[U-Boot] [PATCH v3 2/3] u-boot.elf: fix entry symbol not found warning

Tom Rini
2017-04-19T17:29:53Z

On Tue, Apr 18, 2017 at 10:35:32PM +0200, Álvaro Fernández Rojas wrote:

> LD gives the following warning when trying to process u-boot-elf.o
> warning: cannot find entry symbol __start; defaulting to 0000000080010000
> Fix this by renaming _start to __start
>
> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
> ---
> v3: Introduce changes suggested by Daniel Schwierzeck:
> - Split patches.
> v2: Introduce changes suggested by Daniel Schwierzeck:
> - Fix _start vs __start symbol.
>
> Makefile | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/Makefile b/Makefile
> index 8730550..66c9be2 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1187,7 +1187,7 @@ u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
> u-boot.elf: u-boot.bin
> @$(OBJCOPY) -I binary $(PLATFORM_ELFFLAGS) $< u-boot-elf.o
> @$(LD) u-boot-elf.o -o $@ \
> - --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
> + --defsym=__start=$(CONFIG_SYS_TEXT_BASE) \
> -Ttext=$(CONFIG_SYS_TEXT_BASE)
>
> # Rule to link u-boot

I don't know what's going on here, but I don't think this is right. We
don't see this warning on aarch64 today. I would think that since we're
talking about ELF _start vs __start would be part of the standard.

--
Tom
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