Hi all,
we have a pci-to-usb controller(32bit,33MHZ,PCI1 controller, IDSEL 18) on pci bus, we disabled PCI and tried to read the configuration data(vendor and device id) of the usb controller by giving following commands. (0xe0000000 is the CCSR base address)
$mw 0xe0008000 0x80009000 $md 0xe0008004
$0xe0008004 : //hangs here
then it is hanging, when we check the pci signals(frame, idsel, irdy, trdy etc) they seem to be proper, even the chip is responding with its vendor and device id(we could see then on the analyzer). what could be the problem.
following is the u-boot log
U-Boot 2013.01-rc1 (Jan 02 2013 - 16:00:15)
CPU: 8555, Version: 1.1, (0x80710011) Core: E500, Version: 2.0, (0x80200020) Clock Configuration: CPU0:528 MHz, CCB:264 MHz, DDR:132 MHz (264 MT/s data rate), LBC:66 MHz CPM: 264 MHz L1: D-cache 32 kB enabled I-cache 32 kB enabled I2C: ready DRAM: Detected UDIMM 9VDDT6472HY-335F2 512 MiB (DDR1, 64-bit, CL=2, ECC off) Flash: ## Unknown flash on Bank 2 - Size = 0x00000000 = 0 MB 128 MiB L2: 256 KB enabled *** Warning - bad CRC, using default environment
EEPROM: Read failed. In: serial Out: serial Err: serial Net: TSEC0 [PRIME], TSEC1 Hit any key to stop autoboot: 10 9 0 => => mw 0xe0008000 0x80009000 => md 0xe0008004 e0008004: //hangs here
Regards, Ashok