summaryrefslogtreecommitdiff
path: root/board/denx/m28evk/m28evk.c
blob: fcee046e1d9b833436dbc3a9a1e80d4455cf56af (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
/*
 * DENX M28 module
 *
 * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
 * on behalf of DENX Software Engineering GmbH
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux-mx28.h>
#include <asm/arch/clock.h>
#include <asm/arch/sys_proto.h>
#include <linux/mii.h>
#include <miiphy.h>
#include <netdev.h>
#include <errno.h>

DECLARE_GLOBAL_DATA_PTR;

/*
 * Functions
 */
int board_early_init_f(void)
{
	/* IO0 clock at 480MHz */
	mx28_set_ioclk(MXC_IOCLK0, 480000);
	/* IO1 clock at 480MHz */
	mx28_set_ioclk(MXC_IOCLK1, 480000);

	/* SSP0 clock at 96MHz */
	mx28_set_sspclk(MXC_SSPCLK0, 96000, 0);
	/* SSP2 clock at 96MHz */
	mx28_set_sspclk(MXC_SSPCLK2, 96000, 0);

#ifdef	CONFIG_CMD_USB
	mxs_iomux_setup_pad(MX28_PAD_SSP2_SS1__USB1_OVERCURRENT);
	mxs_iomux_setup_pad(MX28_PAD_AUART3_TX__GPIO_3_13 |
			MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP);
	gpio_direction_output(MX28_PAD_AUART3_TX__GPIO_3_13, 0);
#endif

	return 0;
}

int board_init(void)
{
	/* Adress of boot parameters */
	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;

	return 0;
}

#define	HW_DIGCTRL_SCRATCH0	0x8001c280
#define	HW_DIGCTRL_SCRATCH1	0x8001c290
int dram_init(void)
{
	uint32_t sz[2];

	sz[0] = readl(HW_DIGCTRL_SCRATCH0);
	sz[1] = readl(HW_DIGCTRL_SCRATCH1);

	if (sz[0] != sz[1]) {
		printf("MX28:\n"
			"Error, the RAM size in HW_DIGCTRL_SCRATCH0 and\n"
			"HW_DIGCTRL_SCRATCH1 is not the same. Please\n"
			"verify these two registers contain valid RAM size!\n");
		hang();
	}

	gd->ram_size = sz[0];
	return 0;
}

#ifdef	CONFIG_CMD_MMC
static int m28_mmc_wp(int id)
{
	if (id != 0) {
		printf("MXS MMC: Invalid card selected (card id = %d)\n", id);
		return 1;
	}

	return gpio_get_value(MX28_PAD_AUART2_CTS__GPIO_3_10);
}

int board_mmc_init(bd_t *bis)
{
	/* Configure WP as input. */
	gpio_direction_input(MX28_PAD_AUART2_CTS__GPIO_3_10);

	return mxsmmc_initialize(bis, 0, m28_mmc_wp);
}
#endif

#ifdef	CONFIG_CMD_NET

#define	MII_OPMODE_STRAP_OVERRIDE	0x16
#define	MII_PHY_CTRL1			0x1e
#define	MII_PHY_CTRL2			0x1f

int fecmxc_mii_postcall(int phy)
{
	miiphy_write("FEC1", phy, MII_BMCR, 0x9000);
	miiphy_write("FEC1", phy, MII_OPMODE_STRAP_OVERRIDE, 0x0202);
	if (phy == 3)
		miiphy_write("FEC1", 3, MII_PHY_CTRL2, 0x8180);
	return 0;
}

int board_eth_init(bd_t *bis)
{
	struct mx28_clkctrl_regs *clkctrl_regs =
		(struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
	struct eth_device *dev;
	int ret;

	ret = cpu_eth_init(bis);

	clrsetbits_le32(&clkctrl_regs->hw_clkctrl_enet,
		CLKCTRL_ENET_TIME_SEL_MASK | CLKCTRL_ENET_CLK_OUT_EN,
		CLKCTRL_ENET_TIME_SEL_RMII_CLK);

	ret = fecmxc_initialize_multi(bis, 0, 0, MXS_ENET0_BASE);
	if (ret) {
		printf("FEC MXS: Unable to init FEC0\n");
		return ret;
	}

	ret = fecmxc_initialize_multi(bis, 1, 3, MXS_ENET1_BASE);
	if (ret) {
		printf("FEC MXS: Unable to init FEC1\n");
		return ret;
	}

	dev = eth_get_dev_by_name("FEC0");
	if (!dev) {
		printf("FEC MXS: Unable to get FEC0 device entry\n");
		return -EINVAL;
	}

	ret = fecmxc_register_mii_postcall(dev, fecmxc_mii_postcall);
	if (ret) {
		printf("FEC MXS: Unable to register FEC0 mii postcall\n");
		return ret;
	}

	dev = eth_get_dev_by_name("FEC1");
	if (!dev) {
		printf("FEC MXS: Unable to get FEC1 device entry\n");
		return -EINVAL;
	}

	ret = fecmxc_register_mii_postcall(dev, fecmxc_mii_postcall);
	if (ret) {
		printf("FEC MXS: Unable to register FEC1 mii postcall\n");
		return ret;
	}

	return ret;
}

#ifdef	CONFIG_M28_FEC_MAC_IN_OCOTP

#define	MXS_OCOTP_MAX_TIMEOUT	1000000
void imx_get_mac_from_fuse(char *mac)
{
	struct mx28_ocotp_regs *ocotp_regs =
		(struct mx28_ocotp_regs *)MXS_OCOTP_BASE;
	uint32_t data;

	memset(mac, 0, 6);

	writel(OCOTP_CTRL_RD_BANK_OPEN, &ocotp_regs->hw_ocotp_ctrl_set);

	if (mx28_wait_mask_clr(&ocotp_regs->hw_ocotp_ctrl_reg, OCOTP_CTRL_BUSY,
				MXS_OCOTP_MAX_TIMEOUT)) {
		printf("MXS FEC: Can't get MAC from OCOTP\n");
		return;
	}

	data = readl(&ocotp_regs->hw_ocotp_cust0);

	mac[0] = 0x00;
	mac[1] = 0x04;
	mac[2] = (data >> 24) & 0xff;
	mac[3] = (data >> 16) & 0xff;
	mac[4] = (data >> 8) & 0xff;
	mac[5] = data & 0xff;
}
#else
void imx_get_mac_from_fuse(char *mac)
{
	memset(mac, 0, 6);
}
#endif

#endif