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1 | /* |
2 | * Copyright (C) 2011 OMICRON electronics GmbH | |
3 | * | |
4 | * Based on da850evm.c. Original Copyrights follow: | |
5 | * | |
6 | * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ | |
7 | * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com> | |
8 | * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
23 | */ | |
24 | ||
25 | #include <common.h> | |
26 | #include <i2c.h> | |
27 | #include <net.h> | |
28 | #include <netdev.h> | |
29 | #include <watchdog.h> | |
30 | #include <asm/io.h> | |
31 | #include <asm/arch/hardware.h> | |
32 | #include <asm/arch/gpio.h> | |
33 | #include <asm/arch/emif_defs.h> | |
34 | #include <asm/arch/emac_defs.h> | |
35 | #include <asm/arch/pinmux_defs.h> | |
36 | #include <asm/arch/davinci_misc.h> | |
37 | #include <asm/arch/timer_defs.h> | |
38 | ||
39 | DECLARE_GLOBAL_DATA_PTR; | |
40 | ||
41 | #define CALIMAIN_HWVERSION_MASK 0x7f000000 | |
42 | #define CALIMAIN_HWVERSION_SHIFT 24 | |
43 | ||
44 | /* Hardware version pinmux settings */ | |
45 | const struct pinmux_config hwversion_pins[] = { | |
46 | { pinmux(16), 8, 2 }, /* GP7[15] */ | |
47 | { pinmux(16), 8, 3 }, /* GP7[14] */ | |
48 | { pinmux(16), 8, 4 }, /* GP7[13] */ | |
49 | { pinmux(16), 8, 5 }, /* GP7[12] */ | |
50 | { pinmux(16), 8, 6 }, /* GP7[11] */ | |
51 | { pinmux(16), 8, 7 }, /* GP7[10] */ | |
52 | { pinmux(17), 8, 0 }, /* GP7[9] */ | |
53 | { pinmux(17), 8, 1 } /* GP7[8] */ | |
54 | }; | |
55 | ||
56 | const struct pinmux_resource pinmuxes[] = { | |
57 | PINMUX_ITEM(uart2_pins_txrx), | |
58 | PINMUX_ITEM(emac_pins_mii), | |
59 | PINMUX_ITEM(emac_pins_mdio), | |
60 | PINMUX_ITEM(emifa_pins_nor), | |
61 | PINMUX_ITEM(emifa_pins_cs2), | |
62 | PINMUX_ITEM(emifa_pins_cs3), | |
63 | }; | |
64 | ||
65 | const int pinmuxes_size = ARRAY_SIZE(pinmuxes); | |
66 | ||
67 | const struct lpsc_resource lpsc[] = { | |
68 | { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */ | |
69 | { DAVINCI_LPSC_EMAC }, /* image download */ | |
70 | { DAVINCI_LPSC_UART2 }, /* console */ | |
71 | { DAVINCI_LPSC_GPIO }, | |
72 | }; | |
73 | ||
74 | const int lpsc_size = ARRAY_SIZE(lpsc); | |
75 | ||
76 | /* read board revision from GPIO7[8..14] */ | |
77 | u32 get_board_rev(void) | |
78 | { | |
79 | lpsc_on(DAVINCI_LPSC_GPIO); | |
80 | if (davinci_configure_pin_mux(hwversion_pins, | |
81 | ARRAY_SIZE(hwversion_pins)) != 0) | |
82 | return 0xffffffff; | |
83 | ||
84 | return (davinci_gpio_bank67->in_data & CALIMAIN_HWVERSION_MASK) | |
85 | >> CALIMAIN_HWVERSION_SHIFT; | |
86 | } | |
87 | ||
88 | /* | |
89 | * determine the oscillator frequency depending on the board revision | |
90 | * | |
91 | * rev 0x00 ... 25 MHz oscillator | |
92 | * rev 0x01 ... 24 MHz oscillator | |
93 | */ | |
94 | int calimain_get_osc_freq(void) | |
95 | { | |
96 | u32 rev; | |
97 | int freq; | |
98 | ||
99 | rev = get_board_rev(); | |
100 | switch (rev) { | |
101 | case 0x00: | |
102 | freq = 25000000; | |
103 | break; | |
104 | default: | |
105 | freq = 24000000; | |
106 | break; | |
107 | } | |
108 | return freq; | |
109 | } | |
110 | ||
111 | int board_init(void) | |
112 | { | |
113 | int val; | |
114 | ||
115 | #ifndef CONFIG_USE_IRQ | |
116 | irq_init(); | |
117 | #endif | |
118 | ||
119 | /* address of boot parameters */ | |
120 | gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR; | |
121 | ||
122 | #ifdef CONFIG_DRIVER_TI_EMAC | |
123 | /* select emac MII mode */ | |
124 | val = readl(&davinci_syscfg_regs->cfgchip3); | |
125 | val &= ~(1 << 8); | |
126 | writel(val, &davinci_syscfg_regs->cfgchip3); | |
127 | #endif /* CONFIG_DRIVER_TI_EMAC */ | |
128 | ||
129 | #ifdef CONFIG_HW_WATCHDOG | |
130 | davinci_hw_watchdog_enable(); | |
131 | #endif | |
132 | ||
133 | printf("Input clock frequency: %d Hz\n", calimain_get_osc_freq()); | |
134 | printf("Board revision: %d\n", get_board_rev()); | |
135 | ||
136 | return 0; | |
137 | } | |
138 | ||
139 | #ifdef CONFIG_DRIVER_TI_EMAC | |
140 | /* | |
141 | * Initializes on-board ethernet controllers. | |
142 | */ | |
143 | int board_eth_init(bd_t *bis) | |
144 | { | |
145 | if (!davinci_emac_initialize()) { | |
146 | printf("Error: Ethernet init failed!\n"); | |
147 | return -1; | |
148 | } | |
149 | ||
150 | return 0; | |
151 | } | |
152 | #endif /* CONFIG_DRIVER_TI_EMAC */ | |
153 | ||
154 | #ifdef CONFIG_HW_WATCHDOG | |
155 | void hw_watchdog_reset(void) | |
156 | { | |
157 | davinci_hw_watchdog_reset(); | |
158 | } | |
159 | #endif |