From: Jean-Christophe PLAGNIOL-VILLARD Date: Fri, 14 Aug 2009 22:13:57 +0200 Subject: [U-Boot] [PATCH] Add ability for arch code to make changes before we boot In-Reply-To: <1250276442-28463-1-git-send-email-galak@kernel.crashing.org> References: <1250276442-28463-1-git-send-email-galak@kernel.crashing.org> Message-ID: <20090814201357.GA27137@game.jcrosoft.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 14:00 Fri 14 Aug , Kumar Gala wrote: > Added a arch_preboot() function that cpu specific code can implement to > allow for various modifications to the state of the machine right before > we boot. This can be useful to setup register state to a specific > configuration. > > Signed-off-by: Kumar Gala > --- > common/cmd_bootm.c | 10 ++++++++++ > 1 files changed, 10 insertions(+), 0 deletions(-) > > diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c > index 86c8122..766889a 100644 > --- a/common/cmd_bootm.c > +++ b/common/cmd_bootm.c > @@ -166,6 +166,13 @@ void __arch_lmb_reserve(struct lmb *lmb) > } > void arch_lmb_reserve(struct lmb *lmb) __attribute__((weak, alias("__arch_lmb_reserve"))); > > +/* Allow for arch specific config before we boot */ > +void __arch_preboot(void) > +{ > + /* please define platform specific arch_preboot() */ > +} > +void arch_preboot(void) __attribute__((weak, alias("__arch_preboot"))); > + why not a section so you will be able to have multiple callback so it can be arch or soc or board too in any combination Best Regards, J.