Emerson PMPPC7448 Monitor: Troubleshooting, Download Formats, Binary, Motorola S-Record

Monitor: Troubleshooting

Variable:1	Description: (continued)
pci_memsize	Sets the amount of SDRAM memory made available on the PCI bus. This
	parameter is applicable when the board is either the Monarch or non-
	Monarch. The minimum setting is 16 megabytes. If not set, 128 MB of
	SDRAM are available over PCI.
	Valid options: all, size in hex (0x8000000=128 MB)
sec_bootargs	Sets the boot arguments that are passed into the secondary application
	images when using the bootv command. If not defined, the bootv will
	pass the bootargs configuration parameters into the secondary
	application image.

1.The moninit command does not initialize these variables. Each parameter is only defined if a change from the default setting is desired and is not defined after initialization of the configuration variables.

TROUBLESHOOTING

To bypass the full board initialization sequence, attach a terminal to the console located on the front of the module. Configure the terminal parameters to be:

9600 bps, no parity, 8 data bits, 1 stop bit

Reset the module while holding down the ‘s’ key. Pressing the ‘s’ key forces a configuration based on default environment variables.

DOWNLOAD FORMATS

The PmPPC7448 monitor supports binary and Motorola S-Record download formats, as described in the following sections.

Binary

The binary download format consists of two parts:

•Magic number (which is 0x12345670) + number of sections

•Information for each section including: the load address (unsigned long), the section size (unsigned long), and a checksum (unsigned long) that is the long-word sum of the memory bytes of the data section

Motorola S-Record

S-Record download uses the standard Motorola S-Record format. This includes load address, section size, and checksum all embedded in an ASCII file.

10006757-02 PmPPC7448 User’s Manual

11-25