1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2015 Stefan Roese <sr@denx.de>
4 */
5
6 #include <common.h>
7 #include <i2c.h>
8 #include <init.h>
9 #include <asm/global_data.h>
10 #include <asm/gpio.h>
11 #include <linux/bitops.h>
12 #include <linux/mbus.h>
13 #include <linux/io.h>
14 #include <asm/arch/cpu.h>
15 #include <asm/arch/soc.h>
16
17 DECLARE_GLOBAL_DATA_PTR;
18
19 /*
20 * These values and defines are taken from the Marvell U-Boot version
21 * "u-boot-2013.01-2016_T1.0.eng_drop_v6"
22 */
23 #define DB_DX_AC3_GPP_OUT_ENA_LOW (~(BIT(0) | BIT(2) | BIT(3) | BIT(4) \
24 | BIT(6) | BIT(12) | BIT(13) \
25 | BIT(16) | BIT(17) | BIT(20) \
26 | BIT(29) | BIT(30)))
27 #define DB_DX_AC3_GPP_OUT_ENA_MID (~(0))
28 #define DB_DX_AC3_GPP_OUT_VAL_LOW (BIT(0) | BIT(2) | BIT(3) | BIT(4) \
29 | BIT(6) | BIT(12) | BIT(13) \
30 | BIT(16) | BIT(17) | BIT(20) \
31 | BIT(29) | BIT(30))
32 #define DB_DX_AC3_GPP_OUT_VAL_MID 0x0
33 #define DB_DX_AC3_GPP_POL_LOW 0x0
34 #define DB_DX_AC3_GPP_POL_MID 0x0
35
board_early_init_f(void)36 int board_early_init_f(void)
37 {
38 /* Configure MPP */
39 writel(0x00142222, MVEBU_MPP_BASE + 0x00);
40 writel(0x11122000, MVEBU_MPP_BASE + 0x04);
41 writel(0x44444004, MVEBU_MPP_BASE + 0x08);
42 writel(0x14444444, MVEBU_MPP_BASE + 0x0c);
43 writel(0x00000001, MVEBU_MPP_BASE + 0x10);
44
45 /*
46 * MVEBU_GPIO0_BASE is the User LED
47 * MVEBU_GPIO1_BASE is the Reset Button (currently not used)
48 */
49
50 /* Set GPP Out value */
51 writel(DB_DX_AC3_GPP_OUT_VAL_LOW, MVEBU_GPIO0_BASE + 0x00);
52 /* writel(DB_DX_AC3_GPP_OUT_VAL_MID, MVEBU_GPIO1_BASE + 0x00); */
53
54 /* Set GPP Polarity */
55 writel(DB_DX_AC3_GPP_POL_LOW, MVEBU_GPIO0_BASE + 0x0c);
56 /* writel(DB_DX_AC3_GPP_POL_MID, MVEBU_GPIO1_BASE + 0x0c); */
57
58 /* Set GPP Out Enable */
59 writel(DB_DX_AC3_GPP_OUT_ENA_LOW, MVEBU_GPIO0_BASE + 0x04);
60 /* writel(DB_DX_AC3_GPP_OUT_ENA_MID, MVEBU_GPIO1_BASE + 0x04); */
61
62 return 0;
63 }
64
board_init(void)65 int board_init(void)
66 {
67 /* address of boot parameters */
68 gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100;
69
70 return 0;
71 }
72
checkboard(void)73 int checkboard(void)
74 {
75 puts("Board: " CONFIG_SYS_BOARD "\n");
76
77 return 0;
78 }
79