/* * board.c * * Board functions for B&R KWB Board * * Copyright (C) 2013 Hannes Schmelzer * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com * * SPDX-License-Identifier: GPL-2.0+ * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "../common/bur_common.h" #include /* -------------------------------------------------------------------------*/ /* -- defines for used GPIO Hardware -- */ #define ESC_KEY (0+19) #define LCD_PWR (0+5) #define PUSH_KEY (0+31) /* -------------------------------------------------------------------------*/ /* -- PSOC Resetcontroller Register defines -- */ /* I2C Address of controller */ #define RSTCTRL_ADDR 0x75 /* Register for CTRL-word */ #define RSTCTRL_CTRLREG 0x01 /* Register for giving some information to VxWorks OS */ #define RSTCTRL_SCRATCHREG 0x04 /* -- defines for RSTCTRL_CTRLREG -- */ #define RSTCTRL_FORCE_PWR_NEN 0x0404 #define RSTCTRL_CAN_STB 0x4040 DECLARE_GLOBAL_DATA_PTR; #if defined(CONFIG_SPL_BUILD) /* TODO: check ram-timing ! */ static const struct ddr_data ddr3_data = { .datardsratio0 = MT41K256M16HA125E_RD_DQS, .datawdsratio0 = MT41K256M16HA125E_WR_DQS, .datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE, .datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA, }; static const struct cmd_control ddr3_cmd_ctrl_data = { .cmd0csratio = MT41K256M16HA125E_RATIO, .cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT, .cmd1csratio = MT41K256M16HA125E_RATIO, .cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT, .cmd2csratio = MT41K256M16HA125E_RATIO, .cmd2iclkout = MT41K256M16HA125E_INVERT_CLKOUT, }; static struct emif_regs ddr3_emif_reg_data = { .sdram_config = MT41K256M16HA125E_EMIF_SDCFG, .ref_ctrl = MT41K256M16HA125E_EMIF_SDREF, .sdram_tim1 = MT41K256M16HA125E_EMIF_TIM1, .sdram_tim2 = MT41K256M16HA125E_EMIF_TIM2, .sdram_tim3 = MT41K256M16HA125E_EMIF_TIM3, .zq_config = MT41K256M16HA125E_ZQ_CFG, .emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY, }; static const struct ctrl_ioregs ddr3_ioregs = { .cm0ioctl = MT41K256M16HA125E_IOCTRL_VALUE, .cm1ioctl = MT41K256M16HA125E_IOCTRL_VALUE, .cm2ioctl = MT41K256M16HA125E_IOCTRL_VALUE, .dt0ioctl = MT41K256M16HA125E_IOCTRL_VALUE, .dt1ioctl = MT41K256M16HA125E_IOCTRL_VALUE, }; #define OSC (V_OSCK/1000000) const struct dpll_params dpll_ddr3 = { 400, OSC-1, 1, -1, -1, -1, -1}; void am33xx_spl_board_init(void) { unsigned int oldspeed; unsigned short buf; struct cm_perpll *const cmper = (struct cm_perpll *)CM_PER; struct cm_wkuppll *const cmwkup = (struct cm_wkuppll *)CM_WKUP; /* * enable additional clocks of modules which are accessed later from * VxWorks OS */ u32 *const clk_domains[] = { 0 }; u32 *const clk_modules_kwbspecific[] = { &cmwkup->wkup_adctscctrl, &cmper->spi1clkctrl, &cmper->dcan0clkctrl, &cmper->dcan1clkctrl, &cmper->epwmss0clkctrl, &cmper->epwmss1clkctrl, &cmper->epwmss2clkctrl, &cmper->lcdclkctrl, &cmper->lcdcclkstctrl, 0 }; do_enable_clocks(clk_domains, clk_modules_kwbspecific, 1); /* setup LCD-Pixel Clock */ writel(0x2, CM_DPLL + 0x34); /* power-OFF LCD-Display */ gpio_direction_output(LCD_PWR, 0); /* setup I2C */ enable_i2c_pin_mux(); i2c_set_bus_num(0); i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE); /* power-ON 3V3 via Resetcontroller */ oldspeed = i2c_get_bus_speed(); if (i2c_set_bus_speed(CONFIG_SYS_OMAP24_I2C_SPEED_PSOC) >= 0) { buf = RSTCTRL_FORCE_PWR_NEN | RSTCTRL_CAN_STB; i2c_write(RSTCTRL_ADDR, RSTCTRL_CTRLREG, 1, (uint8_t *)&buf, sizeof(buf)); i2c_set_bus_speed(oldspeed); } else { puts("ERROR: i2c_set_bus_speed failed! (turn on PWR_nEN)\n"); } pmicsetup(0); } const struct dpll_params *get_dpll_ddr_params(void) { return &dpll_ddr3; } void sdram_init(void) { config_ddr(400, &ddr3_ioregs, &ddr3_data, &ddr3_cmd_ctrl_data, &ddr3_emif_reg_data, 0); } #endif /* CONFIG_SPL_BUILD */ /* * Basic board specific setup. Pinmux has been handled already. */ int board_init(void) { gpmc_init(); return 0; } #ifdef CONFIG_BOARD_LATE_INIT int board_late_init(void) { const unsigned int toff = 1000; unsigned int cnt = 3; unsigned short buf = 0xAAAA; unsigned char scratchreg = 0; unsigned int oldspeed; /* try to read out some boot-instruction from resetcontroller */ oldspeed = i2c_get_bus_speed(); if (i2c_set_bus_speed(CONFIG_SYS_OMAP24_I2C_SPEED_PSOC) >= 0) { i2c_read(RSTCTRL_ADDR, RSTCTRL_SCRATCHREG, 1, &scratchreg, sizeof(scratchreg)); i2c_set_bus_speed(oldspeed); } else { puts("ERROR: i2c_set_bus_speed failed! (scratchregister)\n"); } if (gpio_get_value(ESC_KEY)) { do { lcd_position_cursor(1, 8); switch (cnt) { case 3: lcd_puts( "release ESC-KEY to enter SERVICE-mode."); break; case 2: lcd_puts( "release ESC-KEY to enter DIAGNOSE-mode."); break; case 1: lcd_puts( "release ESC-KEY to enter BOOT-mode. "); break; } mdelay(toff); cnt--; if (!gpio_get_value(ESC_KEY) && gpio_get_value(PUSH_KEY) && 2 == cnt) { lcd_position_cursor(1, 8); lcd_puts( "switching to network-console ... "); setenv("bootcmd", "run netconsole"); cnt = 4; break; } else if (!gpio_get_value(ESC_KEY) && gpio_get_value(PUSH_KEY) && 1 == cnt) { lcd_position_cursor(1, 8); lcd_puts( "starting u-boot script from USB ... "); setenv("bootcmd", "run usbscript"); cnt = 4; break; } else if ((!gpio_get_value(ESC_KEY) && gpio_get_value(PUSH_KEY) && cnt == 0) || (gpio_get_value(ESC_KEY) && gpio_get_value(PUSH_KEY) && cnt == 0)) { lcd_position_cursor(1, 8); lcd_puts( "starting script from network ... "); setenv("bootcmd", "run netscript"); cnt = 4; break; } else if (!gpio_get_value(ESC_KEY)) { break; } } while (cnt); } else if (scratchreg == 0xCC) { lcd_position_cursor(1, 8); lcd_puts( "starting vxworks from network ... "); setenv("bootcmd", "run netboot"); cnt = 4; } else if (scratchreg == 0xCD) { lcd_position_cursor(1, 8); lcd_puts( "starting script from network ... "); setenv("bootcmd", "run netscript"); cnt = 4; } else if (scratchreg == 0xCE) { lcd_position_cursor(1, 8); lcd_puts( "starting AR from eMMC ... "); setenv("bootcmd", "run mmcboot"); cnt = 4; } lcd_position_cursor(1, 8); switch (cnt) { case 0: lcd_puts("entering BOOT-mode. "); setenv("bootcmd", "run defaultAR"); buf = 0x0000; break; case 1: lcd_puts("entering DIAGNOSE-mode. "); buf = 0x0F0F; break; case 2: lcd_puts("entering SERVICE mode. "); buf = 0xB4B4; break; case 3: lcd_puts("loading OS... "); buf = 0x0404; break; } /* write bootinfo into scratchregister of resetcontroller */ oldspeed = i2c_get_bus_speed(); if (i2c_set_bus_speed(CONFIG_SYS_OMAP24_I2C_SPEED_PSOC) >= 0) { i2c_write(RSTCTRL_ADDR, RSTCTRL_SCRATCHREG, 1, (uint8_t *)&buf, sizeof(buf)); i2c_set_bus_speed(oldspeed); } else { puts("ERROR: i2c_set_bus_speed failed! (scratchregister)\n"); } /* setup othbootargs for bootvx-command (vxWorks bootline) */ char othbootargs[128]; snprintf(othbootargs, sizeof(othbootargs), "u=vxWorksFTP pw=vxWorks o=0x%08x;0x%08x;0x%08x;0x%08x", (unsigned int) gd->fb_base-0x20, (u32)getenv_ulong("vx_memtop", 16, gd->fb_base-0x20), (u32)getenv_ulong("vx_romfsbase", 16, 0), (u32)getenv_ulong("vx_romfssize", 16, 0)); setenv("othbootargs", othbootargs); /* * reset VBAR registers to its reset location, VxWorks 6.9.3.2 does * expect that vectors are there, original u-boot moves them to _start */ __asm__("ldr r0,=0x20000"); __asm__("mcr p15, 0, r0, c12, c0, 0"); /* Set VBAR */ return 0; } #endif /* CONFIG_BOARD_LATE_INIT */