diff --git a/target/linux/brcm47xx/config-3.18 b/target/linux/brcm47xx/config-3.18
index 82198ea989..1703c36d78 100644
--- a/target/linux/brcm47xx/config-3.18
+++ b/target/linux/brcm47xx/config-3.18
@@ -10,7 +10,6 @@ CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
 CONFIG_ARCH_SUSPEND_POSSIBLE=y
 CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
 CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
-# CONFIG_AUDIT_ARCH_COMPAT_GENERIC is not set
 CONFIG_B53=y
 # CONFIG_B53_MMAP_DRIVER is not set
 CONFIG_B53_PHY_DRIVER=y
@@ -49,6 +48,7 @@ CONFIG_CPU_MIPS32_R1=y
 # CONFIG_CPU_MIPS32_R2 is not set
 CONFIG_CPU_MIPSR1=y
 CONFIG_CPU_MIPSR2_IRQ_VI=y
+CONFIG_CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS=y
 CONFIG_CPU_R4K_CACHE_TLB=y
 CONFIG_CPU_R4K_FPU=y
 CONFIG_CPU_SUPPORTS_32BIT_KERNEL=y
@@ -116,7 +116,6 @@ CONFIG_MIPS=y
 # CONFIG_MIPS_HUGE_TLB_SUPPORT is not set
 CONFIG_MIPS_L1_CACHE_SHIFT=5
 # CONFIG_MIPS_MACHINE is not set
-# CONFIG_MIPS_PARAVIRT is not set
 CONFIG_MODULES_USE_ELF_REL=y
 CONFIG_MTD_BCM47XXSFLASH=y
 CONFIG_MTD_BCM47XX_PARTS=y
@@ -140,7 +139,6 @@ CONFIG_PHYLIB=y
 # CONFIG_SCSI_DMA is not set
 CONFIG_SERIAL_8250_EXTENDED=y
 CONFIG_SERIAL_8250_SHARE_IRQ=y
-CONFIG_SERIAL_EARLYCON=y
 CONFIG_SSB=y
 CONFIG_SSB_B43_PCI_BRIDGE=y
 CONFIG_SSB_BLOCKIO=y