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9a3aae22 CR |
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 | * | |
1a459660 | 10 | * SPDX-License-Identifier: GPL-2.0+ |
9a3aae22 CR |
11 | */ |
12 | ||
13 | #include <common.h> | |
14 | #include <i2c.h> | |
15 | #include <net.h> | |
16 | #include <netdev.h> | |
17 | #include <watchdog.h> | |
18 | #include <asm/io.h> | |
19 | #include <asm/arch/hardware.h> | |
20 | #include <asm/arch/gpio.h> | |
21 | #include <asm/arch/emif_defs.h> | |
22 | #include <asm/arch/emac_defs.h> | |
23 | #include <asm/arch/pinmux_defs.h> | |
24 | #include <asm/arch/davinci_misc.h> | |
25 | #include <asm/arch/timer_defs.h> | |
26 | ||
27 | DECLARE_GLOBAL_DATA_PTR; | |
28 | ||
29 | #define CALIMAIN_HWVERSION_MASK 0x7f000000 | |
30 | #define CALIMAIN_HWVERSION_SHIFT 24 | |
31 | ||
32 | /* Hardware version pinmux settings */ | |
33 | const struct pinmux_config hwversion_pins[] = { | |
34 | { pinmux(16), 8, 2 }, /* GP7[15] */ | |
35 | { pinmux(16), 8, 3 }, /* GP7[14] */ | |
36 | { pinmux(16), 8, 4 }, /* GP7[13] */ | |
37 | { pinmux(16), 8, 5 }, /* GP7[12] */ | |
38 | { pinmux(16), 8, 6 }, /* GP7[11] */ | |
39 | { pinmux(16), 8, 7 }, /* GP7[10] */ | |
40 | { pinmux(17), 8, 0 }, /* GP7[9] */ | |
41 | { pinmux(17), 8, 1 } /* GP7[8] */ | |
42 | }; | |
43 | ||
44 | const struct pinmux_resource pinmuxes[] = { | |
45 | PINMUX_ITEM(uart2_pins_txrx), | |
46 | PINMUX_ITEM(emac_pins_mii), | |
47 | PINMUX_ITEM(emac_pins_mdio), | |
48 | PINMUX_ITEM(emifa_pins_nor), | |
49 | PINMUX_ITEM(emifa_pins_cs2), | |
50 | PINMUX_ITEM(emifa_pins_cs3), | |
51 | }; | |
52 | ||
53 | const int pinmuxes_size = ARRAY_SIZE(pinmuxes); | |
54 | ||
55 | const struct lpsc_resource lpsc[] = { | |
56 | { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */ | |
57 | { DAVINCI_LPSC_EMAC }, /* image download */ | |
58 | { DAVINCI_LPSC_UART2 }, /* console */ | |
59 | { DAVINCI_LPSC_GPIO }, | |
60 | }; | |
61 | ||
62 | const int lpsc_size = ARRAY_SIZE(lpsc); | |
63 | ||
64 | /* read board revision from GPIO7[8..14] */ | |
65 | u32 get_board_rev(void) | |
66 | { | |
67 | lpsc_on(DAVINCI_LPSC_GPIO); | |
68 | if (davinci_configure_pin_mux(hwversion_pins, | |
69 | ARRAY_SIZE(hwversion_pins)) != 0) | |
70 | return 0xffffffff; | |
71 | ||
72 | return (davinci_gpio_bank67->in_data & CALIMAIN_HWVERSION_MASK) | |
73 | >> CALIMAIN_HWVERSION_SHIFT; | |
74 | } | |
75 | ||
76 | /* | |
77 | * determine the oscillator frequency depending on the board revision | |
78 | * | |
79 | * rev 0x00 ... 25 MHz oscillator | |
80 | * rev 0x01 ... 24 MHz oscillator | |
81 | */ | |
82 | int calimain_get_osc_freq(void) | |
83 | { | |
84 | u32 rev; | |
85 | int freq; | |
86 | ||
87 | rev = get_board_rev(); | |
88 | switch (rev) { | |
89 | case 0x00: | |
90 | freq = 25000000; | |
91 | break; | |
92 | default: | |
93 | freq = 24000000; | |
94 | break; | |
95 | } | |
96 | return freq; | |
97 | } | |
98 | ||
99 | int board_init(void) | |
100 | { | |
101 | int val; | |
102 | ||
103 | #ifndef CONFIG_USE_IRQ | |
104 | irq_init(); | |
105 | #endif | |
106 | ||
107 | /* address of boot parameters */ | |
108 | gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR; | |
109 | ||
110 | #ifdef CONFIG_DRIVER_TI_EMAC | |
111 | /* select emac MII mode */ | |
112 | val = readl(&davinci_syscfg_regs->cfgchip3); | |
113 | val &= ~(1 << 8); | |
114 | writel(val, &davinci_syscfg_regs->cfgchip3); | |
115 | #endif /* CONFIG_DRIVER_TI_EMAC */ | |
116 | ||
117 | #ifdef CONFIG_HW_WATCHDOG | |
118 | davinci_hw_watchdog_enable(); | |
119 | #endif | |
120 | ||
121 | printf("Input clock frequency: %d Hz\n", calimain_get_osc_freq()); | |
122 | printf("Board revision: %d\n", get_board_rev()); | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | #ifdef CONFIG_DRIVER_TI_EMAC | |
128 | /* | |
129 | * Initializes on-board ethernet controllers. | |
130 | */ | |
131 | int board_eth_init(bd_t *bis) | |
132 | { | |
133 | if (!davinci_emac_initialize()) { | |
134 | printf("Error: Ethernet init failed!\n"); | |
135 | return -1; | |
136 | } | |
137 | ||
138 | return 0; | |
139 | } | |
140 | #endif /* CONFIG_DRIVER_TI_EMAC */ | |
141 | ||
142 | #ifdef CONFIG_HW_WATCHDOG | |
143 | void hw_watchdog_reset(void) | |
144 | { | |
145 | davinci_hw_watchdog_reset(); | |
146 | } | |
147 | #endif |