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-rw-r--r--src/cpu/x86/16bit/entry16.inc3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/cpu/x86/16bit/entry16.inc b/src/cpu/x86/16bit/entry16.inc
index 55d9bd97e2..2a9f8c55e9 100644
--- a/src/cpu/x86/16bit/entry16.inc
+++ b/src/cpu/x86/16bit/entry16.inc
@@ -29,7 +29,8 @@
#include <arch/rom_segs.h>
-#if IS_ENABLED(CONFIG_SIPI_VECTOR_IN_ROM)
+#if IS_ENABLED(CONFIG_C_ENVIRONMENT_BOOTBLOCK) || \
+ IS_ENABLED(CONFIG_SIPI_VECTOR_IN_ROM)
/* Symbol _start16bit must be aligned to 4kB to start AP CPUs with
* Startup IPI message without RAM.
*/