diff --git a/src/cpu/samsung/exynos5250/Kconfig b/src/cpu/samsung/exynos5250/Kconfig
index 83ff4cbe87..4e07928806 100644
--- a/src/cpu/samsung/exynos5250/Kconfig
+++ b/src/cpu/samsung/exynos5250/Kconfig
@@ -69,21 +69,21 @@ config STACK_TOP
 
 config STACK_BOTTOM
 	hex
-	default 0x02077000
+	default 0x02074000
 
 config STACK_SIZE
 	hex
-	default 0x1000
+	default 0x4000
 
 # TODO We may probably move this to board-specific implementation files instead
 # of KConfig values.
 config CBFS_CACHE_ADDRESS
 	hex "memory address to put CBFS cache data"
-	default 0x02060000
+	default 0x0205c000
 
 config CBFS_CACHE_SIZE
 	hex "size of CBFS cache data"
-	default 0x000017000
+	default 0x00018000
 
 config SYS_SDRAM_BASE
 	hex
diff --git a/src/cpu/samsung/exynos5420/Kconfig b/src/cpu/samsung/exynos5420/Kconfig
index f8bd1f66b3..c083498bb3 100644
--- a/src/cpu/samsung/exynos5420/Kconfig
+++ b/src/cpu/samsung/exynos5420/Kconfig
@@ -46,12 +46,12 @@ config CBFS_ROM_OFFSET
 # 0x0202_4400: variable length bootblock checksum header.
 # 0x0202_4410: bootblock, assume up to 32KB in size
 # 0x0203_0000: romstage, assume up to 128KB in size.
-# 0x0206_0000: cache for CBFS data.
+# 0x0205_c000: cache for CBFS data.
+# 0x0206_f000: stack bottom
+# 0x0207_3000: stack pointer
 # 0x0207_3000: shared (with kernel) page for cpu & secondary core states.
 #              the shared data is currently only <0x50 bytes so we can share
 #              this page with stack.
-# 0x0207_3100: stack bottom
-# 0x0207_4000: stack pointer
 
 config BOOTBLOCK_BASE
 	hex
@@ -63,7 +63,7 @@ config ROMSTAGE_BASE
 
 config ROMSTAGE_SIZE
 	hex
-	default 0x10000
+	default 0x20000
 
 # Stack may reside in either IRAM or DRAM. We will define it to live
 # at the top of IRAM for now.
@@ -72,25 +72,25 @@ config ROMSTAGE_SIZE
 # consecutive memory locations ending just below SP
 config STACK_TOP
 	hex
-	default 0x02074000
+	default 0x02073000
 
 config STACK_BOTTOM
 	hex
-	default 0x02073100
+	default 0x0206f000
 
 config STACK_SIZE
 	hex
-	default 0x0f00
+	default 0x4000
 
 # TODO We may probably move this to board-specific implementation files instead
 # of KConfig values.
 config CBFS_CACHE_ADDRESS
 	hex "memory address to put CBFS cache data"
-	default 0x02060000
+	default 0x0205c000
 
 config CBFS_CACHE_SIZE
 	hex "size of CBFS cache data"
-	default 0x000013000
+	default 0x00013000
 
 config SYS_SDRAM_BASE
 	hex