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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / b8d41dda223133691b40726b9c7fd3d55a9e6e42 / . / board / bluewater / snapper9260 / snapper9260.c
blob: 60c55e9be84d56c14699efde8b7e24b5bf82bbcd [file] [log] [blame]
Ryan Mallonb8d41dd2011-06-05 07:21:22 +0000[diff] [blame^]1/*
2 * Bluewater Systems Snapper 9260/9G20 modules
3 *
4 * (C) Copyright 2011 Bluewater Systems
5 * Author: Andre Renaud <andre@bluewatersys.com>
6 * Author: Ryan Mallon <ryan@bluewatersys.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#include <common.h>
25#include <asm/io.h>
26#include <asm/arch/at91sam9260_matrix.h>
27#include <asm/arch/at91sam9_smc.h>
28#include <asm/arch/at91_common.h>
29#include <asm/arch/at91_pmc.h>
30#include <asm/arch/at91_rstc.h>
31#include <asm/arch/gpio.h>
32#include <net.h>
33#include <netdev.h>
34#include <i2c.h>
35#include <pca953x.h>
36
37DECLARE_GLOBAL_DATA_PTR;
38
39/* IO Expander pins */
40#define IO_EXP_ETH_RESET (0 << 1)
41#define IO_EXP_ETH_POWER (1 << 1)
42
43static void macb_hw_init(void)
44{
45 struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
46 struct at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA;
47 struct at91_rstc *rstc = (struct at91_rstc *)ATMEL_BASE_RSTC;
48 unsigned long erstl;
49
50 /* Enable clock */
51 writel(1 << ATMEL_ID_EMAC0, &pmc->pcer);
52
53 /* Disable pull-ups to prevent PHY going into test mode */
54 writel(pin_to_mask(AT91_PIN_PA14) |
55 pin_to_mask(AT91_PIN_PA15) |
56 pin_to_mask(AT91_PIN_PA18),
57 &pioa->pudr);
58
59 /* Power down ethernet */
60 pca953x_set_dir(0x28, IO_EXP_ETH_POWER, PCA953X_DIR_OUT);
61 pca953x_set_val(0x28, IO_EXP_ETH_POWER, 1);
62
63 /* Hold ethernet in reset */
64 pca953x_set_dir(0x28, IO_EXP_ETH_RESET, PCA953X_DIR_OUT);
65 pca953x_set_val(0x28, IO_EXP_ETH_RESET, 0);
66
67 /* Enable ethernet power */
68 pca953x_set_val(0x28, IO_EXP_ETH_POWER, 0);
69
70 /* Need to reset PHY -> 500ms reset */
71 erstl = readl(&rstc->mr) & AT91_RSTC_MR_ERSTL_MASK;
72 writel(AT91_RSTC_KEY | AT91_RSTC_MR_ERSTL(13) |
73 AT91_RSTC_MR_URSTEN, &rstc->mr);
74 writel(AT91_RSTC_KEY | AT91_RSTC_CR_EXTRST, &rstc->cr);
75
76 /* Wait for end hardware reset */
77 while (!(readl(&rstc->sr) & AT91_RSTC_SR_NRSTL))
78 ;
79
80 /* Restore NRST value */
81 writel(AT91_RSTC_KEY | erstl | AT91_RSTC_MR_URSTEN, &rstc->mr);
82
83 /* Bring the ethernet out of reset */
84 pca953x_set_val(0x28, IO_EXP_ETH_RESET, 1);
85
86 /* The phy internal reset take 21ms */
87 udelay(21 * 1000);
88
89 /* Re-enable pull-up */
90 writel(pin_to_mask(AT91_PIN_PA14) |
91 pin_to_mask(AT91_PIN_PA15) |
92 pin_to_mask(AT91_PIN_PA18),
93 &pioa->puer);
94
95 at91_macb_hw_init();
96}
97
98static void nand_hw_init(void)
99{
100 struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
101 struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
102 unsigned long csa;
103
104 /* Enable CS3 as NAND/SmartMedia */
105 csa = readl(&matrix->ebicsa);
106 csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
107 writel(csa, &matrix->ebicsa);
108
109 /* Configure SMC CS3 for NAND/SmartMedia */
110 writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
111 AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
112 &smc->cs[3].setup);
113 writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(4) |
114 AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(4),
115 &smc->cs[3].pulse);
116 writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7),
117 &smc->cs[3].cycle);
118 writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
119 AT91_SMC_MODE_EXNW_DISABLE |
120 AT91_SMC_MODE_DBW_8 |
121 AT91_SMC_MODE_TDF_CYCLE(3),
122 &smc->cs[3].mode);
123
124 /* Configure RDY/BSY */
125 at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
126
127 /* Enable NandFlash */
128 at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
129}
130
131int board_init(void)
132{
133 struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
134
135 /* Enable PIO clocks */
136 writel((1 << ATMEL_ID_PIOA) |
137 (1 << ATMEL_ID_PIOB) |
138 (1 << ATMEL_ID_PIOC), &pmc->pcer);
139
140 /* The mach-type is the same for both Snapper 9260 and 9G20 */
141 gd->bd->bi_arch_number = MACH_TYPE_SNAPPER_9260;
142
143 /* Address of boot parameters */
144 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
145
146 /* Initialise peripherals */
147 at91_seriald_hw_init();
148 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
149 nand_hw_init();
150 macb_hw_init();
151
152 return 0;
153}
154
155int board_eth_init(bd_t *bis)
156{
157 return macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x1f);
158}
159
160int dram_init(void)
161{
162 gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
163 CONFIG_SYS_SDRAM_SIZE);
164 return 0;
165}
166
167void reset_phy(void)
168{
169}