Alexander Povolotsky writes:
Alexander> Hello, I was trying to use Code Warrior 8.14 + WireTAP to Alexander> program the 66 MHz elf U-boot bootloader image (supplied Alexander> on the Arabella 2.0 CD-ROM "Linux for Motorola 82xx") Alexander> onto the flash of the brand new PQ2FADS_VR board with Alexander> MPC8275 processor. While the programming of the flash Alexander> seemingly completed without errors -
Seemingly or surely? CodeWarrior's flash programmer have got "Verify" button. Use it to check if flash really contains correct image.
Alexander> however the bootloader is not functional ... - upon the Alexander> power reset of the board the serial driver (at least) of Alexander> the bootloader was not functional (the neither one of the Alexander> board's two serial leds was not "up" and there was no Alexander> connection over HyperTerminal through either one of two Alexander> board's serial connectors). Do you have any Alexander> recommendations/suggestions with regards to this issue ?
Since our customers use this image on different PQ2FADS boards (including VR), the problem must be in your setup, probably in the flash programmer. BTW, there is absolutely no difference between ZU and VR boards except the default main oscillator frequency.
Alexander> Additional problem I have which I didn't mention ... but Alexander> may be it is part of the same problem ... - though I Alexander> changed my laptop's parallel port settings to ECP - after Alexander> each "successful" flash programming - I am loosing JTAG Alexander> connection with the board - the only way to fix it is to Alexander> change SW6 deep swich "boot source" position ...
SW6 has nothing to do with flash programming unless you use flash as boot source and the "successful" flash programming erases the HRCW. If this is the case, the programming setup is definitely wrong because HRCW resides in first flash sector and the U-Boot - in 29th (in fact, 28th because sectors are numbered starting from zero). At what address are you trying to burn the image?