ARM and ARMv7-M ELF support; STM32F4Discovery ELF loader test configuration

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5264 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 61 insertions, 23 deletions

diff --git a/nuttx/configs/stm32f4discovery/README.txt b/nuttx/configs/stm32f4discovery/README.txt
index dc25b220e..d1a55daa9 100644
--- a/nuttx/configs/stm32f4discovery/README.txt
+++ b/nuttx/configs/stm32f4discovery/README.txt
@@ -982,43 +982,81 @@ can be selected as follow:
 
 Where <subdir> is one of the following:
 
+  elf:
+  ---
+
+    This configuration derives from the ostest configuration.  It has
+    been modified to us apps/examples/elf in order to test the ELF
+    loader.
+
+    NOTES:
+ 
+    1. This configuration uses the mconf-based configuration tool.  To
+       change this configuration using that tool, you should:
+
+       a. Build and install the mconf tool.  See nuttx/README.txt and
+          misc/tools/
+
+       b. Execute 'make menuconfig' in nuttx/ in order to start the
+          reconfiguration process.
+
+    2. Default toolchain:
+
+       CONFIG_STM32_CODESOURCERYW=y  : CodeSourcery under Windows
+
+    3. By default, this project assumes that you are *NOT* using the DFU
+       bootloader.
+ 
   ostest:
   ------
     This configuration directory, performs a simple OS test using
-    examples/ostest.  By default, this project assumes that you are
-    using the DFU bootloader.
+    apps/examples/ostest.
 
-    Default toolchain:
+    NOTES:
+ 
+    1. This configuration uses the mconf-based configuration tool.  To
+       change this configuration using that tool, you should:
 
-    CONFIG_STM32_CODESOURCERYL=y  : CodeSourcery under Linux / Mac OS X
+       a. Build and install the mconf tool.  See nuttx/README.txt and
+          misc/tools/
 
-    If you use the Atollic toolchain, then the FPU test can be enabled in the
-    examples/ostest by adding the following your NuttX configuration file:
+       b. Execute 'make menuconfig' in nuttx/ in order to start the
+          reconfiguration process.
+
+    2. Default toolchain:
+
+       CONFIG_STM32_CODESOURCERYL=y  : CodeSourcery under Linux / Mac OS X
+
+    3. By default, this project assumes that you are *NOT* using the DFU
+       bootloader.
+ 
+    4. If you use the Atollic toolchain, then the FPU test can be enabled in the
+      examples/ostest by adding the following your NuttX configuration file:
 
-     -CONFIG_ARCH_FPU=n              : Enable FPU support
-     +CONFIG_ARCH_FPU=y
+      -CONFIG_ARCH_FPU=n              : Enable FPU support
+      +CONFIG_ARCH_FPU=y
 
-     -CONFIG_STM32_CODESOURCERYW=y   : Disable the CodeSourcery toolchain
-     +CONFIG_STM32_CODESOURCERYW=n
+      -CONFIG_STM32_CODESOURCERYW=y   : Disable the CodeSourcery toolchain
+      +CONFIG_STM32_CODESOURCERYW=n
 
-     -CONFIG_STM32_ATOLLIC_LITE=n   : Enable *one* the Atollic toolchains
-      CONFIG_STM32_ATOLLIC_PRO=n
-     -CONFIG_STM32_ATOLLIC_LITE=y   : The "Lite" version
-      CONFIG_STM32_ATOLLIC_PRO=n    : The "Pro" version
+      -CONFIG_STM32_ATOLLIC_LITE=n   : Enable *one* the Atollic toolchains
+       CONFIG_STM32_ATOLLIC_PRO=n
+      -CONFIG_STM32_ATOLLIC_LITE=y   : The "Lite" version
+       CONFIG_STM32_ATOLLIC_PRO=n    : The "Pro" version
 
-     -CONFIG_INTELHEX_BINARY=y       : Suppress generation FLASH download formats
-     +CONFIG_INTELHEX_BINARY=n       : (Only necessary with the "Lite" version)
+      -CONFIG_INTELHEX_BINARY=y       : Suppress generation FLASH download formats
+      +CONFIG_INTELHEX_BINARY=n       : (Only necessary with the "Lite" version)
 
-     -CONFIG_HAVE_CXX=y              : Suppress generation of C++ code
-     +CONFIG_HAVE_CXX=n              : (Only necessary with the "Lite" version)
+      -CONFIG_HAVE_CXX=y              : Suppress generation of C++ code
+      +CONFIG_HAVE_CXX=n              : (Only necessary with the "Lite" version)
 
-     -CONFIG_SCHED_WAITPID=y         : Enable the waitpid() API needed by the FPU test
-     +CONFIG_SCHED_WAITPID=n
+      -CONFIG_SCHED_WAITPID=y         : Enable the waitpid() API needed by the FPU test
+      +CONFIG_SCHED_WAITPID=n
 
-    The FPU test also needs to know the size of the FPU registers save area in
-    bytes (see arch/arm/include/armv7-m/irq_lazyfpu.h):
+      The FPU test also needs to know the size of the FPU registers save area in
+      bytes (see arch/arm/include/armv7-m/irq_lazyfpu.h):
 
-     -CONFIG_EXAMPLES_OSTEST_FPUSIZE=(4*33)
+      -CONFIG_EXAMPLES_OSTEST_FPUSIZE=(4*33)
  
   nsh:
   ---