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