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

[John Williams <jwilliams@xxxxxxxxxxxxxx>]

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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