diff --git a/hw/nvram/mac_nvram.c b/hw/nvram/mac_nvram.c
index ff5db03e6b..beec1c4e4d 100644
--- a/hw/nvram/mac_nvram.c
+++ b/hw/nvram/mac_nvram.c
@@ -30,18 +30,9 @@
 #include "migration/vmstate.h"
 #include "qemu/cutils.h"
 #include "qemu/module.h"
+#include "trace.h"
 #include <zlib.h>
 
-/* debug NVR */
-//#define DEBUG_NVR
-
-#ifdef DEBUG_NVR
-#define NVR_DPRINTF(fmt, ...)                                   \
-    do { printf("NVR: " fmt , ## __VA_ARGS__); } while (0)
-#else
-#define NVR_DPRINTF(fmt, ...)
-#endif
-
 #define DEF_SYSTEM_SIZE 0xc10
 
 /* macio style NVRAM device */
@@ -51,9 +42,8 @@ static void macio_nvram_writeb(void *opaque, hwaddr addr,
     MacIONVRAMState *s = opaque;
 
     addr = (addr >> s->it_shift) & (s->size - 1);
+    trace_macio_nvram_write(addr, value);
     s->data[addr] = value;
-    NVR_DPRINTF("writeb addr %04" HWADDR_PRIx " val %" PRIx64 "\n",
-                addr, value);
 }
 
 static uint64_t macio_nvram_readb(void *opaque, hwaddr addr,
@@ -64,8 +54,7 @@ static uint64_t macio_nvram_readb(void *opaque, hwaddr addr,
 
     addr = (addr >> s->it_shift) & (s->size - 1);
     value = s->data[addr];
-    NVR_DPRINTF("readb addr %04" HWADDR_PRIx " val %" PRIx32 "\n",
-                addr, value);
+    trace_macio_nvram_read(addr, value);
 
     return value;
 }
diff --git a/hw/nvram/trace-events b/hw/nvram/trace-events
index 0dea9260ce..e023193295 100644
--- a/hw/nvram/trace-events
+++ b/hw/nvram/trace-events
@@ -13,3 +13,7 @@ fw_cfg_add_string(uint16_t key_value, const char *key_name, const char *value) "
 fw_cfg_add_i16(uint16_t key_value, const char *key_name, uint16_t value) "key 0x%04" PRIx16 " '%s', value 0x%" PRIx16
 fw_cfg_add_i32(uint16_t key_value, const char *key_name, uint32_t value) "key 0x%04" PRIx16 " '%s', value 0x%" PRIx32
 fw_cfg_add_i64(uint16_t key_value, const char *key_name, uint64_t value) "key 0x%04" PRIx16 " '%s', value 0x%" PRIx64
+
+# mac_nvram.c
+macio_nvram_read(uint32_t addr, uint8_t val) "read addr=0x%04"PRIx32" val=0x%02x"
+macio_nvram_write(uint32_t addr, uint8_t val) "write addr=0x%04"PRIx32" val=0x%02x"