git.sur5r.net Git - u-boot/blob - board/corscience/tricorder/tricorder.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2012
   4  * Corscience GmbH & Co. KG, <www.corscience.de>
   5  * Thomas Weber <weber@corscience.de>
   6  * Sunil Kumar <sunilsaini05@gmail.com>
   7  * Shashi Ranjan <shashiranjanmca05@gmail.com>
   8  *
   9  * Derived from Devkit8000 code by
  10  * Frederik Kriewitz <frederik@kriewitz.eu>
  11  */
  12 #include <common.h>
  13 #include <twl4030.h>
  14 #include <asm/io.h>
  15 #include <asm/gpio.h>
  16 #include <asm/arch/mmc_host_def.h>
  17 #include <asm/arch/mux.h>
  18 #include <asm/arch/sys_proto.h>
  19 #include <asm/arch/mem.h>
  20 #include "tricorder.h"
  21 #include "tricorder-eeprom.h"
  22
  23 DECLARE_GLOBAL_DATA_PTR;
  24
  25 /*
  26  * Routine: board_init
  27  * Description: Early hardware init.
  28  */
  29 int board_init(void)
  30 {
  31         gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
  32         /* boot param addr */
  33         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
  34
  35         return 0;
  36 }
  37
  38 /**
  39  * get_eeprom - read the eeprom
  40  *
  41  * @eeprom - pointer to a eeprom struct to fill
  42  *
  43  * This function will panic() on wrong EEPROM content
  44  */
  45 static void get_eeprom(struct tricorder_eeprom *eeprom)
  46 {
  47         int ret;
  48
  49         if (!eeprom)
  50                 panic("No eeprom given!\n");
  51
  52         ret = gpio_request(7, "BMS");
  53         if (ret)
  54                 panic("gpio: requesting BMS pin failed\n");
  55
  56         ret = gpio_direction_input(7);
  57         if (ret)
  58                 panic("gpio: set BMS as input failed\n");
  59
  60         ret = gpio_get_value(7);
  61         if (ret < 0)
  62                 panic("gpio: get BMS pin state failed\n");
  63
  64         gpio_free(7);
  65
  66         if (ret == 0) {
  67                 /* BMS is _not_ set, do the EEPROM check */
  68                 ret = tricorder_get_eeprom(0x51, eeprom);
  69                 if (!ret) {
  70                         if (strncmp(eeprom->board_name, "CS10411", 7) != 0)
  71                                 panic("Wrong board name '%.*s'\n",
  72                                       sizeof(eeprom->board_name),
  73                                                 eeprom->board_name);
  74                         if (eeprom->board_version[0] < 'D')
  75                                 panic("Wrong board version '%.*s'\n",
  76                                       sizeof(eeprom->board_version),
  77                                                 eeprom->board_version);
  78                 } else {
  79                         panic("Could not get board revision\n");
  80                 }
  81         } else {
  82                 memset(eeprom, 0, TRICORDER_EEPROM_SIZE);
  83         }
  84 }
  85
  86 /**
  87  * print_hwversion - print out a HW version string
  88  *
  89  * @eeprom - pointer to the eeprom
  90  */
  91 static void print_hwversion(struct tricorder_eeprom *eeprom)
  92 {
  93         size_t len;
  94         if (!eeprom)
  95                 panic("No eeprom given!");
  96
  97         printf("Board %.*s:%.*s serial %.*s",
  98                sizeof(eeprom->board_name), eeprom->board_name,
  99                sizeof(eeprom->board_version), eeprom->board_version,
 100                sizeof(eeprom->board_serial), eeprom->board_serial);
 101
 102         len = strnlen(eeprom->interface_version,
 103                       sizeof(eeprom->interface_version));
 104         if (len > 0)
 105                 printf(" HW interface version %.*s",
 106                        sizeof(eeprom->interface_version),
 107                        eeprom->interface_version);
 108         puts("\n");
 109 }
 110
 111 /*
 112  * Routine: misc_init_r
 113  * Description: Configure board specific parts
 114  */
 115 int misc_init_r(void)
 116 {
 117         struct tricorder_eeprom eeprom;
 118         get_eeprom(&eeprom);
 119         print_hwversion(&eeprom);
 120
 121         twl4030_power_init();
 122         status_led_set(0, CONFIG_LED_STATUS_ON);
 123         status_led_set(1, CONFIG_LED_STATUS_ON);
 124         status_led_set(2, CONFIG_LED_STATUS_ON);
 125
 126         omap_die_id_display();
 127
 128         return 0;
 129 }
 130
 131 /*
 132  * Routine: set_muxconf_regs
 133  * Description: Setting up the configuration Mux registers specific to the
 134  *              hardware. Many pins need to be moved from protect to primary
 135  *              mode.
 136  */
 137 void set_muxconf_regs(void)
 138 {
 139         MUX_TRICORDER();
 140 }
 141
 142 #if defined(CONFIG_MMC)
 143 int board_mmc_init(bd_t *bis)
 144 {
 145         return omap_mmc_init(0, 0, 0, -1, -1);
 146 }
 147 #endif
 148
 149 #if defined(CONFIG_MMC)
 150 void board_mmc_power_init(void)
 151 {
 152         twl4030_power_mmc_init(0);
 153 }
 154 #endif
 155
 156 /*
 157  * Routine: get_board_mem_timings
 158  * Description: If we use SPL then there is no x-loader nor config header
 159  * so we have to setup the DDR timings ourself on the first bank.  This
 160  * provides the timing values back to the function that configures
 161  * the memory.  We have either one or two banks of 128MB DDR.
 162  */
 163 void get_board_mem_timings(struct board_sdrc_timings *timings)
 164 {
 165         struct tricorder_eeprom eeprom;
 166         get_eeprom(&eeprom);
 167
 168         /* General SDRC config */
 169         if (eeprom.board_version[0] > 'D') {
 170                 /* use optimized timings for our SDRAM device */
 171                 timings->mcfg = MCFG((256 << 20), 14);
 172 #define MT46H64M32_TDAL  6      /* Twr/Tck + Trp/tck            */
 173                                 /* 15/6 + 18/6 = 5.5 -> 6       */
 174 #define MT46H64M32_TDPL  3      /* 15/6 = 2.5 -> 3 (Twr)        */
 175 #define MT46H64M32_TRRD  2      /* 12/6 = 2                     */
 176 #define MT46H64M32_TRCD  3      /* 18/6 = 3                     */
 177 #define MT46H64M32_TRP   3      /* 18/6 = 3                     */
 178 #define MT46H64M32_TRAS  7      /* 42/6 = 7                     */
 179 #define MT46H64M32_TRC  10      /* 60/6 = 10                    */
 180 #define MT46H64M32_TRFC 12      /* 72/6 = 12                    */
 181                 timings->ctrla = ACTIM_CTRLA(MT46H64M32_TRFC, MT46H64M32_TRC,
 182                                              MT46H64M32_TRAS, MT46H64M32_TRP,
 183                                              MT46H64M32_TRCD, MT46H64M32_TRRD,
 184                                              MT46H64M32_TDPL,
 185                                              MT46H64M32_TDAL);
 186
 187 #define MT46H64M32_TWTR 1
 188 #define MT46H64M32_TCKE 1
 189 #define MT46H64M32_XSR 19       /* 112.5/6 = 18.75 => ~19       */
 190 #define MT46H64M32_TXP 1
 191                 timings->ctrlb = ACTIM_CTRLB(MT46H64M32_TWTR, MT46H64M32_TCKE,
 192                                              MT46H64M32_TXP, MT46H64M32_XSR);
 193
 194                 timings->mr = MICRON_V_MR_165;
 195                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 196         } else {
 197                 /* use conservative beagleboard timings as default */
 198                 timings->mcfg = MICRON_V_MCFG_165(128 << 20);
 199                 timings->ctrla = MICRON_V_ACTIMA_165;
 200                 timings->ctrlb = MICRON_V_ACTIMB_165;
 201                 timings->mr = MICRON_V_MR_165;
 202                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 203         }
 204 }