Add qemu 2.4.0
[kvmfornfv.git] / qemu / roms / u-boot / board / siemens / corvus / board.c
1 /*
2  * Board functions for Siemens CORVUS (AT91SAM9G45) based board
3  * (C) Copyright 2013 Siemens AG
4  *
5  * Based on:
6  * U-Boot file: board/atmel/at91sam9m10g45ek/at91sam9m10g45ek.c
7  * (C) Copyright 2007-2008
8  * Stelian Pop <stelian@popies.net>
9  * Lead Tech Design <www.leadtechdesign.com>
10  *
11  * SPDX-License-Identifier:     GPL-2.0+
12  */
13
14
15 #include <common.h>
16 #include <asm/io.h>
17 #include <asm/arch/at91sam9g45_matrix.h>
18 #include <asm/arch/at91sam9_smc.h>
19 #include <asm/arch/at91_common.h>
20 #include <asm/arch/at91_pmc.h>
21 #include <asm/arch/at91_rstc.h>
22 #include <asm/arch/gpio.h>
23 #include <asm/arch/clk.h>
24 #include <lcd.h>
25 #include <atmel_lcdc.h>
26 #if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB)
27 #include <net.h>
28 #endif
29 #include <netdev.h>
30 #include <spi.h>
31
32 DECLARE_GLOBAL_DATA_PTR;
33
34 #ifdef CONFIG_CMD_NAND
35 static void corvus_nand_hw_init(void)
36 {
37         struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
38         struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
39         struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
40         unsigned long csa;
41
42         /* Enable CS3 */
43         csa = readl(&matrix->ebicsa);
44         csa |= AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA;
45         writel(csa, &matrix->ebicsa);
46
47         /* Configure SMC CS3 for NAND/SmartMedia */
48         writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
49                AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
50                &smc->cs[3].setup);
51         writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(3) |
52                AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(2),
53                &smc->cs[3].pulse);
54         writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(4),
55                &smc->cs[3].cycle);
56         writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
57                AT91_SMC_MODE_EXNW_DISABLE |
58 #ifdef CONFIG_SYS_NAND_DBW_16
59                AT91_SMC_MODE_DBW_16 |
60 #else /* CONFIG_SYS_NAND_DBW_8 */
61                AT91_SMC_MODE_DBW_8 |
62 #endif
63                AT91_SMC_MODE_TDF_CYCLE(3),
64                &smc->cs[3].mode);
65
66         writel(1 << ATMEL_ID_PIOC, &pmc->pcer);
67
68         /* Configure RDY/BSY */
69         at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
70
71         /* Enable NandFlash */
72         at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
73 }
74 #endif
75
76 #ifdef CONFIG_CMD_USB
77 static void taurus_usb_hw_init(void)
78 {
79         struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
80
81         writel(1 << ATMEL_ID_PIODE, &pmc->pcer);
82
83         at91_set_gpio_output(AT91_PIN_PD1, 0);
84         at91_set_gpio_output(AT91_PIN_PD3, 0);
85 }
86 #endif
87
88 #ifdef CONFIG_MACB
89 static void corvus_macb_hw_init(void)
90 {
91         struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
92
93         /* Enable clock */
94         writel(1 << ATMEL_ID_EMAC, &pmc->pcer);
95
96         /*
97          * Disable pull-up on:
98          *      RXDV (PA15) => PHY normal mode (not Test mode)
99          *      ERX0 (PA12) => PHY ADDR0
100          *      ERX1 (PA13) => PHY ADDR1 => PHYADDR = 0x0
101          *
102          * PHY has internal pull-down
103          */
104         at91_set_pio_pullup(AT91_PIO_PORTA, 15, 0);
105         at91_set_pio_pullup(AT91_PIO_PORTA, 12, 0);
106         at91_set_pio_pullup(AT91_PIO_PORTA, 13, 0);
107
108         at91_phy_reset();
109
110         /* Re-enable pull-up */
111         at91_set_pio_pullup(AT91_PIO_PORTA, 15, 1);
112         at91_set_pio_pullup(AT91_PIO_PORTA, 12, 1);
113         at91_set_pio_pullup(AT91_PIO_PORTA, 13, 1);
114
115         /* And the pins. */
116         at91_macb_hw_init();
117 }
118 #endif
119
120 int board_early_init_f(void)
121 {
122         at91_seriald_hw_init();
123         return 0;
124 }
125
126 int board_init(void)
127 {
128         /* address of boot parameters */
129         gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
130
131 #ifdef CONFIG_CMD_NAND
132         corvus_nand_hw_init();
133 #endif
134 #ifdef CONFIG_ATMEL_SPI
135         at91_spi0_hw_init(1 << 4);
136 #endif
137 #ifdef CONFIG_HAS_DATAFLASH
138         at91_spi0_hw_init(1 << 0);
139 #endif
140 #ifdef CONFIG_MACB
141         corvus_macb_hw_init();
142 #endif
143 #ifdef CONFIG_CMD_USB
144         taurus_usb_hw_init();
145 #endif
146         return 0;
147 }
148
149 int dram_init(void)
150 {
151         gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
152                                     CONFIG_SYS_SDRAM_SIZE);
153         return 0;
154 }
155
156 int board_eth_init(bd_t *bis)
157 {
158         int rc = 0;
159 #ifdef CONFIG_MACB
160         rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC, 0x00);
161 #endif
162         return rc;
163 }
164
165 /* SPI chip select control */
166 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
167 {
168         return bus == 0 && cs < 2;
169 }
170
171 void spi_cs_activate(struct spi_slave *slave)
172 {
173         switch (slave->cs) {
174         case 1:
175                         at91_set_gpio_output(AT91_PIN_PB18, 0);
176                         break;
177         case 0:
178         default:
179                         at91_set_gpio_output(AT91_PIN_PB3, 0);
180                         break;
181         }
182 }
183
184 void spi_cs_deactivate(struct spi_slave *slave)
185 {
186         switch (slave->cs) {
187         case 1:
188                         at91_set_gpio_output(AT91_PIN_PB18, 1);
189                         break;
190         case 0:
191         default:
192                         at91_set_gpio_output(AT91_PIN_PB3, 1);
193                         break;
194         }
195 }