leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

board_init_f_mem(): Don't require memset()

Browse Source 
Unfortunately memset() is not always available, so provide a substitute when
needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2015-10-19 06:49:57 -06:00 committed by Tom Rini
parent af6bbd4dae
commit 12360982fa
1 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
common/init/board_init.c
View File

@ -11,6 +11,16 @@
DECLARE_GLOBAL_DATA_PTR;
/*
* It isn't trivial to figure out whether memcpy() exists. The arch-specific
* memcpy() is not normally available in SPL due to code size.
*/
#if !defined(CONFIG_SPL_BUILD) || \
(defined(CONFIG_SPL_LIBGENERIC_SUPPORT) && \
!defined(CONFIG_USE_ARCH_MEMSET))
#define _USE_MEMCPY
#endif
/* Unfortunately x86 can't compile this code as gd cannot be assigned */
#ifndef CONFIG_X86
__weak void arch_setup_gd(struct global_data *gd_ptr)
@ -22,6 +32,9 @@ __weak void arch_setup_gd(struct global_data *gd_ptr)
ulong board_init_f_mem(ulong top)
{
struct global_data *gd_ptr;
#ifndef _USE_MEMCPY
int *ptr;
#endif
/* Leave space for the stack we are running with now */
top -= 0x40;
@ -29,7 +42,12 @@ ulong board_init_f_mem(ulong top)
top -= sizeof(struct global_data);
top = ALIGN(top, 16);
gd_ptr = (struct global_data *)top;
#ifdef _USE_MEMCPY
memset(gd_ptr, '\0', sizeof(*gd));
#else
for (ptr = (int *)gd_ptr; ptr < (int *)(gd_ptr + 1); )
*ptr++ = 0;
#endif
arch_setup_gd(gd_ptr);
#if defined(CONFIG_SYS_MALLOC_F)