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John Rigby6895d452010-01-25 23:12:58 -07001/*
2 * (C) Copyright 2009 DENX Software Engineering
3 * Author: John Rigby <jrigby@gmail.com>
4 *
5 * Based on imx27lite.c:
6 * Copyright (C) 2008,2009 Eric Jarrige <jorasse@users.sourceforge.net>
7 * Copyright (C) 2009 Ilya Yanok <yanok@emcraft.com>
8 * And:
9 * RedBoot tx25_misc.c Copyright (C) 2009 Red Hat
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 * MA 02111-1307 USA
25 *
26 */
27#include <common.h>
28#include <asm/io.h>
29#include <asm/arch/imx-regs.h>
30#include <asm/arch/imx25-pinmux.h>
Fabio Estevamc2205f42011-08-29 04:27:06 +000031#include <asm/gpio.h>
Fabio Estevame6d9b972011-09-06 09:05:42 +000032#include <asm/arch/sys_proto.h>
John Rigby6895d452010-01-25 23:12:58 -070033
John Rigby6895d452010-01-25 23:12:58 -070034DECLARE_GLOBAL_DATA_PTR;
35
Benoît Thébaudeauda962b72013-04-11 09:35:51 +000036#ifdef CONFIG_SPL_BUILD
37void board_init_f(ulong bootflag)
38{
Benoît Thébaudeau5c6db122013-04-11 09:35:53 +000039 relocate_code(CONFIG_SPL_TEXT_BASE);
Benoît Thébaudeauda962b72013-04-11 09:35:51 +000040 asm volatile("ldr pc, =nand_boot");
41}
42#endif
43
John Rigby6895d452010-01-25 23:12:58 -070044#ifdef CONFIG_FEC_MXC
Stefano Babic5fecb362012-08-19 21:33:50 +000045#define GPIO_FEC_RESET_B IMX_GPIO_NR(4, 7)
46#define GPIO_FEC_ENABLE_B IMX_GPIO_NR(4, 9)
Wolfgang Denk6e2fbde2012-09-02 00:44:09 +020047
John Rigby6895d452010-01-25 23:12:58 -070048void tx25_fec_init(void)
49{
50 struct iomuxc_mux_ctl *muxctl;
51 struct iomuxc_pad_ctl *padctl;
John Rigby6895d452010-01-25 23:12:58 -070052 u32 gpio_mux_mode = MX25_PIN_MUX_MODE(5);
John Rigby6895d452010-01-25 23:12:58 -070053 u32 saved_rdata0_mode, saved_rdata1_mode, saved_rx_dv_mode;
54
55 debug("tx25_fec_init\n");
56 /*
57 * fec pin init is generic
58 */
59 mx25_fec_init_pins();
60
61 /*
62 * Set up the FEC_RESET_B and FEC_ENABLE GPIO pins.
63 *
64 * FEC_RESET_B: gpio4[7] is ALT 5 mode of pin D13
65 * FEC_ENABLE_B: gpio4[9] is ALT 5 mode of pin D11
66 */
67 muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE;
68 padctl = (struct iomuxc_pad_ctl *)IMX_IOPADCTL_BASE;
69
70 writel(gpio_mux_mode, &muxctl->pad_d13);
71 writel(gpio_mux_mode, &muxctl->pad_d11);
72
73 writel(0x0, &padctl->pad_d13);
74 writel(0x0, &padctl->pad_d11);
75
76 /* drop PHY power and assert reset (low) */
Vikram Narayanan09891232012-06-16 07:16:17 +000077 gpio_direction_output(GPIO_FEC_RESET_B, 0);
78 gpio_direction_output(GPIO_FEC_ENABLE_B, 0);
John Rigby6895d452010-01-25 23:12:58 -070079
80 mdelay(5);
81
82 debug("resetting phy\n");
83
84 /* turn on PHY power leaving reset asserted */
Vikram Narayanan09891232012-06-16 07:16:17 +000085 gpio_set_value(GPIO_FEC_ENABLE_B, 1);
John Rigby6895d452010-01-25 23:12:58 -070086
87 mdelay(10);
88
89 /*
90 * Setup some strapping pins that are latched by the PHY
91 * as reset goes high.
92 *
93 * Set PHY mode to 111
94 * mode0 comes from FEC_RDATA0 which is GPIO 3_10 in mux mode 5
95 * mode1 comes from FEC_RDATA1 which is GPIO 3_11 in mux mode 5
96 * mode2 is tied high so nothing to do
97 *
98 * Turn on RMII mode
99 * RMII mode is selected by FEC_RX_DV which is GPIO 3_12 in mux mode
100 */
101 /*
102 * save three current mux modes and set each to gpio mode
103 */
104 saved_rdata0_mode = readl(&muxctl->pad_fec_rdata0);
105 saved_rdata1_mode = readl(&muxctl->pad_fec_rdata1);
106 saved_rx_dv_mode = readl(&muxctl->pad_fec_rx_dv);
107
108 writel(gpio_mux_mode, &muxctl->pad_fec_rdata0);
109 writel(gpio_mux_mode, &muxctl->pad_fec_rdata1);
110 writel(gpio_mux_mode, &muxctl->pad_fec_rx_dv);
111
112 /*
113 * set each to 1 and make each an output
114 */
Stefano Babic5fecb362012-08-19 21:33:50 +0000115 gpio_direction_output(IMX_GPIO_NR(3, 10), 1);
116 gpio_direction_output(IMX_GPIO_NR(3, 11), 1);
117 gpio_direction_output(IMX_GPIO_NR(3, 12), 1);
John Rigby6895d452010-01-25 23:12:58 -0700118
119 mdelay(22); /* this value came from RedBoot */
120
121 /*
122 * deassert PHY reset
123 */
Vikram Narayanan09891232012-06-16 07:16:17 +0000124 gpio_set_value(GPIO_FEC_RESET_B, 1);
John Rigby6895d452010-01-25 23:12:58 -0700125
126 mdelay(5);
127
128 /*
129 * set FEC pins back
130 */
131 writel(saved_rdata0_mode, &muxctl->pad_fec_rdata0);
132 writel(saved_rdata1_mode, &muxctl->pad_fec_rdata1);
133 writel(saved_rx_dv_mode, &muxctl->pad_fec_rx_dv);
134}
135#else
136#define tx25_fec_init()
137#endif
138
139int board_init()
140{
141#ifdef CONFIG_MXC_UART
Fabio Estevam9aa720b2011-03-02 10:14:27 +0100142 mx25_uart1_init_pins();
John Rigby6895d452010-01-25 23:12:58 -0700143#endif
Anatolij Gustschin87db58d2010-04-21 13:52:38 +0200144 /* board id for linux */
Anatolij Gustschin87db58d2010-04-21 13:52:38 +0200145 gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
John Rigby6895d452010-01-25 23:12:58 -0700146 return 0;
147}
148
149int board_late_init(void)
150{
151 tx25_fec_init();
152 return 0;
153}
154
Fabio Estevam77f11a92011-10-13 05:34:59 +0000155int dram_init(void)
John Rigby6895d452010-01-25 23:12:58 -0700156{
Heiko Schocherab86f722010-09-17 13:10:42 +0200157 /* dram_init must store complete ramsize in gd->ram_size */
Albert ARIBAUDa55d23c2011-07-03 05:55:33 +0000158 gd->ram_size = get_ram_size((void *)PHYS_SDRAM_1,
Heiko Schocherab86f722010-09-17 13:10:42 +0200159 PHYS_SDRAM_1_SIZE);
160 return 0;
161}
John Rigby6895d452010-01-25 23:12:58 -0700162
Heiko Schocherab86f722010-09-17 13:10:42 +0200163void dram_init_banksize(void)
164{
John Rigby6895d452010-01-25 23:12:58 -0700165 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
Albert ARIBAUDa55d23c2011-07-03 05:55:33 +0000166 gd->bd->bi_dram[0].size = get_ram_size((void *)PHYS_SDRAM_1,
John Rigby6895d452010-01-25 23:12:58 -0700167 PHYS_SDRAM_1_SIZE);
168#if CONFIG_NR_DRAM_BANKS > 1
169 gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
Albert ARIBAUDa55d23c2011-07-03 05:55:33 +0000170 gd->bd->bi_dram[1].size = get_ram_size((void *)PHYS_SDRAM_2,
John Rigby6895d452010-01-25 23:12:58 -0700171 PHYS_SDRAM_2_SIZE);
Heiko Schocherab86f722010-09-17 13:10:42 +0200172#else
John Rigby6895d452010-01-25 23:12:58 -0700173
Heiko Schocherab86f722010-09-17 13:10:42 +0200174#endif
John Rigby6895d452010-01-25 23:12:58 -0700175}
176
177int checkboard(void)
178{
179 printf("KARO TX25\n");
180 return 0;
181}