diff --git a/arch/arc/config.mk b/arch/arc/config.mk
index a3b8df7..e408800 100644
--- a/arch/arc/config.mk
+++ b/arch/arc/config.mk
@@ -21,7 +21,7 @@ ifeq ($(CROSS_COMPILE),)
 CROSS_COMPILE := $(ARC_CROSS_COMPILE)
 endif
 
-PLATFORM_CPPFLAGS += -ffixed-r25 -D__ARC__ -DCONFIG_ARC -gdwarf-2
+PLATFORM_CPPFLAGS += -ffixed-r25 -D__ARC__ -gdwarf-2
 
 # Needed for relocation
 LDFLAGS_FINAL += -pie
diff --git a/arch/arm/config.mk b/arch/arm/config.mk
index 66ecc2e..31e042a 100644
--- a/arch/arm/config.mk
+++ b/arch/arm/config.mk
@@ -22,7 +22,7 @@ PLATFORM_RELFLAGS += $(call cc-option, -msoft-float) \
 # Support generic board on ARM
 __HAVE_ARCH_GENERIC_BOARD := y
 
-PLATFORM_CPPFLAGS += -DCONFIG_ARM -D__ARM__
+PLATFORM_CPPFLAGS += -D__ARM__
 
 # Choose between ARM/Thumb instruction sets
 ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
diff --git a/arch/avr32/config.mk b/arch/avr32/config.mk
index 28a371c..469185e 100644
--- a/arch/avr32/config.mk
+++ b/arch/avr32/config.mk
@@ -9,7 +9,6 @@ ifeq ($(CROSS_COMPILE),)
 CROSS_COMPILE := avr32-linux-
 endif
 
-PLATFORM_CPPFLAGS += -DCONFIG_AVR32
 CONFIG_STANDALONE_LOAD_ADDR ?= 0x00000000
 
 PLATFORM_RELFLAGS	+= -ffixed-r5 -fPIC -mno-init-got -mrelax
diff --git a/arch/blackfin/config.mk b/arch/blackfin/config.mk
index c9927b8..135119c 100644
--- a/arch/blackfin/config.mk
+++ b/arch/blackfin/config.mk
@@ -23,7 +23,6 @@ endif
 CONFIG_BFIN_BOOT_MODE := $(strip $(CONFIG_BFIN_BOOT_MODE:"%"=%))
 
 PLATFORM_RELFLAGS += -ffixed-P3 -fomit-frame-pointer -mno-fdpic
-PLATFORM_CPPFLAGS += -DCONFIG_BLACKFIN
 
 LDFLAGS_FINAL += --gc-sections
 LDFLAGS += -m elf32bfin
diff --git a/arch/m68k/config.mk b/arch/m68k/config.mk
index 33b3d51..3b3a7e8 100644
--- a/arch/m68k/config.mk
+++ b/arch/m68k/config.mk
@@ -11,7 +11,7 @@ endif
 
 CONFIG_STANDALONE_LOAD_ADDR ?= 0x20000
 
-PLATFORM_CPPFLAGS += -DCONFIG_M68K -D__M68K__
+PLATFORM_CPPFLAGS += -D__M68K__
 PLATFORM_LDFLAGS  += -n
 PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
 PLATFORM_RELFLAGS += -ffixed-d7 -msep-data
diff --git a/arch/mips/config.mk b/arch/mips/config.mk
index f4a234a..a2d07af 100644
--- a/arch/mips/config.mk
+++ b/arch/mips/config.mk
@@ -25,7 +25,7 @@ endif
 # Default to EB if no endianess is configured
 ENDIANNESS ?= -EB
 
-PLATFORM_CPPFLAGS += -DCONFIG_MIPS -D__MIPS__
+PLATFORM_CPPFLAGS += -D__MIPS__
 
 __HAVE_ARCH_GENERIC_BOARD := y
 
diff --git a/arch/nds32/config.mk b/arch/nds32/config.mk
index 1024852..5ac9f90 100644
--- a/arch/nds32/config.mk
+++ b/arch/nds32/config.mk
@@ -17,6 +17,6 @@ CONFIG_STANDALONE_LOAD_ADDR = 0x300000 \
 
 PLATFORM_RELFLAGS	+= -fno-strict-aliasing -fno-common -mrelax
 PLATFORM_RELFLAGS	+= -gdwarf-2
-PLATFORM_CPPFLAGS	+= -DCONFIG_NDS32 -D__nds32__ -G0 -ffixed-10 -fpie
+PLATFORM_CPPFLAGS	+= -D__nds32__ -G0 -ffixed-10 -fpie
 
 LDFLAGS_u-boot		= --gc-sections --relax
diff --git a/arch/nios2/config.mk b/arch/nios2/config.mk
index 65a5a40..82bd887 100644
--- a/arch/nios2/config.mk
+++ b/arch/nios2/config.mk
@@ -12,7 +12,7 @@ endif
 
 CONFIG_STANDALONE_LOAD_ADDR ?= 0x02000000
 
-PLATFORM_CPPFLAGS += -DCONFIG_NIOS2 -D__NIOS2__
+PLATFORM_CPPFLAGS += -D__NIOS2__
 PLATFORM_CPPFLAGS += -G0
 
 LDFLAGS_FINAL += --gc-sections
diff --git a/arch/openrisc/config.mk b/arch/openrisc/config.mk
index 9902b9a..cd95f24 100644
--- a/arch/openrisc/config.mk
+++ b/arch/openrisc/config.mk
@@ -11,6 +11,6 @@ endif
 
 # r10 used for global object pointer, already set in OR32 GCC but just to be
 # clear
-PLATFORM_CPPFLAGS += -DCONFIG_OPENRISC -D__OR1K__ -ffixed-r10
+PLATFORM_CPPFLAGS += -D__OR1K__ -ffixed-r10
 
 CONFIG_STANDALONE_LOAD_ADDR ?= 0x40000
diff --git a/arch/powerpc/config.mk b/arch/powerpc/config.mk
index fb7096e..6329b6c 100644
--- a/arch/powerpc/config.mk
+++ b/arch/powerpc/config.mk
@@ -13,7 +13,7 @@ CONFIG_STANDALONE_LOAD_ADDR ?= 0x40000
 LDFLAGS_FINAL += --gc-sections
 PLATFORM_RELFLAGS += -fpic -mrelocatable -ffunction-sections -fdata-sections \
 								-meabi
-PLATFORM_CPPFLAGS += -DCONFIG_PPC -D__powerpc__ -ffixed-r2
+PLATFORM_CPPFLAGS += -D__powerpc__ -ffixed-r2
 PLATFORM_LDFLAGS  += -n
 
 # Support generic board on PPC
diff --git a/arch/sandbox/config.mk b/arch/sandbox/config.mk
index c3f889f..e38a44b 100644
--- a/arch/sandbox/config.mk
+++ b/arch/sandbox/config.mk
@@ -1,7 +1,7 @@
 # Copyright (c) 2011 The Chromium OS Authors.
 # SPDX-License-Identifier:	GPL-2.0+
 
-PLATFORM_CPPFLAGS += -DCONFIG_SANDBOX -D__SANDBOX__ -U_FORTIFY_SOURCE
+PLATFORM_CPPFLAGS += -D__SANDBOX__ -U_FORTIFY_SOURCE
 PLATFORM_CPPFLAGS += -DCONFIG_ARCH_MAP_SYSMEM -DCONFIG_SYS_GENERIC_BOARD
 PLATFORM_LIBS += -lrt
 
diff --git a/arch/sparc/config.mk b/arch/sparc/config.mk
index be59f58..196d28a 100644
--- a/arch/sparc/config.mk
+++ b/arch/sparc/config.mk
@@ -14,4 +14,4 @@ gcclibdir := $(shell dirname `$(CC) -print-libgcc-file-name`)
 CONFIG_STANDALONE_LOAD_ADDR ?= 0x00000000 -L $(gcclibdir) \
 			       -T $(srctree)/examples/standalone/sparc.lds
 
-PLATFORM_CPPFLAGS += -DCONFIG_SPARC -D__sparc__
+PLATFORM_CPPFLAGS += -D__sparc__
diff --git a/arch/x86/cpu/config.mk b/arch/x86/cpu/config.mk
index c1568cac..bf97291 100644
--- a/arch/x86/cpu/config.mk
+++ b/arch/x86/cpu/config.mk
@@ -7,7 +7,7 @@
 
 CROSS_COMPILE ?= i386-linux-
 
-PLATFORM_CPPFLAGS += -DCONFIG_X86 -D__I386__ -march=i386 -Werror
+PLATFORM_CPPFLAGS += -D__I386__ -march=i386 -Werror
 
 # DO NOT MODIFY THE FOLLOWING UNLESS YOU REALLY KNOW WHAT YOU ARE DOING!
 LDPPFLAGS += -DRESET_SEG_START=0xffff0000
diff --git a/include/configs/microblaze-generic.h b/include/configs/microblaze-generic.h
index 3d9df30..440575f 100644
--- a/include/configs/microblaze-generic.h
+++ b/include/configs/microblaze-generic.h
@@ -12,7 +12,6 @@
 #include "../board/xilinx/microblaze-generic/xparameters.h"
 
 /* MicroBlaze CPU */
-#define	CONFIG_MICROBLAZE	1
 #define	MICROBLAZE_V5		1
 
 /* Open Firmware DTS */
