1 // SPDX-License-Identifier: GPL-2.0+
3 * Simple malloc implementation
5 * Copyright (c) 2014 Google, Inc
8 #define LOG_CATEGORY LOGC_ALLOC
14 #include <asm/global_data.h>
16 #include <valgrind/valgrind.h>
18 DECLARE_GLOBAL_DATA_PTR;
20 static void *alloc_simple(size_t bytes, int align)
25 addr = ALIGN(gd->malloc_base + gd->malloc_ptr, align);
26 new_ptr = addr + bytes - gd->malloc_base;
27 log_debug("size=%lx, ptr=%lx, limit=%lx: ", (ulong)bytes, new_ptr,
29 if (new_ptr > gd->malloc_limit) {
30 log_err("alloc space exhausted\n");
34 ptr = map_sysmem(addr, bytes);
35 gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr));
40 void *malloc_simple(size_t bytes)
44 ptr = alloc_simple(bytes, 1);
48 log_debug("%lx\n", (ulong)ptr);
49 VALGRIND_MALLOCLIKE_BLOCK(ptr, bytes, 0, false);
54 void *memalign_simple(size_t align, size_t bytes)
58 ptr = alloc_simple(bytes, align);
61 log_debug("aligned to %lx\n", (ulong)ptr);
62 VALGRIND_MALLOCLIKE_BLOCK(ptr, bytes, 0, false);
67 #if CONFIG_IS_ENABLED(SYS_MALLOC_SIMPLE)
68 void *calloc(size_t nmemb, size_t elem_size)
70 size_t size = nmemb * elem_size;
76 memset(ptr, '\0', size);
81 #if IS_ENABLED(CONFIG_VALGRIND)
82 void free_simple(void *ptr)
84 VALGRIND_FREELIKE_BLOCK(ptr, 0);
89 void malloc_simple_info(void)
91 log_info("malloc_simple: %lx bytes used, %lx remain\n", gd->malloc_ptr,
92 CONFIG_VAL(SYS_MALLOC_F_LEN) - gd->malloc_ptr);