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-rw-r--r--src/include/usr/vmmconst.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/include/usr/vmmconst.h b/src/include/usr/vmmconst.h
index 5036b8146..24a0617c8 100644
--- a/src/include/usr/vmmconst.h
+++ b/src/include/usr/vmmconst.h
@@ -57,7 +57,11 @@
/** Attribute Resource Provider */
// Note: Not simplified to make it easier to extract with the PNOR targeting
// image generator script
-#define VMM_VADDR_ATTR_RP (3ul * 1024ul * 1024ul * 1024ul)
+// WARNING: 4 GB range deliberately chosen so that 64-bit Hostboot pointers
+// are similar to 32 bit FSP pointers, except that the upper 32 bits are
+// set to 0x00000001. This allows both FSP and Hostboot to opearate on the same
+// targeting image
+#define VMM_VADDR_ATTR_RP (4ul * 1024ul * 1024ul * 1024ul)
/** Virtual memory block priorities */
enum BlockPriority
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