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 
17 DECLARE_GLOBAL_DATA_PTR;
18 
dram_init(void)19 int dram_init(void)
20 {
21 #ifndef CONFIG_SUPPORT_SPL
22 	int rv;
23 	struct udevice *dev;
24 
25 	rv = uclass_get_device(UCLASS_RAM, 0, &dev);
26 	if (rv) {
27 		debug("DRAM init failed: %d\n", rv);
28 		return rv;
29 	}
30 
31 #endif
32 	return fdtdec_setup_mem_size_base();
33 }
34 
dram_init_banksize(void)35 int dram_init_banksize(void)
36 {
37 	return fdtdec_setup_memory_banksize();
38 }
39 
40 #ifdef CONFIG_SPL_BUILD
41 #ifdef CONFIG_SPL_OS_BOOT
spl_start_uboot(void)42 int spl_start_uboot(void)
43 {
44 	debug("SPL: booting kernel\n");
45 	/* break into full u-boot on 'c' */
46 	return serial_tstc() && serial_getc() == 'c';
47 }
48 #endif
49 
spl_dram_init(void)50 int spl_dram_init(void)
51 {
52 	struct udevice *dev;
53 	int rv;
54 
55 	rv = uclass_get_device(UCLASS_RAM, 0, &dev);
56 	if (rv)
57 		debug("DRAM init failed: %d\n", rv);
58 	return rv;
59 }
60 
spl_board_init(void)61 void spl_board_init(void)
62 {
63 	spl_dram_init();
64 	preloader_console_init();
65 	arch_cpu_init(); /* to configure mpu for sdram rw permissions */
66 }
67 
spl_boot_device(void)68 u32 spl_boot_device(void)
69 {
70 	return BOOT_DEVICE_MMC1;
71 }
72 #endif
73 
get_board_rev(void)74 u32 get_board_rev(void)
75 {
76 	return 0;
77 }
78 
board_init(void)79 int board_init(void)
80 {
81 	gd->bd->bi_boot_params = gd->bd->bi_dram[0].start + 0x100;
82 
83 	return 0;
84 }
85