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 #include <common.h> 15 #include <dm.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_rstc.h> 21 #include <asm/arch/atmel_serial.h> 22 #include <asm/arch/gpio.h> 23 #include <asm/gpio.h> 24 #include <asm/arch/clk.h> 25 #if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB) 26 #include <net.h> 27 #endif 28 #ifndef CONFIG_DM_ETH 29 #include <netdev.h> 30 #endif 31 #include <spi.h> 32 33 #ifdef CONFIG_USB_GADGET_ATMEL_USBA 34 #include <asm/arch/atmel_usba_udc.h> 35 #endif 36 37 DECLARE_GLOBAL_DATA_PTR; 38 39 static void corvus_request_gpio(void) 40 { 41 gpio_request(CONFIG_SYS_NAND_ENABLE_PIN, "nand ena"); 42 gpio_request(CONFIG_SYS_NAND_READY_PIN, "nand rdy"); 43 gpio_request(AT91_PIN_PD7, "d0"); 44 gpio_request(AT91_PIN_PD8, "d1"); 45 gpio_request(AT91_PIN_PA12, "d2"); 46 gpio_request(AT91_PIN_PA13, "d3"); 47 gpio_request(AT91_PIN_PA15, "d4"); 48 gpio_request(AT91_PIN_PB7, "recovery button"); 49 gpio_request(AT91_PIN_PD1, "USB0"); 50 gpio_request(AT91_PIN_PD3, "USB1"); 51 gpio_request(AT91_PIN_PB18, "SPICS1"); 52 gpio_request(AT91_PIN_PB3, "SPICS0"); 53 gpio_request(CONFIG_RED_LED, "red led"); 54 gpio_request(CONFIG_GREEN_LED, "green led"); 55 } 56 57 static void corvus_nand_hw_init(void) 58 { 59 struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC; 60 struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX; 61 unsigned long csa; 62 63 /* Enable CS3 */ 64 csa = readl(&matrix->ebicsa); 65 csa |= AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA; 66 writel(csa, &matrix->ebicsa); 67 68 /* Configure SMC CS3 for NAND/SmartMedia */ 69 writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) | 70 AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0), 71 &smc->cs[3].setup); 72 writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(4) | 73 AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(4), 74 &smc->cs[3].pulse); 75 writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7), 76 &smc->cs[3].cycle); 77 writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE | 78 AT91_SMC_MODE_EXNW_DISABLE | 79 #ifdef CONFIG_SYS_NAND_DBW_16 80 AT91_SMC_MODE_DBW_16 | 81 #else /* CONFIG_SYS_NAND_DBW_8 */ 82 AT91_SMC_MODE_DBW_8 | 83 #endif 84 AT91_SMC_MODE_TDF_CYCLE(3), 85 &smc->cs[3].mode); 86 87 at91_periph_clk_enable(ATMEL_ID_PIOC); 88 at91_periph_clk_enable(ATMEL_ID_PIOA); 89 90 /* Enable NandFlash */ 91 at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1); 92 at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1); 93 } 94 95 #if defined(CONFIG_SPL_BUILD) 96 #include <spl.h> 97 #include <nand.h> 98 99 void spl_board_init(void) 100 { 101 corvus_request_gpio(); 102 /* 103 * For on the sam9m10g45ek board, the chip wm9711 stay in the test 104 * mode, so it need do some action to exit mode. 105 */ 106 at91_set_gpio_output(AT91_PIN_PD7, 0); 107 at91_set_gpio_output(AT91_PIN_PD8, 0); 108 at91_set_pio_pullup(AT91_PIO_PORTD, 7, 1); 109 at91_set_pio_pullup(AT91_PIO_PORTD, 8, 1); 110 at91_set_pio_pullup(AT91_PIO_PORTA, 12, 1); 111 at91_set_pio_pullup(AT91_PIO_PORTA, 13, 1); 112 at91_set_pio_pullup(AT91_PIO_PORTA, 15, 1); 113 114 corvus_nand_hw_init(); 115 116 /* Configure recovery button PINs */ 117 at91_set_gpio_input(AT91_PIN_PB7, 1); 118 119 /* check if button is pressed */ 120 if (at91_get_gpio_value(AT91_PIN_PB7) == 0) { 121 u32 boot_device; 122 123 debug("Recovery button pressed\n"); 124 boot_device = spl_boot_device(); 125 switch (boot_device) { 126 #ifdef CONFIG_SPL_NAND_SUPPORT 127 case BOOT_DEVICE_NAND: 128 nand_init(); 129 spl_nand_erase_one(0, 0); 130 break; 131 #endif 132 } 133 } 134 } 135 136 #include <asm/arch/atmel_mpddrc.h> 137 static void ddr2_conf(struct atmel_mpddrc_config *ddr2) 138 { 139 ddr2->md = (ATMEL_MPDDRC_MD_DBW_16_BITS | ATMEL_MPDDRC_MD_DDR2_SDRAM); 140 141 ddr2->cr = (ATMEL_MPDDRC_CR_NC_COL_10 | 142 ATMEL_MPDDRC_CR_NR_ROW_14 | 143 ATMEL_MPDDRC_CR_DIC_DS | 144 ATMEL_MPDDRC_CR_DQMS_SHARED | 145 ATMEL_MPDDRC_CR_CAS_DDR_CAS3); 146 ddr2->rtr = 0x24b; 147 148 ddr2->tpr0 = (6 << ATMEL_MPDDRC_TPR0_TRAS_OFFSET |/* 6*7.5 = 45 ns */ 149 2 << ATMEL_MPDDRC_TPR0_TRCD_OFFSET |/* 2*7.5 = 15 ns */ 150 2 << ATMEL_MPDDRC_TPR0_TWR_OFFSET | /* 2*7.5 = 15 ns */ 151 8 << ATMEL_MPDDRC_TPR0_TRC_OFFSET | /* 8*7.5 = 75 ns */ 152 2 << ATMEL_MPDDRC_TPR0_TRP_OFFSET | /* 2*7.5 = 15 ns */ 153 1 << ATMEL_MPDDRC_TPR0_TRRD_OFFSET | /* 1*7.5= 7.5 ns*/ 154 1 << ATMEL_MPDDRC_TPR0_TWTR_OFFSET | /* 1 clk cycle */ 155 2 << ATMEL_MPDDRC_TPR0_TMRD_OFFSET); /* 2 clk cycles */ 156 157 ddr2->tpr1 = (2 << ATMEL_MPDDRC_TPR1_TXP_OFFSET | /* 2*7.5 = 15 ns */ 158 200 << ATMEL_MPDDRC_TPR1_TXSRD_OFFSET | 159 16 << ATMEL_MPDDRC_TPR1_TXSNR_OFFSET | 160 14 << ATMEL_MPDDRC_TPR1_TRFC_OFFSET); 161 162 ddr2->tpr2 = (1 << ATMEL_MPDDRC_TPR2_TRTP_OFFSET | 163 0 << ATMEL_MPDDRC_TPR2_TRPA_OFFSET | 164 7 << ATMEL_MPDDRC_TPR2_TXARDS_OFFSET | 165 2 << ATMEL_MPDDRC_TPR2_TXARD_OFFSET); 166 } 167 168 void mem_init(void) 169 { 170 struct atmel_mpddrc_config ddr2; 171 172 ddr2_conf(&ddr2); 173 174 at91_system_clk_enable(AT91_PMC_DDR); 175 176 /* DDRAM2 Controller initialize */ 177 ddr2_init(ATMEL_BASE_DDRSDRC0, ATMEL_BASE_CS6, &ddr2); 178 } 179 #endif 180 181 #ifdef CONFIG_CMD_USB 182 static void taurus_usb_hw_init(void) 183 { 184 at91_periph_clk_enable(ATMEL_ID_PIODE); 185 186 at91_set_gpio_output(AT91_PIN_PD1, 0); 187 at91_set_gpio_output(AT91_PIN_PD3, 0); 188 } 189 #endif 190 191 #ifdef CONFIG_MACB 192 static void corvus_macb_hw_init(void) 193 { 194 /* Enable clock */ 195 at91_periph_clk_enable(ATMEL_ID_EMAC); 196 197 /* 198 * Disable pull-up on: 199 * RXDV (PA15) => PHY normal mode (not Test mode) 200 * ERX0 (PA12) => PHY ADDR0 201 * ERX1 (PA13) => PHY ADDR1 => PHYADDR = 0x0 202 * 203 * PHY has internal pull-down 204 */ 205 at91_set_pio_pullup(AT91_PIO_PORTA, 15, 0); 206 at91_set_pio_pullup(AT91_PIO_PORTA, 12, 0); 207 at91_set_pio_pullup(AT91_PIO_PORTA, 13, 0); 208 209 at91_phy_reset(); 210 211 /* Re-enable pull-up */ 212 at91_set_pio_pullup(AT91_PIO_PORTA, 15, 1); 213 at91_set_pio_pullup(AT91_PIO_PORTA, 12, 1); 214 at91_set_pio_pullup(AT91_PIO_PORTA, 13, 1); 215 216 /* And the pins. */ 217 at91_macb_hw_init(); 218 } 219 #endif 220 221 int board_early_init_f(void) 222 { 223 at91_seriald_hw_init(); 224 corvus_request_gpio(); 225 return 0; 226 } 227 228 #ifdef CONFIG_USB_GADGET_ATMEL_USBA 229 /* from ./arch/arm/mach-at91/armv7/sama5d3_devices.c */ 230 void at91_udp_hw_init(void) 231 { 232 /* Enable UPLL clock */ 233 at91_upll_clk_enable(); 234 235 /* Enable UDPHS clock */ 236 at91_periph_clk_enable(ATMEL_ID_UDPHS); 237 } 238 #endif 239 240 int board_init(void) 241 { 242 /* address of boot parameters */ 243 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; 244 245 /* we have to request the gpios again after relocation */ 246 corvus_request_gpio(); 247 #ifdef CONFIG_CMD_NAND 248 corvus_nand_hw_init(); 249 #endif 250 #ifdef CONFIG_ATMEL_SPI 251 at91_spi0_hw_init(1 << 4); 252 #endif 253 #ifdef CONFIG_MACB 254 corvus_macb_hw_init(); 255 #endif 256 #ifdef CONFIG_CMD_USB 257 taurus_usb_hw_init(); 258 #endif 259 #ifdef CONFIG_USB_GADGET_ATMEL_USBA 260 at91_udp_hw_init(); 261 usba_udc_probe(&pdata); 262 #endif 263 return 0; 264 } 265 266 int dram_init(void) 267 { 268 gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE, 269 CONFIG_SYS_SDRAM_SIZE); 270 return 0; 271 } 272 273 #ifndef CONFIG_DM_ETH 274 int board_eth_init(bd_t *bis) 275 { 276 int rc = 0; 277 #ifdef CONFIG_MACB 278 rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC, 0x00); 279 #endif 280 return rc; 281 } 282 #endif 283 284 /* SPI chip select control */ 285 int spi_cs_is_valid(unsigned int bus, unsigned int cs) 286 { 287 return bus == 0 && cs < 2; 288 } 289 290 void spi_cs_activate(struct spi_slave *slave) 291 { 292 switch (slave->cs) { 293 case 1: 294 at91_set_gpio_output(AT91_PIN_PB18, 0); 295 break; 296 case 0: 297 default: 298 at91_set_gpio_output(AT91_PIN_PB3, 0); 299 break; 300 } 301 } 302 303 void spi_cs_deactivate(struct spi_slave *slave) 304 { 305 switch (slave->cs) { 306 case 1: 307 at91_set_gpio_output(AT91_PIN_PB18, 1); 308 break; 309 case 0: 310 default: 311 at91_set_gpio_output(AT91_PIN_PB3, 1); 312 break; 313 } 314 } 315 316 static struct atmel_serial_platdata at91sam9260_serial_plat = { 317 .base_addr = ATMEL_BASE_DBGU, 318 }; 319 320 U_BOOT_DEVICE(at91sam9260_serial) = { 321 .name = "serial_atmel", 322 .platdata = &at91sam9260_serial_plat, 323 }; 324