1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * Simple malloc implementation 4 * 5 * Copyright (c) 2014 Google, Inc 6 */ 7 8#define LOG_CATEGORY LOGC_ALLOC 9 10#include <common.h> 11#include <log.h> 12#include <malloc.h> 13#include <mapmem.h> 14#include <asm/global_data.h> 15#include <asm/io.h> 16#include <valgrind/valgrind.h> 17 18DECLARE_GLOBAL_DATA_PTR; 19 20static void *alloc_simple(size_t bytes, int align) 21{ 22 ulong addr, new_ptr; 23 void *ptr; 24 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, 28 gd->malloc_limit); 29 if (new_ptr > gd->malloc_limit) { 30 log_err("alloc space exhausted\n"); 31 return NULL; 32 } 33 34 ptr = map_sysmem(addr, bytes); 35 gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr)); 36 37 return ptr; 38} 39 40void *malloc_simple(size_t bytes) 41{ 42 void *ptr; 43 44 ptr = alloc_simple(bytes, 1); 45 if (!ptr) 46 return ptr; 47 48 log_debug("%lx\n", (ulong)ptr); 49 VALGRIND_MALLOCLIKE_BLOCK(ptr, bytes, 0, false); 50 51 return ptr; 52} 53 54void *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); 62 VALGRIND_MALLOCLIKE_BLOCK(ptr, bytes, 0, false); 63 64 return ptr; 65} 66 67#if CONFIG_IS_ENABLED(SYS_MALLOC_SIMPLE) 68void *calloc(size_t nmemb, size_t elem_size) 69{ 70 size_t size = nmemb * elem_size; 71 void *ptr; 72 73 ptr = malloc(size); 74 if (!ptr) 75 return ptr; 76 memset(ptr, '\0', size); 77 78 return ptr; 79} 80 81#if IS_ENABLED(CONFIG_VALGRIND) 82void free_simple(void *ptr) 83{ 84 VALGRIND_FREELIKE_BLOCK(ptr, 0); 85} 86#endif 87#endif 88 89void 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} 94