board/siemens/draco/board.c

   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, 0x26247FDA, 0x501F821F, 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("timing parameters\n");
  75         printf("diff\teeprom\tdefault\n");
  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         printf("\nCPU BOARD\n");
 100         printf("device: \t'%s'\n", settings.chip.sdevname);
 101         printf("hw version: \t'%s'\n", settings.chip.shwver);
 102 }
 103 #endif /* CONFIG_SPL_BUILD */
 104
 105 /*
 106  * Read header information from EEPROM into global structure.
 107  */
 108 static int read_eeprom(void)
 109 {
 110         /* Check if baseboard eeprom is available */
 111         if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) {
 112                 printf("Could not probe the EEPROM; something fundamentally wrong on the I2C bus.\n");
 113                 return 1;
 114         }
 115
 116 #ifdef CONFIG_SPL_BUILD
 117         /* Read Siemens eeprom data (DDR3) */
 118         if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_ADDR_DDR3, 2,
 119                      (uchar *)&settings.ddr3, sizeof(struct ddr3_data))) {
 120                 printf("Could not read the EEPROM; something fundamentally wrong on the I2C bus.\nUse default DDR3 timings\n");
 121                 set_default_ddr3_timings();
 122         }
 123         /* Read Siemens eeprom data (CHIP) */
 124         if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_ADDR_CHIP, 2,
 125                      (uchar *)&settings.chip, sizeof(settings.chip)))
 126                 printf("Could not read chip settings\n");
 127
 128         if (ddr3_default.magic == settings.ddr3.magic &&
 129             ddr3_default.version == settings.ddr3.version) {
 130                 printf("Using DDR3 settings from EEPROM\n");
 131         } else {
 132                 if (ddr3_default.magic != settings.ddr3.magic)
 133                         printf("Warning: No valid DDR3 data in eeprom.\n");
 134                 if (ddr3_default.version != settings.ddr3.version)
 135                         printf("Warning: DDR3 data version does not match.\n");
 136
 137                 printf("Using default settings\n");
 138                 set_default_ddr3_timings();
 139         }
 140
 141         if (MAGIC_CHIP == settings.chip.magic)
 142                 print_chip_data();
 143         else
 144                 printf("Warning: No chip data in eeprom\n");
 145
 146         print_ddr3_timings();
 147 #endif
 148         return 0;
 149 }
 150
 151 #ifdef CONFIG_SPL_BUILD
 152 static void board_init_ddr(void)
 153 {
 154 struct emif_regs draco_ddr3_emif_reg_data = {
 155         .zq_config = 0x50074BE4,
 156 };
 157
 158 struct ddr_data draco_ddr3_data = {
 159 };
 160
 161 struct cmd_control draco_ddr3_cmd_ctrl_data = {
 162 };
 163
 164 struct ctrl_ioregs draco_ddr3_ioregs = {
 165 };
 166
 167         /* pass values from eeprom */
 168         draco_ddr3_emif_reg_data.sdram_tim1 = settings.ddr3.sdram_tim1;
 169         draco_ddr3_emif_reg_data.sdram_tim2 = settings.ddr3.sdram_tim2;
 170         draco_ddr3_emif_reg_data.sdram_tim3 = settings.ddr3.sdram_tim3;
 171         draco_ddr3_emif_reg_data.emif_ddr_phy_ctlr_1 =
 172                 settings.ddr3.emif_ddr_phy_ctlr_1;
 173         draco_ddr3_emif_reg_data.sdram_config = settings.ddr3.sdram_config;
 174         draco_ddr3_emif_reg_data.ref_ctrl = settings.ddr3.ref_ctrl;
 175
 176         draco_ddr3_data.datardsratio0 = settings.ddr3.dt0rdsratio0;
 177         draco_ddr3_data.datawdsratio0 = settings.ddr3.dt0wdsratio0;
 178         draco_ddr3_data.datafwsratio0 = settings.ddr3.dt0fwsratio0;
 179         draco_ddr3_data.datawrsratio0 = settings.ddr3.dt0wrsratio0;
 180
 181         draco_ddr3_cmd_ctrl_data.cmd0csratio = settings.ddr3.ddr3_sratio;
 182         draco_ddr3_cmd_ctrl_data.cmd0iclkout = settings.ddr3.iclkout;
 183         draco_ddr3_cmd_ctrl_data.cmd1csratio = settings.ddr3.ddr3_sratio;
 184         draco_ddr3_cmd_ctrl_data.cmd1iclkout = settings.ddr3.iclkout;
 185         draco_ddr3_cmd_ctrl_data.cmd2csratio = settings.ddr3.ddr3_sratio;
 186         draco_ddr3_cmd_ctrl_data.cmd2iclkout = settings.ddr3.iclkout;
 187
 188         draco_ddr3_ioregs.cm0ioctl = settings.ddr3.ioctr_val,
 189         draco_ddr3_ioregs.cm1ioctl = settings.ddr3.ioctr_val,
 190         draco_ddr3_ioregs.cm2ioctl = settings.ddr3.ioctr_val,
 191         draco_ddr3_ioregs.dt0ioctl = settings.ddr3.ioctr_val,
 192         draco_ddr3_ioregs.dt1ioctl = settings.ddr3.ioctr_val,
 193
 194         config_ddr(DDR_PLL_FREQ, &draco_ddr3_ioregs, &draco_ddr3_data,
 195                    &draco_ddr3_cmd_ctrl_data, &draco_ddr3_emif_reg_data, 0);
 196 }
 197
 198 static void spl_siemens_board_init(void)
 199 {
 200         return;
 201 }
 202 #endif /* if def CONFIG_SPL_BUILD */
 203
 204 #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
 205         (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
 206 static void cpsw_control(int enabled)
 207 {
 208         /* VTP can be added here */
 209
 210         return;
 211 }
 212
 213 static struct cpsw_slave_data cpsw_slaves[] = {
 214         {
 215                 .slave_reg_ofs  = 0x208,
 216                 .sliver_reg_ofs = 0xd80,
 217                 .phy_addr       = 0,
 218                 .phy_if         = PHY_INTERFACE_MODE_MII,
 219         },
 220 };
 221
 222 static struct cpsw_platform_data cpsw_data = {
 223         .mdio_base              = CPSW_MDIO_BASE,
 224         .cpsw_base              = CPSW_BASE,
 225         .mdio_div               = 0xff,
 226         .channels               = 4,
 227         .cpdma_reg_ofs          = 0x800,
 228         .slaves                 = 1,
 229         .slave_data             = cpsw_slaves,
 230         .ale_reg_ofs            = 0xd00,
 231         .ale_entries            = 1024,
 232         .host_port_reg_ofs      = 0x108,
 233         .hw_stats_reg_ofs       = 0x900,
 234         .bd_ram_ofs             = 0x2000,
 235         .mac_control            = (1 << 5),
 236         .control                = cpsw_control,
 237         .host_port_num          = 0,
 238         .version                = CPSW_CTRL_VERSION_2,
 239 };
 240
 241 #if defined(CONFIG_DRIVER_TI_CPSW) || \
 242         (defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET))
 243 int board_eth_init(bd_t *bis)
 244 {
 245         struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
 246         int n = 0;
 247         int rv;
 248
 249         factoryset_setenv();
 250
 251         /* Set rgmii mode and enable rmii clock to be sourced from chip */
 252         writel((RMII_MODE_ENABLE | RMII_CHIPCKL_ENABLE), &cdev->miisel);
 253
 254         rv = cpsw_register(&cpsw_data);
 255         if (rv < 0)
 256                 printf("Error %d registering CPSW switch\n", rv);
 257         else
 258                 n += rv;
 259         return n;
 260 }
 261
 262 static int do_switch_reset(cmd_tbl_t *cmdtp, int flag, int argc,
 263                            char *const argv[])
 264 {
 265         /* Reset SMSC LAN9303 switch for default configuration */
 266         gpio_request(GPIO_LAN9303_NRST, "nRST");
 267         gpio_direction_output(GPIO_LAN9303_NRST, 0);
 268         /* assert active low reset for 200us */
 269         udelay(200);
 270         gpio_set_value(GPIO_LAN9303_NRST, 1);
 271
 272         return 0;
 273 };
 274
 275 U_BOOT_CMD(
 276         switch_rst, CONFIG_SYS_MAXARGS, 1,      do_switch_reset,
 277         "Reset LAN9303 switch via its reset pin",
 278         ""
 279 );
 280 #endif /* #if defined(CONFIG_DRIVER_TI_CPSW) */
 281 #endif /* #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) */
 282
 283 #include "../common/board.c"