[U-Boot] [PATCH 06/48] Allow objcopy to work without filling gaps with 0xff

[Bin Meng]

On Wed, Jul 22, 2015 at 11:48 PM, Simon Glass <sjg at chromium.org> wrote:
> This is currently done for all targets, since 0xff is the default erased
> value for most flash devices. In some cases this is not what we want (e.g.
> for EFI images) so provide a command to do a vanilla objcopy.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>
>  Makefile  | 8 +++++++-
>  config.mk | 2 --
>  2 files changed, 7 insertions(+), 3 deletions(-)
>
> diff --git a/Makefile b/Makefile
> index b6f83a5..e0218b3 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -778,8 +778,14 @@ ifneq ($(CONFIG_SYS_TEXT_BASE),)
>  LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
>  endif
>
> +# Normally we fill empty space with 0xff
>  quiet_cmd_objcopy = OBJCOPY $@
> -cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
> +cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
> +       $(OBJCOPYFLAGS_$(@F)) $< $@
> +
> +# Provide a version which does not do this, for use by EFI
> +quiet_cmd_zobjcopy = OBJCOPY $@
> +cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
>
>  quiet_cmd_mkimage = MKIMAGE $@
>  cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
> diff --git a/config.mk b/config.mk
> index 6282919..b77d589 100644
> --- a/config.mk
> +++ b/config.mk
> @@ -73,8 +73,6 @@ endif
>
>  RELFLAGS := $(PLATFORM_RELFLAGS)
>
> -OBJCOPYFLAGS += --gap-fill=0xff
> -
>  PLATFORM_CPPFLAGS += $(RELFLAGS)
>  PLATFORM_CPPFLAGS += -pipe
>
> --

Reviewed-by: Bin Meng <bmeng.cn at gmail.com>