diff --git a/src/mainboard/amd/bilby/Kconfig b/src/mainboard/amd/bilby/Kconfig
index 9688ffe..7b74de3 100644
--- a/src/mainboard/amd/bilby/Kconfig
+++ b/src/mainboard/amd/bilby/Kconfig
@@ -45,7 +45,6 @@
 	default 0x164e	if BILBY_SMSC_SIO1036_BASE_164E
 
 config CBFS_SIZE
-	hex
 	default 0xfef000 # Maximum size for the Bilby FMAP
 
 config MAINBOARD_DIR
diff --git a/src/mainboard/amd/mandolin/Kconfig b/src/mainboard/amd/mandolin/Kconfig
index 1e933c8..c592548 100644
--- a/src/mainboard/amd/mandolin/Kconfig
+++ b/src/mainboard/amd/mandolin/Kconfig
@@ -47,7 +47,6 @@
 	default 0x164e	if SMSC_SIO1036_BASE_164E
 
 config CBFS_SIZE
-	hex
 	default 0x7cf000 if BOARD_AMD_MANDOLIN # Maximum size for the Mandolin FMAP
 	default 0xfcf000 if BOARD_AMD_CEREME # Maximum size for the Cereme FMAP
 
diff --git a/src/mainboard/asrock/b85m_pro4/Kconfig b/src/mainboard/asrock/b85m_pro4/Kconfig
index f55cf09..f33bf34 100644
--- a/src/mainboard/asrock/b85m_pro4/Kconfig
+++ b/src/mainboard/asrock/b85m_pro4/Kconfig
@@ -19,7 +19,6 @@
 	select SUPERIO_NUVOTON_NCT6776
 
 config CBFS_SIZE
-	hex
 	default 0x200000
 
 config MAINBOARD_DIR
diff --git a/src/mainboard/asrock/h81m-hds/Kconfig b/src/mainboard/asrock/h81m-hds/Kconfig
index 4e9583c..4741f28 100644
--- a/src/mainboard/asrock/h81m-hds/Kconfig
+++ b/src/mainboard/asrock/h81m-hds/Kconfig
@@ -21,7 +21,6 @@
 	select SUPERIO_NUVOTON_NCT6776
 
 config CBFS_SIZE
-	hex
 	default 0x200000
 
 config MAINBOARD_DIR
diff --git a/src/mainboard/clevo/cml-u/Kconfig b/src/mainboard/clevo/cml-u/Kconfig
index dfec9e1..f594e4e 100644
--- a/src/mainboard/clevo/cml-u/Kconfig
+++ b/src/mainboard/clevo/cml-u/Kconfig
@@ -42,7 +42,6 @@
 	default "variants/\$(CONFIG_VARIANT_DIR)/devicetree.cb"
 
 config CBFS_SIZE
-	hex
 	default 0xc00000 if BOARD_CLEVO_L140CU_BASE
 
 config CONSOLE_POST
diff --git a/src/mainboard/clevo/kbl-u/Kconfig b/src/mainboard/clevo/kbl-u/Kconfig
index 07f6fbb..9ef3f88 100644
--- a/src/mainboard/clevo/kbl-u/Kconfig
+++ b/src/mainboard/clevo/kbl-u/Kconfig
@@ -44,7 +44,6 @@
 	default "N130WU" if BOARD_CLEVO_N130WU
 
 config CBFS_SIZE
-	hex
 	default 0x600000 if BOARD_CLEVO_N130WU
 
 config DEVICETREE
diff --git a/src/mainboard/dell/optiplex_9010/Kconfig b/src/mainboard/dell/optiplex_9010/Kconfig
index 597d481..1f505b0 100644
--- a/src/mainboard/dell/optiplex_9010/Kconfig
+++ b/src/mainboard/dell/optiplex_9010/Kconfig
@@ -37,7 +37,6 @@
 	default 2
 
 config CBFS_SIZE
-	hex
 	default 0x600000
 
 config INCLUDE_SMSC_SCH5545_EC_FW
diff --git a/src/mainboard/facebook/fbg1701/Kconfig b/src/mainboard/facebook/fbg1701/Kconfig
index 5f5521b..7426416 100644
--- a/src/mainboard/facebook/fbg1701/Kconfig
+++ b/src/mainboard/facebook/fbg1701/Kconfig
@@ -62,7 +62,6 @@
 	default "FBG-1701"
 
 config CBFS_SIZE
-	hex
 	default 0x00600000
 
 config MRC_SETTINGS_CACHE_SIZE
diff --git a/src/mainboard/facebook/monolith/Kconfig b/src/mainboard/facebook/monolith/Kconfig
index 02c2e09..d592f60 100644
--- a/src/mainboard/facebook/monolith/Kconfig
+++ b/src/mainboard/facebook/monolith/Kconfig
@@ -14,7 +14,6 @@
 	select VPD
 
 config CBFS_SIZE
-	hex
 	default 0x00900000
 
 config IRQ_SLOT_COUNT
diff --git a/src/mainboard/google/cyan/Kconfig b/src/mainboard/google/cyan/Kconfig
index 1e8f8c2..5511d0a 100644
--- a/src/mainboard/google/cyan/Kconfig
+++ b/src/mainboard/google/cyan/Kconfig
@@ -74,7 +74,6 @@
 	default "variants/\$(CONFIG_VARIANT_DIR)/overridetree.cb"
 
 config CBFS_SIZE
-	hex
 	default 0x200000
 
 config MAINBOARD_SMBIOS_MANUFACTURER
diff --git a/src/mainboard/google/veyron/Kconfig b/src/mainboard/google/veyron/Kconfig
index 2451995..00094cd1 100644
--- a/src/mainboard/google/veyron/Kconfig
+++ b/src/mainboard/google/veyron/Kconfig
@@ -75,7 +75,6 @@
 	default 0
 
 config CBFS_SIZE
-	hex
 	default 0x100000 if CHROMEOS
 	default ROM_SIZE
 
diff --git a/src/mainboard/intel/dcp847ske/Kconfig b/src/mainboard/intel/dcp847ske/Kconfig
index 9bf9e52..13e176a 100644
--- a/src/mainboard/intel/dcp847ske/Kconfig
+++ b/src/mainboard/intel/dcp847ske/Kconfig
@@ -50,7 +50,6 @@
 	default 2
 
 config CBFS_SIZE
-	hex
 	default 0x00640000
 
 config MAINBOARD_SMBIOS_MANUFACTURER
diff --git a/src/mainboard/intel/strago/Kconfig b/src/mainboard/intel/strago/Kconfig
index 4ea5885..1db86dc2 100644
--- a/src/mainboard/intel/strago/Kconfig
+++ b/src/mainboard/intel/strago/Kconfig
@@ -48,7 +48,6 @@
 	  in soc/intel/braswell/Makefile.inc as 8086,22b1
 
 config CBFS_SIZE
-	hex
 	default 0x200000
 
 endif # BOARD_INTEL_STRAGO
diff --git a/src/mainboard/kontron/bsl6/Kconfig b/src/mainboard/kontron/bsl6/Kconfig
index dd8f4fa..1592d55 100644
--- a/src/mainboard/kontron/bsl6/Kconfig
+++ b/src/mainboard/kontron/bsl6/Kconfig
@@ -51,7 +51,6 @@
 	default "variants/\$(CONFIG_VARIANT_DIR)/overridetree.cb"
 
 config CBFS_SIZE
-	hex
 	default 0x600000 if BOARD_SIEMENS_BOXER26
 
 config DIMM_MAX
diff --git a/src/mainboard/lenovo/t400/Kconfig b/src/mainboard/lenovo/t400/Kconfig
index 809ea45..a7e3922 100644
--- a/src/mainboard/lenovo/t400/Kconfig
+++ b/src/mainboard/lenovo/t400/Kconfig
@@ -73,7 +73,6 @@
 	default 2
 
 config CBFS_SIZE
-	hex
 	default 0x200000
 
 config PS2K_EISAID
diff --git a/src/mainboard/lenovo/x200/Kconfig b/src/mainboard/lenovo/x200/Kconfig
index 896795b..bd25936 100644
--- a/src/mainboard/lenovo/x200/Kconfig
+++ b/src/mainboard/lenovo/x200/Kconfig
@@ -65,7 +65,6 @@
 	default 2
 
 config CBFS_SIZE
-	hex
 	default 0x200000
 
 config PS2K_EISAID
diff --git a/src/mainboard/libretrend/lt1000/Kconfig b/src/mainboard/libretrend/lt1000/Kconfig
index bfd532a..2610e8b 100644
--- a/src/mainboard/libretrend/lt1000/Kconfig
+++ b/src/mainboard/libretrend/lt1000/Kconfig
@@ -41,7 +41,6 @@
 	default 512
 
 config CBFS_SIZE
-	hex
 	default 0x600000
 
 config USE_PM_ACPI_TIMER
diff --git a/src/mainboard/msi/ms7707/Kconfig b/src/mainboard/msi/ms7707/Kconfig
index 93a43f9..bc4d657 100644
--- a/src/mainboard/msi/ms7707/Kconfig
+++ b/src/mainboard/msi/ms7707/Kconfig
@@ -30,7 +30,6 @@
 	default 2
 
 config CBFS_SIZE
-	hex
 	default 0x200000
 
 endif
diff --git a/src/mainboard/portwell/m107/Kconfig b/src/mainboard/portwell/m107/Kconfig
index c4a903d..4fbe7b8 100644
--- a/src/mainboard/portwell/m107/Kconfig
+++ b/src/mainboard/portwell/m107/Kconfig
@@ -42,7 +42,6 @@
 	default "PQ7-M107"
 
 config CBFS_SIZE
-	hex
 	default 0x00600000
 
 config MRC_SETTINGS_CACHE_SIZE
diff --git a/src/mainboard/prodrive/hermes/Kconfig b/src/mainboard/prodrive/hermes/Kconfig
index ac497e6..ef42889 100644
--- a/src/mainboard/prodrive/hermes/Kconfig
+++ b/src/mainboard/prodrive/hermes/Kconfig
@@ -67,7 +67,6 @@
 	default n
 
 config CBFS_SIZE
-	hex
 	default 0x900000
 
 endif # BOARD_PRODRIVE_HERMES_BASEBOARD
diff --git a/src/mainboard/protectli/vault_bsw/Kconfig b/src/mainboard/protectli/vault_bsw/Kconfig
index 7bbdcd2..5d576bf 100644
--- a/src/mainboard/protectli/vault_bsw/Kconfig
+++ b/src/mainboard/protectli/vault_bsw/Kconfig
@@ -49,7 +49,6 @@
 	default 4 if BOARD_PROTECTLI_FW4B
 
 config CBFS_SIZE
-	hex
 	default 0x500000
 
 config PXE_ROM_ID
diff --git a/src/mainboard/protectli/vault_kbl/Kconfig b/src/mainboard/protectli/vault_kbl/Kconfig
index 7aa78aa..9f39549 100644
--- a/src/mainboard/protectli/vault_kbl/Kconfig
+++ b/src/mainboard/protectli/vault_kbl/Kconfig
@@ -48,7 +48,6 @@
 	default "8086,150c"
 
 config CBFS_SIZE
-	hex
 	default 0x600000
 
 config USE_PM_ACPI_TIMER
diff --git a/src/mainboard/purism/librem_cnl/Kconfig b/src/mainboard/purism/librem_cnl/Kconfig
index 5763a19..58c576c 100644
--- a/src/mainboard/purism/librem_cnl/Kconfig
+++ b/src/mainboard/purism/librem_cnl/Kconfig
@@ -40,7 +40,6 @@
 	default "variants/\$(CONFIG_VARIANT_DIR)/devicetree.cb"
 
 config CBFS_SIZE
-	hex
 	default 0x800000 if BOARD_PURISM_LIBREM_MINI
 	default 0xA00000 if BOARD_PURISM_LIBREM_MINI_V2
 	default 0x900000 if BOARD_PURISM_LIBREM_14
diff --git a/src/mainboard/purism/librem_skl/Kconfig b/src/mainboard/purism/librem_skl/Kconfig
index c59f7fa..84dc896 100644
--- a/src/mainboard/purism/librem_skl/Kconfig
+++ b/src/mainboard/purism/librem_skl/Kconfig
@@ -66,7 +66,6 @@
 	default 512
 
 config CBFS_SIZE
-	hex
 	default 0xe00000
 
 # This platform has limited means to display POST codes
diff --git a/src/mainboard/roda/rk9/Kconfig b/src/mainboard/roda/rk9/Kconfig
index f45f255..ef6feeb 100644
--- a/src/mainboard/roda/rk9/Kconfig
+++ b/src/mainboard/roda/rk9/Kconfig
@@ -26,7 +26,6 @@
 	default "RK9"
 
 config CBFS_SIZE
-	hex
 	default ROM_SIZE
 
 endif # BOARD_RODA_RK9
diff --git a/src/mainboard/siemens/chili/Kconfig b/src/mainboard/siemens/chili/Kconfig
index 54e8f4f..5c35137 100644
--- a/src/mainboard/siemens/chili/Kconfig
+++ b/src/mainboard/siemens/chili/Kconfig
@@ -60,7 +60,6 @@
 	default "src/mainboard/\$(MAINBOARDDIR)/variants/\$(CONFIG_VARIANT_DIR)/data.vbt"
 
 config CBFS_SIZE
-	hex
 	default 0xb00000
 
 config POST_DEVICE
diff --git a/src/mainboard/supermicro/x10slm-f/Kconfig b/src/mainboard/supermicro/x10slm-f/Kconfig
index 5e09349..157d7e2 100644
--- a/src/mainboard/supermicro/x10slm-f/Kconfig
+++ b/src/mainboard/supermicro/x10slm-f/Kconfig
@@ -17,7 +17,6 @@
 	select SUPERIO_NUVOTON_NCT6776
 
 config CBFS_SIZE
-	hex
 	default 0xb00000
 
 config MAINBOARD_DIR
diff --git a/src/mainboard/supermicro/x11-lga1151-series/Kconfig b/src/mainboard/supermicro/x11-lga1151-series/Kconfig
index b2497e5..51b48ec 100644
--- a/src/mainboard/supermicro/x11-lga1151-series/Kconfig
+++ b/src/mainboard/supermicro/x11-lga1151-series/Kconfig
@@ -69,7 +69,6 @@
 	default y
 
 config CBFS_SIZE
-	hex
 	default 0xb00000
 
 config IRQ_SLOT_COUNT
diff --git a/src/mainboard/supermicro/x9scl/Kconfig b/src/mainboard/supermicro/x9scl/Kconfig
index 6261726..96dc657 100644
--- a/src/mainboard/supermicro/x9scl/Kconfig
+++ b/src/mainboard/supermicro/x9scl/Kconfig
@@ -42,7 +42,6 @@
 	default "8086:10d3"
 
 config CBFS_SIZE
-	hex
 	default 0x400000
 
 #config SUPERMICRO_BOARDID
diff --git a/src/mainboard/system76/gaze15/Kconfig b/src/mainboard/system76/gaze15/Kconfig
index aefacdd..7d3d9a6 100644
--- a/src/mainboard/system76/gaze15/Kconfig
+++ b/src/mainboard/system76/gaze15/Kconfig
@@ -37,7 +37,6 @@
 	default "gaze15"
 
 config CBFS_SIZE
-	hex
 	default 0xA00000
 
 config CONSOLE_POST
diff --git a/src/mainboard/system76/lemp9/Kconfig b/src/mainboard/system76/lemp9/Kconfig
index 675b738..b75a55d 100644
--- a/src/mainboard/system76/lemp9/Kconfig
+++ b/src/mainboard/system76/lemp9/Kconfig
@@ -38,7 +38,6 @@
 	default "lemp9"
 
 config CBFS_SIZE
-	hex
 	default 0xc00000
 
 config CONSOLE_POST
diff --git a/src/mainboard/system76/oryp5/Kconfig b/src/mainboard/system76/oryp5/Kconfig
index 7ff1424..dd993f7 100644
--- a/src/mainboard/system76/oryp5/Kconfig
+++ b/src/mainboard/system76/oryp5/Kconfig
@@ -38,7 +38,6 @@
 	default "oryp5"
 
 config CBFS_SIZE
-	hex
 	default 0xA00000
 
 config CONSOLE_POST
diff --git a/src/mainboard/system76/oryp6/Kconfig b/src/mainboard/system76/oryp6/Kconfig
index 8419e65..1075aeb 100644
--- a/src/mainboard/system76/oryp6/Kconfig
+++ b/src/mainboard/system76/oryp6/Kconfig
@@ -38,7 +38,6 @@
 	default "oryp6"
 
 config CBFS_SIZE
-	hex
 	default 0xA00000
 
 config CONSOLE_POST
diff --git a/src/mainboard/system76/whl-u/Kconfig b/src/mainboard/system76/whl-u/Kconfig
index a734547..dd27f22 100644
--- a/src/mainboard/system76/whl-u/Kconfig
+++ b/src/mainboard/system76/whl-u/Kconfig
@@ -50,7 +50,6 @@
 	default "darp5" if BOARD_SYSTEM76_DARP5
 
 config CBFS_SIZE
-	hex
 	default 0xA00000
 
 config CONSOLE_POST
diff --git a/src/northbridge/intel/gm45/Kconfig b/src/northbridge/intel/gm45/Kconfig
index daf96aa..e3675db 100644
--- a/src/northbridge/intel/gm45/Kconfig
+++ b/src/northbridge/intel/gm45/Kconfig
@@ -17,7 +17,6 @@
 	select VBOOT_STARTS_IN_BOOTBLOCK
 
 config CBFS_SIZE
-	hex
 	default 0x100000
 
 config VGA_BIOS_ID
diff --git a/src/northbridge/intel/ironlake/Kconfig b/src/northbridge/intel/ironlake/Kconfig
index 4fe5dd173..9fb7769 100644
--- a/src/northbridge/intel/ironlake/Kconfig
+++ b/src/northbridge/intel/ironlake/Kconfig
@@ -18,7 +18,6 @@
 	select TPM_STARTUP_IGNORE_POSTINIT
 
 config CBFS_SIZE
-	hex
 	default 0x100000
 
 config VGA_BIOS_ID
diff --git a/src/northbridge/intel/sandybridge/Kconfig b/src/northbridge/intel/sandybridge/Kconfig
index 501ca9f..ae24690 100644
--- a/src/northbridge/intel/sandybridge/Kconfig
+++ b/src/northbridge/intel/sandybridge/Kconfig
@@ -77,7 +77,6 @@
 	  Handle with care!
 
 config CBFS_SIZE
-	hex
 	default 0x100000
 
 config VGA_BIOS_ID
diff --git a/src/northbridge/intel/x4x/Kconfig b/src/northbridge/intel/x4x/Kconfig
index 476caf5..8eda090 100644
--- a/src/northbridge/intel/x4x/Kconfig
+++ b/src/northbridge/intel/x4x/Kconfig
@@ -15,7 +15,6 @@
 	select HAVE_EXP_X86_64_SUPPORT
 
 config CBFS_SIZE
-	hex
 	default 0x100000 if !SOUTHBRIDGE_INTEL_I82801GX
 
 config VGA_BIOS_ID
diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig
index 743be57..f77b4c3 100644
--- a/src/soc/intel/alderlake/Kconfig
+++ b/src/soc/intel/alderlake/Kconfig
@@ -258,7 +258,6 @@
 	select VBOOT_X86_SHA256_ACCELERATION
 
 config CBFS_SIZE
-	hex
 	default 0x200000
 
 config PRERAM_CBMEM_CONSOLE_SIZE
diff --git a/src/soc/intel/cannonlake/Kconfig b/src/soc/intel/cannonlake/Kconfig
index 8f2f9d2..f2a316a 100644
--- a/src/soc/intel/cannonlake/Kconfig
+++ b/src/soc/intel/cannonlake/Kconfig
@@ -266,7 +266,6 @@
 	select VBOOT_VBNV_CMOS_BACKUP_TO_FLASH
 
 config CBFS_SIZE
-	hex
 	default 0x200000
 
 config MB_HAS_ACTIVE_HIGH_SD_PWR_ENABLE
diff --git a/src/soc/intel/elkhartlake/Kconfig b/src/soc/intel/elkhartlake/Kconfig
index a08c4e0..7242e6e 100644
--- a/src/soc/intel/elkhartlake/Kconfig
+++ b/src/soc/intel/elkhartlake/Kconfig
@@ -186,7 +186,6 @@
 	select VBOOT_VBNV_CMOS_BACKUP_TO_FLASH
 
 config CBFS_SIZE
-	hex
 	default 0x200000
 
 config FSP_HEADER_PATH
diff --git a/src/soc/intel/icelake/Kconfig b/src/soc/intel/icelake/Kconfig
index 1396460..eac3c92 100644
--- a/src/soc/intel/icelake/Kconfig
+++ b/src/soc/intel/icelake/Kconfig
@@ -172,7 +172,6 @@
 	select VBOOT_VBNV_CMOS_BACKUP_TO_FLASH
 
 config CBFS_SIZE
-	hex
 	default 0x200000
 
 config FSP_HEADER_PATH
diff --git a/src/soc/intel/jasperlake/Kconfig b/src/soc/intel/jasperlake/Kconfig
index 4d82739..7b2d13e 100644
--- a/src/soc/intel/jasperlake/Kconfig
+++ b/src/soc/intel/jasperlake/Kconfig
@@ -183,7 +183,6 @@
 	select VBOOT_VBNV_CMOS_BACKUP_TO_FLASH
 
 config CBFS_SIZE
-	hex
 	default 0x200000
 
 config FSP_HEADER_PATH
diff --git a/src/soc/intel/quark/Kconfig b/src/soc/intel/quark/Kconfig
index 497322f..2d09f51 100644
--- a/src/soc/intel/quark/Kconfig
+++ b/src/soc/intel/quark/Kconfig
@@ -151,7 +151,6 @@
 #####
 
 config CBFS_SIZE
-	hex
 	default 0x200000
 	help
 	  Specify the size of the coreboot file system in the read-only (recovery)
diff --git a/src/soc/intel/skylake/Kconfig b/src/soc/intel/skylake/Kconfig
index 9136a5f..35628ef 100644
--- a/src/soc/intel/skylake/Kconfig
+++ b/src/soc/intel/skylake/Kconfig
@@ -113,7 +113,6 @@
 	select VBOOT_VBNV_CMOS_BACKUP_TO_FLASH
 
 config CBFS_SIZE
-	hex
 	default 0x200000
 
 config DCACHE_RAM_BASE
diff --git a/src/soc/intel/tigerlake/Kconfig b/src/soc/intel/tigerlake/Kconfig
index f3854da..d506800 100644
--- a/src/soc/intel/tigerlake/Kconfig
+++ b/src/soc/intel/tigerlake/Kconfig
@@ -217,7 +217,6 @@
 	select VBOOT_VBNV_CMOS_BACKUP_TO_FLASH
 
 config CBFS_SIZE
-	hex
 	default 0x200000
 
 config FSP_TYPE_IOT
diff --git a/src/southbridge/intel/common/firmware/Kconfig b/src/southbridge/intel/common/firmware/Kconfig
index a1026e8..ab0373a 100644
--- a/src/southbridge/intel/common/firmware/Kconfig
+++ b/src/southbridge/intel/common/firmware/Kconfig
@@ -173,7 +173,6 @@
 endchoice
 
 config CBFS_SIZE
-	hex
 	default 0x100000
 	help
 	  Reduce CBFS size to give room to the IFD blobs.