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| -rwxr-xr-x | nuttx/configs/ea3131/README.txt | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/nuttx/configs/ea3131/README.txt b/nuttx/configs/ea3131/README.txt index 9cb78cac1..51059df72 100755 --- a/nuttx/configs/ea3131/README.txt +++ b/nuttx/configs/ea3131/README.txt @@ -162,6 +162,38 @@ Boot Sequence Image Format ^^^^^^^^^^^^ + In order to use the bootrom bootloader, a special header must be added to the + beginning of the binary image that includes information about the binary (things + like the entry point, the size, and CRC's to verify the image. + + NXP provides a Windows program to append such a header to the binary image. + However, (1) that program won't run under Linux, and (2) when I try it under + WinXP, Symantec immediately claims that the program is misbehaving and deletes + it! + + To work around both of these issues, I have created a small program under + configs/ea3131/tools to add the header. This program can be built under + either Linux or Cygwin (and probably other tool environments as well). That + tool can be built as follows: + + - cd configs/ea3131/tools + - make + + Then, to build the NuttX binary ready to load with the bootloader, just + following these steps: + + - cd tools/ # Configure Nuttx + - ./configure.sh ea3131/ostest # (using the ostest configuration for this example) + - cd .. # Set up environment + - . ./setenv.sh # (see notes below) + - make # Make NuttX. This will produce nuttx.bin + - mklpc.sh # Make the bootloader binary (nuttx.lpc) + + NOTE: setenv.sh just sets up pathes to the toolchain and also to + configs/ea3131/tools where mklpc.sh resides. Use of setenv.sh is optional. + If you don't use setenv.sh, then just set your PATH variable appropriately or + use the full path to mklpc.sh in the final step. + ARM/EA3131-specific Configuration Options ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ CONFIG_ARCH - Identifies the arch/ subdirectory. This should |