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-rw-r--r--arch/sandbox/include/asm/io.h10
-rw-r--r--include/configs/sandbox.h3
2 files changed, 13 insertions, 0 deletions
diff --git a/arch/sandbox/include/asm/io.h b/arch/sandbox/include/asm/io.h
index 7956041171..895fcb872f 100644
--- a/arch/sandbox/include/asm/io.h
+++ b/arch/sandbox/include/asm/io.h
@@ -40,4 +40,14 @@ static inline void unmap_sysmem(const void *vaddr)
/* Map from a pointer to our RAM buffer */
phys_addr_t map_to_sysmem(const void *ptr);
+/* Define nops for sandbox I/O access */
+#define readb(addr) 0
+#define readw(addr) 0
+#define readl(addr) 0
+#define writeb(v, addr)
+#define writew(v, addr)
+#define writel(v, addr)
+
+#include <iotrace.h>
+
#endif
diff --git a/include/configs/sandbox.h b/include/configs/sandbox.h
index a145094042..12b69d9a24 100644
--- a/include/configs/sandbox.h
+++ b/include/configs/sandbox.h
@@ -16,6 +16,9 @@
#endif
+#define CONFIG_IO_TRACE
+#define CONFIG_CMD_IOTRACE
+
#define CONFIG_SYS_TIMER_RATE 1000000
#define CONFIG_BOOTSTAGE
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