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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 | ||
7cbd2d2e SG |
8 | #define LOG_CATEGORY LOGC_ALLOC |
9 | ||
c9356be3 | 10 | #include <common.h> |
f7ae49fc | 11 | #include <log.h> |
c9356be3 | 12 | #include <malloc.h> |
0eb25b61 | 13 | #include <mapmem.h> |
401d1c4f | 14 | #include <asm/global_data.h> |
c9356be3 | 15 | #include <asm/io.h> |
bdaeea1b | 16 | #include <valgrind/valgrind.h> |
c9356be3 SG |
17 | |
18 | DECLARE_GLOBAL_DATA_PTR; | |
19 | ||
7cbd2d2e | 20 | static void *alloc_simple(size_t bytes, int align) |
c9356be3 | 21 | { |
7cbd2d2e | 22 | ulong addr, new_ptr; |
c9356be3 SG |
23 | void *ptr; |
24 | ||
7cbd2d2e SG |
25 | addr = ALIGN(gd->malloc_base + gd->malloc_ptr, align); |
26 | new_ptr = addr + bytes - gd->malloc_base; | |
eebcdb34 | 27 | log_debug("size=%lx, ptr=%lx, limit=%lx: ", (ulong)bytes, new_ptr, |
7cbd2d2e | 28 | gd->malloc_limit); |
9a01cca7 | 29 | if (new_ptr > gd->malloc_limit) { |
7cbd2d2e | 30 | log_err("alloc space exhausted\n"); |
2c857170 | 31 | return NULL; |
9a01cca7 | 32 | } |
7cbd2d2e SG |
33 | |
34 | ptr = map_sysmem(addr, bytes); | |
c9356be3 | 35 | gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr)); |
836ac74c | 36 | |
c9356be3 SG |
37 | return ptr; |
38 | } | |
39 | ||
7cbd2d2e | 40 | void *malloc_simple(size_t bytes) |
b6bfb6ff | 41 | { |
b6bfb6ff SG |
42 | void *ptr; |
43 | ||
7cbd2d2e SG |
44 | ptr = alloc_simple(bytes, 1); |
45 | if (!ptr) | |
46 | return ptr; | |
1923d54b | 47 | |
7cbd2d2e | 48 | log_debug("%lx\n", (ulong)ptr); |
bdaeea1b | 49 | VALGRIND_MALLOCLIKE_BLOCK(ptr, bytes, 0, false); |
7cbd2d2e SG |
50 | |
51 | return ptr; | |
52 | } | |
53 | ||
54 | void *memalign_simple(size_t align, size_t bytes) | |
55 | { | |
56 | void *ptr; | |
57 | ||
58 | ptr = alloc_simple(bytes, align); | |
59 | if (!ptr) | |
60 | return ptr; | |
61 | log_debug("aligned to %lx\n", (ulong)ptr); | |
bdaeea1b | 62 | VALGRIND_MALLOCLIKE_BLOCK(ptr, bytes, 0, false); |
836ac74c | 63 | |
b6bfb6ff SG |
64 | return ptr; |
65 | } | |
66 | ||
1eb0c03c | 67 | #if CONFIG_IS_ENABLED(SYS_MALLOC_SIMPLE) |
c9356be3 SG |
68 | void *calloc(size_t nmemb, size_t elem_size) |
69 | { | |
70 | size_t size = nmemb * elem_size; | |
71 | void *ptr; | |
72 | ||
73 | ptr = malloc(size); | |
7cbd2d2e SG |
74 | if (!ptr) |
75 | return ptr; | |
76 | memset(ptr, '\0', size); | |
c9356be3 SG |
77 | |
78 | return ptr; | |
79 | } | |
bdaeea1b SA |
80 | |
81 | #if IS_ENABLED(CONFIG_VALGRIND) | |
82 | void free_simple(void *ptr) | |
83 | { | |
84 | VALGRIND_FREELIKE_BLOCK(ptr, 0); | |
85 | } | |
86 | #endif | |
c9356be3 | 87 | #endif |
7cbd2d2e SG |
88 | |
89 | void malloc_simple_info(void) | |
90 | { | |
91 | log_info("malloc_simple: %lx bytes used, %lx remain\n", gd->malloc_ptr, | |
92 | CONFIG_VAL(SYS_MALLOC_F_LEN) - gd->malloc_ptr); | |
93 | } |