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Commit | Line | Data |
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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, |
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); |
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 |