summaryrefslogtreecommitdiff
path: root/board/bluewater/snapper9260/snapper9260.c
blob: 12fb87441e0a499a2faa3ceae933630566b663ad (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
// SPDX-License-Identifier: GPL-2.0+
/*
 * Bluewater Systems Snapper 9260/9G20 modules
 *
 * (C) Copyright 2011 Bluewater Systems
 *   Author: Andre Renaud <andre@bluewatersys.com>
 *   Author: Ryan Mallon <ryan@bluewatersys.com>
 */

#include <common.h>
#include <dm.h>
#include <init.h>
#include <asm/io.h>
#include <asm/gpio.h>
#include <asm/mach-types.h>
#include <asm/arch/at91sam9260_matrix.h>
#include <asm/arch/at91sam9_smc.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/clk.h>
#include <asm/arch/gpio.h>
#include <asm/arch/atmel_serial.h>
#include <net.h>
#include <netdev.h>
#include <i2c.h>
#include <pca953x.h>
#include <linux/delay.h>

DECLARE_GLOBAL_DATA_PTR;

/* IO Expander pins */
#define IO_EXP_ETH_RESET	(0 << 1)
#define IO_EXP_ETH_POWER	(1 << 1)

static void macb_hw_init(void)
{
	struct at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA;

	at91_periph_clk_enable(ATMEL_ID_EMAC0);

	/* Disable pull-ups to prevent PHY going into test mode */
	writel(pin_to_mask(AT91_PIN_PA14) |
	       pin_to_mask(AT91_PIN_PA15) |
	       pin_to_mask(AT91_PIN_PA18),
	       &pioa->pudr);

	/* Power down ethernet */
	pca953x_set_dir(0x28, IO_EXP_ETH_POWER, PCA953X_DIR_OUT);
	pca953x_set_val(0x28, IO_EXP_ETH_POWER, 1);

	/* Hold ethernet in reset */
	pca953x_set_dir(0x28, IO_EXP_ETH_RESET, PCA953X_DIR_OUT);
	pca953x_set_val(0x28, IO_EXP_ETH_RESET, 0);

	/* Enable ethernet power */
	pca953x_set_val(0x28, IO_EXP_ETH_POWER, 0);

	at91_phy_reset();

	/* Bring the ethernet out of reset */
	pca953x_set_val(0x28, IO_EXP_ETH_RESET, 1);

	/* The phy internal reset take 21ms */
	udelay(21 * 1000);

	/* Re-enable pull-up */
	writel(pin_to_mask(AT91_PIN_PA14) |
	       pin_to_mask(AT91_PIN_PA15) |
	       pin_to_mask(AT91_PIN_PA18),
	       &pioa->puer);

	at91_macb_hw_init();
}

static void nand_hw_init(void)
{
	struct at91_smc *smc       = (struct at91_smc    *)ATMEL_BASE_SMC;
	struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
	unsigned long csa;

	/* Enable CS3 as NAND/SmartMedia */
	csa = readl(&matrix->ebicsa);
	csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
	writel(csa, &matrix->ebicsa);

	/* Configure SMC CS3 for NAND/SmartMedia */
	writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
	       AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
	       &smc->cs[3].setup);
	writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(4) |
	       AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(4),
	       &smc->cs[3].pulse);
	writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7),
	       &smc->cs[3].cycle);
	writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
	       AT91_SMC_MODE_EXNW_DISABLE |
	       AT91_SMC_MODE_DBW_8 |
	       AT91_SMC_MODE_TDF_CYCLE(3),
	       &smc->cs[3].mode);

	/* Configure RDY/BSY */
	gpio_request(CONFIG_SYS_NAND_READY_PIN, "nand_rdy");
	gpio_direction_input(CONFIG_SYS_NAND_READY_PIN);

	/* Enable NandFlash */
	gpio_request(CONFIG_SYS_NAND_ENABLE_PIN, "nand_ce");
	gpio_direction_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
}

int board_init(void)
{
	at91_periph_clk_enable(ATMEL_ID_PIOA);
	at91_periph_clk_enable(ATMEL_ID_PIOB);
	at91_periph_clk_enable(ATMEL_ID_PIOC);

	/* The mach-type is the same for both Snapper 9260 and 9G20 */
	gd->bd->bi_arch_number = MACH_TYPE_SNAPPER_9260;

	/* Address of boot parameters */
	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;

	/* Initialise peripherals */
	at91_seriald_hw_init();
	i2c_set_bus_num(0);
	nand_hw_init();
	macb_hw_init();

	return 0;
}

int board_eth_init(struct bd_info *bis)
{
	return macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x1f);
}

int dram_init(void)
{
	gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
				    CONFIG_SYS_SDRAM_SIZE);
	return 0;
}

void reset_phy(void)
{
}

static struct atmel_serial_platdata at91sam9260_serial_plat = {
	.base_addr = ATMEL_BASE_DBGU,
};

U_BOOT_DEVICE(at91sam9260_serial) = {
	.name	= "serial_atmel",
	.plat = &at91sam9260_serial_plat,
};