1 /* 2 * Board functions for TI AM335X based draco board 3 * (C) Copyright 2013 Siemens Schweiz AG 4 * (C) Heiko Schocher, DENX Software Engineering, hs@denx.de. 5 * 6 * Based on: 7 * 8 * Board functions for TI AM335X based boards 9 * u-boot:/board/ti/am335x/board.c 10 * 11 * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/ 12 * 13 * SPDX-License-Identifier: GPL-2.0+ 14 */ 15 16 #include <common.h> 17 #include <errno.h> 18 #include <spl.h> 19 #include <asm/arch/cpu.h> 20 #include <asm/arch/hardware.h> 21 #include <asm/arch/omap.h> 22 #include <asm/arch/ddr_defs.h> 23 #include <asm/arch/clock.h> 24 #include <asm/arch/gpio.h> 25 #include <asm/arch/mmc_host_def.h> 26 #include <asm/arch/sys_proto.h> 27 #include <asm/io.h> 28 #include <asm/emif.h> 29 #include <asm/gpio.h> 30 #include <i2c.h> 31 #include <miiphy.h> 32 #include <cpsw.h> 33 #include <watchdog.h> 34 #include "board.h" 35 #include "../common/factoryset.h" 36 37 DECLARE_GLOBAL_DATA_PTR; 38 39 #ifdef CONFIG_SPL_BUILD 40 static struct draco_baseboard_id __attribute__((section(".data"))) settings; 41 42 #if DDR_PLL_FREQ == 303 43 /* Default@303MHz-i0 */ 44 const struct ddr3_data ddr3_default = { 45 0x33524444, 0x56312e35, 0x0080, 0x0000, 0x003A, 0x003F, 0x009F, 46 0x0079, 0x0888A39B, 0x26517FDA, 0x501F84EF, 0x00100206, 0x61A44A32, 47 0x0000093B, 0x0000014A, 48 "default name @303MHz \0", 49 "default marking \0", 50 }; 51 #elif DDR_PLL_FREQ == 400 52 /* Default@400MHz-i0 */ 53 const struct ddr3_data ddr3_default = { 54 0x33524444, 0x56312e35, 0x0080, 0x0000, 0x0039, 0x0046, 0x00ab, 55 0x0080, 0x0AAAA4DB, 0x26307FDA, 0x501F821F, 0x00100207, 0x61A45232, 56 0x00000618, 0x0000014A, 57 "default name @400MHz \0", 58 "default marking \0", 59 }; 60 #endif 61 62 static void set_default_ddr3_timings(void) 63 { 64 printf("Set default DDR3 settings\n"); 65 settings.ddr3 = ddr3_default; 66 } 67 68 static void print_ddr3_timings(void) 69 { 70 printf("\nDDR3\n"); 71 printf("clock:\t\t%d MHz\n", DDR_PLL_FREQ); 72 printf("device:\t\t%s\n", settings.ddr3.manu_name); 73 printf("marking:\t%s\n", settings.ddr3.manu_marking); 74 printf("%-20s, %-8s, %-8s, %-4s\n", "timing parameters", "eeprom", 75 "default", "diff"); 76 PRINTARGS(magic); 77 PRINTARGS(version); 78 PRINTARGS(ddr3_sratio); 79 PRINTARGS(iclkout); 80 81 PRINTARGS(dt0rdsratio0); 82 PRINTARGS(dt0wdsratio0); 83 PRINTARGS(dt0fwsratio0); 84 PRINTARGS(dt0wrsratio0); 85 86 PRINTARGS(sdram_tim1); 87 PRINTARGS(sdram_tim2); 88 PRINTARGS(sdram_tim3); 89 90 PRINTARGS(emif_ddr_phy_ctlr_1); 91 92 PRINTARGS(sdram_config); 93 PRINTARGS(ref_ctrl); 94 PRINTARGS(ioctr_val); 95 } 96 97 static void print_chip_data(void) 98 { 99 struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE; 100 dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev); 101 printf("\nCPU BOARD\n"); 102 printf("device: \t'%s'\n", settings.chip.sdevname); 103 printf("hw version: \t'%s'\n", settings.chip.shwver); 104 printf("max freq: \t%d MHz\n", dpll_mpu_opp100.m); 105 } 106 #endif /* CONFIG_SPL_BUILD */ 107 108 /* 109 * Read header information from EEPROM into global structure. 110 */ 111 static int read_eeprom(void) 112 { 113 /* Check if baseboard eeprom is available */ 114 if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) { 115 printf("Could not probe the EEPROM; something fundamentally wrong on the I2C bus.\n"); 116 return 1; 117 } 118 119 #ifdef CONFIG_SPL_BUILD 120 /* Read Siemens eeprom data (DDR3) */ 121 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_ADDR_DDR3, 2, 122 (uchar *)&settings.ddr3, sizeof(struct ddr3_data))) { 123 printf("Could not read the EEPROM; something fundamentally wrong on the I2C bus.\nUse default DDR3 timings\n"); 124 set_default_ddr3_timings(); 125 } 126 /* Read Siemens eeprom data (CHIP) */ 127 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_ADDR_CHIP, 2, 128 (uchar *)&settings.chip, sizeof(settings.chip))) 129 printf("Could not read chip settings\n"); 130 131 if (ddr3_default.magic == settings.ddr3.magic && 132 ddr3_default.version == settings.ddr3.version) { 133 printf("Using DDR3 settings from EEPROM\n"); 134 } else { 135 if (ddr3_default.magic != settings.ddr3.magic) 136 printf("Warning: No valid DDR3 data in eeprom.\n"); 137 if (ddr3_default.version != settings.ddr3.version) 138 printf("Warning: DDR3 data version does not match.\n"); 139 140 printf("Using default settings\n"); 141 set_default_ddr3_timings(); 142 } 143 144 if (MAGIC_CHIP == settings.chip.magic) 145 print_chip_data(); 146 else 147 printf("Warning: No chip data in eeprom\n"); 148 149 print_ddr3_timings(); 150 #endif 151 return 0; 152 } 153 154 #ifdef CONFIG_SPL_BUILD 155 static void board_init_ddr(void) 156 { 157 struct emif_regs draco_ddr3_emif_reg_data = { 158 .zq_config = 0x50074BE4, 159 }; 160 161 struct ddr_data draco_ddr3_data = { 162 }; 163 164 struct cmd_control draco_ddr3_cmd_ctrl_data = { 165 }; 166 167 struct ctrl_ioregs draco_ddr3_ioregs = { 168 }; 169 170 /* pass values from eeprom */ 171 draco_ddr3_emif_reg_data.sdram_tim1 = settings.ddr3.sdram_tim1; 172 draco_ddr3_emif_reg_data.sdram_tim2 = settings.ddr3.sdram_tim2; 173 draco_ddr3_emif_reg_data.sdram_tim3 = settings.ddr3.sdram_tim3; 174 draco_ddr3_emif_reg_data.emif_ddr_phy_ctlr_1 = 175 settings.ddr3.emif_ddr_phy_ctlr_1; 176 draco_ddr3_emif_reg_data.sdram_config = settings.ddr3.sdram_config; 177 draco_ddr3_emif_reg_data.ref_ctrl = settings.ddr3.ref_ctrl; 178 179 draco_ddr3_data.datardsratio0 = settings.ddr3.dt0rdsratio0; 180 draco_ddr3_data.datawdsratio0 = settings.ddr3.dt0wdsratio0; 181 draco_ddr3_data.datafwsratio0 = settings.ddr3.dt0fwsratio0; 182 draco_ddr3_data.datawrsratio0 = settings.ddr3.dt0wrsratio0; 183 184 draco_ddr3_cmd_ctrl_data.cmd0csratio = settings.ddr3.ddr3_sratio; 185 draco_ddr3_cmd_ctrl_data.cmd0iclkout = settings.ddr3.iclkout; 186 draco_ddr3_cmd_ctrl_data.cmd1csratio = settings.ddr3.ddr3_sratio; 187 draco_ddr3_cmd_ctrl_data.cmd1iclkout = settings.ddr3.iclkout; 188 draco_ddr3_cmd_ctrl_data.cmd2csratio = settings.ddr3.ddr3_sratio; 189 draco_ddr3_cmd_ctrl_data.cmd2iclkout = settings.ddr3.iclkout; 190 191 draco_ddr3_ioregs.cm0ioctl = settings.ddr3.ioctr_val, 192 draco_ddr3_ioregs.cm1ioctl = settings.ddr3.ioctr_val, 193 draco_ddr3_ioregs.cm2ioctl = settings.ddr3.ioctr_val, 194 draco_ddr3_ioregs.dt0ioctl = settings.ddr3.ioctr_val, 195 draco_ddr3_ioregs.dt1ioctl = settings.ddr3.ioctr_val, 196 197 config_ddr(DDR_PLL_FREQ, &draco_ddr3_ioregs, &draco_ddr3_data, 198 &draco_ddr3_cmd_ctrl_data, &draco_ddr3_emif_reg_data, 0); 199 200 /* For Samsung 2Gbit RAM we need this delay otherwise config fails after 201 * soft reset. 202 */ 203 udelay(2000); 204 } 205 206 static void spl_siemens_board_init(void) 207 { 208 return; 209 } 210 #endif /* if def CONFIG_SPL_BUILD */ 211 212 #ifdef CONFIG_BOARD_LATE_INIT 213 int board_late_init(void) 214 { 215 omap_nand_switch_ecc(1, 8); 216 #ifdef CONFIG_FACTORYSET 217 /* Set ASN in environment*/ 218 if (factory_dat.asn[0] != 0) { 219 setenv("dtb_name", (char *)factory_dat.asn); 220 } else { 221 /* dtb suffix gets added in load script */ 222 setenv("dtb_name", "am335x-draco"); 223 } 224 #else 225 setenv("dtb_name", "am335x-draco"); 226 #endif 227 228 return 0; 229 } 230 #endif 231 232 #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \ 233 (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD)) 234 static void cpsw_control(int enabled) 235 { 236 /* VTP can be added here */ 237 238 return; 239 } 240 241 static struct cpsw_slave_data cpsw_slaves[] = { 242 { 243 .slave_reg_ofs = 0x208, 244 .sliver_reg_ofs = 0xd80, 245 .phy_addr = 0, 246 .phy_if = PHY_INTERFACE_MODE_MII, 247 }, 248 }; 249 250 static struct cpsw_platform_data cpsw_data = { 251 .mdio_base = CPSW_MDIO_BASE, 252 .cpsw_base = CPSW_BASE, 253 .mdio_div = 0xff, 254 .channels = 4, 255 .cpdma_reg_ofs = 0x800, 256 .slaves = 1, 257 .slave_data = cpsw_slaves, 258 .ale_reg_ofs = 0xd00, 259 .ale_entries = 1024, 260 .host_port_reg_ofs = 0x108, 261 .hw_stats_reg_ofs = 0x900, 262 .bd_ram_ofs = 0x2000, 263 .mac_control = (1 << 5), 264 .control = cpsw_control, 265 .host_port_num = 0, 266 .version = CPSW_CTRL_VERSION_2, 267 }; 268 269 #if defined(CONFIG_DRIVER_TI_CPSW) || \ 270 (defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET)) 271 int board_eth_init(bd_t *bis) 272 { 273 struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE; 274 int n = 0; 275 int rv; 276 277 factoryset_setenv(); 278 279 /* Set rgmii mode and enable rmii clock to be sourced from chip */ 280 writel((RMII_MODE_ENABLE | RMII_CHIPCKL_ENABLE), &cdev->miisel); 281 282 rv = cpsw_register(&cpsw_data); 283 if (rv < 0) 284 printf("Error %d registering CPSW switch\n", rv); 285 else 286 n += rv; 287 return n; 288 } 289 290 static int do_switch_reset(cmd_tbl_t *cmdtp, int flag, int argc, 291 char *const argv[]) 292 { 293 /* Reset SMSC LAN9303 switch for default configuration */ 294 gpio_request(GPIO_LAN9303_NRST, "nRST"); 295 gpio_direction_output(GPIO_LAN9303_NRST, 0); 296 /* assert active low reset for 200us */ 297 udelay(200); 298 gpio_set_value(GPIO_LAN9303_NRST, 1); 299 300 return 0; 301 }; 302 303 U_BOOT_CMD( 304 switch_rst, CONFIG_SYS_MAXARGS, 1, do_switch_reset, 305 "Reset LAN9303 switch via its reset pin", 306 "" 307 ); 308 #endif /* #if defined(CONFIG_DRIVER_TI_CPSW) */ 309 #endif /* #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) */ 310 311 #include "../common/board.c" 312