diff --git a/src/lib/alloc.c b/src/lib/alloc.c
index 81a29ba86..92b52756f 100644
--- a/src/lib/alloc.c
+++ b/src/lib/alloc.c
@@ -547,6 +547,10 @@ void rfree(void *ptr)
 	if (!ptr)
 		return;
 
+	/* operate only on cached addresses */
+	if (is_uncached(ptr))
+		ptr = uncache_to_cache(ptr);
+
 	/* use the heap dedicated for the selected core */
 	cpu_heap = cache_to_uncache(memmap.system + cpu_get_id());
 
diff --git a/src/platform/apollolake/include/platform/memory.h b/src/platform/apollolake/include/platform/memory.h
index 7cebe9cff..18afe2f25 100644
--- a/src/platform/apollolake/include/platform/memory.h
+++ b/src/platform/apollolake/include/platform/memory.h
@@ -193,6 +193,7 @@
 #define SRAM_ALIAS_OFFSET	0x20000000
 #define HP_SRAM_BASE		0xBE000000
 #define HP_SRAM_SIZE		0x00080000
+#define HP_SRAM_MASK		0xFF000000
 
 /* HP SRAM Heap */
 #define HEAP_HP_BUFFER_BASE	HP_SRAM_BASE
@@ -373,10 +374,11 @@
 /** \brief Manifest size (seems unused). */
 #define IMR_BOOT_LDR_MANIFEST_SIZE	0x6000
 
-#define SRAM_ALIAS_OFFSET	0x20000000
 #define uncache_to_cache(address) \
 	((__typeof__((address)))((uint32_t)((address)) + SRAM_ALIAS_OFFSET))
 #define cache_to_uncache(address) \
 	((__typeof__((address)))((uint32_t)((address)) - SRAM_ALIAS_OFFSET))
+#define is_uncached(address) \
+	(((uint32_t)(address) & HP_SRAM_MASK) != HP_SRAM_BASE)
 
 #endif
diff --git a/src/platform/baytrail/include/platform/memory.h b/src/platform/baytrail/include/platform/memory.h
index 3658e1b5e..7daba8986 100644
--- a/src/platform/baytrail/include/platform/memory.h
+++ b/src/platform/baytrail/include/platform/memory.h
@@ -158,5 +158,6 @@
 
 #define uncache_to_cache(address)	address
 #define cache_to_uncache(address)	address
+#define is_uncached(address)		0
 
 #endif
diff --git a/src/platform/cannonlake/include/platform/memory.h b/src/platform/cannonlake/include/platform/memory.h
index ad1f04a04..97f737669 100644
--- a/src/platform/cannonlake/include/platform/memory.h
+++ b/src/platform/cannonlake/include/platform/memory.h
@@ -173,6 +173,7 @@
 #define SRAM_ALIAS_OFFSET	0x20000000
 #define HP_SRAM_BASE		0xBE000000
 #define HP_SRAM_SIZE		0x002F0000
+#define HP_SRAM_MASK		0xFF000000
 
 /* HP SRAM Base */
 #define HP_SRAM_VECBASE_RESET	(HP_SRAM_BASE + 0x40000)
@@ -383,10 +384,11 @@
 #define IMR_BOOT_LDR_BSS_BASE		0xB0100000
 #define IMR_BOOT_LDR_BSS_SIZE		0x10000
 
-#define SRAM_ALIAS_OFFSET	0x20000000
 #define uncache_to_cache(address) \
 	((__typeof__((address)))((uint32_t)((address)) + SRAM_ALIAS_OFFSET))
 #define cache_to_uncache(address) \
 	((__typeof__((address)))((uint32_t)((address)) - SRAM_ALIAS_OFFSET))
+#define is_uncached(address) \
+	(((uint32_t)(address) & HP_SRAM_MASK) != HP_SRAM_BASE)
 
 #endif
diff --git a/src/platform/haswell/include/platform/memory.h b/src/platform/haswell/include/platform/memory.h
index d9187377d..9c8cb1988 100644
--- a/src/platform/haswell/include/platform/memory.h
+++ b/src/platform/haswell/include/platform/memory.h
@@ -155,5 +155,6 @@
 
 #define uncache_to_cache(address)	address
 #define cache_to_uncache(address)	address
+#define is_uncached(address)		0
 
 #endif
diff --git a/src/platform/icelake/include/platform/memory.h b/src/platform/icelake/include/platform/memory.h
index 0d83e6588..357003fcd 100644
--- a/src/platform/icelake/include/platform/memory.h
+++ b/src/platform/icelake/include/platform/memory.h
@@ -173,6 +173,7 @@
 #define SRAM_ALIAS_OFFSET	0x20000000
 #define HP_SRAM_BASE		0xBE000000
 #define HP_SRAM_SIZE		0x002F0000
+#define HP_SRAM_MASK		0xFF000000
 
 /* HP SRAM Base */
 #define HP_SRAM_VECBASE_RESET	(HP_SRAM_BASE + 0x40000)
@@ -383,10 +384,11 @@
 #define IMR_BOOT_LDR_BSS_BASE		0xB0100000
 #define IMR_BOOT_LDR_BSS_SIZE		0x10000
 
-#define SRAM_ALIAS_OFFSET	0x20000000
 #define uncache_to_cache(address) \
 	((__typeof__((address)))((uint32_t)((address)) + SRAM_ALIAS_OFFSET))
 #define cache_to_uncache(address) \
 	((__typeof__((address)))((uint32_t)((address)) - SRAM_ALIAS_OFFSET))
+#define is_uncached(address) \
+	(((uint32_t)(address) & HP_SRAM_MASK) != HP_SRAM_BASE)
 
 #endif
diff --git a/src/platform/suecreek/include/platform/memory.h b/src/platform/suecreek/include/platform/memory.h
index 6456be6e6..d109caab9 100644
--- a/src/platform/suecreek/include/platform/memory.h
+++ b/src/platform/suecreek/include/platform/memory.h
@@ -161,6 +161,7 @@
 #define SRAM_ALIAS_OFFSET	0x20000000
 #define HP_SRAM_BASE		0xBE000000
 #define HP_SRAM_SIZE		0x002F0000 /* Should be 48 * 64 - 0x300000 ?? */
+#define HP_SRAM_MASK		0xFF000000
 
 /* HP SRAM Base */
 #define HP_SRAM_VECBASE_RESET	(HP_SRAM_BASE + 0x40000)
@@ -349,10 +350,11 @@
 #define SRAM_VECBASE_RESET	(BOOT_LDR_BSS_BASE + BOOT_LDR_BSS_SIZE)
 
 //TODO: confirm mapping
-#define SRAM_ALIAS_OFFSET	0x20000000
 #define uncache_to_cache(address) \
 	((__typeof__((address)))((uint32_t)((address)) + SRAM_ALIAS_OFFSET))
 #define cache_to_uncache(address) \
 	((__typeof__((address)))((uint32_t)((address)) - SRAM_ALIAS_OFFSET))
+#define is_uncached(address) \
+	(((uint32_t)(address) & HP_SRAM_MASK) != HP_SRAM_BASE)
 
 #endif