[U-Boot-Users] u-boot on blackfin problems loading linux kernel
Hi, Ive downloaded u-boot 1.1.6 sources and modified them to the extend that I can figure out to fit our custom blackfin board. Im able to start u-boot by loading it to target using visualdsp++ and in the u-boot prompt I can load hello world example from a connected cf disk. But the linux kernel does not run... Im sure the kernel is ok, aswell as the hardware (tested with other bootloader and works sound). Now how do I debug this ?, is it possible that I have missed out some needed change in the source ? I have access to a jtag device to trace...but im not sure how I should use it to find out the problem.
The hardware features the following bf533 cpu @ 400 Mhz core 100 mhz ram . 16mb ram 2mb flash
Not sure about the following option TEXT_BASE = 0x00600000 I grabbed it from the older bootloader...how do I tell it its "correct" ? I have followed this guide for porting the source: http://docs.blackfin.uclinux.org/doku.php?id=customizing_u-boot_for_your_own... However I have not modified cpu/bf533/cpu.c , should I ? and what should I do in there?
I should note that I also tried the u-boot source from blackfin.uclinux.org but I had even less luck running it, console works very poorly with their source (double characters apearing etc, ide not working ).
//Any help is appriciated
- Matty
And this is how it all looks: boot>ide res Reset IDE: Bus 0: OK Device 0: Model: STI Flash 7.2.0 Firm: 12/15/04 Ser#: STI1J80505285182323 Type: Hard Disk Capacity: 122.5 MB = 0.1 GB (250880 x 512) boot>fatload ide 0:1 0x00800000 a/helloworld reading a/helloworld 7813 bytes read boot>bootelf 0x00800000 Loading .text @ 0x00001000 (312 bytes) Loading .rodata @ 0x00001138 (151 bytes) ## Starting application at 0x00001000 ... Example expects ABI version 3 Actual U-Boot ABI version 3 Hello World argc = 1 argv[0] = "0x00800000" argv[1] = "<NULL>" Hit any key to exit ...
## Application terminated, rc = 0x0 boot>fatload ide 0:1 0x00800000 b/linux reading b/linux 1576768 bytes read boot>bootelf 0x00800000 Loading .text @ 0x00001000 (1076368 bytes) Exception! Exception!
_________________________________________________________________ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
On 1/29/07, matti h sinking_wasa@hotmail.com wrote:
Hi, Ive downloaded u-boot 1.1.6 sources and modified them to the extend that I can figure out to fit our custom blackfin board. Im able to start u-boot by loading it to target using visualdsp++ and in the u-boot prompt I can load hello world example from a connected cf disk. But the linux kernel does not run... Im sure the kernel is ok, aswell as the hardware (tested with other bootloader and works sound). Now how do I debug this ?, is it possible that I have missed out some needed change in the source ? I have access to a jtag device to trace...but im not sure how I should use it to find out the problem.
The hardware features the following bf533 cpu @ 400 Mhz core 100 mhz ram . 16mb ram 2mb flash
Not sure about the following option TEXT_BASE = 0x00600000 I grabbed it from the older bootloader...how do I tell it its "correct" ? I have followed this guide for porting the source: http://docs.blackfin.uclinux.org/doku.php?id=customizing_u-boot_for_your_own... However I have not modified cpu/bf533/cpu.c , should I ? and what should I do in there?
I should note that I also tried the u-boot source from blackfin.uclinux.org but I had even less luck running it, console works very poorly with their source (double characters apearing etc, ide not working ).
//Any help is appriciated
- Matty
And this is how it all looks: boot>ide res Reset IDE: Bus 0: OK Device 0: Model: STI Flash 7.2.0 Firm: 12/15/04 Ser#: STI1J80505285182323 Type: Hard Disk Capacity: 122.5 MB = 0.1 GB (250880 x 512) boot>fatload ide 0:1 0x00800000 a/helloworld reading a/helloworld 7813 bytes read boot>bootelf 0x00800000 Loading .text @ 0x00001000 (312 bytes) Loading .rodata @ 0x00001138 (151 bytes) ## Starting application at 0x00001000 ... Example expects ABI version 3 Actual U-Boot ABI version 3 Hello World argc = 1 argv[0] = "0x00800000" argv[1] = "<NULL>" Hit any key to exit ...
## Application terminated, rc = 0x0 boot>fatload ide 0:1 0x00800000 b/linux reading b/linux 1576768 bytes read boot>bootelf 0x00800000 Loading .text @ 0x00001000 (1076368 bytes) Exception! Exception!
Firstly, if you run the following steps,
1) tftpboot 0x1000000 linux 2) fatload ide 0:1 0x800000 b/linux 3) cmp.b 0x800000 0x1000000 $(filesize)
What result did you get?
Actually, we've already upgraded u-boot to 1.1.6. The access info is as follows: http://blackfin.uclinux.org/gf/project/u-boot/scmsvn If you want to checkout 1.1.6, you can do: svn checkout --username anonymous http://blackfin.uclinux.org/svn/u-boot/trunk/u-boot-1.1.6 u-boot-1.1.6
And Loading kernel from CF card is included in our test cases, Here is one doc: http://docs.blackfin.uclinux.org/doku.php?id=using_cf_flash_card_disk_with_u...
Let me know how are things going on your side,
Thanks, -Aubrey
participants (2)
-
Aubrey Li -
matti h