noMMU Linux/M32R

• About noMMU Linux/M32R
• How to build Tools and Libraries
• About FLAT Binary

How to use noMMU Linux/M32R

Snap Shot Informations (2005.12.20)

• m32r-elf tools (gcc-3.4 branch binary、include elf2flt tools)
• sdiserver 2.8 statically binary (2006/01/10)
• uClibc 0.9.27 binary (2005/11/23)
• root file system (with busybox)(2005/11/23)
• elf2flt sources
• uClibc 0.9.27 sources (2005/11/23) ChangeLog.uClibc patch for m32r sample config
• busybox 1.00 sources (2005/11/23) patch for httpd demo sample config

  OAKS32R

  • kernel 2.6.12-rc1 sources Sample zImage Sample vmlinux
  • Sample .gdbinit
  • For OAKS32R g00ff sources (include objects when I built)

  M32104UT

  • kernel 2.6.12-rc1-nommu-20051220 sources Sample config Sample zImage Sample vmlinux
  • Sample .gdbinit

How to build Tools and Libraries

elf2flt

1. Install m32r-elf tools

  % cd /usr/local
  % bzip2 -cd m32r-elf.20040210-3.2.tar.bz2 | tar xf -
  % ln -s m32r-elf.20040210-3.2 m32r-elf-3.2

  % bzip2 -cd binutils-2.13_src_20040210.tar.bz2 | tar xf -
  % cd binutils
  % mkdir build
  % cd build
  % ../src/configure --target=m32r-elf --prefix=/usr/local/m32r-elf-3.2
  % make

  % bzip2 -cd elf2flt-20040409.tar.bz2 | tar xf -
  % mkdir build
  % cd build

        Depend on the environment.
         binutils_src=/xxx/binutils/src           ... source directory of binutils
         binutils_build=/xxx/binutils/build       ... directory to build binutils
         binutils_prefix=/usr/local/m32r-elf-3.2  ... m32r-elf toos prefix

  % ../configure --target=m32r-elf --srcdir=../elf2flt \
                 --prefix=${binutils_prefix} \
                 --with-binutils-include-dir=${binutils_src}/include \
                 --with-bfd-include-dir=${binutils_build}/bfd \
                 --with-libbfd=${binutils_build}/bfd/libbfd.a \
                 --with-libiberty=${binutils_prefix}/lib/libiberty.a
  % make
  % make install

uClibc

  % bzip2 -cd uClibc-0.9.26-20040507.tar.bz2 | tar xf -
  % cd uClibc-0.9.26
  % make menuconfig

      Specify the following items.
        Target Architecture Features and Options ->
          Target CPU has a memory management unit (MMU)   ... Disable
           Linux Kernel header location  ... Depend on the environment
        General Library Settings ->
          Malloc returns live pointer for malloc(0)   ... Enable

  % set path=($path /usr/local/m32r-elf-3.2/bin)
  % make
  % make install

About FLAT binary

About FLAT Format   http://www.beyondlogic.org/uClinux/bflt.htm

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