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>
11 #include <mapmem.h>
12 #include <asm/io.h>
13
14 DECLARE_GLOBAL_DATA_PTR;
15
malloc_simple(size_t bytes)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)
23 return NULL;
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
memalign_simple(size_t align,size_t bytes)29 void *memalign_simple(size_t align, size_t bytes)
30 {
31 ulong addr, new_ptr;
32 void *ptr;
33
34 addr = ALIGN(gd->malloc_base + gd->malloc_ptr, bytes);
35 new_ptr = addr + bytes;
36 if (new_ptr > gd->malloc_limit)
37 return NULL;
38 ptr = map_sysmem(addr, bytes);
39 gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr));
40 return ptr;
41 }
42
43 #ifdef CONFIG_SYS_MALLOC_SIMPLE
calloc(size_t nmemb,size_t elem_size)44 void *calloc(size_t nmemb, size_t elem_size)
45 {
46 size_t size = nmemb * elem_size;
47 void *ptr;
48
49 ptr = malloc(size);
50 memset(ptr, '\0', size);
51
52 return ptr;
53 }
54 #endif
55