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-rw-r--r--src/southbridge/amd/pi/hudson/Makefile.inc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/southbridge/amd/pi/hudson/Makefile.inc b/src/southbridge/amd/pi/hudson/Makefile.inc
index 215a5a12bd..5eac024aa8 100644
--- a/src/southbridge/amd/pi/hudson/Makefile.inc
+++ b/src/southbridge/amd/pi/hudson/Makefile.inc
@@ -162,7 +162,7 @@ INTERMEDIATE+=add_amdfw
add_amdfw: $(obj)/coreboot.pre $(obj)/amdfw.rom
printf " DD Adding AMD Firmware\n"
- dd if=$(obj)/amdfw.rom \
+ flock $< dd if=$(obj)/amdfw.rom \
of=$(obj)/coreboot.pre conv=notrunc bs=1 seek=131072 >/dev/null 2>&1
else # ifeq ($(CONFIG_AMDFW_OUTSIDE_CBFS),y)