[people/ms/u-boot.git] / common / malloc_simple.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
Commit	Line	Data
c9356be3 SG	1	/*
	2	* Simple malloc implementation
	3	*
	4	* Copyright (c) 2014 Google, Inc
	5	*
	6	* SPDX-License-Identifier: GPL-2.0+
	7	*/
	8
	9	#include <common.h>
	10	#include <malloc.h>
0eb25b61	11	#include <mapmem.h>
c9356be3 SG	12	#include <asm/io.h>
	13
	14	DECLARE_GLOBAL_DATA_PTR;
	15
	16	void *malloc_simple(size_t bytes)
	17	{
	18	ulong new_ptr;
	19	void *ptr;
	20
	21	new_ptr = gd->malloc_ptr + bytes;
	22	if (new_ptr > gd->malloc_limit)
2c857170	23	return NULL;
c9356be3 SG	24	ptr = map_sysmem(gd->malloc_base + gd->malloc_ptr, bytes);
	25	gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr));
	26	return ptr;
	27	}
	28
	29	#ifdef CONFIG_SYS_MALLOC_SIMPLE
	30	void *calloc(size_t nmemb, size_t elem_size)
	31	{
	32	size_t size = nmemb * elem_size;
	33	void *ptr;
	34
	35	ptr = malloc(size);
	36	memset(ptr, '\0', size);
	37
	38	return ptr;
	39	}
	40	#endif