| // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause |
| /* |
| * Copyright (C) 2018, STMicroelectronics - All Rights Reserved |
| */ |
| |
| #include <common.h> |
| #include <dm.h> |
| #include <lmb.h> |
| #include <ram.h> |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| int dram_init(void) |
| { |
| struct ram_info ram; |
| struct udevice *dev; |
| int ret; |
| |
| ret = uclass_get_device(UCLASS_RAM, 0, &dev); |
| if (ret) { |
| debug("RAM init failed: %d\n", ret); |
| return ret; |
| } |
| ret = ram_get_info(dev, &ram); |
| if (ret) { |
| debug("Cannot get RAM size: %d\n", ret); |
| return ret; |
| } |
| debug("RAM init base=%lx, size=%x\n", ram.base, ram.size); |
| |
| gd->ram_size = ram.size; |
| |
| return 0; |
| } |
| |
| ulong board_get_usable_ram_top(ulong total_size) |
| { |
| phys_addr_t reg; |
| struct lmb lmb; |
| |
| /* found enough not-reserved memory to relocated U-Boot */ |
| lmb_init(&lmb); |
| lmb_add(&lmb, gd->ram_base, gd->ram_size); |
| boot_fdt_add_mem_rsv_regions(&lmb, (void *)gd->fdt_blob); |
| reg = lmb_alloc(&lmb, CONFIG_SYS_MALLOC_LEN + total_size, SZ_4K); |
| |
| if (reg) |
| return ALIGN(reg + CONFIG_SYS_MALLOC_LEN + total_size, SZ_4K); |
| |
| return gd->ram_top; |
| } |