Re: [microblaze-uclinux] error setting up sdram memory

[Ryan Marotz <rmarotz@xxxxxxxxxx>]

John,

Thank you very much, that solved the problem.  I'm now able to get the 
auto-config.in file to compile uClinux.  However when I run the image, 
it only gets so far then hangs after it prints the Mount cach hash table 
entries.  I believe next it is supposed to print info about the buffer 
cache hash table entries.  Do you have any ideas what I need to be 
looking for in my configuration?  Here is a capture of the boot:

Linux version 2.4.32-uc0 (devel@localhost) (gcc version 3.4.1 ( Xilinx 
EDK 8.2 Build EDK_Im.12 180506 )) #131 Fri Jun 22 01:29:57 EDT 2007
On node 0 totalpages: 8192
zone(0): 8192 pages.
zone(1): 0 pages.
zone(2): 0 pages.
CPU: MICROBLAZE
Kernel command line: ¸
Console: xmbserial on UARTLite
Calibrating delay loop... 3.46 BogoMIPS
Memory: 32MB = 32MB total
Memory: 28932KB available (1324K code, 2149K data, 64K init)
Dentry cache hash table entries: 4096 (order: 3, 32768 bytes)
Inode cache hash table entries: 2048 (order: 2, 16384 bytes)
Mount cache hash table entries: 512 (order: 0, 4096 bytes)

-Ryan

John Williams wrote:
> Hi Ryan,
>
> A couple of things:
>
> You'd be better off with the newer, PetaLinux BSP tools qather than the 
> old uClinux ones, but that's up to you.
>
> Also, multiCPU is not officially supported, but it can be done.
>
> But, specific to your problem , please see my comments below:
>
> > BEGIN opb_ddr
>
> >  PARAMETER C_MEM0_BASEADDR = 0x24000000
> >  PARAMETER C_MEM0_HIGHADDR = 0x25FFFFFF
>
> > END
>
> opb_ddr is a banked memory controller ...
>
>
> > BEGIN opb_sdram
>
> >  PARAMETER C_BASEADDR = 0x24000000
> >  PARAMETER C_HIGHADDR = 0x25FFFFFF
>
> opb_sdram is not...
>
> > BEGIN OS
> >  PARAMETER OS_NAME = uclinux
> >  PARAMETER OS_VER = 1.00.d
> >  PARAMETER PROC_INSTANCE = microblaze_0
> >  PARAMETER lmb_memory = dlmb_cntlr_0
> >  PARAMETER main_memory_bank = 0
> >  PARAMETER main_memory = sdram_0
>
> so specifying a bank number of the sdram_0 (opb_ddr) controller makes 
> sense...
>
> >  PARAMETER stdin = RS232_0
> >  PARAMETER stdout = RS232_0
> >  PARAMETER TARGET_DIR = ./linux
> > END
> >
> > BEGIN OS
> >  PARAMETER OS_NAME = uclinux
> >  PARAMETER OS_VER = 1.00.d
> >  PARAMETER PROC_INSTANCE = microblaze_1
> >  PARAMETER lmb_memory = dlmb_cntlr_1
> >  PARAMETER main_memory_bank = 0
> >  PARAMETER main_memory = sdram_1
>
> but for sdram_1 (opb_sdram) there should be no bank number.
>
> >  PARAMETER stdin = RS232_1
> >  PARAMETER stdout = RS232_1
> >  PARAMETER TARGET_DIR = ./linux
> > END
>
> Also, it's unlikely that you want to use the same TARGET_DIR directive 
> for both CPUs.  This will cause a clash in the output of the 
> auto-config.in files (ie the 2nd one will overwrite the first one).
>
> Regards,
>
> John
> ___________________________
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> http://www.itee.uq.edu.au/~listarch/microblaze-uclinux/

--
Ryan Marotz <rmarotz@xxxxxxxxxx>
Architecture Technology Corp
952.829.5864 x160
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