More changes for buildroot EABI toolchain

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5215 42af7a65-404d-4744-a932-0658087f49c3

misc/buildroot/configs/README.txt

@@ -14,12 +14,12 @@ AVAILABLE CONFIGURATIONS
 ^^^^^^^^^^^^^^^^^^^^^^^^
 
 arm-defconfig
-	Builds an ARM toolchain using gcc 3.4.6
+	Builds an OABI ARM toolchain using gcc 3.4.6
 
 arm7tdmi-defconfig-4.2.4
 arm920t-defconfig-4.2.4
 arm926t-defconfig-4.2.4
-	Builds an ARM toolchain using gcc 4.2.4.  This configuration
+	Builds an OABI ARM toolchain using gcc 4.2.4.  This configuration
 	builds both gcc and g++.  There are three versions: one for 
 	arm7tdmi (armv4t), arm920t (armv4t) and arm926t (arv5t) because
 	of differences in the way that soft floating is handled in between
@@ -48,7 +48,7 @@ arm926t-defconfig-4.2.4
 
 arm920t-defconfig-4.3.3
 arm7tdmi-defconfig-4.3.3
-	Builds an ARM toolchain using gcc 4.3.3.  These configurations
+	Builds an OABI ARM toolchain using gcc 4.3.3.  These configurations
 	builds both gcc and g++ for the arm7tdmi (armv4t) or the arm920t
 	(armv4t).  These are udates to *-defconfig-4.2.4 (see notes above).
 
@@ -62,6 +62,10 @@ cortexm3-defconfig-4.3.3
 	Builds an OABI ARM toolchain for the Cortex-M3 using gcc 4.3.3.
 	This configuration builds gcc, g++ and the NXFLAT toolchain.
 
+cortexm3-eabi-defconfig-4.6.3
+        Builds an EABI ARM toolchain for the Cortex-M3 using gcc 4.6.3.
+        This configuration builds gcc, g++ and the NXFLAT toolchain.
+
 cortexm3-defconfig-nxflat
 arm926t-defconfig-nxflat
 	This configuration build an NXFLAT toolchain (only) for

misc/buildroot/configs/arm920t-eabi-defconfig-4.5.2

@@ -61,7 +61,7 @@ BR2_NUTTX_DIR="$(TOPDIR)/../../nuttx"
 BR2_TOPDIR_PREFIX=""
 BR2_TOPDIR_SUFFIX=""
 BR2_GNU_BUILD_SUFFIX="pc-elf"
-BR2_GNU_TARGET_SUFFIX="eabi"
+BR2_GNU_TARGET_SUFFIX="nuttx-eabi"
 # BR2_PREFER_IMA is not set
 
 #

misc/buildroot/configs/arm926t-defconfig-4.3.3

@@ -59,7 +59,7 @@ BR2_STAGING_DIR="$(BUILD_DIR)/staging_dir"
 BR2_NUTTX_DIR="$(TOPDIR)/../../nuttx"
 BR2_TOPDIR_PREFIX=""
 BR2_TOPDIR_SUFFIX=""
-BR2_GNU_BUILD_SUFFIX="arm-elf"
+BR2_GNU_BUILD_SUFFIX="pc-elf"
 BR2_GNU_TARGET_SUFFIX="nuttx-elf"
 # BR2_PREFER_IMA is not set
 # BR2_DEPRECATED is not set

misc/buildroot/configs/arm926t-defconfig-nxflat

@@ -59,7 +59,7 @@ BR2_STAGING_DIR="$(BUILD_DIR)/staging_dir"
 BR2_NUTTX_DIR="$(TOPDIR)/../../nuttx"
 BR2_TOPDIR_PREFIX=""
 BR2_TOPDIR_SUFFIX=""
-BR2_GNU_BUILD_SUFFIX="arm-elf"
+BR2_GNU_BUILD_SUFFIX="pc-elf"
 BR2_GNU_TARGET_SUFFIX="nuttx-elf"
 # BR2_PREFER_IMA is not set
 # BR2_DEPRECATED is not set

nuttx/configs/shenzhou/README.txt

@@ -346,6 +346,9 @@ NuttX buildroot Toolchain
      cd tools
      ./configure.sh shenzhou/<sub-dir>
 
+     cd ..
+     make context
+
   2. Download the latest buildroot package into <some-dir>
 
   3. unpack the buildroot tarball.  The resulting directory may
@@ -360,9 +363,21 @@ NuttX buildroot Toolchain
 
   7. make
 
-  8. Edit setenv.h, if necessary, so that the PATH variable includes
+  8. Edit nuttx/.config to select the buildroot toolchain as described above
+     and below:
+
+     -CONFIG_STM32_CODESOURCERYW=y
+     +CONFIG_STM32_BUILDROOT=y
+
+  9. Edit setenv.h, if necessary, so that the PATH variable includes
      the path to the newly built binaries.
 
+     -export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery G++ Lite/bin"
+     +#export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery G++ Lite/bin"
+
+     -#export TOOLCHAIN_BIN="${WD}/../misc/buildroot/build_arm_nofpu/staging_dir/bin"
+     +export TOOLCHAIN_BIN="${WD}/../misc/buildroot/build_arm_nofpu/staging_dir/bin"
+
   See the file configs/README.txt in the buildroot source tree.  That has more
   detailed PLUS some special instructions that you will need to follow if you are
   building a Cortex-M3 toolchain for Cygwin under Windows.

nuttx/configs/shenzhou/nsh/Make.defs

@@ -84,7 +84,8 @@ ifeq ($(CONFIG_STM32_BUILDROOT),y)
   # NuttX buildroot under Linux or Cygwin
   CROSSDEV = arm-nuttx-eabi-
   ARCROSSDEV = arm-nuttx-eabi-
-  ARCHCPUFLAGS = -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
+# ARCHCPUFLAGS = -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
   MAXOPTIMIZATION = -Os
 endif
 

nuttx/configs/shenzhou/nxwm/Make.defs

@@ -84,7 +84,8 @@ ifeq ($(CONFIG_STM32_BUILDROOT),y)
   # NuttX buildroot under Linux or Cygwin
   CROSSDEV = arm-nuttx-eabi-
   ARCROSSDEV = arm-nuttx-eabi-
-  ARCHCPUFLAGS = -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
+# ARCHCPUFLAGS = -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
   MAXOPTIMIZATION = -Os
 endif