Re: [microblaze-uclinux] Soft reset?

[John Williams <jwilliams@xxxxxxxxxxxxxx>]

Hi Phillip,

Philipp Hachtmann wrote:

> BUT... since a few days (don't know what i changed...) I cannot reboot 
> the machine from Linux. My Gpio reset works (tested with a little 
> program) fine.

Lesson #1 - use a revision control system, commit early and commit 
often!  :)

> Now I have come to /arch/microblaze/platform/microblaze-auto/machine.c 
> in my kernel sources. There they ask for a 
> "CONFIG_XILINX_SOFT_RESET_0_INSTANCE" - but I don't have that.
>
> The following is from a autoconfig.h found somewhere by using google. I 
> think it looks the way it has to look:
>
>  > CONFIG_XILINX_SOFT_RESET_0_INSTANCE="Reset_GPIO"
>  > CONFIG_XILINX_SOFT_RESET_0_BASEADDR=0x40030000
>  > CONFIG_XILINX_SOFT_RESET_0_HIGHADDR=0x4003FFFF
>  > ...

There should be a line like
PARAMETER periph_type_overrides = {Reset_GPIO soft_reset}

inside the OS section of the MSS file.  This tells the BSP tools that 
the peripheral named "Reset_GPIO" should alias as a peripheral of type 
"soft_reset".  That, in turn, lets the kernel code know exactly which 
device it shold drive to generate reset.

Regards,

John
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