Siva,
Myself Siva, working on a custom board using MCF5485. We had a typical problem with tftp. We are using u-boot(1.3.3) from Freescale on our
first of all I'd try to use latest code.
board and trying to do tftp of filesize 12MB. Sometime file is getting downloaded into external DDR SDRAM correctly. Sometime u-boot get’s hanged. This problem is observed during cold bootup. When we switch off the board and powered it up, we are facing this problem. If we wait for 1 or 2 minutes after the board get’s powered up, try to do tftp it goes well. After going through your post on internet (http://www.mail-archive.com/u-boot@lists.denx.de/msg00719.html) , I am suspecting this could be problem with our DDR SDRAM controller initialization.
Using memory with single read/write access is very relaxed compared to burst mode access during DMA ops. I've had a plain simple timing violation ... there are lots of dynamic parameters that have to be met. There's no general advice - sorry.
Are you sure that it is a memory problem ? Any obscure crashes running linux or other apps ? If not it's more likely to be a networking issue. R/S-GMII also has strict timing requirements. What about signal integrity issues - are you sure the interface is working fine from an electrical point of view ?
U-boot Ethernet driver uses DMA to transfer the frames. But the serail console log shows some timeouts (T) when the U-boot hangs during transfer.
ok - could be anything.
If we wait for 1 or 2 minutes before doing tftp to get the image into RAM , it is getting downloaded properly. Could you please suggest what exactly you did in your SRAM configuration to fix the problem?
looks like a thermal issue, i.e. electrical problem. Again, this might be either local memory or MII. What kind of network are you using ? I'm not familiar with MCF54xx ...
Get you memory device datasheet and match the dynamic parameters with that of your CPU's memory controller.
Maybe there are others having similar problems with your particular CPU.
Regards, André
Please find the attached log:
U-Boot 1.3.3 (Sep 18 2009 - 10:24:03) CPU: Freescale MCF5485 CPU CLK 200 Mhz BUS CLK 100 Mhz Board: Freescale FireEngine 5485 EVB DRAM: 128 MB POST: Checking Ram...PASSED. FLASH: 16 MB In: serial Out: serial Err: serial Net: rxbd f0012000 txbd f0012100 rxbd f0012870 txbd f0012970 FEC0, FEC1 Hit any key to stop autoboot: 5
-> printenv bootdelay=5 baudrate=115200 netmask=255.255.255.0 hostname=M548xEVB netdev=eth0 loadaddr=1000 u-boot=u-boot.bin load=tftp ${loadaddr) ${u-boot} kernel=u-boot.bin load=tftp ${loadaddr) ${kernel} upd=run load; run prog progboot=prot off 1:0-2;era e0000000 e005ffff;cp.b ${loadaddr} e0000000 ${filesize}; progkern=prot off 1:4-51;era e0080000 e067ffff;cp.b ${loadaddr} e0080000 ${filesize};save bootargs=console=/dev/console,115200 root=/dev/ram0 rootfstype=romfs ro bootcmd=cp.b e0080000 ${loadaddr} ${filesize};go 2000 ethact=FEC0 ethaddr=00:25:F7:10:00:1F eth1addr=00:25:F7:10:00:20 stdin=serial stdout=serial stderr=serial mem=130560k gatewayip=169.254.0.102 ipaddr=169.254.0.101 serverip=169.254.0.253 filesize=C7FFFF Environment size: 720/131068 bytes -> tftp 10000 image.bin;prot off 1:4-103;era E0080000 E0CFFFFF;cp.b 1000 E0080000 BEEC0F;reset; Using FEC0 device TFTP from server 169.254.0.253; our IP address is 169.254.0.101 Filename 'image.bin'. Load address: 0x10000 Loading: *################################################################# ################################################################# ################################################################# ########################################T ######################### ################################################################# #########################
Thanks, Siva
MATRIX VISION GmbH, Talstrasse 16, DE-71570 Oppenweiler Registergericht: Amtsgericht Stuttgart, HRB 271090 Geschaeftsfuehrer: Gerhard Thullner, Werner Armingeon, Uwe Furtner, Hans-Joachim Reich