Hi Dirk

I think we should try to make this work.

On Sat, Mar 14, 2009 at 8:01 AM, Dirk Behme <[email protected]> wrote:
>
> With recent SVN at OMAP3 based Beagle we get:
>
> -- cut --
>
>  > scan_chain
>      TapName            | Enabled |   IdCode      Expected    IrLen
> IrCap  IrMask Instr
> ---|--------------------|---------|------------|------------|------|------|------|---------
>  0 | omap3.cpu          |    n    | 0x00000000 | 0x0b6d602f | 0x04 |
> 0x01 | 0x00 | 0x0f
>  1 | omap3.jrc          |    Y    | 0x0b7ae02f | 0x0b7ae02f | 0x06 |
> 0x01 | 0x0f | 0x3f
>
>  > jtag tapenable omap3.cpu
> Enabling Cortex-A8 @ OMAP3
> Cortex-A8 @ OMAP3 enabled
> 1
>  > scan_chain
>      TapName            | Enabled |   IdCode      Expected    IrLen
> IrCap  IrMask Instr
> ---|--------------------|---------|------------|------------|------|------|------|---------
>  0 | omap3.cpu          |    Y    | 0x00000000 | 0x0b6d602f | 0x04 |
> 0x01 | 0x00 | 0x0f
>  1 | omap3.jrc          |    Y    | 0x0b7ae02f | 0x0b7ae02f | 0x06 |
> 0x01 | 0x0f | 0x3f
>
> -- cut --
>
> Looking at this, I wonder
>
> a) if we should add "jtag tapenable omap3.cpu" command to
> configuration script omap3530.cfg? I think our goal is to access/debug
> the ARM, so we should enable access to it by default not needing to do
> any manual steps?
>
> b) why after tapenable command IDCode of omap3.cpu isn't updated and
> still reported as 0x00000000? Most probably this is only a cosmetic
> issue, but updating this would automatically show that configuration
> was successful. And it would avoid a manual check with
>
> -- cut --
>  > irscan omap3.cpu 0xE
>  > drscan omap3.cpu 32 0x0
> 0B6D602F
> -- cut --
>
> What do you think?
>
> Best regards
>
> Dirk
>
>
>
>
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