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1 | /* |
2 | * (C) Copyright 2004-2008 | |
3 | * Texas Instruments, <www.ti.com> | |
4 | * | |
5 | * Author : | |
6 | * Sunil Kumar <sunilsaini05@gmail.com> | |
7 | * Shashi Ranjan <shashiranjanmca05@gmail.com> | |
8 | * | |
9 | * Derived from Beagle Board and 3430 SDP code by | |
10 | * Richard Woodruff <r-woodruff2@ti.com> | |
11 | * Syed Mohammed Khasim <khasim@ti.com> | |
12 | * | |
13 | * | |
14 | * See file CREDITS for list of people who contributed to this | |
15 | * project. | |
16 | * | |
17 | * This program is free software; you can redistribute it and/or | |
18 | * modify it under the terms of the GNU General Public License as | |
19 | * published by the Free Software Foundation; either version 2 of | |
20 | * the License, or (at your option) any later version. | |
21 | * | |
22 | * This program is distributed in the hope that it will be useful, | |
23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
25 | * GNU General Public License for more details. | |
26 | * | |
27 | * You should have received a copy of the GNU General Public License | |
28 | * along with this program; if not, write to the Free Software | |
29 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
30 | * MA 02111-1307 USA | |
31 | */ | |
32 | #include <common.h> | |
33 | #include <asm/io.h> | |
34 | #include <asm/arch/mux.h> | |
35 | #include <asm/arch/sys_proto.h> | |
36 | #include <asm/mach-types.h> | |
37 | #include "beagle.h" | |
38 | ||
f956fd03 DB |
39 | static int beagle_revision_c; |
40 | ||
f904cdbb DB |
41 | /****************************************************************************** |
42 | * Routine: board_init | |
43 | * Description: Early hardware init. | |
44 | *****************************************************************************/ | |
45 | int board_init(void) | |
46 | { | |
47 | DECLARE_GLOBAL_DATA_PTR; | |
48 | ||
49 | gpmc_init(); /* in SRAM or SDRAM, finish GPMC */ | |
50 | /* board id for Linux */ | |
51 | gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE; | |
52 | /* boot param addr */ | |
53 | gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
f956fd03 DB |
58 | /****************************************************************************** |
59 | * Routine: beagle_get_revision | |
60 | * Description: Return revision of the BeagleBoard this code is running on. | |
61 | * If it is a revision Ax/Bx board, this function returns 0, | |
62 | * on a revision C board you will get a 1. | |
63 | *****************************************************************************/ | |
64 | int beagle_get_revision(void) | |
65 | { | |
66 | return beagle_revision_c; | |
67 | } | |
68 | ||
69 | /****************************************************************************** | |
70 | * Routine: beagle_identify | |
71 | * Description: Detect if we are running on a Beagle revision Ax/Bx or | |
72 | * Cx. This can be done by GPIO_171. If this is low, we are | |
73 | * running on a revision C board. | |
74 | *****************************************************************************/ | |
75 | void beagle_identify(void) | |
76 | { | |
77 | gpio_t *gpio6_base = (gpio_t *)OMAP34XX_GPIO6_BASE; | |
78 | ||
79 | /* Configure GPIO 171 as input */ | |
80 | writel(readl(&gpio6_base->oe) | GPIO11, &gpio6_base->oe); | |
81 | ||
82 | /* Get value of GPIO 171 */ | |
83 | beagle_revision_c = readl(&gpio6_base->datain) & BOARD_REVISION_MASK; | |
84 | ||
85 | printf("Board revision "); | |
86 | if (beagle_revision_c) { | |
87 | printf("Ax/Bx\n"); | |
88 | beagle_revision_c = 0; | |
89 | } else { | |
90 | printf("C\n"); | |
91 | beagle_revision_c = 1; | |
92 | } | |
93 | } | |
94 | ||
f904cdbb DB |
95 | /****************************************************************************** |
96 | * Routine: misc_init_r | |
97 | * Description: Configure board specific parts | |
98 | *****************************************************************************/ | |
99 | int misc_init_r(void) | |
100 | { | |
101 | gpio_t *gpio5_base = (gpio_t *)OMAP34XX_GPIO5_BASE; | |
102 | gpio_t *gpio6_base = (gpio_t *)OMAP34XX_GPIO6_BASE; | |
103 | ||
104 | power_init_r(); | |
105 | ||
106 | /* Configure GPIOs to output */ | |
107 | writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe); | |
108 | writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | | |
109 | GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe); | |
110 | ||
111 | /* Set GPIOs */ | |
112 | writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1, | |
113 | &gpio6_base->setdataout); | |
114 | writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | | |
115 | GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout); | |
116 | ||
f956fd03 DB |
117 | beagle_identify(); |
118 | ||
f904cdbb DB |
119 | return 0; |
120 | } | |
121 | ||
122 | /****************************************************************************** | |
123 | * Routine: set_muxconf_regs | |
124 | * Description: Setting up the configuration Mux registers specific to the | |
125 | * hardware. Many pins need to be moved from protect to primary | |
126 | * mode. | |
127 | *****************************************************************************/ | |
128 | void set_muxconf_regs(void) | |
129 | { | |
130 | MUX_BEAGLE(); | |
131 | } |