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  * SPDX-License-Identifier:	GPL-2.0+
9  */
10 
11 #include <common.h>
12 #include <asm/io.h>
13 #include <asm/arch/at91sam9260_matrix.h>
14 #include <asm/arch/at91sam9_smc.h>
15 #include <asm/arch/at91_common.h>
16 #include <asm/arch/at91_pmc.h>
17 #include <asm/arch/gpio.h>
18 #include <net.h>
19 #include <netdev.h>
20 #include <i2c.h>
21 #include <pca953x.h>
22 
23 DECLARE_GLOBAL_DATA_PTR;
24 
25 /* IO Expander pins */
26 #define IO_EXP_ETH_RESET	(0 << 1)
27 #define IO_EXP_ETH_POWER	(1 << 1)
28 
29 static void macb_hw_init(void)
30 {
31 	struct at91_pmc *pmc   = (struct at91_pmc  *)ATMEL_BASE_PMC;
32 	struct at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA;
33 
34 	/* Enable clock */
35 	writel(1 << ATMEL_ID_EMAC0, &pmc->pcer);
36 
37 	/* Disable pull-ups to prevent PHY going into test mode */
38 	writel(pin_to_mask(AT91_PIN_PA14) |
39 	       pin_to_mask(AT91_PIN_PA15) |
40 	       pin_to_mask(AT91_PIN_PA18),
41 	       &pioa->pudr);
42 
43 	/* Power down ethernet */
44 	pca953x_set_dir(0x28, IO_EXP_ETH_POWER, PCA953X_DIR_OUT);
45 	pca953x_set_val(0x28, IO_EXP_ETH_POWER, 1);
46 
47 	/* Hold ethernet in reset */
48 	pca953x_set_dir(0x28, IO_EXP_ETH_RESET, PCA953X_DIR_OUT);
49 	pca953x_set_val(0x28, IO_EXP_ETH_RESET, 0);
50 
51 	/* Enable ethernet power */
52 	pca953x_set_val(0x28, IO_EXP_ETH_POWER, 0);
53 
54 	at91_phy_reset();
55 
56 	/* Bring the ethernet out of reset */
57 	pca953x_set_val(0x28, IO_EXP_ETH_RESET, 1);
58 
59 	/* The phy internal reset take 21ms */
60 	udelay(21 * 1000);
61 
62 	/* Re-enable pull-up */
63 	writel(pin_to_mask(AT91_PIN_PA14) |
64 	       pin_to_mask(AT91_PIN_PA15) |
65 	       pin_to_mask(AT91_PIN_PA18),
66 	       &pioa->puer);
67 
68 	at91_macb_hw_init();
69 }
70 
71 static void nand_hw_init(void)
72 {
73 	struct at91_smc *smc       = (struct at91_smc    *)ATMEL_BASE_SMC;
74 	struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
75 	unsigned long csa;
76 
77 	/* Enable CS3 as NAND/SmartMedia */
78 	csa = readl(&matrix->ebicsa);
79 	csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
80 	writel(csa, &matrix->ebicsa);
81 
82 	/* Configure SMC CS3 for NAND/SmartMedia */
83 	writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
84 	       AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
85 	       &smc->cs[3].setup);
86 	writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(4) |
87 	       AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(4),
88 	       &smc->cs[3].pulse);
89 	writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7),
90 	       &smc->cs[3].cycle);
91 	writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
92 	       AT91_SMC_MODE_EXNW_DISABLE |
93 	       AT91_SMC_MODE_DBW_8 |
94 	       AT91_SMC_MODE_TDF_CYCLE(3),
95 	       &smc->cs[3].mode);
96 
97 	/* Configure RDY/BSY */
98 	at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
99 
100 	/* Enable NandFlash */
101 	at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
102 }
103 
104 int board_init(void)
105 {
106 	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
107 
108 	/* Enable PIO clocks */
109 	writel((1 << ATMEL_ID_PIOA) |
110 	       (1 << ATMEL_ID_PIOB) |
111 	       (1 << ATMEL_ID_PIOC), &pmc->pcer);
112 
113 	/* The mach-type is the same for both Snapper 9260 and 9G20 */
114 	gd->bd->bi_arch_number = MACH_TYPE_SNAPPER_9260;
115 
116 	/* Address of boot parameters */
117 	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
118 
119 	/* Initialise peripherals */
120 	at91_seriald_hw_init();
121 	i2c_set_bus_num(0);
122 	nand_hw_init();
123 	macb_hw_init();
124 
125 	return 0;
126 }
127 
128 int board_eth_init(bd_t *bis)
129 {
130 	return macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x1f);
131 }
132 
133 int dram_init(void)
134 {
135 	gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
136 				    CONFIG_SYS_SDRAM_SIZE);
137 	return 0;
138 }
139 
140 void reset_phy(void)
141 {
142 }
143