[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;
	debug("%s: size=%zx, ptr=%lx, limit=%lx\n", __func__, bytes, new_ptr,
	      gd->malloc_limit);
	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;
}

void *memalign_simple(size_t align, size_t bytes)
{
	ulong addr, new_ptr;
	void *ptr;

	addr = ALIGN(gd->malloc_base + gd->malloc_ptr, align);
	new_ptr = addr + bytes - gd->malloc_base;
	if (new_ptr > gd->malloc_limit)
		return NULL;
	ptr = map_sysmem(addr, bytes);
	gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr));

	return ptr;
}

#if CONFIG_IS_ENABLED(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;
836ac74c SG	22	debug("%s: size=%zx, ptr=%lx, limit=%lx\n", __func__, bytes, new_ptr,
836ac74c SG	23	gd->malloc_limit);
c9356be3	24	if (new_ptr > gd->malloc_limit)
2c857170	25	return NULL;
c9356be3 SG	26	ptr = map_sysmem(gd->malloc_base + gd->malloc_ptr, bytes);
c9356be3 SG	27	gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr));
836ac74c	28
c9356be3 SG	29	return ptr;
	30	}
	31
b6bfb6ff SG	32	void *memalign_simple(size_t align, size_t bytes)
	33	{
	34	ulong addr, new_ptr;
	35	void *ptr;
	36
972ea533	37	addr = ALIGN(gd->malloc_base + gd->malloc_ptr, align);
596380db	38	new_ptr = addr + bytes - gd->malloc_base;
b6bfb6ff SG	39	if (new_ptr > gd->malloc_limit)
	40	return NULL;
	41	ptr = map_sysmem(addr, bytes);
	42	gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr));
836ac74c	43
b6bfb6ff SG	44	return ptr;
	45	}
	46
1eb0c03c	47	#if CONFIG_IS_ENABLED(SYS_MALLOC_SIMPLE)
c9356be3 SG	48	void *calloc(size_t nmemb, size_t elem_size)
	49	{
	50	size_t size = nmemb * elem_size;
	51	void *ptr;
	52
	53	ptr = malloc(size);
	54	memset(ptr, '\0', size);
	55
	56	return ptr;
	57	}
	58	#endif