u-boot/common/malloc_simple.c
Joe Hershberger 0eb25b6196 common: Make sure arch-specific map_sysmem() is defined
In the case where the arch defines a custom map_sysmem(), make sure that
including just mapmem.h is sufficient to have these functions as they
are when the arch does not override it.

Also split the non-arch specific functions out of common.h

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-04-18 11:11:09 -06:00

40 lines
695 B
C

/*
* Simple malloc implementation
*
* Copyright (c) 2014 Google, Inc
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <malloc.h>
#include <mapmem.h>
#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
void *malloc_simple(size_t bytes)
{
ulong new_ptr;
void *ptr;
new_ptr = gd->malloc_ptr + bytes;
if (new_ptr > gd->malloc_limit)
return NULL;
ptr = map_sysmem(gd->malloc_base + gd->malloc_ptr, bytes);
gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr));
return ptr;
}
#ifdef CONFIG_SYS_MALLOC_SIMPLE
void *calloc(size_t nmemb, size_t elem_size)
{
size_t size = nmemb * elem_size;
void *ptr;
ptr = malloc(size);
memset(ptr, '\0', size);
return ptr;
}
#endif