tizen 2.4 release
[kernel/u-boot-tm1.git] / board / afeb9260 / afeb9260.c
1 /*
2  * (C) Copyright 2007-2008
3  * Stelian Pop <stelian.pop@leadtechdesign.com>
4  * Lead Tech Design <www.leadtechdesign.com>
5  * (C) Copyright 2008 Sergey Lapin <slapin@ossfans.org>
6  *
7  * See file CREDITS for list of people who contributed to this
8  * project.
9  *
10  * This program is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU General Public License as
12  * published by the Free Software Foundation; either version 2 of
13  * the License, or (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., 59 Temple Place, Suite 330, Boston,
23  * MA 02111-1307 USA
24  */
25
26 #include <common.h>
27 #include <asm/arch/at91sam9260.h>
28 #include <asm/arch/at91sam9260_matrix.h>
29 #include <asm/arch/at91sam9_smc.h>
30 #include <asm/arch/at91_common.h>
31 #include <asm/arch/at91_pmc.h>
32 #include <asm/arch/at91_rstc.h>
33 #include <asm/arch/gpio.h>
34 #include <asm/arch/io.h>
35 #include <asm/arch/hardware.h>
36 #if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB)
37 #include <netdev.h>
38 #include <net.h>
39 #endif
40
41 DECLARE_GLOBAL_DATA_PTR;
42
43 /* ------------------------------------------------------------------------- */
44 /*
45  * Miscelaneous platform dependent initialisations
46  */
47
48 static void afeb9260_nand_hw_init(void)
49 {
50         unsigned long csa;
51
52         /* Enable CS3 */
53         csa = at91_sys_read(AT91_MATRIX_EBICSA);
54         at91_sys_write(AT91_MATRIX_EBICSA,
55                        csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
56
57         /* Configure SMC CS3 for NAND/SmartMedia */
58         at91_sys_write(AT91_SMC_SETUP(3),
59                        AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0) |
60                        AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
61         at91_sys_write(AT91_SMC_PULSE(3),
62                        AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3) |
63                        AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3));
64         at91_sys_write(AT91_SMC_CYCLE(3),
65                        AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5));
66         at91_sys_write(AT91_SMC_MODE(3),
67                        AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
68                        AT91_SMC_EXNWMODE_DISABLE |
69                        AT91_SMC_DBW_8 |
70                        AT91_SMC_TDF_(2));
71
72         at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOC);
73
74         /* Configure RDY/BSY */
75         at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
76
77         /* Enable NandFlash */
78         at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
79 }
80
81 #ifdef CONFIG_MACB
82 static void afeb9260_macb_hw_init(void)
83 {
84         unsigned long rstc;
85
86         /* Enable clock */
87         at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_EMAC);
88
89         /*
90          * Disable pull-up on:
91          *      RXDV (PA17) => PHY normal mode (not Test mode)
92          *      ERX0 (PA14) => PHY ADDR0
93          *      ERX1 (PA15) => PHY ADDR1
94          *      ERX2 (PA25) => PHY ADDR2
95          *      ERX3 (PA26) => PHY ADDR3
96          *      ECRS (PA28) => PHY ADDR4  => PHYADDR = 0x0
97          *
98          * PHY has internal pull-down
99          */
100         writel(pin_to_mask(AT91_PIN_PA14) |
101                pin_to_mask(AT91_PIN_PA15) |
102                pin_to_mask(AT91_PIN_PA17) |
103                pin_to_mask(AT91_PIN_PA25) |
104                pin_to_mask(AT91_PIN_PA26) |
105                pin_to_mask(AT91_PIN_PA28),
106                pin_to_controller(AT91_PIN_PA0) + PIO_PUDR);
107
108         rstc = at91_sys_read(AT91_RSTC_MR) & AT91_RSTC_ERSTL;
109
110         /* Need to reset PHY -> 500ms reset */
111         at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
112                                      AT91_RSTC_ERSTL | (0x0D << 8) |
113                                      AT91_RSTC_URSTEN);
114
115         at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_EXTRST);
116
117         /* Wait for end hardware reset */
118         while (!(at91_sys_read(AT91_RSTC_SR) & AT91_RSTC_NRSTL));
119
120         /* Restore NRST value */
121         at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
122                                      (rstc) |
123                                      AT91_RSTC_URSTEN);
124
125         /* Re-enable pull-up */
126         writel(pin_to_mask(AT91_PIN_PA14) |
127                pin_to_mask(AT91_PIN_PA15) |
128                pin_to_mask(AT91_PIN_PA17) |
129                pin_to_mask(AT91_PIN_PA25) |
130                pin_to_mask(AT91_PIN_PA26) |
131                pin_to_mask(AT91_PIN_PA28),
132                pin_to_controller(AT91_PIN_PA0) + PIO_PUER);
133
134         at91_macb_hw_init();
135 }
136 #endif
137
138 int board_init(void)
139 {
140         /* Enable Ctrlc */
141         console_init_f();
142
143         /* arch number of AT91SAM9260EK-Board */
144         gd->bd->bi_arch_number = MACH_TYPE_AFEB9260;
145         /* adress of boot parameters */
146         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
147
148         at91_serial_hw_init();
149 #ifdef CONFIG_CMD_NAND
150         afeb9260_nand_hw_init();
151 #endif
152         at91_spi0_hw_init((1 << 0) | (1 << 1));
153 #ifdef CONFIG_MACB
154         afeb9260_macb_hw_init();
155 #endif
156
157         return 0;
158 }
159
160 int dram_init(void)
161 {
162         gd->bd->bi_dram[0].start = PHYS_SDRAM;
163         gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
164         return 0;
165 }
166
167 #ifdef CONFIG_RESET_PHY_R
168 void reset_phy(void)
169 {
170 }
171 #endif
172
173 int board_eth_init(bd_t *bis)
174 {
175         int rc = 0;
176 #ifdef CONFIG_MACB
177         rc = macb_eth_initialize(0, (void *)AT91SAM9260_BASE_EMAC, 0x01);
178 #endif
179         return rc;
180 }