Subject: Re: [PATCH 5/6] PowerPC 440EPx: Sequoia board support

From: Stefan Roese <[email-masked]>
Date: Fri, 3 Aug 2007 08:44:13 +0200

On Thursday 02 August 2007, Josh Boyer wrote:
> On Mon, 30 Jul 2007 19:16:28 +0400
> > +0400 +++ linux/arch/powerpc/kernel/cputable.c	2007-07-27
> > 20:44:26.000000000 +0400 @@ -1132,6 +1132,42 @@
> >  		.dcache_bsize		= 32,
> >  		.platform		= "ppc440",
> >  	},
> > +	{ /* 440EPX  - with Security/Kasumi  */
> > +		.pvr_mask		= 0xf0000fff,
> > +		.pvr_value		= 0x200008D0,
> > +		.cpu_name		= "440EPX - with Security/Kasumi",
> > +		.cpu_features		= CPU_FTRS_44X,
> > +		.cpu_user_features	= COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU, /*
> > 440EPX has an FPU */ +		.icache_bsize		= 32,
> > +		.dcache_bsize		= 32,
> > +	},
> > +	{ /* 440EPX  - without Security/Kasumi  */
> > +		.pvr_mask		= 0xf0000fff,
> > +		.pvr_value		= 0x200008D4,
> > +		.cpu_name		= "440EPX - no Security/Kasumi",
> > +		.cpu_features		= CPU_FTRS_44X,
> > +		.cpu_user_features	= COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU, /*
> > 440EPX has an FPU */ +		.icache_bsize		= 32,
> > +		.dcache_bsize		= 32,
> > +	},
> > +	{ /* 440GRX  - with Security/Kasumi  */
> > +		.pvr_mask		= 0xf0000fff,
> > +		.pvr_value		= 0x200008D8,
> > +		.cpu_name		= "440GRX - with Security/Kasumi",
> > +		.cpu_features		= CPU_FTRS_44X,
> > +		.cpu_user_features	= COMMON_USER_BOOKE, /* 440GRX has no FPU */
> > +		.icache_bsize		= 32,
> > +		.dcache_bsize		= 32,
> > +	},
> > +	{ /* 440GRX  - without Security/Kasumi  */
> > +		.pvr_mask		= 0xf0000fff,
> > +		.pvr_value		= 0x200008DC,
> > +		.cpu_name		= "440GRX - no Security/Kasumi",
> > +		.cpu_features		= CPU_FTRS_44X,
> > +		.cpu_user_features	= COMMON_USER_BOOKE, /* 440GRX has no FPU */
> > +		.icache_bsize		= 32,
> > +		.dcache_bsize		= 32,
> > +	},
>
> Should the 440GRX PVR additions be done in a separate patch?  Or is the
> PVR and cpu features truly the only difference between 440EPx and
> 440GRx?

I think it makes sense to add the 440GRx with this patchset too. The 440GRx is 
a subset of the 440EPx, missing some stuff like USB, FPU. And the AMCC 
Rainier 440GRx eval board is a subset of the Sequoia eval board. So no new 
board specific sources should be necessary to support the Rainier, just a 
different defconfig file.

Best regards,
Stefan