1 /*
2  * (C) Copyright 2007-2008
3  * Stelian Pop <stelian.pop@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/at91sam9_smc.h>
29 #include <asm/arch/at91_common.h>
30 #include <asm/arch/at91_pmc.h>
31 #include <asm/arch/at91_rstc.h>
32 #include <asm/arch/gpio.h>
33 #include <asm/arch/io.h>
34 #include <asm/arch/hardware.h>
35 #if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB)
36 #include <net.h>
37 #endif
38 #include <netdev.h>
39 
40 DECLARE_GLOBAL_DATA_PTR;
41 
42 /* ------------------------------------------------------------------------- */
43 /*
44  * Miscelaneous platform dependent initialisations
45  */
46 
47 #ifdef CONFIG_CMD_NAND
48 static void at91sam9260ek_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_(1) | AT91_SMC_NCS_WRSETUP_(0) |
60 		       AT91_SMC_NRDSETUP_(1) | 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 #ifdef CONFIG_SYS_NAND_DBW_16
70 		       AT91_SMC_DBW_16 |
71 #else /* CONFIG_SYS_NAND_DBW_8 */
72 		       AT91_SMC_DBW_8 |
73 #endif
74 		       AT91_SMC_TDF_(2));
75 
76 	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOC);
77 
78 	/* Configure RDY/BSY */
79 	at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
80 
81 	/* Enable NandFlash */
82 	at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
83 }
84 #endif
85 
86 #ifdef CONFIG_MACB
87 static void at91sam9260ek_macb_hw_init(void)
88 {
89 	unsigned long rstc;
90 
91 	/* Enable clock */
92 	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_EMAC);
93 
94 	/*
95 	 * Disable pull-up on:
96 	 *	RXDV (PA17) => PHY normal mode (not Test mode)
97 	 *	ERX0 (PA14) => PHY ADDR0
98 	 *	ERX1 (PA15) => PHY ADDR1
99 	 *	ERX2 (PA25) => PHY ADDR2
100 	 *	ERX3 (PA26) => PHY ADDR3
101 	 *	ECRS (PA28) => PHY ADDR4  => PHYADDR = 0x0
102 	 *
103 	 * PHY has internal pull-down
104 	 */
105 	writel(pin_to_mask(AT91_PIN_PA14) |
106 	       pin_to_mask(AT91_PIN_PA15) |
107 	       pin_to_mask(AT91_PIN_PA17) |
108 	       pin_to_mask(AT91_PIN_PA25) |
109 	       pin_to_mask(AT91_PIN_PA26) |
110 	       pin_to_mask(AT91_PIN_PA28),
111 	       pin_to_controller(AT91_PIN_PA0) + PIO_PUDR);
112 
113 	rstc = at91_sys_read(AT91_RSTC_MR) & AT91_RSTC_ERSTL;
114 
115 	/* Need to reset PHY -> 500ms reset */
116 	at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
117 				     (AT91_RSTC_ERSTL & (0x0D << 8)) |
118 				     AT91_RSTC_URSTEN);
119 
120 	at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_EXTRST);
121 
122 	/* Wait for end hardware reset */
123 	while (!(at91_sys_read(AT91_RSTC_SR) & AT91_RSTC_NRSTL));
124 
125 	/* Restore NRST value */
126 	at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
127 				     (rstc) |
128 				     AT91_RSTC_URSTEN);
129 
130 	/* Re-enable pull-up */
131 	writel(pin_to_mask(AT91_PIN_PA14) |
132 	       pin_to_mask(AT91_PIN_PA15) |
133 	       pin_to_mask(AT91_PIN_PA17) |
134 	       pin_to_mask(AT91_PIN_PA25) |
135 	       pin_to_mask(AT91_PIN_PA26) |
136 	       pin_to_mask(AT91_PIN_PA28),
137 	       pin_to_controller(AT91_PIN_PA0) + PIO_PUER);
138 
139 	at91_macb_hw_init();
140 }
141 #endif
142 
143 int board_init(void)
144 {
145 	/* Enable Ctrlc */
146 	console_init_f();
147 
148 #ifdef CONFIG_AT91SAM9G20EK
149 	/* arch number of AT91SAM9260EK-Board */
150 	gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9G20EK;
151 #else
152 	/* arch number of AT91SAM9260EK-Board */
153 	gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9260EK;
154 #endif
155 	/* adress of boot parameters */
156 	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
157 
158 	at91_serial_hw_init();
159 #ifdef CONFIG_CMD_NAND
160 	at91sam9260ek_nand_hw_init();
161 #endif
162 #ifdef CONFIG_HAS_DATAFLASH
163 	at91_spi0_hw_init((1 << 0) || (1 << 1));
164 #endif
165 #ifdef CONFIG_MACB
166 	at91sam9260ek_macb_hw_init();
167 #endif
168 
169 	return 0;
170 }
171 
172 int dram_init(void)
173 {
174 	gd->bd->bi_dram[0].start = PHYS_SDRAM;
175 	gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
176 	return 0;
177 }
178 
179 #ifdef CONFIG_RESET_PHY_R
180 void reset_phy(void)
181 {
182 #ifdef CONFIG_MACB
183 	/*
184 	 * Initialize ethernet HW addr prior to starting Linux,
185 	 * needed for nfsroot
186 	 */
187 	eth_init(gd->bd);
188 #endif
189 }
190 #endif
191 
192 int board_eth_init(bd_t *bis)
193 {
194 	int rc = 0;
195 #ifdef CONFIG_MACB
196 	rc = macb_eth_initialize(0, (void *)AT91SAM9260_BASE_EMAC, 0x00);
197 #endif
198 	return rc;
199 }
200