diff --git a/BaseTools/Conf/tools_def.template b/BaseTools/Conf/tools_def.template
index f7eb87af14..a2ab9680b0 100755
--- a/BaseTools/Conf/tools_def.template
+++ b/BaseTools/Conf/tools_def.template
@@ -368,13 +368,13 @@ DEFINE DTC_BIN                 = ENV(DTC_PREFIX)dtc
 #                               Intel(r) ACPI Compiler from
 #                               https://acpica.org/downloads
 #   GCC46       -Linux,Windows-  Requires:
-#                             GCC 4.6 targeting x86_64-linux-gnu or arm-linux-gnueabi
+#                             GCC 4.6 targeting x86_64-linux-gnu
 #                        Optional:
 #                             Required to build platforms or ACPI tables:
 #                               Intel(r) ACPI Compiler from
 #                               https://acpica.org/downloads
 #   GCC47       -Linux,Windows-  Requires:
-#                             GCC 4.7 targeting x86_64-linux-gnu, aarch64-linux-gnu, or arm-linux-gnueabi
+#                             GCC 4.7 targeting x86_64-linux-gnu
 #                        Optional:
 #                             Required to build platforms or ACPI tables:
 #                               Intel(r) ACPI Compiler from
@@ -4199,12 +4199,6 @@ DEFINE GCC46_IA32_DLINK2_FLAGS       = DEF(GCC45_IA32_DLINK2_FLAGS)
 DEFINE GCC46_X64_DLINK_FLAGS         = DEF(GCC45_X64_DLINK_FLAGS)
 DEFINE GCC46_X64_DLINK2_FLAGS        = DEF(GCC45_X64_DLINK2_FLAGS)
 DEFINE GCC46_ASM_FLAGS               = DEF(GCC45_ASM_FLAGS)
-DEFINE GCC46_ARM_ASM_FLAGS           = $(ARCHASM_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_ASM_FLAGS) -mlittle-endian
-DEFINE GCC46_ARM_CC_FLAGS            = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_ARM_CC_FLAGS) -fstack-protector -mword-relocations
-DEFINE GCC46_ARM_CC_XIPFLAGS         = -D__ARM_FEATURE_UNALIGNED=0
-DEFINE GCC46_ARM_DLINK_FLAGS         = DEF(GCC_ARM_DLINK_FLAGS) -Wl,--oformat=elf32-littlearm
-DEFINE GCC46_ARM_DLINK2_FLAGS        = DEF(GCC_DLINK2_FLAGS_COMMON) -Wl,--defsym=PECOFF_HEADER_SIZE=0x220
-DEFINE GCC46_ARM_ASLDLINK_FLAGS      = DEF(GCC_ARM_ASLDLINK_FLAGS) -Wl,--oformat=elf32-littlearm
 
 DEFINE GCC47_IA32_CC_FLAGS           = DEF(GCC46_IA32_CC_FLAGS)
 DEFINE GCC47_X64_CC_FLAGS            = DEF(GCC46_X64_CC_FLAGS)
@@ -4215,18 +4209,6 @@ DEFINE GCC47_IA32_DLINK2_FLAGS       = DEF(GCC46_IA32_DLINK2_FLAGS)
 DEFINE GCC47_X64_DLINK_FLAGS         = DEF(GCC46_X64_DLINK_FLAGS)
 DEFINE GCC47_X64_DLINK2_FLAGS        = DEF(GCC46_X64_DLINK2_FLAGS)
 DEFINE GCC47_ASM_FLAGS               = DEF(GCC46_ASM_FLAGS)
-DEFINE GCC47_ARM_ASM_FLAGS           = DEF(GCC46_ARM_ASM_FLAGS)
-DEFINE GCC47_AARCH64_ASM_FLAGS       = $(ARCHASM_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_ASM_FLAGS) -mlittle-endian
-DEFINE GCC47_ARM_CC_FLAGS            = DEF(GCC46_ARM_CC_FLAGS)
-DEFINE GCC47_ARM_CC_XIPFLAGS         = DEF(GCC_ARM_CC_XIPFLAGS)
-DEFINE GCC47_AARCH64_CC_FLAGS        = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) -mcmodel=large DEF(GCC_AARCH64_CC_FLAGS)
-DEFINE GCC47_AARCH64_CC_XIPFLAGS     = DEF(GCC_AARCH64_CC_XIPFLAGS)
-DEFINE GCC47_ARM_DLINK_FLAGS         = DEF(GCC46_ARM_DLINK_FLAGS)
-DEFINE GCC47_ARM_DLINK2_FLAGS        = DEF(GCC46_ARM_DLINK2_FLAGS)
-DEFINE GCC47_AARCH64_DLINK_FLAGS     = DEF(GCC_AARCH64_DLINK_FLAGS)
-DEFINE GCC47_AARCH64_DLINK2_FLAGS    = DEF(GCC_DLINK2_FLAGS_COMMON) -Wl,--defsym=PECOFF_HEADER_SIZE=0x228
-DEFINE GCC47_ARM_ASLDLINK_FLAGS      = DEF(GCC46_ARM_ASLDLINK_FLAGS)
-DEFINE GCC47_AARCH64_ASLDLINK_FLAGS  = DEF(GCC_AARCH64_ASLDLINK_FLAGS)
 
 DEFINE GCC48_IA32_CC_FLAGS           = DEF(GCC47_IA32_CC_FLAGS)
 DEFINE GCC48_X64_CC_FLAGS            = DEF(GCC47_X64_CC_FLAGS)
@@ -4237,18 +4219,18 @@ DEFINE GCC48_IA32_DLINK2_FLAGS       = DEF(GCC47_IA32_DLINK2_FLAGS)
 DEFINE GCC48_X64_DLINK_FLAGS         = DEF(GCC47_X64_DLINK_FLAGS)
 DEFINE GCC48_X64_DLINK2_FLAGS        = DEF(GCC47_X64_DLINK2_FLAGS)
 DEFINE GCC48_ASM_FLAGS               = DEF(GCC47_ASM_FLAGS)
-DEFINE GCC48_ARM_ASM_FLAGS           = DEF(GCC47_ARM_ASM_FLAGS)
-DEFINE GCC48_AARCH64_ASM_FLAGS       = DEF(GCC47_AARCH64_ASM_FLAGS)
-DEFINE GCC48_ARM_CC_FLAGS            = DEF(GCC47_ARM_CC_FLAGS)
-DEFINE GCC48_ARM_CC_XIPFLAGS         = DEF(GCC47_ARM_CC_XIPFLAGS)
-DEFINE GCC48_AARCH64_CC_FLAGS        = DEF(GCC47_AARCH64_CC_FLAGS)
-DEFINE GCC48_AARCH64_CC_XIPFLAGS     = DEF(GCC47_AARCH64_CC_XIPFLAGS)
-DEFINE GCC48_ARM_DLINK_FLAGS         = DEF(GCC47_ARM_DLINK_FLAGS)
-DEFINE GCC48_ARM_DLINK2_FLAGS        = DEF(GCC47_ARM_DLINK2_FLAGS)
-DEFINE GCC48_AARCH64_DLINK_FLAGS     = DEF(GCC47_AARCH64_DLINK_FLAGS)
-DEFINE GCC48_AARCH64_DLINK2_FLAGS    = DEF(GCC47_AARCH64_DLINK2_FLAGS)
-DEFINE GCC48_ARM_ASLDLINK_FLAGS      = DEF(GCC47_ARM_ASLDLINK_FLAGS)
-DEFINE GCC48_AARCH64_ASLDLINK_FLAGS  = DEF(GCC47_AARCH64_ASLDLINK_FLAGS)
+DEFINE GCC48_ARM_ASM_FLAGS           = $(ARCHASM_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_ASM_FLAGS) -mlittle-endian
+DEFINE GCC48_AARCH64_ASM_FLAGS       = $(ARCHASM_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_ASM_FLAGS) -mlittle-endian
+DEFINE GCC48_ARM_CC_FLAGS            = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_ARM_CC_FLAGS) -fstack-protector -mword-relocations
+DEFINE GCC48_ARM_CC_XIPFLAGS         = DEF(GCC_ARM_CC_XIPFLAGS)
+DEFINE GCC48_AARCH64_CC_FLAGS        = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) -mcmodel=large DEF(GCC_AARCH64_CC_FLAGS)
+DEFINE GCC48_AARCH64_CC_XIPFLAGS     = DEF(GCC_AARCH64_CC_XIPFLAGS)
+DEFINE GCC48_ARM_DLINK_FLAGS         = DEF(GCC_ARM_DLINK_FLAGS) -Wl,--oformat=elf32-littlearm
+DEFINE GCC48_ARM_DLINK2_FLAGS        = DEF(GCC_DLINK2_FLAGS_COMMON) -Wl,--defsym=PECOFF_HEADER_SIZE=0x220
+DEFINE GCC48_AARCH64_DLINK_FLAGS     = DEF(GCC_AARCH64_DLINK_FLAGS)
+DEFINE GCC48_AARCH64_DLINK2_FLAGS    = DEF(GCC_DLINK2_FLAGS_COMMON) -Wl,--defsym=PECOFF_HEADER_SIZE=0x228
+DEFINE GCC48_ARM_ASLDLINK_FLAGS      = DEF(GCC_ARM_ASLDLINK_FLAGS) -Wl,--oformat=elf32-littlearm
+DEFINE GCC48_AARCH64_ASLDLINK_FLAGS  = DEF(GCC_AARCH64_ASLDLINK_FLAGS)
 
 DEFINE GCC49_IA32_CC_FLAGS           = DEF(GCC48_IA32_CC_FLAGS)
 DEFINE GCC49_X64_CC_FLAGS            = DEF(GCC48_X64_CC_FLAGS)
@@ -4588,40 +4570,6 @@ RELEASE_GCC46_IA32_CC_FLAGS       = DEF(GCC46_IA32_CC_FLAGS) -Os -Wno-unused-but
 RELEASE_GCC46_X64_CC_FLAGS       = DEF(GCC46_X64_CC_FLAGS) -Os -Wno-unused-but-set-variable
   NOOPT_GCC46_X64_CC_FLAGS       = DEF(GCC46_X64_CC_FLAGS) -O0
 
-##################
-# GCC46 ARM definitions
-##################
-*_GCC46_ARM_OBJCOPY_PATH         = echo
-*_GCC46_ARM_CC_PATH              = ENV(GCC46_ARM_PREFIX)gcc
-*_GCC46_ARM_SLINK_PATH           = ENV(GCC46_ARM_PREFIX)ar
-*_GCC46_ARM_DLINK_PATH           = ENV(GCC46_ARM_PREFIX)gcc
-*_GCC46_ARM_ASLDLINK_PATH        = ENV(GCC46_ARM_PREFIX)gcc
-*_GCC46_ARM_ASM_PATH             = ENV(GCC46_ARM_PREFIX)gcc
-*_GCC46_ARM_PP_PATH              = ENV(GCC46_ARM_PREFIX)gcc
-*_GCC46_ARM_VFRPP_PATH           = ENV(GCC46_ARM_PREFIX)gcc
-*_GCC46_ARM_ASLCC_PATH           = ENV(GCC46_ARM_PREFIX)gcc
-*_GCC46_ARM_ASLPP_PATH           = ENV(GCC46_ARM_PREFIX)gcc
-*_GCC46_ARM_RC_PATH              = ENV(GCC46_ARM_PREFIX)objcopy
-
-*_GCC46_ARM_ARCHCC_FLAGS         =
-*_GCC46_ARM_PLATFORM_FLAGS       = -march=armv7-a
-
-*_GCC46_ARM_ASLCC_FLAGS          = DEF(GCC_ASLCC_FLAGS)
-*_GCC46_ARM_ASLDLINK_FLAGS       = DEF(GCC46_ARM_ASLDLINK_FLAGS)
-*_GCC46_ARM_ASM_FLAGS            = DEF(GCC46_ARM_ASM_FLAGS)
-*_GCC46_ARM_DLINK_FLAGS          = DEF(GCC46_ARM_DLINK_FLAGS)
-*_GCC46_ARM_DLINK2_FLAGS         = DEF(GCC46_ARM_DLINK2_FLAGS)
-*_GCC46_ARM_DTCPP_FLAGS          = DEF(GCC_DTCPP_FLAGS)
-*_GCC46_ARM_PLATFORM_FLAGS       = -march=armv7-a
-*_GCC46_ARM_PP_FLAGS             = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_PP_FLAGS)
-*_GCC46_ARM_RC_FLAGS             = DEF(GCC_ARM_RC_FLAGS)
-*_GCC46_ARM_VFRPP_FLAGS          = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_VFRPP_FLAGS)
-*_GCC46_ARM_CC_XIPFLAGS          = DEF(GCC46_ARM_CC_XIPFLAGS)
-
-  DEBUG_GCC46_ARM_CC_FLAGS       = DEF(GCC46_ARM_CC_FLAGS) -O0
-RELEASE_GCC46_ARM_CC_FLAGS       = DEF(GCC46_ARM_CC_FLAGS) -Wno-unused-but-set-variable
-  NOOPT_GCC46_ARM_CC_FLAGS       = DEF(GCC46_ARM_CC_FLAGS) -O0
-
 ####################################################################################
 #
 # GCC 4.7 - This configuration is used to compile under Linux to produce
@@ -4698,69 +4646,6 @@ RELEASE_GCC47_IA32_CC_FLAGS       = DEF(GCC47_IA32_CC_FLAGS) -Os -Wno-unused-but
 RELEASE_GCC47_X64_CC_FLAGS       = DEF(GCC47_X64_CC_FLAGS) -Os -Wno-unused-but-set-variable
   NOOPT_GCC47_X64_CC_FLAGS       = DEF(GCC47_X64_CC_FLAGS) -O0
 
-##################
-# GCC47 ARM definitions
-##################
-*_GCC47_ARM_CC_PATH              = ENV(GCC47_ARM_PREFIX)gcc
-*_GCC47_ARM_SLINK_PATH           = ENV(GCC47_ARM_PREFIX)ar
-*_GCC47_ARM_DLINK_PATH           = ENV(GCC47_ARM_PREFIX)gcc
-*_GCC47_ARM_ASLDLINK_PATH        = ENV(GCC47_ARM_PREFIX)gcc
-*_GCC47_ARM_ASM_PATH             = ENV(GCC47_ARM_PREFIX)gcc
-*_GCC47_ARM_PP_PATH              = ENV(GCC47_ARM_PREFIX)gcc
-*_GCC47_ARM_VFRPP_PATH           = ENV(GCC47_ARM_PREFIX)gcc
-*_GCC47_ARM_ASLCC_PATH           = ENV(GCC47_ARM_PREFIX)gcc
-*_GCC47_ARM_ASLPP_PATH           = ENV(GCC47_ARM_PREFIX)gcc
-*_GCC47_ARM_RC_PATH              = ENV(GCC47_ARM_PREFIX)objcopy
-
-*_GCC47_ARM_ARCHCC_FLAGS         =
-*_GCC47_ARM_PLATFORM_FLAGS       = -march=armv7-a
-
-*_GCC47_ARM_ASLCC_FLAGS          = DEF(GCC_ASLCC_FLAGS)
-*_GCC47_ARM_ASLDLINK_FLAGS       = DEF(GCC47_ARM_ASLDLINK_FLAGS)
-*_GCC47_ARM_ASM_FLAGS            = DEF(GCC47_ARM_ASM_FLAGS)
-*_GCC47_ARM_DLINK_FLAGS          = DEF(GCC47_ARM_DLINK_FLAGS)
-*_GCC47_ARM_DLINK2_FLAGS         = DEF(GCC47_ARM_DLINK2_FLAGS)
-*_GCC47_ARM_DTCPP_FLAGS          = DEF(GCC_DTCPP_FLAGS)
-*_GCC47_ARM_PLATFORM_FLAGS       = -march=armv7-a
-*_GCC47_ARM_PP_FLAGS             = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_PP_FLAGS)
-*_GCC47_ARM_RC_FLAGS             = DEF(GCC_ARM_RC_FLAGS)
-*_GCC47_ARM_VFRPP_FLAGS          = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_VFRPP_FLAGS)
-*_GCC47_ARM_CC_XIPFLAGS          = DEF(GCC47_ARM_CC_XIPFLAGS)
-
-  DEBUG_GCC47_ARM_CC_FLAGS       = DEF(GCC47_ARM_CC_FLAGS) -O0
-RELEASE_GCC47_ARM_CC_FLAGS       = DEF(GCC47_ARM_CC_FLAGS) -Wno-unused-but-set-variable
-  NOOPT_GCC47_ARM_CC_FLAGS       = DEF(GCC47_ARM_CC_FLAGS) -O0
-
-##################
-# GCC47 AARCH64 definitions
-##################
-*_GCC47_AARCH64_CC_PATH          = ENV(GCC47_AARCH64_PREFIX)gcc
-*_GCC47_AARCH64_SLINK_PATH       = ENV(GCC47_AARCH64_PREFIX)ar
-*_GCC47_AARCH64_DLINK_PATH       = ENV(GCC47_AARCH64_PREFIX)gcc
-*_GCC47_AARCH64_ASLDLINK_PATH    = ENV(GCC47_AARCH64_PREFIX)gcc
-*_GCC47_AARCH64_ASM_PATH         = ENV(GCC47_AARCH64_PREFIX)gcc
-*_GCC47_AARCH64_PP_PATH          = ENV(GCC47_AARCH64_PREFIX)gcc
-*_GCC47_AARCH64_VFRPP_PATH       = ENV(GCC47_AARCH64_PREFIX)gcc
-*_GCC47_AARCH64_ASLCC_PATH       = ENV(GCC47_AARCH64_PREFIX)gcc
-*_GCC47_AARCH64_ASLPP_PATH       = ENV(GCC47_AARCH64_PREFIX)gcc
-*_GCC47_AARCH64_RC_PATH          = ENV(GCC47_AARCH64_PREFIX)objcopy
-
-*_GCC47_AARCH64_ASLCC_FLAGS      = DEF(GCC_ASLCC_FLAGS)
-*_GCC47_AARCH64_ASLDLINK_FLAGS   = DEF(GCC47_AARCH64_ASLDLINK_FLAGS)
-*_GCC47_AARCH64_ASM_FLAGS        = DEF(GCC47_AARCH64_ASM_FLAGS)
-*_GCC47_AARCH64_DLINK_FLAGS      = DEF(GCC47_AARCH64_DLINK_FLAGS)
-*_GCC47_AARCH64_DLINK2_FLAGS     = DEF(GCC47_AARCH64_DLINK2_FLAGS)
-*_GCC47_AARCH64_DTCPP_FLAGS      = DEF(GCC_DTCPP_FLAGS)
-*_GCC47_AARCH64_PLATFORM_FLAGS   =
-*_GCC47_AARCH64_PP_FLAGS         = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_PP_FLAGS)
-*_GCC47_AARCH64_RC_FLAGS         = DEF(GCC_AARCH64_RC_FLAGS)
-*_GCC47_AARCH64_VFRPP_FLAGS      = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_VFRPP_FLAGS)
-*_GCC47_AARCH64_CC_XIPFLAGS      = DEF(GCC47_AARCH64_CC_XIPFLAGS)
-
-  DEBUG_GCC47_AARCH64_CC_FLAGS   = DEF(GCC47_AARCH64_CC_FLAGS) -O0
-RELEASE_GCC47_AARCH64_CC_FLAGS   = DEF(GCC47_AARCH64_CC_FLAGS) -Wno-unused-but-set-variable
-  NOOPT_GCC47_AARCH64_CC_FLAGS   = DEF(GCC47_AARCH64_CC_FLAGS) -O0
-
 ####################################################################################
 #
 # GCC 4.8 - This configuration is used to compile under Linux to produce