif