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