Re: [PATCH] MIPS: Calculate VMLINUZ_LOAD_ADDRESS based on the lengthof vmlinux.bin

From: wu zhangjin
Date: Tue Aug 31 2010 - 11:11:23 EST


Hi,

This is a very good fix:

$ ls -sh arch/mips/boot/compressed/vmlinux.bin vmlinux
5.4M arch/mips/boot/compressed/vmlinux.bin 6.9M vmlinux

Thanks very much.

Acked-by: Wu Zhangjin <wuzhangjin@xxxxxxxxx>

Regards,
Wu Zhangjin

On 8/31/10, Shmulik Ladkani <shmulik.ladkani@xxxxxxxxx> wrote:
> Fix VMLINUZ_LOAD_ADDRESS calculation to be based on the length of
> vmlinux.bin,
> the actual uncompressed kernel binary.
>
> Previously it was based on the length of KBUILD_IMAGE (the unstripped ELF
> vmlinux), which is bigger than vmlinux.bin.
> As a result, vmlinuz was loaded into a memory address higher then actually
> needed - a problem for small memory platforms.
>
> Signed-off-by: Shmulik Ladkani <shmulik.ladkani@xxxxxxxxx>
> ---
> diff --git a/arch/mips/boot/compressed/Makefile
> b/arch/mips/boot/compressed/Makefile
> index ed9bb70..5fd7f7a 100644
> --- a/arch/mips/boot/compressed/Makefile
> +++ b/arch/mips/boot/compressed/Makefile
> @@ -59,7 +59,7 @@ $(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE
> hostprogs-y := calc_vmlinuz_load_addr
>
> VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
> - $(objtree)/$(KBUILD_IMAGE) $(VMLINUX_LOAD_ADDRESS))
> + $(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS))
>
> vmlinuzobjs-y += $(obj)/piggy.o
>
> --
> Shmulik Ladkani
>
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