RE: Crossgcc for PowerPC 85xx ( e500 ) ?

["Alan J. Luse" <alanl at timeamerica dot com>]

The MPC85xx is Motorola's newest and fastest PowerQUICC III communications processor family and it does use a e500 PowerPC core that is compliant with the Book E enhanced PowerPC spec running at up to 1850 MIPS! See http://e-www.motorola.com/webapp/sps/site/prod_summary.jsp?code=MPC8560&nodeId=03DnXMztdcv4N0DKCb for more information on the MPC8560.

I have successfully built the PowerPC crosstools for the much lower speed PowerQUICC I family to run under Cygwin on Windows.  I used Dan's crosstool scripts for the MPC860 with gcc-3.3.3 and glibc-2.3.2.  The PowerPC gcc build does presumably know about the e500 core and any variations it may have from other PowerPC variants.  I would start with Dan's MPC860 setup and adjust it from there to build for the MPC85xx.

Good luck.

Alan J. Luse

-----Original Message-----
From: crossgcc-owner@sources.redhat.com [mailto:crossgcc-owner@sources.redhat.com] On Behalf Of Thierry Moreau
Sent: Friday, March 26, 2004 9:17 AM
To: crossgcc@sources.redhat.com
Subject: Re: Crossgcc for PowerPC 85xx ( e500 ) ?


Sébastien Douheret wrote:

>Hi,
>
>Does anyone know where i can find a GNU cross-compiler hosted on 
>windows (with Cygwin) to target a Motorola PowerPC 85xx (core e500 or 
>BookE) ? I think that GCC 3.3 and binuitls 2.1.4 will be necessary ! 
>Which are the good options to generate cross-gcc for e500 core ?
>  
>
Perhaps the way you ask  your question is not easily understood by the 
crossgcc active participants.

Even myself (knowledgeable of a couple of the Motorola PowerPC families) 
I find sme ambiguities.

In the embedded area, the main Motorola PowerPC cores are
a) the one in the MPC8xx family (no HW floating point, a specific MMU 
design)
b) the one in the MPC82xx family (HW floating point, another specific 
MMU design)
c) the one in the MPC5200 (...)
plus there are high-performance oriented cores. So, is MPC85xx part of 
a) or b)? The reference to E500 appears ambiguous to me and the Book E 
is an architecture document covering many implementation variants.

With the never ending processor part numbers that Motorola come up with, 
the GCC and CrossGCC participants just can't follow.

The selection of version numbers for GCC, Binutils and a run-time 
library is an issue separate from the precise processor model that you 
whish to support.

The GCC support of a given PPC core is implemented by compiler command 
switches that you specify e.g. in the CFLAGS makefile variable. It is up 
to you to get them right (!).

If you whish to use the embedded-oriented run-time library called newlib 
for the PowerPC, there is a recurring issue about two-pass 
cross-compiler build procedure, for which I have a (rather specific) 
solution on my web site.

Good luck.

-- 

- Thierry Moreau

CONNOTECH Experts-conseils inc.
9130 Place de Montgolfier
Montreal, Qc
H2M 2A1

Tel.: (514)385-5691
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