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Commit 7ae7ef3f authored by Wu Zhangjin's avatar Wu Zhangjin Committed by Ralf Baechle
Browse files

MIPS: Reduce kernel image size for !CONFIG_DEBUG_ZBOOT 



!CONFIG_DEBUG_ZBOOT doesn't need puts() and puthex(), remove them and
the corrospindig strings for !CONFIG_DEBUG_ZBOOT, as a result, it saves
about 1280 bytes.

[ralf@linux-mips.org: Resolved reject.]

Signed-off-by: default avatarWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/1898/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 160f1431

arch/mips/boot/compressed/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -32,9 +32,10 @@ KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \ 
targets := head.o decompress.o string.o dbg.o uart-16550.o uart-alchemy.o



# decompressor objects (linked with vmlinuz)

vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o $(obj)/dbg.o

vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o



ifdef CONFIG_DEBUG_ZBOOT

vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT)		   += $(obj)/dbg.o

vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o

vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY)		   += $(obj)/uart-alchemy.o

endif

arch/mips/boot/compressed/decompress.c

+5 −0
Original line number Diff line number Diff line
@@ -28,8 +28,13 @@ unsigned long free_mem_end_ptr; 
extern unsigned char __image_begin, __image_end;



/* debug interfaces  */

#ifdef CONFIG_DEBUG_ZBOOT

extern void puts(const char *s);

extern void puthex(unsigned long long val);

#else

#define puts(s) do {} while (0)

#define puthex(val) do {} while (0)

#endif



void error(char *x)

{