1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2012 4 * Corscience GmbH & Co. KG, <www.corscience.de> 5 * Thomas Weber <weber (at) corscience.de> 6 * Sunil Kumar <sunilsaini05 (at) gmail.com> 7 * Shashi Ranjan <shashiranjanmca05 (at) gmail.com> 8 * 9 * Derived from Devkit8000 code by 10 * Frederik Kriewitz <frederik (at) 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 } 205
