add basic support for frosted operating system

https://github.com/insane-adding-machines/frosted

Rework our architecture selection and os dependent logic a little
bit to be cleaner. As only arm is supported, we only modify
arm systems to comply with new changeset.

39 files changed, 1224 insertions, 25 deletions

diff --git a/Config.in b/Config.in
index 2467ba593..e30077a69 100644
--- a/Config.in
+++ b/Config.in
@@ -65,6 +65,11 @@ source "target/linux/Config.in"
 endmenu
 endmenu
 
+menu "Frosted configuration"
+	visible if ADK_TARGET_OS_FROSTED && !ADK_TARGET_CHOOSE_ARCH
+source "target/frosted/Config.in"
+endmenu
+
 menu "Toolchain settings"
 	visible if !ADK_TARGET_CHOOSE_ARCH
 
diff --git a/mk/build.mk b/mk/build.mk
index de911508c..67a53896a 100644
--- a/mk/build.mk
+++ b/mk/build.mk
@@ -175,6 +175,9 @@ else
 ifeq ($(ADK_TARGET_OS_BAREMETAL),y)
 	$(MAKE) -f mk/build.mk package/hostcompile toolchain/final
 endif
+ifeq ($(ADK_TARGET_OS_FROSTED),y)
+	$(MAKE) -f mk/build.mk package/hostcompile toolchain/final target/config-prepare target/compile target/install
+endif
 ifeq ($(ADK_TARGET_OS_LINUX),y)
 	$(MAKE) -f mk/build.mk package/hostcompile toolchain/final target/config-prepare target/compile package_clean package/compile root_clean package/install target/install package_index
 endif
diff --git a/mk/fetch.mk b/mk/fetch.mk
index 636c93154..b6164c03c 100644
--- a/mk/fetch.mk
+++ b/mk/fetch.mk
@@ -87,6 +87,9 @@ $(1):
 		  git clone --progress --depth 1 $${PKG_SITES} $${PKG_NAME}-$${PKG_VERSION} $(DL_TRACE); \
 		  if [ $$$$? -ne 0 ]; then echo "git clone error"; exit 1; fi; \
 		fi; \
+		if [ ! -z "$${PKG_GIT_SUBMODULE}" ]; then \
+			(cd $${PKG_NAME}-$${PKG_VERSION}; git submodule update --init --recursive) $(DL_TRACE); \
+		fi; \
 		rm -rf $${PKG_NAME}-$${PKG_VERSION}/.git; \
 		tar cJf $${PKG_NAME}-$${PKG_VERSION}.tar.xz $${PKG_NAME}-$${PKG_VERSION}; \
 		touch $$$${filename}.nohash; \
diff --git a/mk/vars.mk b/mk/vars.mk
index 7ed0f0c67..ddc015fff 100644
--- a/mk/vars.mk
+++ b/mk/vars.mk
@@ -85,8 +85,12 @@ ifeq ($(ADK_TARGET_ARCH_CSKY),y)
 GNU_TARGET_NAME:=	$(ADK_TARGET_CPU_ARCH)-unknown-$(ADK_TARGET_LINUXTYPE)
 endif
 ifeq ($(ADK_TARGET_LIB_NEWLIB),y)
+ifeq ($(ADK_TARGET_OS_FROSTED),y)
+GNU_TARGET_NAME:=	$(ADK_TARGET_CPU_ARCH)-frosted-$(ADK_TARGET_SUFFIX)
+else
 GNU_TARGET_NAME:=	$(ADK_TARGET_CPU_ARCH)-$(ADK_TARGET_SUFFIX)
 endif
+endif
 TARGET_CROSS:=		$(TOOLCHAIN_DIR)/usr/bin/$(GNU_TARGET_NAME)-
 TARGET_COMPILER_PREFIX?=${TARGET_CROSS}
 CONFIGURE_TRIPLE:=	--build=${GNU_HOST_NAME} \
@@ -235,6 +239,11 @@ ifneq ($(ADK_TARGET_USE_GNU_HASHSTYLE),)
 TARGET_LDFLAGS+=	-Wl,--hash-style=gnu
 endif
 
+# special operating system flags
+ifeq ($(ADK_TARGET_OS_FROSTED),y)
+TARGET_CFLAGS+=         -mlong-calls -fno-common -msingle-pic-base -mno-pic-data-is-text-relative
+endif
+
 # special architecture optimization flags
 ifeq ($(ADK_TARGET_ARCH_XTENSA),y)
 ifeq ($(ADK_TARGET_BIG_ENDIAN),)
diff --git a/scripts/create-menu b/scripts/create-menu
index 0fca6a49f..3c0d87ca9 100755
--- a/scripts/create-menu
+++ b/scripts/create-menu
@@ -71,8 +71,15 @@ config ADK_TARGET_ARCH
 EOD
 
 for arch in $(cat $topdir/target/arch.lst);do
-	ARCH=$(echo $arch | tr '[:lower:]' '[:upper:]')
-	printf "\tdefault \"$arch\" if ADK_TARGET_ARCH_$ARCH\n" >> target/config/Config.in.arch.default
+  ARCH=$(echo $arch | tr '[:lower:]' '[:upper:]')
+  printf "\tdefault \"$arch\" if ADK_TARGET_ARCH_$ARCH\n" >> target/config/Config.in.arch.default
+done
+printf "\n\n" >> target/config/Config.in.arch.default
+
+for arch in $(cat $topdir/target/arch.lst);do
+  ARCH=$(echo $arch | tr '[:lower:]' '[:upper:]')
+  printf "config ADK_TARGET_ARCH_${ARCH}\n" >> $topdir/target/config/Config.in.arch.default
+  printf "\tbool\n\n" >> $topdir/target/config/Config.in.arch.default
 done
 
 cat > $topdir/target/config/Config.in.arch.choice << EOD
@@ -84,21 +91,18 @@ config ADK_TARGET_CHOOSE_ARCH
 	bool "choose architecture"
 
 EOD
-
-for arch in $(cat $topdir/target/arch.lst);do
-	ARCH=$(echo $arch | tr '[:lower:]' '[:upper:]')
-	printf "config ADK_TARGET_ARCH_$ARCH\n" >> $topdir/target/config/Config.in.arch.choice
-	printf "\tbool \"$arch\"\n" >> $topdir/target/config/Config.in.arch.choice
-	case $arch in
-		alpha|s390|tile|ppc64|mips64)
-		  printf "\tdepends on ADK_TARGET_OS_LINUX\n" >> $topdir/target/config/Config.in.arch.choice
-		  ;;
-		cr16|epiphany|m32c|m32r|mn10300|moxie|msp430|rx|v850)
-		  printf "\tdepends on ADK_TARGET_OS_BAREMETAL\n" >> $topdir/target/config/Config.in.arch.choice
-		  ;;
-	esac
-	printf "\thelp\n" >> $topdir/target/config/Config.in.arch.choice
-	printf "\t  Support for $ARCH systems.\n\n" >> $topdir/target/config/Config.in.arch.choice
+for os in linux frosted baremetal; do
+  for arch in $(cat $topdir/target/$os/arch.lst);do
+    OS=$(echo $os | tr '[:lower:]' '[:upper:]')
+    ARCH=$(echo $arch | tr '[:lower:]' '[:upper:]')
+    printf "config ADK_TARGET_${OS}_ARCH_${ARCH}\n" >> $topdir/target/config/Config.in.arch.choice
+    printf "\tbool \"$arch\"\n" >> $topdir/target/config/Config.in.arch.choice
+    printf "\tdepends on ADK_TARGET_OS_${OS}\n" >> $topdir/target/config/Config.in.arch.choice
+    printf "\tselect ADK_TARGET_ARCH_${ARCH}\n" >> $topdir/target/config/Config.in.arch.choice
+    printf "\thelp\n" >> $topdir/target/config/Config.in.arch.choice
+    printf "\t  Support for $ARCH systems.\n\n" >> $topdir/target/config/Config.in.arch.choice
+  done
 done
 printf "endchoice\n" >> $topdir/target/config/Config.in.arch.choice
+
 exit 0
diff --git a/target/Makefile b/target/Makefile
index 2b6498011..47626deaa 100644
--- a/target/Makefile
+++ b/target/Makefile
@@ -31,6 +31,7 @@ ADK_PACKAGE_CRYPTINIT_ROOT:=$(strip $(subst ",, $(ADK_PACKAGE_CRYPTINIT_ROOT)))
 ADK_PACKAGE_CRYPTINIT_SWAP:=$(strip $(subst ",, $(ADK_PACKAGE_CRYPTINIT_SWAP)))
 ADK_PACKAGE_CMDLINE:=root=$(ADK_PACKAGE_CRYPTINIT_ROOT) swap=$(ADK_PACKAGE_CRYPTINIT_SWAP) resume=/dev/mapper/swapcrypt
 
+ifeq ($(ADK_TARGET_OS_LINUX),y)
 ifeq ($(ADK_TARGET_KERNEL_USE_MINICONFIG),y)
 ifeq ($(ADK_TARGET_KERNEL_CUSTOMISING),y)
 config-prepare: $(ADK_TOPDIR)/.config
@@ -129,13 +130,29 @@ else
 config-prepare: $(ADK_TOPDIR)/.config
 	@true
 endif
+endif
+
+ifeq ($(ADK_TARGET_OS_FROSTED),y)
+config-prepare: $(ADK_TOPDIR)/.config
+	@PATH='$(HOST_PATH)' sed -n '/^FROSTED_/s///p' $(ADK_TOPDIR)/.config \
+	    >$(BUILD_DIR)/.frosted
+endif
 
+ifeq ($(ADK_TARGET_OS_FROSTED),y)
+prepare: frosted-prepare
+compile: frosted-compile
+install: frosted-install
+endif
+
+
+ifeq ($(ADK_TARGET_OS_LINUX),y)
 prepare: $(ADK_TARGET_ARCH)-prepare
 compile: $(ADK_TARGET_ARCH)-compile
 image: $(ADK_TARGET_ARCH)-imageclean $(ADK_TARGET_ARCH)-imageinstall
 targethelp: $(ADK_TARGET_ARCH)-targethelp
 install: $(ADK_TARGET_ARCH)-imageclean $(ADK_TARGET_ARCH)-install $(ADK_TARGET_ARCH)-imageinstall
 clean: $(ADK_TARGET_ARCH)-clean $(ADK_TARGET_ARCH)-imageclean
+endif
 
 %-clean:
 	$(START_TRACE) "target/$(patsubst %-clean,%,$@)-clean.. "
diff --git a/target/arm/systems/banana-pro b/target/arm/systems/banana-pro
index e5bcc2b1c..7a30cb1ed 100644
--- a/target/arm/systems/banana-pro
+++ b/target/arm/systems/banana-pro
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_BANANA_PRO
 	bool "Banana Pro"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_CORTEX_A7
 	select ADK_TARGET_CPU_WITH_NEON
diff --git a/target/arm/systems/beaglebone-black b/target/arm/systems/beaglebone-black
index d14e6da19..9874d04c7 100644
--- a/target/arm/systems/beaglebone-black
+++ b/target/arm/systems/beaglebone-black
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_BEAGLEBONE_BLACK
 	bool "BeagleBone Black"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_CORTEX_A8
 	select ADK_TARGET_CPU_WITH_NEON
diff --git a/target/arm/systems/kinetis-k70 b/target/arm/systems/kinetis-k70
index 82f757bb1..b9373dc1f 100644
--- a/target/arm/systems/kinetis-k70
+++ b/target/arm/systems/kinetis-k70
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_KINETIS_K70
 	bool "Kinetis K70"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_EXPERIMENTAL
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_CORTEX_M3
diff --git a/target/arm/systems/linksys-nslu2 b/target/arm/systems/linksys-nslu2
index 180d6d974..c53bd2799 100644
--- a/target/arm/systems/linksys-nslu2
+++ b/target/arm/systems/linksys-nslu2
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_LINKSYS_NSLU2
 	bool "Linksys NSLU2"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_BIG_ENDIAN
 	select ADK_TARGET_CPU_ARM_XSCALE
 	select ADK_TARGET_WITH_USB
diff --git a/target/arm/systems/orange-pi0 b/target/arm/systems/orange-pi0
index 9abc2100d..b1414dcfa 100644
--- a/target/arm/systems/orange-pi0
+++ b/target/arm/systems/orange-pi0
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_ORANGE_PI0
 	bool "Orange PI Zero"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_CORTEX_A7
 	select ADK_TARGET_CPU_WITH_NEON
diff --git a/target/arm/systems/qemu-arm-lm3s6965evb b/target/arm/systems/qemu-arm-lm3s6965evb
new file mode 100644
index 000000000..e82cc04f3
--- /dev/null
+++ b/target/arm/systems/qemu-arm-lm3s6965evb
@@ -0,0 +1,10 @@
+config ADK_TARGET_SYSTEM_QEMU_ARM_LM3S6965EVB
+	bool "Qemu Emulator (lm3s6965evb) no MMU"
+	depends on ADK_TARGET_OS_FROSTED
+	depends on ADK_TARGET_LITTLE_ENDIAN
+	select ADK_TARGET_CPU_ARM_CORTEX_M3
+	select ADK_TARGET_ARCH_ARM_WITH_THUMB
+	select ADK_TARGET_QEMU
+	help
+	  Qemu Emulator for ARM architecture (lm3s6965evb) without MMU.
+
diff --git a/target/arm/systems/qemu-arm-realview-eb-mpcore b/target/arm/systems/qemu-arm-realview-eb-mpcore
index 5a65aca72..e4d60e760 100644
--- a/target/arm/systems/qemu-arm-realview-eb-mpcore
+++ b/target/arm/systems/qemu-arm-realview-eb-mpcore
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_QEMU_ARM_REALVIEW_EB_MPCORE
 	bool "Qemu Emulator (Realview/EB-Mpcore)"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_ARM11MPCORE
 	select ADK_TARGET_QEMU
diff --git a/target/arm/systems/qemu-arm-spitz b/target/arm/systems/qemu-arm-spitz
index a695065e6..f3d70314d 100644
--- a/target/arm/systems/qemu-arm-spitz
+++ b/target/arm/systems/qemu-arm-spitz
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_QEMU_ARM_SPITZ
 	bool "Qemu Emulator (Spitz PDA)"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_XSCALE
 	select ADK_TARGET_QEMU
diff --git a/target/arm/systems/qemu-arm-terrier b/target/arm/systems/qemu-arm-terrier
index f6dbd6b6b..66bed2723 100644
--- a/target/arm/systems/qemu-arm-terrier
+++ b/target/arm/systems/qemu-arm-terrier
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_QEMU_ARM_TERRIER
 	bool "Qemu Emulator (Terrier PDA)"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_XSCALE
 	select ADK_TARGET_QEMU
diff --git a/target/arm/systems/qemu-arm-versatilepb b/target/arm/systems/qemu-arm-versatilepb
index 2ab7f712f..ab100fc2c 100644
--- a/target/arm/systems/qemu-arm-versatilepb
+++ b/target/arm/systems/qemu-arm-versatilepb
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB
 	bool "Qemu Emulator (Versatile/PB)"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_ARM926EJ_S
 	select ADK_TARGET_QEMU
diff --git a/target/arm/systems/qemu-arm-versatilepb-nommu b/target/arm/systems/qemu-arm-versatilepb-nommu
index a1aef83db..599b1e7b3 100644
--- a/target/arm/systems/qemu-arm-versatilepb-nommu
+++ b/target/arm/systems/qemu-arm-versatilepb-nommu
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB_NOMMU
 	bool "Qemu Emulator (Versatile/PB) no MMU"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_ARM926EJ_S_NOMMU
 	select ADK_TARGET_QEMU
diff --git a/target/arm/systems/qemu-arm-vexpress-a9 b/target/arm/systems/qemu-arm-vexpress-a9
index faff5f31b..b69ff7d59 100644
--- a/target/arm/systems/qemu-arm-vexpress-a9
+++ b/target/arm/systems/qemu-arm-vexpress-a9
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_QEMU_ARM_VEXPRESS_A9
 	bool "Qemu Emulator (Vexpress A9)"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_CORTEX_A9
 	select ADK_TARGET_QEMU
diff --git a/target/arm/systems/qemu-arm-xilinx-zynq b/target/arm/systems/qemu-arm-xilinx-zynq
index fa6641d10..c00543509 100644
--- a/target/arm/systems/qemu-arm-xilinx-zynq
+++ b/target/arm/systems/qemu-arm-xilinx-zynq
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_QEMU_ARM_XILINX_ZYNQ
 	bool "Qemu Emulator (Xilinx Zynq)"
+	depends on ADK_TARGET_OS_LINUX
 	select ADK_TARGET_CPU_ARM_CORTEX_A9
 	select ADK_TARGET_QEMU
 	select ADK_TARGET_KERNEL_ZIMAGE
diff --git a/target/arm/systems/raspberry-pi b/target/arm/systems/raspberry-pi
index 2dd918c9d..4768f8978 100644
--- a/target/arm/systems/raspberry-pi
+++ b/target/arm/systems/raspberry-pi
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_RASPBERRY_PI
 	bool "Raspberry PI"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_ARM1176JZF_S
 	select ADK_TARGET_BOARD_BCM28XX
diff --git a/target/arm/systems/raspberry-pi0 b/target/arm/systems/raspberry-pi0
index 9072c2818..0c5d79a5a 100644
--- a/target/arm/systems/raspberry-pi0
+++ b/target/arm/systems/raspberry-pi0
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_RASPBERRY_PI0
 	bool "Raspberry PI Zero W"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_ARM1176JZF_S
 	select ADK_TARGET_BOARD_BCM28XX
diff --git a/target/arm/systems/raspberry-pi2 b/target/arm/systems/raspberry-pi2
index 76abde793..7c782d2e2 100644
--- a/target/arm/systems/raspberry-pi2
+++ b/target/arm/systems/raspberry-pi2
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_RASPBERRY_PI2
 	bool "Raspberry PI 2"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_CORTEX_A7
 	select ADK_TARGET_BOARD_BCM28XX
diff --git a/target/arm/systems/raspberry-pi3 b/target/arm/systems/raspberry-pi3
index 61f4100d8..4c955d202 100644
--- a/target/arm/systems/raspberry-pi3
+++ b/target/arm/systems/raspberry-pi3
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_RASPBERRY_PI3
 	bool "Raspberry PI 3"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_CORTEX_A53
 	select ADK_TARGET_BOARD_BCM28XX
diff --git a/target/arm/systems/sharp-zaurus b/target/arm/systems/sharp-zaurus
index f30c4922f..d2e9ea139 100644
--- a/target/arm/systems/sharp-zaurus
+++ b/target/arm/systems/sharp-zaurus
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_SHARP_ZAURUS
 	bool "Sharp Zaurus CL3200 (Terrier)"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_XSCALE
 	select ADK_TARGET_CPU_WITH_IWMMXT
diff --git a/target/arm/systems/solidrun-clearfog b/target/arm/systems/solidrun-clearfog
index a0f61e091..d912c6c22 100644
--- a/target/arm/systems/solidrun-clearfog
+++ b/target/arm/systems/solidrun-clearfog
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_SOLIDRUN_CLEARFOG
 	bool "Solidrun Clearfog Embedded Systems"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_EXPERIMENTAL
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_CORTEX_A9
diff --git a/target/arm/systems/solidrun-imx6 b/target/arm/systems/solidrun-imx6
index 604a0b042..089161913 100644
--- a/target/arm/systems/solidrun-imx6
+++ b/target/arm/systems/solidrun-imx6
@@ -1,5 +1,6 @@
 config ADK_TARGET_SYSTEM_SOLIDRUN_IMX6
 	bool "Solidrun IMX6 Embedded Systems"
+	depends on ADK_TARGET_OS_LINUX
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_CORTEX_A9
 	select ADK_TARGET_WITH_VGA
diff --git a/target/arm/systems/st-stm32f429 b/target/arm/systems/st-stm32f429
index 1190fddbf..7a9e0f1b6 100644
--- a/target/arm/systems/st-stm32f429
+++ b/target/arm/systems/st-stm32f429
@@ -1,6 +1,5 @@
 config ADK_TARGET_SYSTEM_ST_STM32F429
 	bool "STMicroelectronics STM32F429"
-	depends on ADK_EXPERIMENTAL
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_CORTEX_M4
 	select ADK_TARGET_ARCH_ARM_WITH_THUMB
diff --git a/target/arm/systems/st-stm32f769 b/target/arm/systems/st-stm32f769
index 2227e16db..4f6571851 100644
--- a/target/arm/systems/st-stm32f769
+++ b/target/arm/systems/st-stm32f769
@@ -1,6 +1,5 @@
 config ADK_TARGET_SYSTEM_ST_STM32F769
 	bool "STMicroelectronics STM32F769"
-	depends on ADK_EXPERIMENTAL
 	depends on ADK_TARGET_LITTLE_ENDIAN
 	select ADK_TARGET_CPU_ARM_CORTEX_M7
 	select ADK_TARGET_HARD_FLOAT_DP
diff --git a/target/baremetal/arch.lst b/target/baremetal/arch.lst
new file mode 100644
index 000000000..b54278d62
--- /dev/null
+++ b/target/baremetal/arch.lst
@@ -0,0 +1,38 @@
+aarch64
+arc
+arm
+avr32
+bfin
+c6x
+cr16
+cris
+csky
+epiphany
+frv
+h8300
+hppa
+ia64
+lm32
+m32c
+m32r
+m68k
+metag
+microblaze
+mips
+mn10300
+moxie
+msp430
+nds32
+nios2
+or1k
+ppc
+riscv32
+riscv64
+rx
+sparc
+sparc64
+sh
+v850
+x86
+x86_64
+xtensa
diff --git a/target/config/Config.in.binfmt b/target/config/Config.in.binfmt
index 7567b07bc..9257fe69d 100644
--- a/target/config/Config.in.binfmt
+++ b/target/config/Config.in.binfmt
@@ -26,6 +26,11 @@ config ADK_TARGET_BINFMT_DSBT
 
 endchoice
 
+config ADK_TARGET_BINFMT_FLAT
+	bool
+	depends on ADK_TARGET_OS_FROSTED
+	default y
+
 # Set up flat binary type
 choice
 prompt "FLAT Binary type"
diff --git a/target/config/Config.in.libc b/target/config/Config.in.libc
index 07c643606..1989e1c00 100644
--- a/target/config/Config.in.libc
+++ b/target/config/Config.in.libc
@@ -125,7 +125,8 @@ config ADK_TARGET_LIB_NEWLIB
 		ADK_TARGET_ARCH_V850 || \
 		ADK_TARGET_ARCH_X86 || \
 		ADK_TARGET_ARCH_X86_64 || \
-		ADK_TARGET_ARCH_XTENSA) && ADK_TARGET_OS_BAREMETAL
+		ADK_TARGET_ARCH_XTENSA) && \
+		(ADK_TARGET_OS_BAREMETAL || ADK_TARGET_OS_FROSTED)
 	help
 	  https://sourceware.org/newlib/
 
@@ -164,15 +165,19 @@ config ADK_TARGET_LIB_MUSL_GIT
 
 config ADK_TARGET_LIB_NEWLIB_2_5_0
 	bool "2.5.0"
-	depends on ADK_TARGET_LIB_NEWLIB && !ADK_TARGET_ARCH_RISCV
+	depends on ADK_TARGET_LIB_NEWLIB && !ADK_TARGET_ARCH_RISCV && !ADK_TARGET_OS_FROSTED
 
 config ADK_TARGET_LIB_NEWLIB_RISCV
 	bool "2.4.0-riscv"
 	depends on ADK_TARGET_LIB_NEWLIB && ADK_TARGET_ARCH_RISCV
 
+config ADK_TARGET_LIB_NEWLIB_FROSTED
+	bool "frosted-git"
+	depends on ADK_TARGET_LIB_NEWLIB && ADK_TARGET_OS_FROSTED
+
 config ADK_TARGET_LIB_NEWLIB_GIT
 	bool "git"
-	depends on ADK_TARGET_LIB_NEWLIB && !ADK_TARGET_ARCH_RISCV
+	depends on ADK_TARGET_LIB_NEWLIB && !ADK_TARGET_ARCH_RISCV && !ADK_TARGET_OS_FROSTED
 
 endchoice
 
diff --git a/target/config/Config.in.os b/target/config/Config.in.os
index 1d21d09e8..2eb420e14 100644
--- a/target/config/Config.in.os
+++ b/target/config/Config.in.os
@@ -9,6 +9,11 @@ config ADK_TARGET_OS_LINUX
 	help
 	  Create a Linux system or toolchain.
 
+config ADK_TARGET_OS_FROSTED
+	bool "Frosted"
+	help
+	  Create a frosted appliance or toolchain.
+
 config ADK_TARGET_OS_BAREMETAL
 	bool "Bare metal"
 	help
diff --git a/target/frosted/Config.in b/target/frosted/Config.in
new file mode 100644
index 000000000..3ed716f71
--- /dev/null
+++ b/target/frosted/Config.in
@@ -0,0 +1,988 @@
+menu "Compiler options"
+    config FROSTED_GDB_CFLAG
+    bool "Keep debugging symbols"
+    default y
+
+    choice
+    prompt "Compiler optimization"
+        config FROSTED_OPTIMIZE_NONE
+        bool "No optimization"
+
+        config FROSTED_OPTIMIZE_SIZE
+        bool "Optimize for size"
+
+        config FROSTED_OPTIMIZE_PERF
+        bool "Optimize for performance"
+    endchoice
+
+
+endmenu
+
+
+menu "Platform Selection"
+
+    choice FROSTED_ARCH
+        prompt "Architecture"
+        default FROSTED_ARCH_LM3S
+
+        config FROSTED_ARCH_LM3S
+        bool "LM3S"
+        help
+            Enable support for Stellaris LM3S systems
+
+        config FROSTED_ARCH_LPC17XX
+        bool "LPC17XX"
+        help
+            Enable support for NXP LPC17xx systems
+
+        config FROSTED_ARCH_STM32F4
+        bool "STM32F4"
+        help
+            Enable support for ST STM32F4 systems
+
+        config FROSTED_ARCH_STM32F7
+        bool "STM32F7"
+        help
+            Enable support for ST STM32F7 systems
+    endchoice
+
+if FROSTED_ARCH_STM32F7
+
+choice 
+    prompt "MCU"
+    default FROSTED_ARCH_STM32F746_NG
+
+config FROSTED_ARCH_STM32F746_NG
+    bool "STM32F746NG 1MB"
+    select FROSTED_FLASH_SIZE_1MB
+    select FROSTED_RAM_SIZE_320KB
+    select FROSTED_ARCH_STM32F746
+
+config FROSTED_ARCH_STM32F769_NI
+    bool "STM32F769NI 2MB"
+    select FROSTED_FLASH_SIZE_2MB
+    select FROSTED_RAM_SIZE_368KB
+    select FROSTED_ARCH_STM32F769
+
+endchoice
+
+endif
+
+if FROSTED_ARCH_STM32F4
+
+choice 
+    prompt "MCU"
+    default FROSTED_ARCH_STM32F407_XG
+
+config FROSTED_ARCH_STM32F401_XB
+    bool "STM32F401xB 128KB"
+    select FROSTED_FLASH_SIZE_128KB
+    select FROSTED_RAM_SIZE_64KB
+    select FROSTED_ARCH_STM32F401
+config FROSTED_ARCH_STM32F401_XC
+    bool "STM32F401xC 256KB"
+    select FROSTED_FLASH_SIZE_256KB
+    select FROSTED_RAM_SIZE_64KB
+    select FROSTED_ARCH_STM32F401
+config FROSTED_ARCH_STM32F401_XD
+    bool "STM32F401xD 384KB"
+    select FROSTED_FLASH_SIZE_384KB
+    select FROSTED_RAM_SIZE_96KB
+    select FROSTED_ARCH_STM32F401
+config FROSTED_ARCH_STM32F401_XE
+    bool "STM32F401xE 512KB"
+    select FROSTED_FLASH_SIZE_512KB
+    select FROSTED_RAM_SIZE_96KB
+    select FROSTED_ARCH_STM32F401
+
+config FROSTED_ARCH_STM32F405_XG
+    bool "STM32F405xG 1MB"
+    select FROSTED_FLASH_SIZE_1MB
+    select FROSTED_RAM_SIZE_192KB
+    select FROSTED_ARCH_STM32F405
+config FROSTED_ARCH_STM32F405_XE
+    bool "STM32F407xE 512KB"
+    select FROSTED_FLASH_SIZE_512KB
+    select FROSTED_RAM_SIZE_192KB
+    select FROSTED_ARCH_STM32F405
+
+config FROSTED_ARCH_STM32F407_XG
+    bool "STM32F407xG 1MB"
+    select FROSTED_FLASH_SIZE_1MB
+    select FROSTED_RAM_SIZE_192KB
+    select FROSTED_ARCH_STM32F407
+config FROSTED_ARCH_STM32F407_XE
+    bool "STM32F407xE 512KB"
+    select FROSTED_FLASH_SIZE_512KB
+    select FROSTED_RAM_SIZE_192KB
+    select FROSTED_ARCH_STM32F407
+    
+config FROSTED_ARCH_STM32F411_XE
+    bool "STM32F411xE 512KB"
+    select FROSTED_FLASH_SIZE_512KB
+    select FROSTED_RAM_SIZE_128KB
+    select FROSTED_ARCH_STM32F411
+config FROSTED_ARCH_STM32F411_XC
+    bool "STM32F411xC 256KB"
+    select FROSTED_FLASH_SIZE_256KB
+    select FROSTED_RAM_SIZE_128KB
+    select FROSTED_ARCH_STM32F411
+
+config FROSTED_ARCH_STM32F429_XE
+    bool "STM32F429xE 512KB"
+    select FROSTED_FLASH_SIZE_512KB
+    select FROSTED_RAM_SIZE_256KB
+    select FROSTED_ARCH_STM32F429
+config FROSTED_ARCH_STM32F429_XG
+    bool "STM32F429xG 1MB"
+    select FROSTED_FLASH_SIZE_1MB
+    select FROSTED_RAM_SIZE_256KB
+    select FROSTED_ARCH_STM32F429
+config FROSTED_ARCH_STM32F429_XI
+    bool "ST