board/siemens/dxr2/board.c

   1 /*
   2  * Board functions for TI AM335X based dxr2 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 dxr2_baseboard_id __attribute__((section(".data"))) settings;
  41 /* @303MHz-i0 */
  42 const struct ddr3_data ddr3_default = {
  43         0x33524444, 0x56312e34, 0x0080, 0x0000, 0x0038, 0x003E, 0x00A4,
  44         0x0075, 0x0888A39B, 0x26247FDA, 0x501F821F, 0x00100206, 0x61A44A32,
  45         0x00000618, 0x0000014A,
  46 };
  47
  48 static void set_default_ddr3_timings(void)
  49 {
  50         printf("Set default DDR3 settings\n");
  51         settings.ddr3 = ddr3_default;
  52 }
  53
  54 static void print_ddr3_timings(void)
  55 {
  56         printf("\n\nDDR3 Timing parameters:\n");
  57         printf("Diff     Eeprom  Default\n");
  58         PRINTARGS(magic);
  59         PRINTARGS(version);
  60         PRINTARGS(ddr3_sratio);
  61         PRINTARGS(iclkout);
  62
  63         PRINTARGS(dt0rdsratio0);
  64         PRINTARGS(dt0wdsratio0);
  65         PRINTARGS(dt0fwsratio0);
  66         PRINTARGS(dt0wrsratio0);
  67
  68         PRINTARGS(sdram_tim1);
  69         PRINTARGS(sdram_tim2);
  70         PRINTARGS(sdram_tim3);
  71
  72         PRINTARGS(emif_ddr_phy_ctlr_1);
  73
  74         PRINTARGS(sdram_config);
  75         PRINTARGS(ref_ctrl);
  76         PRINTARGS(ioctr_val);
  77 }
  78
  79 static void print_chip_data(void)
  80 {
  81         printf("\n");
  82         printf("Device: '%s'\n", settings.chip.sdevname);
  83         printf("HW version: '%s'\n", settings.chip.shwver);
  84 }
  85 #endif /* CONFIG_SPL_BUILD */
  86
  87 /*
  88  * Read header information from EEPROM into global structure.
  89  */
  90 static int read_eeprom(void)
  91 {
  92         /* Check if baseboard eeprom is available */
  93         if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) {
  94                 printf("Could not probe the EEPROM; something fundamentally wrong on the I2C bus.\n");
  95                 return 1;
  96         }
  97
  98 #ifdef CONFIG_SPL_BUILD
  99         /* Read Siemens eeprom data (DDR3) */
 100         if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_ADDR_DDR3, 2,
 101                      (uchar *)&settings.ddr3, sizeof(struct ddr3_data))) {
 102                 printf("Could not read the EEPROM; something fundamentally wrong on the I2C bus.\nUse default DDR3 timings\n");
 103                 set_default_ddr3_timings();
 104         }
 105         /* Read Siemens eeprom data (CHIP) */
 106         if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_ADDR_CHIP, 2,
 107                      (uchar *)&settings.chip, sizeof(settings.chip)))
 108                 printf("Could not read chip settings\n");
 109
 110         if (ddr3_default.magic == settings.ddr3.magic &&
 111             ddr3_default.version == settings.ddr3.version) {
 112                 printf("Using DDR3 settings from EEPROM\n");
 113         } else {
 114                 if (ddr3_default.magic != settings.ddr3.magic)
 115                         printf("Error: No valid DDR3 data in eeprom.\n");
 116                 if (ddr3_default.version != settings.ddr3.version)
 117                         printf("Error: DDR3 data version does not match.\n");
 118
 119                 printf("Using default settings\n");
 120                 set_default_ddr3_timings();
 121         }
 122
 123         if (MAGIC_CHIP == settings.chip.magic) {
 124                 printf("Valid chip data in eeprom\n");
 125                 print_chip_data();
 126         } else {
 127                 printf("Error: No chip data in eeprom\n");
 128         }
 129
 130         print_ddr3_timings();
 131 #endif
 132         return 0;
 133 }
 134
 135 #ifdef CONFIG_SPL_BUILD
 136 static void board_init_ddr(void)
 137 {
 138 struct emif_regs dxr2_ddr3_emif_reg_data = {
 139         .zq_config = 0x50074BE4,
 140 };
 141
 142 struct ddr_data dxr2_ddr3_data = {
 143 };
 144
 145 struct cmd_control dxr2_ddr3_cmd_ctrl_data = {
 146 };
 147
 148 struct ctrl_ioregs dxr2_ddr3_ioregs = {
 149 };
 150
 151         /* pass values from eeprom */
 152         dxr2_ddr3_emif_reg_data.sdram_tim1 = settings.ddr3.sdram_tim1;
 153         dxr2_ddr3_emif_reg_data.sdram_tim2 = settings.ddr3.sdram_tim2;
 154         dxr2_ddr3_emif_reg_data.sdram_tim3 = settings.ddr3.sdram_tim3;
 155         dxr2_ddr3_emif_reg_data.emif_ddr_phy_ctlr_1 =
 156                 settings.ddr3.emif_ddr_phy_ctlr_1;
 157         dxr2_ddr3_emif_reg_data.sdram_config = settings.ddr3.sdram_config;
 158         dxr2_ddr3_emif_reg_data.ref_ctrl = settings.ddr3.ref_ctrl;
 159
 160         dxr2_ddr3_data.datardsratio0 = settings.ddr3.dt0rdsratio0;
 161         dxr2_ddr3_data.datawdsratio0 = settings.ddr3.dt0wdsratio0;
 162         dxr2_ddr3_data.datafwsratio0 = settings.ddr3.dt0fwsratio0;
 163         dxr2_ddr3_data.datawrsratio0 = settings.ddr3.dt0wrsratio0;
 164
 165         dxr2_ddr3_cmd_ctrl_data.cmd0csratio = settings.ddr3.ddr3_sratio;
 166         dxr2_ddr3_cmd_ctrl_data.cmd0iclkout = settings.ddr3.iclkout;
 167         dxr2_ddr3_cmd_ctrl_data.cmd1csratio = settings.ddr3.ddr3_sratio;
 168         dxr2_ddr3_cmd_ctrl_data.cmd1iclkout = settings.ddr3.iclkout;
 169         dxr2_ddr3_cmd_ctrl_data.cmd2csratio = settings.ddr3.ddr3_sratio;
 170         dxr2_ddr3_cmd_ctrl_data.cmd2iclkout = settings.ddr3.iclkout;
 171
 172         dxr2_ddr3_ioregs.cm0ioctl = settings.ddr3.ioctr_val,
 173         dxr2_ddr3_ioregs.cm1ioctl = settings.ddr3.ioctr_val,
 174         dxr2_ddr3_ioregs.cm2ioctl = settings.ddr3.ioctr_val,
 175         dxr2_ddr3_ioregs.dt0ioctl = settings.ddr3.ioctr_val,
 176         dxr2_ddr3_ioregs.dt1ioctl = settings.ddr3.ioctr_val,
 177
 178         config_ddr(DDR_PLL_FREQ, &dxr2_ddr3_ioregs, &dxr2_ddr3_data,
 179                    &dxr2_ddr3_cmd_ctrl_data, &dxr2_ddr3_emif_reg_data, 0);
 180 }
 181
 182 static void spl_siemens_board_init(void)
 183 {
 184         return;
 185 }
 186 #endif /* if def CONFIG_SPL_BUILD */
 187
 188 #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
 189         (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
 190 static void cpsw_control(int enabled)
 191 {
 192         /* VTP can be added here */
 193
 194         return;
 195 }
 196
 197 static struct cpsw_slave_data cpsw_slaves[] = {
 198         {
 199                 .slave_reg_ofs  = 0x208,
 200                 .sliver_reg_ofs = 0xd80,
 201                 .phy_addr       = 0,
 202                 .phy_if         = PHY_INTERFACE_MODE_MII,
 203         },
 204 };
 205
 206 static struct cpsw_platform_data cpsw_data = {
 207         .mdio_base              = CPSW_MDIO_BASE,
 208         .cpsw_base              = CPSW_BASE,
 209         .mdio_div               = 0xff,
 210         .channels               = 4,
 211         .cpdma_reg_ofs          = 0x800,
 212         .slaves                 = 1,
 213         .slave_data             = cpsw_slaves,
 214         .ale_reg_ofs            = 0xd00,
 215         .ale_entries            = 1024,
 216         .host_port_reg_ofs      = 0x108,
 217         .hw_stats_reg_ofs       = 0x900,
 218         .bd_ram_ofs             = 0x2000,
 219         .mac_control            = (1 << 5),
 220         .control                = cpsw_control,
 221         .host_port_num          = 0,
 222         .version                = CPSW_CTRL_VERSION_2,
 223 };
 224
 225 #if defined(CONFIG_DRIVER_TI_CPSW) || \
 226         (defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET))
 227 int board_eth_init(bd_t *bis)
 228 {
 229         struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
 230         int n = 0;
 231         int rv;
 232
 233         factoryset_setenv();
 234
 235         /* Set rgmii mode and enable rmii clock to be sourced from chip */
 236         writel((RMII_MODE_ENABLE | RMII_CHIPCKL_ENABLE), &cdev->miisel);
 237
 238         rv = cpsw_register(&cpsw_data);
 239         if (rv < 0)
 240                 printf("Error %d registering CPSW switch\n", rv);
 241         else
 242                 n += rv;
 243         return n;
 244 }
 245
 246 static int do_switch_reset(cmd_tbl_t *cmdtp, int flag, int argc,
 247                            char *const argv[])
 248 {
 249         /* Reset SMSC LAN9303 switch for default configuration */
 250         gpio_request(GPIO_LAN9303_NRST, "nRST");
 251         gpio_direction_output(GPIO_LAN9303_NRST, 0);
 252         /* assert active low reset for 200us */
 253         udelay(200);
 254         gpio_set_value(GPIO_LAN9303_NRST, 1);
 255
 256         return 0;
 257 };
 258
 259 U_BOOT_CMD(
 260         switch_rst, CONFIG_SYS_MAXARGS, 1,      do_switch_reset,
 261         "Reset LAN9303 switch via its reset pin",
 262         ""
 263 );
 264 #endif /* #if defined(CONFIG_DRIVER_TI_CPSW) */
 265 #endif /* #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) */
 266
 267 #include "../common/board.c"