1 /* 2 * Simple malloc implementation 3 * 4 * Copyright (c) 2014 Google, Inc 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9 #include <common.h> 10 #include <malloc.h> 11 #include <mapmem.h> 12 #include <asm/io.h> 13 14 DECLARE_GLOBAL_DATA_PTR; 15 16 void *malloc_simple(size_t bytes) 17 { 18 ulong new_ptr; 19 void *ptr; 20 21 new_ptr = gd->malloc_ptr + bytes; 22 if (new_ptr > gd->malloc_limit) 23 return NULL; 24 ptr = map_sysmem(gd->malloc_base + gd->malloc_ptr, bytes); 25 gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr)); 26 return ptr; 27 } 28 29 void *memalign_simple(size_t align, size_t bytes) 30 { 31 ulong addr, new_ptr; 32 void *ptr; 33 34 addr = ALIGN(gd->malloc_base + gd->malloc_ptr, align); 35 new_ptr = addr + bytes; 36 if (new_ptr > gd->malloc_limit) 37 return NULL; 38 ptr = map_sysmem(addr, bytes); 39 gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr)); 40 return ptr; 41 } 42 43 #ifdef CONFIG_SYS_MALLOC_SIMPLE 44 void *calloc(size_t nmemb, size_t elem_size) 45 { 46 size_t size = nmemb * elem_size; 47 void *ptr; 48 49 ptr = malloc(size); 50 memset(ptr, '\0', size); 51 52 return ptr; 53 } 54 #endif 55