1 // SPDX-License-Identifier: GPL-2.0+
3 * Simple malloc implementation
5 * Copyright (c) 2014 Google, Inc
8 #define LOG_CATEGORY LOGC_ALLOC
13 #include <asm/global_data.h>
15 #include <valgrind/valgrind.h>
17 DECLARE_GLOBAL_DATA_PTR;
19 static void *alloc_simple(size_t bytes, int align)
24 addr = ALIGN(gd->malloc_base + gd->malloc_ptr, align);
25 new_ptr = addr + bytes - gd->malloc_base;
26 log_debug("size=%lx, ptr=%lx, limit=%x: ", (ulong)bytes, new_ptr,
28 if (new_ptr > gd->malloc_limit) {
29 log_err("alloc space exhausted\n");
33 ptr = map_sysmem(addr, bytes);
34 gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr));
39 void *malloc_simple(size_t bytes)
43 ptr = alloc_simple(bytes, 1);
47 log_debug("%lx\n", (ulong)ptr);
48 VALGRIND_MALLOCLIKE_BLOCK(ptr, bytes, 0, false);
53 void *memalign_simple(size_t align, size_t bytes)
57 ptr = alloc_simple(bytes, align);
60 log_debug("aligned to %lx\n", (ulong)ptr);
61 VALGRIND_MALLOCLIKE_BLOCK(ptr, bytes, 0, false);
66 #if CONFIG_IS_ENABLED(SYS_MALLOC_SIMPLE)
67 void *calloc(size_t nmemb, size_t elem_size)
69 size_t size = nmemb * elem_size;
75 memset(ptr, '\0', size);
80 #if IS_ENABLED(CONFIG_VALGRIND)
81 void free_simple(void *ptr)
83 VALGRIND_FREELIKE_BLOCK(ptr, 0);
88 void malloc_simple_info(void)
90 log_info("malloc_simple: %x bytes used, %x remain\n", gd->malloc_ptr,
91 CONFIG_VAL(SYS_MALLOC_F_LEN) - gd->malloc_ptr);