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
|
/*
* (c) 2011 Graf-Syteco, Matthias Weisser
* <weisserm@arcor.de>
*
* Based on tx25.c:
* (C) Copyright 2009 DENX Software Engineering
* Author: John Rigby <jrigby@gmail.com>
*
* Based on imx27lite.c:
* Copyright (C) 2008,2009 Eric Jarrige <jorasse@users.sourceforge.net>
* Copyright (C) 2009 Ilya Yanok <yanok@emcraft.com>
* And:
* RedBoot tx25_misc.c Copyright (C) 2009 Red Hat
*
* 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/imx25-pinmux.h>
#include <asm/arch/sys_proto.h>
DECLARE_GLOBAL_DATA_PTR;
int board_init()
{
struct iomuxc_mux_ctl *muxctl;
struct iomuxc_pad_ctl *padctl;
struct iomuxc_pad_input_select *inputselect;
u32 gpio_mux_mode0_sion = MX25_PIN_MUX_MODE(0) | MX25_PIN_MUX_SION;
u32 gpio_mux_mode1 = MX25_PIN_MUX_MODE(1);
u32 gpio_mux_mode5 = MX25_PIN_MUX_MODE(5);
u32 gpio_mux_mode6 = MX25_PIN_MUX_MODE(6);
u32 input_select1 = MX25_PAD_INPUT_SELECT_DAISY(1);
u32 input_select2 = MX25_PAD_INPUT_SELECT_DAISY(2);
icache_enable();
muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE;
padctl = (struct iomuxc_pad_ctl *)IMX_IOPADCTL_BASE;
inputselect = (struct iomuxc_pad_input_select *)IMX_IOPADINPUTSEL_BASE;
/* Setup of core volatage selection pin to run at 1.4V */
writel(gpio_mux_mode5, &muxctl->pad_ext_armclk); /* VCORE GPIO3[15] */
gpio_direction_output(IMX_GPIO_NR(3, 15), 1);
/* Setup of input daisy chains for SD card pins*/
writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_cmd);
writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_clk);
writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_data0);
writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_data1);
writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_data2);
writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_data3);
/* Setup of digital output for USB power and OC */
writel(gpio_mux_mode5, &muxctl->pad_csi_d3); /* USB Power GPIO1[28] */
gpio_direction_output(IMX_GPIO_NR(1, 28), 1);
writel(gpio_mux_mode5, &muxctl->pad_csi_d2); /* USB OC GPIO1[27] */
gpio_direction_input(IMX_GPIO_NR(1, 18));
/* Setup of digital output control pins */
writel(gpio_mux_mode5, &muxctl->pad_csi_d8); /* Ouput 1 Ctrl GPIO1[7] */
writel(gpio_mux_mode5, &muxctl->pad_csi_d7); /* Ouput 2 Ctrl GPIO1[6] */
writel(gpio_mux_mode5, &muxctl->pad_csi_d6); /* Ouput 1 Stat GPIO1[31]*/
writel(gpio_mux_mode5, &muxctl->pad_csi_d5); /* Ouput 2 Stat GPIO1[30]*/
writel(0, &padctl->pad_csi_d6); /* Ouput 1 Stat pull up off */
writel(0, &padctl->pad_csi_d5); /* Ouput 2 Stat pull up off */
/* Switch both output drivers off */
gpio_direction_output(IMX_GPIO_NR(1, 7), 0);
gpio_direction_output(IMX_GPIO_NR(1, 6), 0);
/* Setup of key input pin GPIO2[29]*/
writel(gpio_mux_mode5 | MX25_PIN_MUX_SION, &muxctl->pad_kpp_row0);
writel(0, &padctl->pad_kpp_row0); /* Key pull up off */
gpio_direction_input(IMX_GPIO_NR(2, 29));
/* Setup of status LED outputs */
writel(gpio_mux_mode5, &muxctl->pad_csi_d9); /* GPIO4[21] */
writel(gpio_mux_mode5, &muxctl->pad_csi_d4); /* GPIO1[29] */
/* Switch both LEDs off */
gpio_direction_output(IMX_GPIO_NR(4, 21), 0);
gpio_direction_output(IMX_GPIO_NR(1, 29), 0);
/* Setup of CAN1 and CAN2 signals */
writel(gpio_mux_mode6, &muxctl->pad_gpio_a); /* CAN1 TX */
writel(gpio_mux_mode6, &muxctl->pad_gpio_b); /* CAN1 RX */
writel(gpio_mux_mode6, &muxctl->pad_gpio_c); /* CAN2 TX */
writel(gpio_mux_mode6, &muxctl->pad_gpio_d); /* CAN2 RX */
/* Setup of input daisy chains for CAN signals*/
writel(input_select1, &inputselect->can1_ipp_ind_canrx); /* CAN1 RX */
writel(input_select1, &inputselect->can2_ipp_ind_canrx); /* CAN2 RX */
/* Setup of I2C3 signals */
writel(gpio_mux_mode1, &muxctl->pad_cspi1_ss1); /* I2C3 SDA */
writel(gpio_mux_mode1, &muxctl->pad_gpio_e); /* I2C3 SCL */
/* Setup of input daisy chains for I2C3 signals*/
writel(input_select1, &inputselect->i2c3_ipp_sda_in); /* I2C3 SDA */
writel(input_select2, &inputselect->i2c3_ipp_scl_in); /* I2C3 SCL */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
return 0;
}
int board_late_init(void)
{
const char *e;
#ifdef CONFIG_FEC_MXC
struct iomuxc_mux_ctl *muxctl;
u32 gpio_mux_mode2 = MX25_PIN_MUX_MODE(2);
u32 gpio_mux_mode5 = MX25_PIN_MUX_MODE(5);
/*
* fec pin init is generic
*/
mx25_fec_init_pins();
/*
* Set up LAN-RESET and FEC_RX_ERR
*
* LAN-RESET: GPIO3[16] is ALT 5 mode of pin U20
* FEC_RX_ERR: FEC_RX_ERR is ALT 2 mode of pin R2
*/
muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE;
writel(gpio_mux_mode5, &muxctl->pad_upll_bypclk);
writel(gpio_mux_mode2, &muxctl->pad_uart2_cts);
/* assert PHY reset (low) */
gpio_direction_output(IMX_GPIO_NR(3, 16), 0);
udelay(5000);
/* deassert PHY reset */
gpio_set_value(IMX_GPIO_NR(3, 16), 1);
udelay(5000);
#endif
e = getenv("gs_base_board");
if (e != NULL) {
if (strcmp(e, "G283") == 0) {
int key = gpio_get_value(IMX_GPIO_NR(2, 29));
if (key) {
/* Switch on both LEDs to inidcate boot mode */
gpio_set_value(IMX_GPIO_NR(1, 29), 0);
gpio_set_value(IMX_GPIO_NR(4, 21), 0);
setenv("preboot", "run gs_slow_boot");
} else
setenv("preboot", "run gs_fast_boot");
}
}
return 0;
}
int dram_init(void)
{
/* dram_init must store complete ramsize in gd->ram_size */
gd->ram_size = get_ram_size((void *)PHYS_SDRAM,
PHYS_SDRAM_SIZE);
return 0;
}
|
