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83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
c9356be3 SG |
2 | /* |
3 | * Simple malloc implementation | |
4 | * | |
5 | * Copyright (c) 2014 Google, Inc | |
c9356be3 SG |
6 | */ |
7 | ||
8 | #include <common.h> | |
9 | #include <malloc.h> | |
0eb25b61 | 10 | #include <mapmem.h> |
c9356be3 SG |
11 | #include <asm/io.h> |
12 | ||
13 | DECLARE_GLOBAL_DATA_PTR; | |
14 | ||
15 | void *malloc_simple(size_t bytes) | |
16 | { | |
17 | ulong new_ptr; | |
18 | void *ptr; | |
19 | ||
20 | new_ptr = gd->malloc_ptr + bytes; | |
9a01cca7 | 21 | debug("%s: size=%zx, ptr=%lx, limit=%lx: ", __func__, bytes, new_ptr, |
836ac74c | 22 | gd->malloc_limit); |
9a01cca7 SG |
23 | if (new_ptr > gd->malloc_limit) { |
24 | debug("space exhausted\n"); | |
2c857170 | 25 | return NULL; |
9a01cca7 | 26 | } |
c9356be3 SG |
27 | ptr = map_sysmem(gd->malloc_base + gd->malloc_ptr, bytes); |
28 | gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr)); | |
9a01cca7 | 29 | debug("%lx\n", (ulong)ptr); |
836ac74c | 30 | |
c9356be3 SG |
31 | return ptr; |
32 | } | |
33 | ||
b6bfb6ff SG |
34 | void *memalign_simple(size_t align, size_t bytes) |
35 | { | |
36 | ulong addr, new_ptr; | |
37 | void *ptr; | |
38 | ||
972ea533 | 39 | addr = ALIGN(gd->malloc_base + gd->malloc_ptr, align); |
596380db | 40 | new_ptr = addr + bytes - gd->malloc_base; |
1923d54b AD |
41 | if (new_ptr > gd->malloc_limit) { |
42 | debug("space exhausted\n"); | |
b6bfb6ff | 43 | return NULL; |
1923d54b AD |
44 | } |
45 | ||
b6bfb6ff SG |
46 | ptr = map_sysmem(addr, bytes); |
47 | gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr)); | |
1923d54b | 48 | debug("%lx\n", (ulong)ptr); |
836ac74c | 49 | |
b6bfb6ff SG |
50 | return ptr; |
51 | } | |
52 | ||
1eb0c03c | 53 | #if CONFIG_IS_ENABLED(SYS_MALLOC_SIMPLE) |
c9356be3 SG |
54 | void *calloc(size_t nmemb, size_t elem_size) |
55 | { | |
56 | size_t size = nmemb * elem_size; | |
57 | void *ptr; | |
58 | ||
59 | ptr = malloc(size); | |
f3da76ea SG |
60 | if (ptr) |
61 | memset(ptr, '\0', size); | |
c9356be3 SG |
62 | |
63 | return ptr; | |
64 | } | |
65 | #endif |