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x86: Tidy up availability of string functions

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For now, just enable the fast-but-large string functions in 32-boot
U-Boot proper only. Avoid using them in SPL. We cannot use then in 64-bit
builds since we only have 32-bit assembly.

Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2023-05-04 16:50:52 -06:00 committed by Bin Meng
parent afa3d90c08
commit b194e432c3
2 changed files with 8 additions and 2 deletions
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6
arch/x86/include/asm/string.h
View File

@ -14,7 +14,11 @@ extern char *strrchr(const char *s, int c);
#undef __HAVE_ARCH_STRCHR
extern char *strchr(const char *s, int c);
#ifdef CONFIG_X86_64
/*
* Our assembly routines do not work on in 64-bit mode and we don't do a lot of
* copying in SPL, so code size is more important there.
*/
#if defined(CONFIG_SPL_BUILD) || !IS_ENABLED(CONFIG_X86_32BIT_INIT)
#undef __HAVE_ARCH_MEMCPY
extern void *memcpy(void *, const void *, __kernel_size_t);

4
arch/x86/lib/Makefile
View File

@ -10,7 +10,9 @@ obj-y += bios.o
obj-y += bios_asm.o
obj-y += bios_interrupts.o
endif
obj-y += string.o
endif
ifndef CONFIG_SPL_BUILD
obj-$(CONFIG_X86_32BIT_INIT) += string.o
endif
ifndef CONFIG_SPL_BUILD
obj-$(CONFIG_CMD_BOOTM) += bootm.o