[PATCH] Load PBL into SRAM

Sascha Hauer s.hauer at pengutronix.de
Tue Feb 4 01:57:46 EST 2014


On Tue, Feb 04, 2014 at 04:56:25AM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 10:06 Fri 31 Jan     , David Vincent wrote:
> > This allows to load all the lowlevel init code, including the
> > uncompressor, inside SRAM and not just the bare init part. This is
> > useful when pbl is used as a first-stage bootloader but is loaded by an
> > external firmware.
> > 
> > Signed-off-by: David Vincent <freesilicon at gmail.com>
> > ---
> >  arch/arm/lib/pbl.lds.S            |    4 ++--
> >  common/Kconfig                    |   16 ++++++++++++++--
> >  include/asm-generic/barebox.lds.h |   14 +++++++++++++-
> >  pbl/Kconfig                       |    7 +++++++
> >  4 files changed, 36 insertions(+), 5 deletions(-)
> > 
> > diff --git a/arch/arm/lib/pbl.lds.S b/arch/arm/lib/pbl.lds.S
> > index 0954c89..34c0cb3 100644
> > --- a/arch/arm/lib/pbl.lds.S
> > +++ b/arch/arm/lib/pbl.lds.S
> > @@ -50,11 +50,11 @@ SECTIONS
> >  		*(.text*)
> >  	}
> >  
> > +	BAREBOX_PBL_SIZE
> > +
> >  	/* Discard unwind if enable in barebox */
> >  	/DISCARD/ : { *(.ARM.ex*) }
> >  
> > -	BAREBOX_BARE_INIT_SIZE
> > -
> 
> nack you change the binary format you can add an information but can not
> change the format

I don't think the format is changed here. It shouldn't matter where the
/DISCARD/ is, right? Nevertheless the patch looks more obvious if just
the line is changed, not its position.

> >  #include <linux/stringify.h>
> >  /* use 2 ASSERT because ld can not accept '"size" "10"' format */
> >  #define BAREBOX_BARE_INIT_SIZE					\
> >  	_barebox_bare_init_size = __bare_init_end - _text;	\
> >  	ASSERT(_barebox_bare_init_size < MAX_BARE_INIT_SIZE, "Barebox bare_init size > ") \
> > -	ASSERT(_barebox_bare_init_size < MAX_BARE_INIT_SIZE, __stringify(MAX_BARE_INIT_SIZE)) \
> > +	ASSERT(_barebox_bare_init_size < MAX_BARE_INIT_SIZE, __stringify(MAX_BARE_INIT_SIZE))
> different patch

This just removes the trailing '\' which is necessary here.

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