Setup -- Preparing the MPC5554DEMO board for eCos Development
Overview
In a typical development environment, the MPC5554DEMO board boots from
flash into the RedBoot ROM monitor. eCos applications are configured
for RAM startup and then downloaded and run on the board via the
debugger powerpc-eabi-gdb. Preparing the board therefore usually involves
programming a suitable RedBoot image into flash memory.
The following RedBoot configurations are supported:
Configuration
Description
Use
File
ROM
RedBoot running from on-chip ROM
MPC5554DEMO_redboot_ROM.ecm
MPC5554DEMO_redboot_ROM.bin
RAM
RedBoot running in external RAM
MPC5554DEMO_redboot_RAM.ecm
MPC5554DEMO_redboot_RAM.bin
JTAG
RedBoot running in external RAM, loaded by JTAG
MPC5554DEMO_redboot_JTAG.ecm
MPC5554DEMO_redboot_JTAG.bin
For serial communications, all versions run with 8 bits, no parity,
and 1 stop bit at 38400 baud. The baud rate can be changed using the
flash configuration console baud rate option. RedBoot also supports
flash management.
Initial Installation
The simplest approach to installing RedBoot is to make use of the
eSys Flasher utility and the P&E Wiggler shipped
with the board. The reader is referred to the documentation for this
utility for details of its use; the following is a simple step-by-step
guide to using it to install RedBoot on the board:
Install the eSys Flasher utility on a suitable PC
running Windows XP.
Copy MPC5554DEMO_redboot_ROM.srec to a suitable
location on the Windows PC.
Connect a straight-through (not null modem) serial cable between the
COM-1 serial port of the board and a serial port on a convenient host
(which need not be the PC running eSys
Flasher). Run a terminal emulator (Hyperterm or minicom) at
38400 baud.
Connect the P&E Wiggler to the MPC5554DEMO board and via a USB cable
to the Windows PC. Connect the power supply to the MPC5554DEMO board
and power it on. At some point during this process XP may ask you to
install a device driver. The necessary files will have been installed
with the utility, so just follow the directions to install the driver.
Start eSys Flasher and select "P&E Wiggler (USB)"
from the initial dialog. If the program connects to the board then the
MCU and Part ID should be displayed at the top right of the next dialog.
Click on the "Program Flash" button. Select "S-Record" in the
following dialog (and optionally "Verify after Program"), and press
"Program". In the "Open" dialog navigate to where the
MPC5554DEMO_redboot_ROM.srec file is located and
select it. The utility will now erase, program and optionally verify
the flash. When finished, press the "Close" button to exit the utility.
Pressing the reset button on the board should cause RedBoot to start
up and display the following output:
+**Warning** FLASH configuration checksum error or invalid key
Use 'fconfig -i' to [re]initialize database
RedBoot(tm) bootstrap and debug environment [ROM]
Non-certified release, version UNKNOWN - built 18:06:16, Nov 26 2007
Platform: MPC5554DEMO (PowerPC MPC5554)
Copyright (C) 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
Copyright (C) 2003, 2004, 2005, 2006, 2007 eCosCentric Limited
RAM: 0x20000000-0x20080000, [0x20006b88-0x20051000] available
FLASH: 0x00000000-0x001fffff, 1 x 0x4000 blocks, 2 x 0xc000 blocks, 1 x 0x4000 blocks, 2 x 0x10000 blocks, 14 x 0x20000 blocks
RedBoot>
RedBoot's flash management and configuration should be initialized as
follows:
RedBoot> fis init
About to initialize [format] FLASH image system - continue (y/n)? y
*** Initialize FLASH Image System
... Unlocking from 0x001e0000-0x001fffff: .
... Erase from 0x001e0000-0x001fffff: .
... Program from 0x20060000-0x20080000 to 0x001e0000: .
... Locking from 0x001e0000-0x001fffff: .
RedBoot> fconfig -i
Initialize non-volatile configuration - continue (y/n)? y
Run script at boot: false
Update RedBoot non-volatile configuration - continue (y/n)? y
... Unlocking from 0x001e0000-0x001fffff: .
... Erase from 0x001e0000-0x001fffff: .
... Program from 0x20060000-0x20080000 to 0x001e0000: .
... Locking from 0x001e0000-0x001fffff: .
RedBoot>
Rebuilding RedBoot
Should it prove necessary to rebuild a RedBoot binary, this is done
most conveniently at the command line. The steps needed to rebuild the
the ROM version of RedBoot for the MPC5554DEMO are:
$ mkdir redboot_mpc5554demo_rom
$ cd redboot_mpc5554demo_rom
$ ecosconfig new mpc5554demo redboot
$ ecosconfig import $ECOS_REPOSITORY/hal/powerpc/mpc5554demo/VERSION/misc/mpc5554demo_redboot_ROM.ecm
$ ecosconfig resolve
$ ecosconfig tree
$ make
At the end of the build the install/bin subdirectory should contain
the file redboot.srec.
