board/ti/ti814x/evm.c

   1 /*
   2  * evm.c
   3  *
   4  * Board functions for TI814x EVM
   5  *
   6  * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR /PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  */
  18
  19 #include <common.h>
  20 #include <cpsw.h>
  21 #include <errno.h>
  22 #include <spl.h>
  23 #include <asm/arch/cpu.h>
  24 #include <asm/arch/hardware.h>
  25 #include <asm/arch/omap.h>
  26 #include <asm/arch/ddr_defs.h>
  27 #include <asm/arch/clock.h>
  28 #include <asm/arch/gpio.h>
  29 #include <asm/arch/mmc_host_def.h>
  30 #include <asm/arch/sys_proto.h>
  31 #include <asm/io.h>
  32 #include <asm/emif.h>
  33 #include <asm/gpio.h>
  34 #include "evm.h"
  35
  36 DECLARE_GLOBAL_DATA_PTR;
  37
  38 #ifdef CONFIG_SPL_BUILD
  39 static struct wd_timer *wdtimer = (struct wd_timer *)WDT_BASE;
  40 #endif
  41
  42 static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
  43
  44 /* UART Defines */
  45 #ifdef CONFIG_SPL_BUILD
  46 static void uart_enable(void)
  47 {
  48         /* UART softreset */
  49         uart_soft_reset();
  50 }
  51
  52 static void wdt_disable(void)
  53 {
  54         writel(0xAAAA, &wdtimer->wdtwspr);
  55         while (readl(&wdtimer->wdtwwps) != 0x0)
  56                 ;
  57         writel(0x5555, &wdtimer->wdtwspr);
  58         while (readl(&wdtimer->wdtwwps) != 0x0)
  59                 ;
  60 }
  61
  62 static const struct cmd_control evm_ddr2_cctrl_data = {
  63         .cmd0csratio    = 0x80,
  64         .cmd0dldiff     = 0x04,
  65         .cmd0iclkout    = 0x00,
  66
  67         .cmd1csratio    = 0x80,
  68         .cmd1dldiff     = 0x04,
  69         .cmd1iclkout    = 0x00,
  70
  71         .cmd2csratio    = 0x80,
  72         .cmd2dldiff     = 0x04,
  73         .cmd2iclkout    = 0x00,
  74 };
  75
  76 static const struct emif_regs evm_ddr2_emif0_regs = {
  77         .sdram_config                   = 0x40801ab2,
  78         .ref_ctrl                       = 0x10000c30,
  79         .sdram_tim1                     = 0x0aaaf552,
  80         .sdram_tim2                     = 0x043631d2,
  81         .sdram_tim3                     = 0x00000327,
  82         .emif_ddr_phy_ctlr_1            = 0x00000007
  83 };
  84
  85 static const struct emif_regs evm_ddr2_emif1_regs = {
  86         .sdram_config                   = 0x40801ab2,
  87         .ref_ctrl                       = 0x10000c30,
  88         .sdram_tim1                     = 0x0aaaf552,
  89         .sdram_tim2                     = 0x043631d2,
  90         .sdram_tim3                     = 0x00000327,
  91         .emif_ddr_phy_ctlr_1            = 0x00000007
  92 };
  93
  94 const struct dmm_lisa_map_regs evm_lisa_map_regs = {
  95         .dmm_lisa_map_0                 = 0x00000000,
  96         .dmm_lisa_map_1                 = 0x00000000,
  97         .dmm_lisa_map_2                 = 0x806c0300,
  98         .dmm_lisa_map_3                 = 0x806c0300,
  99 };
 100
 101 static const struct ddr_data evm_ddr2_data = {
 102         .datardsratio0          = ((0x35<<10) | (0x35<<0)),
 103         .datawdsratio0          = ((0x20<<10) | (0x20<<0)),
 104         .datawiratio0           = ((0<<10) | (0<<0)),
 105         .datagiratio0           = ((0<<10) | (0<<0)),
 106         .datafwsratio0          = ((0x90<<10) | (0x90<<0)),
 107         .datawrsratio0          = ((0x50<<10) | (0x50<<0)),
 108         .datauserank0delay      = 1,
 109         .datadldiff0            = 0x4,
 110 };
 111 #endif
 112
 113 /*
 114  * early system init of muxing and clocks.
 115  */
 116 void s_init(void)
 117 {
 118 #ifdef CONFIG_SPL_BUILD
 119         /*
 120          * Save the boot parameters passed from romcode.
 121          * We cannot delay the saving further than this,
 122          * to prevent overwrites.
 123          */
 124 #ifdef CONFIG_SPL_BUILD
 125         save_omap_boot_params();
 126 #endif
 127
 128         /* WDT1 is already running when the bootloader gets control
 129          * Disable it to avoid "random" resets
 130          */
 131         wdt_disable();
 132
 133         /* Enable timer */
 134         timer_init();
 135
 136         /* Setup the PLLs and the clocks for the peripherals */
 137         pll_init();
 138
 139         /* Enable RTC32K clock */
 140         rtc32k_enable();
 141
 142         /* Set UART pins */
 143         enable_uart0_pin_mux();
 144
 145         /* Set MMC pins */
 146         enable_mmc1_pin_mux();
 147
 148         /* Set Ethernet pins */
 149         enable_enet_pin_mux();
 150
 151         /* Enable UART */
 152         uart_enable();
 153
 154         gd = &gdata;
 155
 156         preloader_console_init();
 157
 158         config_dmm(&evm_lisa_map_regs);
 159
 160         config_ddr(0, 0, &evm_ddr2_data, &evm_ddr2_cctrl_data,
 161                    &evm_ddr2_emif0_regs, 0);
 162         config_ddr(0, 0, &evm_ddr2_data, &evm_ddr2_cctrl_data,
 163                    &evm_ddr2_emif1_regs, 1);
 164 #endif
 165 }
 166
 167 /*
 168  * Basic board specific setup.  Pinmux has been handled already.
 169  */
 170 int board_init(void)
 171 {
 172         gd->bd->bi_boot_params = PHYS_DRAM_1 + 0x100;
 173         return 0;
 174 }
 175
 176 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_GENERIC_MMC)
 177 int board_mmc_init(bd_t *bis)
 178 {
 179         omap_mmc_init(1, 0, 0, -1, -1);
 180
 181         return 0;
 182 }
 183 #endif
 184
 185 #ifdef CONFIG_DRIVER_TI_CPSW
 186 static void cpsw_control(int enabled)
 187 {
 188         /* VTP can be added here */
 189
 190         return;
 191 }
 192
 193 static struct cpsw_slave_data cpsw_slaves[] = {
 194         {
 195                 .slave_reg_ofs  = 0x50,
 196                 .sliver_reg_ofs = 0x700,
 197                 .phy_id         = 1,
 198         },
 199         {
 200                 .slave_reg_ofs  = 0x90,
 201                 .sliver_reg_ofs = 0x740,
 202                 .phy_id         = 0,
 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               = 8,
 211         .cpdma_reg_ofs          = 0x100,
 212         .slaves                 = 1,
 213         .slave_data             = cpsw_slaves,
 214         .ale_reg_ofs            = 0x600,
 215         .ale_entries            = 1024,
 216         .host_port_reg_ofs      = 0x28,
 217         .hw_stats_reg_ofs       = 0x400,
 218         .mac_control            = (1 << 5),
 219         .control                = cpsw_control,
 220         .host_port_num          = 0,
 221         .version                = CPSW_CTRL_VERSION_1,
 222 };
 223 #endif
 224
 225 int board_eth_init(bd_t *bis)
 226 {
 227         uint8_t mac_addr[6];
 228         uint32_t mac_hi, mac_lo;
 229
 230         if (!eth_getenv_enetaddr("ethaddr", mac_addr)) {
 231                 printf("<ethaddr> not set. Reading from E-fuse\n");
 232                 /* try reading mac address from efuse */
 233                 mac_lo = readl(&cdev->macid0l);
 234                 mac_hi = readl(&cdev->macid0h);
 235                 mac_addr[0] = mac_hi & 0xFF;
 236                 mac_addr[1] = (mac_hi & 0xFF00) >> 8;
 237                 mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
 238                 mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
 239                 mac_addr[4] = mac_lo & 0xFF;
 240                 mac_addr[5] = (mac_lo & 0xFF00) >> 8;
 241
 242                 if (is_valid_ether_addr(mac_addr))
 243                         eth_setenv_enetaddr("ethaddr", mac_addr);
 244                 else
 245                         printf("Unable to read MAC address. Set <ethaddr>\n");
 246         }
 247
 248         return cpsw_register(&cpsw_data);
 249 }