| /* |
| * (C) Copyright 2012 |
| * Corscience GmbH & Co. KG, <www.corscience.de> |
| * Thomas Weber <weber@corscience.de> |
| * Sunil Kumar <sunilsaini05@gmail.com> |
| * Shashi Ranjan <shashiranjanmca05@gmail.com> |
| * |
| * Derived from Devkit8000 code by |
| * Frederik Kriewitz <frederik@kriewitz.eu> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| #include <common.h> |
| #include <twl4030.h> |
| #include <asm/io.h> |
| #include <asm/gpio.h> |
| #include <asm/arch/mmc_host_def.h> |
| #include <asm/arch/mux.h> |
| #include <asm/arch/sys_proto.h> |
| #include <asm/arch/mem.h> |
| #include "tricorder.h" |
| #include "tricorder-eeprom.h" |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| /* |
| * Routine: board_init |
| * Description: Early hardware init. |
| */ |
| int board_init(void) |
| { |
| gpmc_init(); /* in SRAM or SDRAM, finish GPMC */ |
| /* boot param addr */ |
| gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); |
| |
| return 0; |
| } |
| |
| /** |
| * get_eeprom - read the eeprom |
| * |
| * @eeprom - pointer to a eeprom struct to fill |
| * |
| * This function will panic() on wrong EEPROM content |
| */ |
| static void get_eeprom(struct tricorder_eeprom *eeprom) |
| { |
| int ret; |
| |
| if (!eeprom) |
| panic("No eeprom given!\n"); |
| |
| ret = gpio_request(7, "BMS"); |
| if (ret) |
| panic("gpio: requesting BMS pin failed\n"); |
| |
| ret = gpio_direction_input(7); |
| if (ret) |
| panic("gpio: set BMS as input failed\n"); |
| |
| ret = gpio_get_value(7); |
| if (ret < 0) |
| panic("gpio: get BMS pin state failed\n"); |
| |
| gpio_free(7); |
| |
| if (ret == 0) { |
| /* BMS is _not_ set, do the EEPROM check */ |
| ret = tricorder_get_eeprom(0x51, eeprom); |
| if (!ret) { |
| if (strncmp(eeprom->board_name, "CS10411", 7) != 0) |
| panic("Wrong board name '%.*s'\n", |
| sizeof(eeprom->board_name), |
| eeprom->board_name); |
| if (eeprom->board_version[0] < 'D') |
| panic("Wrong board version '%.*s'\n", |
| sizeof(eeprom->board_version), |
| eeprom->board_version); |
| } else { |
| panic("Could not get board revision\n"); |
| } |
| } else { |
| memset(eeprom, 0, TRICORDER_EEPROM_SIZE); |
| } |
| } |
| |
| /** |
| * print_hwversion - print out a HW version string |
| * |
| * @eeprom - pointer to the eeprom |
| */ |
| static void print_hwversion(struct tricorder_eeprom *eeprom) |
| { |
| size_t len; |
| if (!eeprom) |
| panic("No eeprom given!"); |
| |
| printf("Board %.*s:%.*s serial %.*s", |
| sizeof(eeprom->board_name), eeprom->board_name, |
| sizeof(eeprom->board_version), eeprom->board_version, |
| sizeof(eeprom->board_serial), eeprom->board_serial); |
| |
| len = strnlen(eeprom->interface_version, |
| sizeof(eeprom->interface_version)); |
| if (len > 0) |
| printf(" HW interface version %.*s", |
| sizeof(eeprom->interface_version), |
| eeprom->interface_version); |
| puts("\n"); |
| } |
| |
| /* |
| * Routine: misc_init_r |
| * Description: Configure board specific parts |
| */ |
| int misc_init_r(void) |
| { |
| struct tricorder_eeprom eeprom; |
| get_eeprom(&eeprom); |
| print_hwversion(&eeprom); |
| |
| twl4030_power_init(); |
| status_led_set(0, STATUS_LED_ON); |
| status_led_set(1, STATUS_LED_ON); |
| status_led_set(2, STATUS_LED_ON); |
| |
| dieid_num_r(); |
| |
| return 0; |
| } |
| |
| /* |
| * Routine: set_muxconf_regs |
| * Description: Setting up the configuration Mux registers specific to the |
| * hardware. Many pins need to be moved from protect to primary |
| * mode. |
| */ |
| void set_muxconf_regs(void) |
| { |
| MUX_TRICORDER(); |
| } |
| |
| #if defined(CONFIG_GENERIC_MMC) && !(defined(CONFIG_SPL_BUILD)) |
| int board_mmc_init(bd_t *bis) |
| { |
| return omap_mmc_init(0, 0, 0, -1, -1); |
| } |
| #endif |
| |
| /* |
| * Routine: get_board_mem_timings |
| * Description: If we use SPL then there is no x-loader nor config header |
| * so we have to setup the DDR timings ourself on the first bank. This |
| * provides the timing values back to the function that configures |
| * the memory. We have either one or two banks of 128MB DDR. |
| */ |
| void get_board_mem_timings(struct board_sdrc_timings *timings) |
| { |
| struct tricorder_eeprom eeprom; |
| get_eeprom(&eeprom); |
| |
| /* General SDRC config */ |
| if (eeprom.board_version[0] > 'D') { |
| /* use optimized timings for our SDRAM device */ |
| timings->mcfg = MCFG((256 << 20), 14); |
| #define MT46H64M32_TDAL 6 /* Twr/Tck + Trp/tck */ |
| /* 15/6 + 18/6 = 5.5 -> 6 */ |
| #define MT46H64M32_TDPL 3 /* 15/6 = 2.5 -> 3 (Twr) */ |
| #define MT46H64M32_TRRD 2 /* 12/6 = 2 */ |
| #define MT46H64M32_TRCD 3 /* 18/6 = 3 */ |
| #define MT46H64M32_TRP 3 /* 18/6 = 3 */ |
| #define MT46H64M32_TRAS 7 /* 42/6 = 7 */ |
| #define MT46H64M32_TRC 10 /* 60/6 = 10 */ |
| #define MT46H64M32_TRFC 12 /* 72/6 = 12 */ |
| timings->ctrla = ACTIM_CTRLA(MT46H64M32_TRFC, MT46H64M32_TRC, |
| MT46H64M32_TRAS, MT46H64M32_TRP, |
| MT46H64M32_TRCD, MT46H64M32_TRRD, |
| MT46H64M32_TDPL, |
| MT46H64M32_TDAL); |
| |
| #define MT46H64M32_TWTR 1 |
| #define MT46H64M32_TCKE 1 |
| #define MT46H64M32_XSR 19 /* 112.5/6 = 18.75 => ~19 */ |
| #define MT46H64M32_TXP 1 |
| timings->ctrlb = ACTIM_CTRLB(MT46H64M32_TWTR, MT46H64M32_TCKE, |
| MT46H64M32_TXP, MT46H64M32_XSR); |
| |
| timings->mr = MICRON_V_MR_165; |
| timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz; |
| } else { |
| /* use conservative beagleboard timings as default */ |
| timings->mcfg = MICRON_V_MCFG_165(128 << 20); |
| timings->ctrla = MICRON_V_ACTIMA_165; |
| timings->ctrlb = MICRON_V_ACTIMB_165; |
| timings->mr = MICRON_V_MR_165; |
| timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz; |
| } |
| } |