diff --git a/toolchain/toolchain-external/toolchain-external-codesourcery-arm/Config.in b/toolchain/toolchain-external/toolchain-external-codesourcery-arm/Config.in
index 037985b06a..3cdfc860ab 100644
--- a/toolchain/toolchain-external/toolchain-external-codesourcery-arm/Config.in
+++ b/toolchain/toolchain-external/toolchain-external-codesourcery-arm/Config.in
@@ -3,6 +3,8 @@ config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM
 	depends on BR2_arm
 	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
 	depends on BR2_ARM_EABI
+	# Unsupported ARM cores
+	depends on !BR2_cortex_a12 && !BR2_cortex_a17
 	depends on !BR2_STATIC_LIBS
 	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
 	select BR2_TOOLCHAIN_HAS_SSP