1 /* 2 * board.c 3 * 4 * Board functions for TI AM335X based boards 5 * 6 * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/ 7 * 8 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 11 #include <common.h> 12 #include <errno.h> 13 #include <libfdt.h> 14 #include <spl.h> 15 #include <asm/arch/cpu.h> 16 #include <asm/arch/hardware.h> 17 #include <asm/arch/omap.h> 18 #include <asm/arch/ddr_defs.h> 19 #include <asm/arch/clock.h> 20 #include <asm/arch/gpio.h> 21 #include <asm/arch/mmc_host_def.h> 22 #include <asm/arch/sys_proto.h> 23 #include <asm/arch/mem.h> 24 #include <asm/arch/mux.h> 25 #include <asm/io.h> 26 #include <asm/emif.h> 27 #include <asm/gpio.h> 28 #include <i2c.h> 29 #include <miiphy.h> 30 #include <cpsw.h> 31 #include <power/tps65217.h> 32 #include <power/tps65910.h> 33 #include <environment.h> 34 #include <watchdog.h> 35 #include "board.h" 36 37 DECLARE_GLOBAL_DATA_PTR; 38 39 /* GPIO that controls power to DDR on EVM-SK */ 40 #define GPIO_DDR_VTT_EN 7 41 #define DIP_S1 44 42 43 static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE; 44 45 static int baltos_set_console(void) 46 { 47 int val, i, dips = 0; 48 char buf[7]; 49 50 for (i = 0; i < 4; i++) { 51 sprintf(buf, "dip_s%d", i + 1); 52 53 if (gpio_request(DIP_S1 + i, buf)) { 54 printf("failed to export GPIO %d\n", DIP_S1 + i); 55 return 0; 56 } 57 58 if (gpio_direction_input(DIP_S1 + i)) { 59 printf("failed to set GPIO %d direction\n", DIP_S1 + i); 60 return 0; 61 } 62 63 val = gpio_get_value(DIP_S1 + i); 64 dips |= val << i; 65 } 66 67 printf("DIPs: 0x%1x\n", (~dips) & 0xf); 68 69 if ((dips & 0xf) == 0xe) 70 setenv("console", "ttyUSB0,115200n8"); 71 72 return 0; 73 } 74 75 static int read_eeprom(BSP_VS_HWPARAM *header) 76 { 77 i2c_set_bus_num(1); 78 79 /* Check if baseboard eeprom is available */ 80 if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) { 81 puts("Could not probe the EEPROM; something fundamentally " 82 "wrong on the I2C bus.\n"); 83 return -ENODEV; 84 } 85 86 /* read the eeprom using i2c */ 87 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 1, (uchar *)header, 88 sizeof(BSP_VS_HWPARAM))) { 89 puts("Could not read the EEPROM; something fundamentally" 90 " wrong on the I2C bus.\n"); 91 return -EIO; 92 } 93 94 if (header->Magic != 0xDEADBEEF) { 95 96 printf("Incorrect magic number (0x%x) in EEPROM\n", 97 header->Magic); 98 99 /* fill default values */ 100 header->SystemId = 211; 101 header->MAC1[0] = 0x00; 102 header->MAC1[1] = 0x00; 103 header->MAC1[2] = 0x00; 104 header->MAC1[3] = 0x00; 105 header->MAC1[4] = 0x00; 106 header->MAC1[5] = 0x01; 107 108 header->MAC2[0] = 0x00; 109 header->MAC2[1] = 0x00; 110 header->MAC2[2] = 0x00; 111 header->MAC2[3] = 0x00; 112 header->MAC2[4] = 0x00; 113 header->MAC2[5] = 0x02; 114 115 header->MAC3[0] = 0x00; 116 header->MAC3[1] = 0x00; 117 header->MAC3[2] = 0x00; 118 header->MAC3[3] = 0x00; 119 header->MAC3[4] = 0x00; 120 header->MAC3[5] = 0x03; 121 } 122 123 return 0; 124 } 125 126 #if defined(CONFIG_SPL_BUILD) || defined(CONFIG_NOR_BOOT) 127 128 static const struct ddr_data ddr3_baltos_data = { 129 .datardsratio0 = MT41K256M16HA125E_RD_DQS, 130 .datawdsratio0 = MT41K256M16HA125E_WR_DQS, 131 .datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE, 132 .datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA, 133 }; 134 135 static const struct cmd_control ddr3_baltos_cmd_ctrl_data = { 136 .cmd0csratio = MT41K256M16HA125E_RATIO, 137 .cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT, 138 139 .cmd1csratio = MT41K256M16HA125E_RATIO, 140 .cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT, 141 142 .cmd2csratio = MT41K256M16HA125E_RATIO, 143 .cmd2iclkout = MT41K256M16HA125E_INVERT_CLKOUT, 144 }; 145 146 static struct emif_regs ddr3_baltos_emif_reg_data = { 147 .sdram_config = MT41K256M16HA125E_EMIF_SDCFG, 148 .ref_ctrl = MT41K256M16HA125E_EMIF_SDREF, 149 .sdram_tim1 = MT41K256M16HA125E_EMIF_TIM1, 150 .sdram_tim2 = MT41K256M16HA125E_EMIF_TIM2, 151 .sdram_tim3 = MT41K256M16HA125E_EMIF_TIM3, 152 .zq_config = MT41K256M16HA125E_ZQ_CFG, 153 .emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY, 154 }; 155 156 #ifdef CONFIG_SPL_OS_BOOT 157 int spl_start_uboot(void) 158 { 159 /* break into full u-boot on 'c' */ 160 return (serial_tstc() && serial_getc() == 'c'); 161 } 162 #endif 163 164 #define OSC (V_OSCK/1000000) 165 const struct dpll_params dpll_ddr = { 166 266, OSC-1, 1, -1, -1, -1, -1}; 167 const struct dpll_params dpll_ddr_evm_sk = { 168 303, OSC-1, 1, -1, -1, -1, -1}; 169 const struct dpll_params dpll_ddr_baltos = { 170 400, OSC-1, 1, -1, -1, -1, -1}; 171 172 void am33xx_spl_board_init(void) 173 { 174 int mpu_vdd; 175 int sil_rev; 176 177 /* Get the frequency */ 178 dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev); 179 180 /* 181 * The GP EVM, IDK and EVM SK use a TPS65910 PMIC. For all 182 * MPU frequencies we support we use a CORE voltage of 183 * 1.1375V. For MPU voltage we need to switch based on 184 * the frequency we are running at. 185 */ 186 i2c_set_bus_num(1); 187 188 printf("I2C speed: %d Hz\n", CONFIG_SYS_OMAP24_I2C_SPEED); 189 190 if (i2c_probe(TPS65910_CTRL_I2C_ADDR)) { 191 puts("i2c: cannot access TPS65910\n"); 192 return; 193 } 194 195 /* 196 * Depending on MPU clock and PG we will need a different 197 * VDD to drive at that speed. 198 */ 199 sil_rev = readl(&cdev->deviceid) >> 28; 200 mpu_vdd = am335x_get_tps65910_mpu_vdd(sil_rev, 201 dpll_mpu_opp100.m); 202 203 /* Tell the TPS65910 to use i2c */ 204 tps65910_set_i2c_control(); 205 206 /* First update MPU voltage. */ 207 if (tps65910_voltage_update(MPU, mpu_vdd)) 208 return; 209 210 /* Second, update the CORE voltage. */ 211 if (tps65910_voltage_update(CORE, TPS65910_OP_REG_SEL_1_1_3)) 212 return; 213 214 /* Set CORE Frequencies to OPP100 */ 215 do_setup_dpll(&dpll_core_regs, &dpll_core_opp100); 216 217 /* Set MPU Frequency to what we detected now that voltages are set */ 218 do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100); 219 220 writel(0x000010ff, PRM_DEVICE_INST + 4); 221 } 222 223 const struct dpll_params *get_dpll_ddr_params(void) 224 { 225 enable_i2c1_pin_mux(); 226 i2c_set_bus_num(1); 227 228 return &dpll_ddr_baltos; 229 } 230 231 void set_uart_mux_conf(void) 232 { 233 enable_uart0_pin_mux(); 234 } 235 236 void set_mux_conf_regs(void) 237 { 238 enable_board_pin_mux(); 239 } 240 241 const struct ctrl_ioregs ioregs_baltos = { 242 .cm0ioctl = MT41K256M16HA125E_IOCTRL_VALUE, 243 .cm1ioctl = MT41K256M16HA125E_IOCTRL_VALUE, 244 .cm2ioctl = MT41K256M16HA125E_IOCTRL_VALUE, 245 .dt0ioctl = MT41K256M16HA125E_IOCTRL_VALUE, 246 .dt1ioctl = MT41K256M16HA125E_IOCTRL_VALUE, 247 }; 248 249 void sdram_init(void) 250 { 251 gpio_request(GPIO_DDR_VTT_EN, "ddr_vtt_en"); 252 gpio_direction_output(GPIO_DDR_VTT_EN, 1); 253 254 config_ddr(400, &ioregs_baltos, 255 &ddr3_baltos_data, 256 &ddr3_baltos_cmd_ctrl_data, 257 &ddr3_baltos_emif_reg_data, 0); 258 } 259 #endif 260 261 /* 262 * Basic board specific setup. Pinmux has been handled already. 263 */ 264 int board_init(void) 265 { 266 #if defined(CONFIG_HW_WATCHDOG) 267 hw_watchdog_init(); 268 #endif 269 270 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; 271 #if defined(CONFIG_NOR) || defined(CONFIG_NAND) 272 gpmc_init(); 273 #endif 274 return 0; 275 } 276 277 int ft_board_setup(void *blob, bd_t *bd) 278 { 279 int node, ret; 280 unsigned char mac_addr[6]; 281 BSP_VS_HWPARAM header; 282 283 /* get production data */ 284 if (read_eeprom(&header)) 285 return 0; 286 287 /* setup MAC1 */ 288 mac_addr[0] = header.MAC1[0]; 289 mac_addr[1] = header.MAC1[1]; 290 mac_addr[2] = header.MAC1[2]; 291 mac_addr[3] = header.MAC1[3]; 292 mac_addr[4] = header.MAC1[4]; 293 mac_addr[5] = header.MAC1[5]; 294 295 296 node = fdt_path_offset(blob, "/ocp/ethernet/slave@4a100200"); 297 if (node < 0) { 298 printf("no /soc/fman/ethernet path offset\n"); 299 return -ENODEV; 300 } 301 302 ret = fdt_setprop(blob, node, "mac-address", &mac_addr, 6); 303 if (ret) { 304 printf("error setting local-mac-address property\n"); 305 return -ENODEV; 306 } 307 308 /* setup MAC2 */ 309 mac_addr[0] = header.MAC2[0]; 310 mac_addr[1] = header.MAC2[1]; 311 mac_addr[2] = header.MAC2[2]; 312 mac_addr[3] = header.MAC2[3]; 313 mac_addr[4] = header.MAC2[4]; 314 mac_addr[5] = header.MAC2[5]; 315 316 node = fdt_path_offset(blob, "/ocp/ethernet/slave@4a100300"); 317 if (node < 0) { 318 printf("no /soc/fman/ethernet path offset\n"); 319 return -ENODEV; 320 } 321 322 ret = fdt_setprop(blob, node, "mac-address", &mac_addr, 6); 323 if (ret) { 324 printf("error setting local-mac-address property\n"); 325 return -ENODEV; 326 } 327 328 printf("\nFDT was successfully setup\n"); 329 330 return 0; 331 } 332 333 static struct module_pin_mux dip_pin_mux[] = { 334 {OFFSET(gpmc_ad12), (MODE(7) | RXACTIVE )}, /* GPIO1_12 */ 335 {OFFSET(gpmc_ad13), (MODE(7) | RXACTIVE )}, /* GPIO1_13 */ 336 {OFFSET(gpmc_ad14), (MODE(7) | RXACTIVE )}, /* GPIO1_14 */ 337 {OFFSET(gpmc_ad15), (MODE(7) | RXACTIVE )}, /* GPIO1_15 */ 338 {-1}, 339 }; 340 341 #ifdef CONFIG_BOARD_LATE_INIT 342 int board_late_init(void) 343 { 344 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG 345 BSP_VS_HWPARAM header; 346 char model[4]; 347 348 /* get production data */ 349 if (read_eeprom(&header)) { 350 strcpy(model, "211"); 351 } else { 352 sprintf(model, "%d", header.SystemId); 353 if (header.SystemId == 215) { 354 configure_module_pin_mux(dip_pin_mux); 355 baltos_set_console(); 356 } 357 } 358 setenv("board_name", model); 359 #endif 360 361 return 0; 362 } 363 #endif 364 365 #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \ 366 (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD)) 367 static void cpsw_control(int enabled) 368 { 369 /* VTP can be added here */ 370 371 return; 372 } 373 374 static struct cpsw_slave_data cpsw_slaves[] = { 375 { 376 .slave_reg_ofs = 0x208, 377 .sliver_reg_ofs = 0xd80, 378 .phy_addr = 0, 379 }, 380 { 381 .slave_reg_ofs = 0x308, 382 .sliver_reg_ofs = 0xdc0, 383 .phy_addr = 7, 384 }, 385 }; 386 387 static struct cpsw_platform_data cpsw_data = { 388 .mdio_base = CPSW_MDIO_BASE, 389 .cpsw_base = CPSW_BASE, 390 .mdio_div = 0xff, 391 .channels = 8, 392 .cpdma_reg_ofs = 0x800, 393 .slaves = 2, 394 .slave_data = cpsw_slaves, 395 .active_slave = 1, 396 .ale_reg_ofs = 0xd00, 397 .ale_entries = 1024, 398 .host_port_reg_ofs = 0x108, 399 .hw_stats_reg_ofs = 0x900, 400 .bd_ram_ofs = 0x2000, 401 .mac_control = (1 << 5), 402 .control = cpsw_control, 403 .host_port_num = 0, 404 .version = CPSW_CTRL_VERSION_2, 405 }; 406 #endif 407 408 #if ((defined(CONFIG_SPL_ETH_SUPPORT) || defined(CONFIG_SPL_USBETH_SUPPORT)) \ 409 && defined(CONFIG_SPL_BUILD)) || \ 410 ((defined(CONFIG_DRIVER_TI_CPSW) || \ 411 defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET)) && \ 412 !defined(CONFIG_SPL_BUILD)) 413 int board_eth_init(bd_t *bis) 414 { 415 int rv, n = 0; 416 uint8_t mac_addr[6]; 417 uint32_t mac_hi, mac_lo; 418 __maybe_unused struct am335x_baseboard_id header; 419 420 /* 421 * Note here that we're using CPSW1 since that has a 1Gbit PHY while 422 * CSPW0 has a 100Mbit PHY. 423 * 424 * On product, CPSW1 maps to port labeled WAN. 425 */ 426 427 /* try reading mac address from efuse */ 428 mac_lo = readl(&cdev->macid1l); 429 mac_hi = readl(&cdev->macid1h); 430 mac_addr[0] = mac_hi & 0xFF; 431 mac_addr[1] = (mac_hi & 0xFF00) >> 8; 432 mac_addr[2] = (mac_hi & 0xFF0000) >> 16; 433 mac_addr[3] = (mac_hi & 0xFF000000) >> 24; 434 mac_addr[4] = mac_lo & 0xFF; 435 mac_addr[5] = (mac_lo & 0xFF00) >> 8; 436 437 #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \ 438 (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD)) 439 if (!getenv("ethaddr")) { 440 printf("<ethaddr> not set. Validating first E-fuse MAC\n"); 441 442 if (is_valid_ethaddr(mac_addr)) 443 eth_setenv_enetaddr("ethaddr", mac_addr); 444 } 445 446 #ifdef CONFIG_DRIVER_TI_CPSW 447 writel((GMII1_SEL_RMII | GMII2_SEL_RGMII | RGMII2_IDMODE), &cdev->miisel); 448 cpsw_slaves[1].phy_if = PHY_INTERFACE_MODE_RGMII; 449 rv = cpsw_register(&cpsw_data); 450 if (rv < 0) 451 printf("Error %d registering CPSW switch\n", rv); 452 else 453 n += rv; 454 #endif 455 456 /* 457 * 458 * CPSW RGMII Internal Delay Mode is not supported in all PVT 459 * operating points. So we must set the TX clock delay feature 460 * in the AR8051 PHY. Since we only support a single ethernet 461 * device in U-Boot, we only do this for the first instance. 462 */ 463 #define AR8051_PHY_DEBUG_ADDR_REG 0x1d 464 #define AR8051_PHY_DEBUG_DATA_REG 0x1e 465 #define AR8051_DEBUG_RGMII_CLK_DLY_REG 0x5 466 #define AR8051_RGMII_TX_CLK_DLY 0x100 467 const char *devname; 468 devname = miiphy_get_current_dev(); 469 470 miiphy_write(devname, 0x7, AR8051_PHY_DEBUG_ADDR_REG, 471 AR8051_DEBUG_RGMII_CLK_DLY_REG); 472 miiphy_write(devname, 0x7, AR8051_PHY_DEBUG_DATA_REG, 473 AR8051_RGMII_TX_CLK_DLY); 474 #endif 475 return n; 476 } 477 #endif 478