Comtrol eCos - Manual (Page 270)

Chapter 5. Installation and Testing
Configuration Mode Description File
RAM [RAM] RedBoot running from
RAM with RedBoot in the
flash boot sector. redboot_RAM.ecm
Initial Installation Method
The Solution Engine ships with the Hitachi boot monitor in EPROM which allows for initial programming of
RedBoot:
1. Set switches SW5-3 and SW5-4 to ON [boot from EPROM]
2. Connect a serial cable to COM1 and power up the board.
3. After the boot monitor banner, invoke the flash download/program command:
Ready > fl
4. The monitor should now ask for input:
Flash ROM data copy to RAM
Please Send A S-format Record
At this point copy the RedBoot ROM SREC file to the serial port:
$ cat redboot_ROM.eprom.srec > /dev/ttyS0
Eventually you should see something like
Start Addrs = A1000000
End Addrs = A1xxxxxx
Transfer complete
from the monitor.
5. Set switch SW5-3 to OFF [boot from flash] and reboot the board. You should now see the RedBoot banner.
Special RedBoot Commands
The exec command which allows the loading and execution of Linux kernels is supported for this board (see the
Section called Executing Programs from RedBoot in Chapter 2 ). The exec parameters used for the SE7751 are:
-b < addr>
Parameter block address. This is normally the first page of the kernel image and defaults to 0x8c101000
-i < addr>
Start address of initrd image
-j < size>
Size of initrd image
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