July 2005 - U-Boot

[U-Boot-Users] kernel global variable debug
by Alex shi 07 Jul '05

07 Jul '05

Dear All: My board's cpu is freescale 8247. I debug the linux kernel 2.4.26 with BDI2000 and ppc_6xx-gdb on it. My linux kernel text base on 0xC0000000, so some global variable at 0xCxxxxxxx virtual address. Now the problem is that I can not print the global variable's value, when i use "p" command in gdb: p /x ga. gdb always tell me it's zero, even if I directly print the content in the ga's address. But if I evaluate the ga's value to a local variable in programm, then print it in gdb, it can get me the correct value. It seems the global variable was processed correctly. But Why I can not get the value? where the global variable stored while kernel running? BRG Alexander

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Re: [U-Boot-Users] u-boot support for winCE on OSK board
by Andrea Scian 07 Jul '05

07 Jul '05

Hi Naveen! >Hi, > >Does the u-boot supports winCE? not officially at the moment (of course, Wolfgang correct me if I'm wrong.. ;-) >If i have to support winCE using u-boot, how can i start my work? from the patch below, for example (BTW.. I think it has been removed from the site now..) it should be a good start point to boot WinCE .bin images. This patch adds a u-boot command (bootwince) which can handle WinCE images. >I am using u-boot-1.1.2. >I downloaded a patch from the following location. > >http://www.dave-tech.it/download/misc/sw/zefeer/zwck/u-boot-zwck-0.9.0-cmdb… > >But it is not working on my OSK board. Could any one suggest how to do >it myself. What do you mean by "not working"? Do you have patch problems, build problems or runtime problems? please give me more details and maybe I can help you somehow.. IIRC you have to take care at least of loading address.. Best Regards, Andrea Scian

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[U-Boot-Users] No boot prompt on Ebony 440GP board
by Gregg Lastname 07 Jul '05

07 Jul '05

I have a PPC440GP evaluation board ("Ebony"). I used the buildroot tools from buildroot.uclibc.org to build a cross compiler based on gcc 3.4.4. I then built u-boot by issuing make EBONY_config make which built u-boot without any errors. I then wrote the resulting u-boot.bin file to flash using a JTAG programmer. I set the DIP switches and jumpers according to the README.ebony instructions. When I power the board up, the following console text is generated: ----begin console output----- U-Boot 1.1.2 (Jul 6 2005 - 15:51:04) IBM PowerPC 440 GP Rev. C Board: IBM 440GP Evaluation Board (Ebony) VCO: 600 MHz CPU: 300 MHz PLB: 100 MHz OPB: 50 MHz EPB: 50 MHz I2C: ready DRAM: I2c read: failed 4 I2c read: failed 4 128 MB -----end console output----- and then nothing more happens. No prompt is displayed. I tried the J41/J42 bootstrap corruption directions, but it did not seem to have any effect. Could someone suggest what to do next? I assume I am supposed to receive a prompt that enables me to enter interactive commands. Is that correct? Thanks. Gregg _________________________________________________________________ Dont just search. Find. Check out the new MSN Search! http://search.msn.click-url.com/go/onm00200636ave/direct/01/

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[U-Boot-Users] USB booting...
by Neil Bryan 06 Jul '05

06 Jul '05

I am attempting to boot Linux on a target platform using a USB mass storage device (flash disk) to hold the kernel and the root filesystem. I thought it may be a good idea to replicate the same steps used when booting from a tftp server, i.e. I copy the root filesystem (using an initrd image) to an address in RAM, then copy the kernel to a different address in RAM. Finally bootm with the start address of the kernel. Bootargs will be set during this process. So I created two partitions on the USB flash disk, partion 1 holds the kernel image and partition 2 holds the initrd image. The partition table looks like this: Disk /dev/sdb: 32 MB, 32768000 bytes 2 heads, 32 sectors/track, 1000 cylinders Units = cylinders of 64 * 512 = 32768 bytes Device Boot Start End Blocks Id System /dev/sdb1 1 154 4912 83 Linux /dev/sdb2 155 308 4928 83 Linux My file sizes are: initrd: 1203800 bytes. uImage: 2285056 bytes. The command I want to use to copy the initrd is: usb read 20800000 x y. Where 20800000 is the address for the initrd to be copied to, x will be the block-offest to the start of partition 2 and y will be the size in blocks of the initrd image. Now I need to calculate the block-size based on cylinders, heads, units etc. My questions are, am I making this too complex, is there an easier way to achieve the same result of booting using a USB flash disk with seperate kernel/initrd images? Appologies for the long-winded pre-amble, but I don't know how to ask a question like this without describing the problem. Thanks for any insight, Neil.

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[U-Boot-Users] Problem starting u-boot on Xilinx V2P
by Thorsten Lueck 06 Jul '05

06 Jul '05

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I have a own board with an Virtex V2Pro (V2P30) an want to boot u-boot on the PPC. Starting from the demo-design for the ml300 demo board, I managed to compile u-boot 1.1.1 (1.1.2 fails when running the tcl-script with EDK 7.1) and could download and run u-boot on my PPC. However, u-boot stops after printing U-Boot 1.1.1 (Jul 5 2005 - 16:50:28) ### No HW ID - assuming ML300 DRAM: 128 MB I get no further output afterwards. Another strange thing is, that I only have 32MB RAM on board but not 128MB as the ml300 has. However, I could not find any hardcoded RAM size in the source files for the ml300. Does anybody has an idea? I found the comment : /* * WARNING: this code looks "cleaner" than the PowerPC version, but * has the disadvantage that you either get nothing, or everything. * On PowerPC, you might see "DRAM: " before the system hangs - which * gives a simple yet clear indication which part of the * initialization if failing. */ in the ./lib_i386/board.c, however, there is no appropriate warning in static int init_func_ram (void) of ./lib_ppc/board.c Thanks in advance, Thorsten Lück - -- IfEN - Gesellschaft für Satellitennavigation mbH Dipl. Ing. Thorsten Lück Tel.: +49 8121 2238-25 Fax : +49 8121 2238-11 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFCyqyuQDwjNlk95KYRAmuIAJsFYHOlYn1+MJzg8tNZ1+sJQYhOFwCg5LnR 2HsWS999Jatd1N8w+3kjArg= =kltH -----END PGP SIGNATURE-----

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[U-Boot-Users] Help with mpc8540 pci
by CuiYW 06 Jul '05

06 Jul '05

Hi, I am porting U-Boot to our custom MPC8540 board. But there are some problems on pci. Following is the boot message: ... ... L2 cache enabled: 256KB pci_bus_to_hose() failed pci_bus_to_hose() failed pci_bus_to_hose() failed pci_bus_to_hose() failed PCI Autoconfig: Memory region: [80000000-9fffffff] PCI Autoconfig: I/O region: [e2000000-e2ffffff] PCI Scan: Found Bus 0, Device 15, Function 0 PCI Autoconfig: BAR 0, Mem, size=0x400000, address=0x80000000 PCI Autoconfig: BAR 1, Mem, size=0x800000, address=0x80800000 PCI Autoconfig: BAR 2, I/O, size=0x10, address=0xe2000000 PCI Scan: Found Bus 0, Device 16, Function 0 PCI Autoconfig: BAR 0, Mem, size=0x400000, address=0x81000000 PCI Autoconfig: BAR 1, Mem, size=0x800000, address=0x81800000 PCI Autoconfig: BAR 2, I/O, size=0x10, address=0xe2000010 ... ... Sometimes, U-boot halted after the message: "PCI Autoconfig: I/O region: [e2000000-e2ffffff]". Somebody has the same problem? Could you please give me any advice?

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RE: [U-Boot-Users] Tool chain for armv6
by Woodruff, Richard 06 Jul '05

06 Jul '05

http://www.codesourcery.com/ is a good spot and has done much of the front line work. ARM Ltd also had downloads on their web site. The current u-boot default for 2420 is set to ARMv5 now to allow more compilers to work. There isn't a strong need to have a v6 capable tool chain at this level. The only thing to watch out for is option usage change. There was a recent patch submission to the entire u-boot ARM tree which takes care of that. Regards, Richard W. ________________________________ From: u-boot-users-admin(a)lists.sourceforge.net [mailto:u-boot-users-admin@lists.sourceforge.net] On Behalf Of Elmaleh Aaron-CAE001 Sent: Wednesday, July 06, 2005 7:00 AM To: u-boot-users(a)lists.sourceforge.net Subject: [U-Boot-Users] Tool chain for armv6 Hi, Is anyone knows where i can get a toolchain supporting armV6 ? ( OMAP2420H4 board...) Thanks, Aaron

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[U-Boot-Users] Tool chain for armv6
by Elmaleh Aaron-CAE001 06 Jul '05

06 Jul '05

Hi, Is anyone knows where i can get a toolchain supporting armV6 ? ( OMAP2420H4 board...) Thanks, Aaron

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[U-Boot-Users] Statuc code format for USB response...
by Neil Bryan 06 Jul '05

06 Jul '05

This is a trivial comment, but helpful for developers not expert in debugging USB-related problems. After issuing the following command: U-Boot> usb reset I obtained the following result: USB device not responding, giving up (status=20) The code responsible for this is in ./common/usb.c and shown below: printf("\n USB device not responding, giving up (status=%lX)\n",dev->status); I _believe_ the status code returned is that defined in ./include/usb_defs.h and that my status code of 20 is the value defined by the macro USB_ST_CRC_ERR. The printf uses a %lX format specifier and it would be improved if it was proceeded with an '0x' to inform the developer (me) that this is indeed a hexadecimal value. My suggested change is In ./common/usb.c -------------- - printf("\n USB device not responding, giving up (status=%lX)\n",dev->status) + printf("\n USB device not responding, giving up (status=0x%lX)\n",dev->status) -------------- As I said, I know this is trivial, but every little bit of extra information helps when debugging something that is unfamiliar. Flames and other comments gratefully received! Regards, Neil Bryan.

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[U-Boot-Users] CFG_CMD_SETGETDCR is not correctly used.
by Cedric VINCENT 06 Jul '05

06 Jul '05

Dear Wolfgang. In "common/cmd_dcr.c" : ----------- - #if defined(CONFIG_4xx) && defined(CFG_CMD_SETGETDCR) + #if defined(CONFIG_4xx) && (CONFIG_COMMANDS & CFG_CMD_SETGETDCR) ----------- since CFG_CMD_SETGETDCR is always defined (in "include/cmd_confdefs.h") ! Cedric VINCENT.

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