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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Simple malloc implementation
- *
- * Copyright (c) 2014 Google, Inc
- */
- #define LOG_CATEGORY LOGC_ALLOC
- #include <common.h>
- #include <malloc.h>
- #include <mapmem.h>
- #include <asm/io.h>
- DECLARE_GLOBAL_DATA_PTR;
- static void *alloc_simple(size_t bytes, int align)
- {
- ulong addr, new_ptr;
- void *ptr;
- addr = ALIGN(gd->malloc_base + gd->malloc_ptr, align);
- new_ptr = addr + bytes - gd->malloc_base;
- log_debug("size=%zx, ptr=%lx, limit=%lx: ", bytes, new_ptr,
- gd->malloc_limit);
- if (new_ptr > gd->malloc_limit) {
- log_err("alloc space exhausted\n");
- return NULL;
- }
- ptr = map_sysmem(addr, bytes);
- gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr));
- return ptr;
- }
- void *malloc_simple(size_t bytes)
- {
- void *ptr;
- ptr = alloc_simple(bytes, 1);
- if (!ptr)
- return ptr;
- log_debug("%lx\n", (ulong)ptr);
- return ptr;
- }
- void *memalign_simple(size_t align, size_t bytes)
- {
- void *ptr;
- ptr = alloc_simple(bytes, align);
- if (!ptr)
- return ptr;
- log_debug("aligned to %lx\n", (ulong)ptr);
- return ptr;
- }
- #if CONFIG_IS_ENABLED(SYS_MALLOC_SIMPLE)
- void *calloc(size_t nmemb, size_t elem_size)
- {
- size_t size = nmemb * elem_size;
- void *ptr;
- ptr = malloc(size);
- if (!ptr)
- return ptr;
- memset(ptr, '\0', size);
- return ptr;
- }
- #endif
- void malloc_simple_info(void)
- {
- log_info("malloc_simple: %lx bytes used, %lx remain\n", gd->malloc_ptr,
- CONFIG_VAL(SYS_MALLOC_F_LEN) - gd->malloc_ptr);
- }
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