From: Wolfgang Denk <wd@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] [PATCH] PPC40x: Rework CFG_INIT_DCACHE_CS Block to Avoid Machine Checks
Date: Sun, 18 May 2008 22:38:02 +0200 [thread overview]
Message-ID: <20080518203802.8A8642476E@gemini.denx.de> (raw)
In-Reply-To: Your message of "Fri, 16 May 2008 14:35:11 PDT." <1210973711-1855-1-git-send-email-gerickson@nuovations.com>
In message <1210973711-1855-1-git-send-email-gerickson@nuovations.com> you wrote:
>
...
> cpu/ppc4xx/start.S:
> Reworked code to handle the primordial stack and data area initialization when CFG_INIT_DCACHE_CS is asserted.
...
> - * Boards like the Kilauea (405EX) don't have OCM and can't use
> - * DCache for init-ram. So setup stack here directly after the
> - * SDRAM is initialized.
> + * For boards that don't have OCM and can't use the data cache
> + * for their primordial stack, setup stack here directly after the
> + * SDRAM is initialized in ext_bus_cntlr_init.
Was there ever a useful explanation given why these boards should not
be able to use DC as initial RAM?
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
[Braddock:] Mr. Churchill, you are drunk.
[Churchill:] And you madam, are ugly. But I shall be sober tomorrow.
next prev parent reply other threads:[~2008-05-18 20:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-16 21:35 [U-Boot-Users] [PATCH] PPC40x: Rework CFG_INIT_DCACHE_CS Block to Avoid Machine Checks Grant Erickson
2008-05-18 20:38 ` Wolfgang Denk [this message]
2008-05-18 20:56 ` Grant Erickson
2008-05-18 21:23 ` Wolfgang Denk
2008-05-18 21:35 ` Grant Erickson
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