linux-kernel - Re: [patch v1 0/2] JTAG driver introduction

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Message-ID: <20170802141209.GB25781@lunn.ch>
Date:   Wed, 2 Aug 2017 16:12:09 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Oleksandr Shamray <oleksandrs@...lanox.com>
Cc:     gregkh@...uxfoundation.org, arnd@...db.de,
        devicetree@...r.kernel.org, jiri@...nulli.us,
        system-sw-low-level@...lanox.com, openbmc@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, mec@...ut.net, joel@....id.au,
        linux-serial@...r.kernel.org, vadimp@...llanox.com,
        tklauser@...tanz.ch, linux-arm-kernel@...ts.infradead.org
Subject: Re: [patch v1 0/2] JTAG driver introduction

On Wed, Aug 02, 2017 at 04:18:36PM +0300, Oleksandr Shamray wrote:
> When a need raise up to use JTAG interface for system's devices
> programming or CPU debugging, it could be done from the external
> JTAG master controller.
>  
> For such purpose, usually the user layer
> application implements jtag protocol or using a proprietary
> connection to vendor hardware.
> This method is slow and not generic.
>  
> We propose to implement general JTAG interface and infrastructure
> to communicate with user layer application. In such way, we can
> have the standard JTAG interface core part and separation from
> specific HW implementation.
> This allow new capability to debug the CPU or program system's 
> device via BMC without additional devices nor cost. 

Hi Oleksandr

Do you have patches for OpenOCD? Or maybe i should ask it another way,
what user space tools are you using?

Thanks
	Andrew