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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 58c5376ba67767ee684069d43e7f747a5d9ae8ed / . / board / atmel / at91sam9260ek / at91sam9260ek.c
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Stelian Pop0176d432008-03-26 18:52:33 +0100[diff] [blame]1/*
2 * (C) Copyright 2007-2008
3 * Stelian Pop <stelian.pop <at> leadtechdesign.com>
4 * Lead Tech Design <www.leadtechdesign.com>
5 *
6 * See file CREDITS for list of people who contributed to this
7 * project.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 * MA 02111-1307 USA
23 */
24
25#include <common.h>
26#include <asm/arch/at91sam9260.h>
27#include <asm/arch/at91sam9260_matrix.h>
28#include <asm/arch/at91sam926x_mc.h>
29#include <asm/arch/at91_pmc.h>
30#include <asm/arch/at91_rstc.h>
31#include <asm/arch/gpio.h>
32#include <asm/arch/io.h>
33#if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB)
34#include <net.h>
35#endif
36
37DECLARE_GLOBAL_DATA_PTR;
38
39/* ------------------------------------------------------------------------- */
40/*
41 * Miscelaneous platform dependent initialisations
42 */
43
44static void at91sam9260ek_serial_hw_init(void)
45{
46#ifdef CONFIG_USART0
47 at91_set_A_periph(AT91_PIN_PB4, 1); /* TXD0 */
48 at91_set_A_periph(AT91_PIN_PB5, 0); /* RXD0 */
49 at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US0);
50#endif
51
52#ifdef CONFIG_USART1
53 at91_set_A_periph(AT91_PIN_PB6, 1); /* TXD1 */
54 at91_set_A_periph(AT91_PIN_PB7, 0); /* RXD1 */
55 at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US1);
56#endif
57
58#ifdef CONFIG_USART2
59 at91_set_A_periph(AT91_PIN_PB8, 1); /* TXD2 */
60 at91_set_A_periph(AT91_PIN_PB9, 0); /* RXD2 */
61 at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US2);
62#endif
63
64#ifdef CONFIG_USART3 /* DBGU */
65 at91_set_A_periph(AT91_PIN_PB14, 0); /* DRXD */
66 at91_set_A_periph(AT91_PIN_PB15, 1); /* DTXD */
67 at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);
68#endif
69}
70
71#ifdef CONFIG_CMD_NAND
72static void at91sam9260ek_nand_hw_init(void)
73{
74 unsigned long csa;
75
76 /* Enable CS3 */
77 csa = at91_sys_read(AT91_MATRIX_EBICSA);
78 at91_sys_write(AT91_MATRIX_EBICSA,
79 csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
80
81 /* Configure SMC CS3 for NAND/SmartMedia */
82 at91_sys_write(AT91_SMC_SETUP(3),
83 AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0) |
84 AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
85 at91_sys_write(AT91_SMC_PULSE(3),
86 AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3) |
87 AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3));
88 at91_sys_write(AT91_SMC_CYCLE(3),
89 AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5));
90 at91_sys_write(AT91_SMC_MODE(3),
91 AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
92 AT91_SMC_EXNWMODE_DISABLE |
93 AT91_SMC_DBW_8 | AT91_SMC_TDF_(2));
94
95 at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOC);
96
97 /* Configure RDY/BSY */
98 at91_set_gpio_input(AT91_PIN_PC13, 1);
99
100 /* Enable NandFlash */
101 at91_set_gpio_output(AT91_PIN_PC14, 1);
102}
103#endif
104
105#ifdef CONFIG_HAS_DATAFLASH
106static void at91sam9260ek_spi_hw_init(void)
107{
108 at91_set_A_periph(AT91_PIN_PA3, 0); /* SPI0_NPCS0 */
109 at91_set_B_periph(AT91_PIN_PC11, 0); /* SPI0_NPCS1 */
110
111 at91_set_A_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */
112 at91_set_A_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */
113 at91_set_A_periph(AT91_PIN_PA2, 0); /* SPI0_SPCK */
114
115 /* Enable clock */
116 at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_SPI0);
117}
118#endif
119
120#ifdef CONFIG_MACB
121static void at91sam9260ek_macb_hw_init(void)
122{
123 /* Enable clock */
124 at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_EMAC);
125
126 /*
127 * Disable pull-up on:
128 * RXDV (PA17) => PHY normal mode (not Test mode)
129 * ERX0 (PA14) => PHY ADDR0
130 * ERX1 (PA15) => PHY ADDR1
131 * ERX2 (PA25) => PHY ADDR2
132 * ERX3 (PA26) => PHY ADDR3
133 * ECRS (PA28) => PHY ADDR4 => PHYADDR = 0x0
134 *
135 * PHY has internal pull-down
136 */
137 writel(pin_to_mask(AT91_PIN_PA14) |
138 pin_to_mask(AT91_PIN_PA15) |
139 pin_to_mask(AT91_PIN_PA17) |
140 pin_to_mask(AT91_PIN_PA25) |
141 pin_to_mask(AT91_PIN_PA26) |
142 pin_to_mask(AT91_PIN_PA28),
143 pin_to_controller(AT91_PIN_PA0) + PIO_PUDR);
144
145 /* Need to reset PHY -> 500ms reset */
146 at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
147 AT91_RSTC_ERSTL | (0x0D << 8) |
148 AT91_RSTC_URSTEN);
149
150 at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_EXTRST);
151
152 /* Wait for end hardware reset */
153 while (!(at91_sys_read(AT91_RSTC_SR) & AT91_RSTC_NRSTL));
154
155 /* Restore NRST value */
156 at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
157 AT91_RSTC_ERSTL | (0x0 << 8) |
158 AT91_RSTC_URSTEN);
159
160 /* Re-enable pull-up */
161 writel(pin_to_mask(AT91_PIN_PA14) |
162 pin_to_mask(AT91_PIN_PA15) |
163 pin_to_mask(AT91_PIN_PA17) |
164 pin_to_mask(AT91_PIN_PA25) |
165 pin_to_mask(AT91_PIN_PA26) |
166 pin_to_mask(AT91_PIN_PA28),
167 pin_to_controller(AT91_PIN_PA0) + PIO_PUER);
168
169 at91_set_A_periph(AT91_PIN_PA19, 0); /* ETXCK_EREFCK */
170 at91_set_A_periph(AT91_PIN_PA17, 0); /* ERXDV */
171 at91_set_A_periph(AT91_PIN_PA14, 0); /* ERX0 */
172 at91_set_A_periph(AT91_PIN_PA15, 0); /* ERX1 */
173 at91_set_A_periph(AT91_PIN_PA18, 0); /* ERXER */
174 at91_set_A_periph(AT91_PIN_PA16, 0); /* ETXEN */
175 at91_set_A_periph(AT91_PIN_PA12, 0); /* ETX0 */
176 at91_set_A_periph(AT91_PIN_PA13, 0); /* ETX1 */
177 at91_set_A_periph(AT91_PIN_PA21, 0); /* EMDIO */
178 at91_set_A_periph(AT91_PIN_PA20, 0); /* EMDC */
179
180#ifndef CONFIG_RMII
181 at91_set_B_periph(AT91_PIN_PA28, 0); /* ECRS */
182 at91_set_B_periph(AT91_PIN_PA29, 0); /* ECOL */
183 at91_set_B_periph(AT91_PIN_PA25, 0); /* ERX2 */
184 at91_set_B_periph(AT91_PIN_PA26, 0); /* ERX3 */
185 at91_set_B_periph(AT91_PIN_PA27, 0); /* ERXCK */
186 at91_set_B_periph(AT91_PIN_PA23, 0); /* ETX2 */
187 at91_set_B_periph(AT91_PIN_PA24, 0); /* ETX3 */
188 at91_set_B_periph(AT91_PIN_PA22, 0); /* ETXER */
189#endif
190
191}
192#endif
193
194int board_init(void)
195{
196 /* Enable Ctrlc */
197 console_init_f();
198
199 /* arch number of AT91SAM9260EK-Board */
200 gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9260EK;
201 /* adress of boot parameters */
202 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
203
204 at91sam9260ek_serial_hw_init();
205#ifdef CONFIG_CMD_NAND
206 at91sam9260ek_nand_hw_init();
207#endif
208#ifdef CONFIG_HAS_DATAFLASH
209 at91sam9260ek_spi_hw_init();
210#endif
211#ifdef CONFIG_MACB
212 at91sam9260ek_macb_hw_init();
213#endif
214
215 return 0;
216}
217
218int dram_init(void)
219{
220 gd->bd->bi_dram[0].start = PHYS_SDRAM;
221 gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
222 return 0;
223}
224
225#ifdef CONFIG_RESET_PHY_R
226void reset_phy(void)
227{
228#ifdef CONFIG_MACB
229 /*
230 * Initialize ethernet HW addr prior to starting Linux,
231 * needed for nfsroot
232 */
233 eth_init(gd->bd);
234#endif
235}
236#endif