1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) 2020
4 * Author(s): Giulio Benetti <giulio.benetti@benettiengineering.com>
5 */
6
7#include <common.h>
8#include <dm.h>
9#include <init.h>
10#include <log.h>
11#include <ram.h>
12#include <spl.h>
13#include <asm/global_data.h>
14#include <asm/io.h>
15#include <asm/armv7m.h>
16#include <serial.h>
17
18DECLARE_GLOBAL_DATA_PTR;
19
20int dram_init(void)
21{
22#ifndef CONFIG_SUPPORT_SPL
23	int rv;
24	struct udevice *dev;
25
26	rv = uclass_get_device(UCLASS_RAM, 0, &dev);
27	if (rv) {
28		debug("DRAM init failed: %d\n", rv);
29		return rv;
30	}
31
32#endif
33	return fdtdec_setup_mem_size_base();
34}
35
36int dram_init_banksize(void)
37{
38	return fdtdec_setup_memory_banksize();
39}
40
41#ifdef CONFIG_SPL_BUILD
42#ifdef CONFIG_SPL_OS_BOOT
43int spl_start_uboot(void)
44{
45	debug("SPL: booting kernel\n");
46	/* break into full u-boot on 'c' */
47	return serial_tstc() && serial_getc() == 'c';
48}
49#endif
50
51int spl_dram_init(void)
52{
53	struct udevice *dev;
54	int rv;
55
56	rv = uclass_get_device(UCLASS_RAM, 0, &dev);
57	if (rv)
58		debug("DRAM init failed: %d\n", rv);
59	return rv;
60}
61
62void spl_board_init(void)
63{
64	preloader_console_init();
65	spl_dram_init();
66	arch_cpu_init(); /* to configure mpu for sdram rw permissions */
67}
68
69u32 spl_boot_device(void)
70{
71	return BOOT_DEVICE_MMC1;
72}
73#endif
74
75int board_init(void)
76{
77	gd->bd->bi_boot_params = gd->bd->bi_dram[0].start + 0x100;
78
79	return 0;
80}
81