diff --git a/src/soc/intel/xeon_sp/Kconfig b/src/soc/intel/xeon_sp/Kconfig
index e63bee5..63ced01 100644
--- a/src/soc/intel/xeon_sp/Kconfig
+++ b/src/soc/intel/xeon_sp/Kconfig
@@ -91,6 +91,10 @@
 config ECAM_MMCONF_BUS_NUMBER
 	default 256
 
+config HEAP_SIZE
+	hex
+	default 0x80000
+
 config HPET_MIN_TICKS
 	hex
 	default 0x80