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 } 196