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27 Oct 1999, revised on 2000.01.28

How to build and install the GDB module on the PID

Make GDB module

~~~~~~~~~~~~~~~

Configure and build using the 'stubs' template for the PID

target. These are the necessary CLI instructions. It can also be done

from the Configtool by selecting the appropriate templates.

 % cd /tmp

 % mkdir stubs

 % cd stubs

 % ecosconfig new pid stubs

 % ecosconfig tree

 % make

This will install some files in ./install/bin:

 cygmon.elf:   The built stubs image

 cygmon.bin:   The image converted to binary (suitable for burning to ROM)

 cygmon.img:   The relocated ELF image (suitable for FLASH writing, see below)

Make FLASH tool

~~~~~~~~~~~~~~~

Again, these are the necessary CLI instructions. It can also be done

from the Configtool by selecting the appropriate templates, and

enabling the option.

 % cd /tmp

 % mkdir pid-flash

 % cd pid-flash

 % ecosconfig new pid

 % 

      --- ecos.ecc.orig       Fri Jan 28 11:21:43 2000

      +++ ecos.ecc            Fri Jan 28 11:22:01 2000

      @@ -150,7 +150,7 @@

       cdl_option CYGBLD_BUILD_FLASH_TOOL {

           # Flavor: bool

           # No user value, uncomment the following line to provide one.

      -    # user_value 0

      +    user_value 1

           # value_source default

           # Default value: 0

           # Requires:  CYG_HAL_STARTUP == "RAM"

 % ecosconfig resolve

 % ecosconfig tree

 % make

The flash tool is installed in ./install/bin

Prepare board for eCos

~~~~~~~~~~~~~~~~~~~~~~

 1. Set jumper 7-8 on LK6   [using the Angle code in the 16 bit EPROM]

 2. Set jumper 5-6 on LK6   [select 8bit ROM mode]

 3. Set jumper LK18         [ROM remap - this is also required for eCos]

 4. Set S1 to 0-0-1-1       [20MHz operation]

Program FLASH

~~~~~~~~~~~~~

 1. Download the image onto the PID board:

      % cd /tmp

      % arm-elf-gdb -nw stubs/install/bin/gdb_image.img

        (gdb) target rdi s=

        Angel Debug Monitor V1.04 (Advanced RISC Machines SDT 2.11a) for PID

        Built with Serial(x1), Parallel, DCC

        Rebuilt on Apr  7 1998 at 22:20:43

        Serial Rate:   9600

        Connected to ARM RDI target.

        (gdb) load

        Loading section .rom_vectors, size 0x60 lma 0x60000

        Loading section .text, size 0xeea8 lma 0x60060

        Loading section .rodata, size 0x304c lma 0x6ef08

        Loading section .data, size 0x7f8 lma 0x71f54

        Start address 0x60060 , load size 75596

        Transfer rate: 5548 bits/sec.

        (gdb) quit

   This will download the stubs onto the board at 0x60000..0x80000

   Use /dev/ttyS0, COM1 or similar for the  name.

 2. Now download the FLASH programmer tool

      % arm-elf-gdb -nw pid-flash/install/bin/prog_flash.img

        (gdb) target rdi s=

        Angel Debug Monitor V1.04 (Advanced RISC Machines SDT 2.11a) for PID

        Built with Serial(x1), Parallel, DCC

        Rebuilt on Apr  7 1998 at 22:20:43

        Serial Rate:   9600

        Connected to ARM RDI target.

        (gdb) load

        Loading section .rom_vectors, size 0x60 lma 0x4000

        Loading section .text, size 0x4964 lma 0x4060

        Loading section .rodata, size 0x384 lma 0x89c4

        Loading section .data, size 0x28c lma 0x8d48

        Start address 0x4060 , load size 20436

        Transfer rate: 5449 bits/sec.

        (gdb) cont

 3. The FLASH tool will output some text on the board serial port B at

    38400 baud:

       ARM eCos

       FLASH here!

       manuf: 8, device: 40

       Error: Wrong Manufaturer: 08

       ... Please change FLASH jumper

 4. This text is repeated until you remove the jumper 7-8 on LK6. Then

    the output should be:

       manuf: 1F, device: A4

       AT29C040A recognised

       About to program FLASH using data at 60000..80000

       *** Press RESET now to abort!

 5. You have about 10 seconds to abort the operation by pressing

    reset. After this timeout, the FLASH programming happens:

      ...Programming FLASH

      All done!

 6. Quit/kill the GDB process which will hang.

 7. Next time you reset the board, the stub will be in control, communicating

    on serial port A at 38400 baud. See documentation for further details

    on how to connect with GDB.

Big-Endian operation

~~~~~~~~~~~~~~~~~~~~

  1) If the board is to be used in big-endian mode, the stub should be

     configured for platform 'pidbe' instead of 'pid'.

 2a) If a big-endian rom controller is installed on the board, the

     programming of a new stub into flash is covered in the ARM PID

     manual.

 2b) If a big-endian rom controller is _not_ used, this is what you

     must do:

       1) Follow the above instructions (including jumper settings) ,

          but instead of building and using the 'prog_flash' FLASH

          tool, use the 'prog_flash_BE_image_LE_system' FLASH tool

          (build it by enabling CYGBLD_BUILD_FLASH_TOOL_BE)

       2) Instead of resetting the board after the FLASH has been

          programmed, switch off the power and enable jumper LK4.

     If you have to re-program the FLASH later, you can follow the

     steps above again, but also disable jumper LK4 when changing the

     other jumpers.