notes

ecos为实时嵌入式操作系统

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The contents of this file are subject to the Cygnus eCos Public License
Version 1.0 (the "License"); you may not use this file except in
compliance with the License.  You may obtain a copy of the License at
http://sourceware.cygnus.com/ecos

Software distributed under the License is distributed on an "AS IS"
basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the
License for the specific language governing rights and limitations under
the License.

The Original Code is eCos - Embedded Cygnus Operating System, released
September 30, 1998.

The Initial Developer of the Original Code is Cygnus.  Portions created
by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions.  All Rights Reserved.
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15 Jan 1999

How to build and install the GDB module on the PID

1. Configure a minimal eCos system with all packages except 'infra' disabled.
2. Edit <hal/hal.h> to enable GDB:
    #define  CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
    #undef   CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT
    #undef   CYGDBG_HAL_DEBUG_GDB_THREAD_SUPPORT
3. make;make -C hal/arm/pid/current/misc
4. Download the image onto the PID board:
      arm-elf-gdb -nw hal/arm/pid/current/misc/gdb_module.img
   You can connect to the board using either existing GDB stubs or Angel.
   This will download the stubs onto the board at 0x60000..0x64000
5. Configure a separate eCos system with all packages enabled.
6. make misc
7. Now download the FLASH programmer tool
      arm-elf-gdb -nw hal/arm/pid/current/misc/prog_flash
8. Run the tool.  The GDB stubs will now be programmed into the FLASH.

eCos GDB stubs should now be installed and set up as the default monitor when you
run from FLASH.