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Diffstat (limited to 'nuttx/configs/ekk-lm3s9b96/README.txt')
| -rw-r--r-- | nuttx/configs/ekk-lm3s9b96/README.txt | 61 |
1 files changed, 55 insertions, 6 deletions
diff --git a/nuttx/configs/ekk-lm3s9b96/README.txt b/nuttx/configs/ekk-lm3s9b96/README.txt index 539eb0c26..16568dbda 100644 --- a/nuttx/configs/ekk-lm3s9b96/README.txt +++ b/nuttx/configs/ekk-lm3s9b96/README.txt @@ -10,7 +10,9 @@ Contents Development Environment GNU Toolchain Options IDEs - NuttX buildroot Toolchain + NuttX EABI "buildroot" Toolchain + NuttX OABI "buildroot" Toolchain + NXFLAT Toolchain Stellaris EKK-LM3S9B96 Evaluation Kit Configuration Options Configurations @@ -186,8 +188,8 @@ IDEs Startup files will probably cause you some headaches. The NuttX startup file is arch/arm/src/lm3s/lm3s_vectors.S. -NuttX buildroot Toolchain -^^^^^^^^^^^^^^^^^^^^^^^^^ +NuttX EABI "buildroot" Toolchain +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ A GNU GCC-based toolchain is assumed. The files */setenv.sh should be modified to point to the correct path to the Cortex-M3 GCC toolchain (if @@ -210,7 +212,7 @@ NuttX buildroot Toolchain 4. cd <some-dir>/buildroot - 5. cp configs/cortexm3-defconfig-4.3.3 .config + 5. cp configs/cortexm3-eabi-defconfig-4.6.3 .config 6. make oldconfig @@ -220,11 +222,58 @@ NuttX buildroot Toolchain the path to the newly built binaries. 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 + details PLUS some special instructions that you will need to follow if you are building a Cortex-M3 toolchain for Cygwin under Windows. - NOTE: This is an OABI toolchain. +NuttX OABI "buildroot" Toolchain +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + The older, OABI buildroot toolchain is also available. To use the OABI + toolchain: + + 1. When building the buildroot toolchain, either (1) modify the cortexm3-eabi-defconfig-4.6.3 + configuration to use EABI (using 'make menuconfig'), or (2) use an exising OABI + configuration such as cortexm3-defconfig-4.3.3 + + 2. Modify the Make.defs file to use the OABI converntions: + + +CROSSDEV = arm-nuttx-elf- + +ARCHCPUFLAGS = -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft + -CROSSDEV = arm-nuttx-eabi- + -ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft + +NXFLAT Toolchain +^^^^^^^^^^^^^^^^ + + If you are *not* using the NuttX buildroot toolchain and you want to use + the NXFLAT tools, then you will still have to build a portion of the buildroot + tools -- just the NXFLAT tools. The buildroot with the NXFLAT tools can + be downloaded from the NuttX SourceForge download site + (https://sourceforge.net/projects/nuttx/files/). + + This GNU toolchain builds and executes in the Linux or Cygwin environment. + + 1. You must have already configured Nuttx in <some-dir>/nuttx. + + cd tools + ./configure.sh lpcxpresso-lpc1768/<sub-dir> + + 2. Download the latest buildroot package into <some-dir> + + 3. unpack the buildroot tarball. The resulting directory may + have versioning information on it like buildroot-x.y.z. If so, + rename <some-dir>/buildroot-x.y.z to <some-dir>/buildroot. + + 4. cd <some-dir>/buildroot + + 5. cp configs/cortexm3-defconfig-nxflat .config + + 6. make oldconfig + + 7. make + + 8. Edit setenv.h, if necessary, so that the PATH variable includes + the path to the newly builtNXFLAT binaries. Stellaris EKK-LM3S9B96 Evaluation Kit Configuration Options ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |