From mboxrd@z Thu Jan  1 00:00:00 1970
From: Timur Tabi <timur@freescale.com>
Date: Thu, 22 Mar 2012 14:56:04 -0500
Subject: [U-Boot] [PATCH 3/4][v2] powerpc/85xx:Make debug exception
 vector accessible
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Scott Wood wrote:
> Either it's needed, or we should get rid of CONFIG_ENABLE_36BIT_PHYS
> entirely.  Either way, we should test the results on e500v1 hardware.

That macro conditionally enables support for MAS7:

#if defined(CONFIG_ENABLE_36BIT_PHYS)
	ori	r0,r0,HID0_ENMAS7 at l	/* Enable MAS7 */
#endif

So I don't think we can get rid of it, otherwise I suspect an e500v1
operating system will not work on an e500v2 part.

-- 
Timur Tabi
Linux kernel developer at Freescale