1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * Copyright (C) 2017 Beckhoff Automation GmbH & Co. KG 4 * Patrick Bruenn <p.bruenn@beckhoff.com> 5 */ 6 7#include <common.h> 8#include <init.h> 9#include <asm/global_data.h> 10 11DECLARE_GLOBAL_DATA_PTR; 12 13phys_size_t get_effective_memsize(void) 14{ 15 /* 16 * WARNING: We must override get_effective_memsize() function here 17 * to report only the size of the first DRAM bank. This is to make 18 * U-Boot relocator place U-Boot into valid memory, that is, at the 19 * end of the first DRAM bank. If we did not override this function 20 * like so, U-Boot would be placed at the address of the first DRAM 21 * bank + total DRAM size - sizeof(uboot), which in the setup where 22 * each DRAM bank contains 512MiB of DRAM would result in placing 23 * U-Boot into invalid memory area close to the end of the first 24 * DRAM bank. 25 */ 26 return get_ram_size((void *)PHYS_SDRAM_1, 1 << 30); 27} 28 29int dram_init(void) 30{ 31 gd->ram_size = get_ram_size((void *)PHYS_SDRAM_1, 1 << 30); 32 gd->ram_size += get_ram_size((void *)PHYS_SDRAM_2, 1 << 30); 33 34 return 0; 35} 36 37int dram_init_banksize(void) 38{ 39 gd->bd->bi_dram[0].start = PHYS_SDRAM_1; 40 gd->bd->bi_dram[0].size = get_ram_size((void *)PHYS_SDRAM_1, 1 << 30); 41 42 gd->bd->bi_dram[1].start = PHYS_SDRAM_2; 43 gd->bd->bi_dram[1].size = get_ram_size((void *)PHYS_SDRAM_2, 1 << 30); 44 45 return 0; 46} 47