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
|
/*
* Copyright (C) 2011 OMICRON electronics GmbH
*
* Based on da850evm.c. Original Copyrights follow:
*
* Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
* Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <common.h>
#include <i2c.h>
#include <net.h>
#include <netdev.h>
#include <watchdog.h>
#include <asm/io.h>
#include <asm/arch/hardware.h>
#include <asm/arch/gpio.h>
#include <asm/arch/emif_defs.h>
#include <asm/arch/emac_defs.h>
#include <asm/arch/pinmux_defs.h>
#include <asm/arch/davinci_misc.h>
#include <asm/arch/timer_defs.h>
DECLARE_GLOBAL_DATA_PTR;
#define CALIMAIN_HWVERSION_MASK 0x7f000000
#define CALIMAIN_HWVERSION_SHIFT 24
/* Hardware version pinmux settings */
const struct pinmux_config hwversion_pins[] = {
{ pinmux(16), 8, 2 }, /* GP7[15] */
{ pinmux(16), 8, 3 }, /* GP7[14] */
{ pinmux(16), 8, 4 }, /* GP7[13] */
{ pinmux(16), 8, 5 }, /* GP7[12] */
{ pinmux(16), 8, 6 }, /* GP7[11] */
{ pinmux(16), 8, 7 }, /* GP7[10] */
{ pinmux(17), 8, 0 }, /* GP7[9] */
{ pinmux(17), 8, 1 } /* GP7[8] */
};
const struct pinmux_resource pinmuxes[] = {
PINMUX_ITEM(uart2_pins_txrx),
PINMUX_ITEM(emac_pins_mii),
PINMUX_ITEM(emac_pins_mdio),
PINMUX_ITEM(emifa_pins_nor),
PINMUX_ITEM(emifa_pins_cs2),
PINMUX_ITEM(emifa_pins_cs3),
};
const int pinmuxes_size = ARRAY_SIZE(pinmuxes);
const struct lpsc_resource lpsc[] = {
{ DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
{ DAVINCI_LPSC_EMAC }, /* image download */
{ DAVINCI_LPSC_UART2 }, /* console */
{ DAVINCI_LPSC_GPIO },
};
const int lpsc_size = ARRAY_SIZE(lpsc);
/* read board revision from GPIO7[8..14] */
u32 get_board_rev(void)
{
lpsc_on(DAVINCI_LPSC_GPIO);
if (davinci_configure_pin_mux(hwversion_pins,
ARRAY_SIZE(hwversion_pins)) != 0)
return 0xffffffff;
return (davinci_gpio_bank67->in_data & CALIMAIN_HWVERSION_MASK)
>> CALIMAIN_HWVERSION_SHIFT;
}
/*
* determine the oscillator frequency depending on the board revision
*
* rev 0x00 ... 25 MHz oscillator
* rev 0x01 ... 24 MHz oscillator
*/
int calimain_get_osc_freq(void)
{
u32 rev;
int freq;
rev = get_board_rev();
switch (rev) {
case 0x00:
freq = 25000000;
break;
default:
freq = 24000000;
break;
}
return freq;
}
int board_init(void)
{
int val;
#ifndef CONFIG_USE_IRQ
irq_init();
#endif
/* address of boot parameters */
gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
#ifdef CONFIG_DRIVER_TI_EMAC
/* select emac MII mode */
val = readl(&davinci_syscfg_regs->cfgchip3);
val &= ~(1 << 8);
writel(val, &davinci_syscfg_regs->cfgchip3);
#endif /* CONFIG_DRIVER_TI_EMAC */
#ifdef CONFIG_HW_WATCHDOG
davinci_hw_watchdog_enable();
#endif
printf("Input clock frequency: %d Hz\n", calimain_get_osc_freq());
printf("Board revision: %d\n", get_board_rev());
return 0;
}
#ifdef CONFIG_DRIVER_TI_EMAC
/*
* Initializes on-board ethernet controllers.
*/
int board_eth_init(bd_t *bis)
{
if (!davinci_emac_initialize()) {
printf("Error: Ethernet init failed!\n");
return -1;
}
return 0;
}
#endif /* CONFIG_DRIVER_TI_EMAC */
#ifdef CONFIG_HW_WATCHDOG
void hw_watchdog_reset(void)
{
davinci_hw_watchdog_reset();
}
#endif
|
