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Diffstat (limited to 'board/BuR/kwb/board.c')
| -rw-r--r-- | board/BuR/kwb/board.c | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/board/BuR/kwb/board.c b/board/BuR/kwb/board.c new file mode 100644 index 0000000..8aa16bc --- /dev/null +++ b/board/BuR/kwb/board.c @@ -0,0 +1,240 @@ +/* + * board.c + * + * Board functions for B&R KWB Board + * + * Copyright (C) 2013 Hannes Petermaier <oe5hpm@oevsv.at> + * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com + * + * SPDX-License-Identifier: GPL-2.0+ + * + */ +#include <common.h> +#include <errno.h> +#include <spl.h> +#include <asm/arch/cpu.h> +#include <asm/arch/hardware.h> +#include <asm/arch/omap.h> +#include <asm/arch/ddr_defs.h> +#include <asm/arch/clock.h> +#include <asm/arch/gpio.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/mem.h> +#include <asm/io.h> +#include <asm/emif.h> +#include <asm/gpio.h> +#include <i2c.h> +#include <power/tps65217.h> +#include "../common/bur_common.h" + +/* -------------------------------------------------------------------------*/ +/* -- defines for used GPIO Hardware -- */ +#define KEY (0+4) +#define LCD_PWR (0+5) +#define PUSH_KEY (0+31) +#define USB2SD_NRST (32+29) +#define USB2SD_PWR (96+13) +/* -------------------------------------------------------------------------*/ +/* -- 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 + +#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, + 0 + }; + do_enable_clocks(clk_domains, clk_modules_kwbspecific, 1); + + /* power-OFF LCD-Display */ + gpio_direction_output(LCD_PWR, 0); + + /* setup I2C */ + enable_i2c0_pin_mux(); + i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE); + + /* power-ON 3V3 via Resetcontroller */ + oldspeed = i2c_get_bus_speed(); + if (0 != i2c_set_bus_speed(CONFIG_SYS_OMAP24_I2C_SPEED_PSOC)) { + buf = RSTCTRL_FORCE_PWR_NEN; + 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"); + } + +#if defined(CONFIG_AM335X_USB0) + /* power on USB2SD Controller */ + gpio_direction_output(USB2SD_PWR, 1); + mdelay(1); + /* give a reset Pulse to USB2SD Controller */ + gpio_direction_output(USB2SD_NRST, 0); + mdelay(1); + gpio_set_value(USB2SD_NRST, 1); +#endif + 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 ton = 250; + const unsigned int toff = 1000; + unsigned int cnt = 3; + unsigned short buf = 0xAAAA; + unsigned int oldspeed; + + tps65217_reg_write(TPS65217_PROT_LEVEL_NONE, + TPS65217_WLEDCTRL2, 0x32, 0xFF); /* 50% dimlevel */ + + if (gpio_get_value(KEY)) { + do { + /* turn on light */ + tps65217_reg_write(TPS65217_PROT_LEVEL_NONE, + TPS65217_WLEDCTRL1, 0x09, 0xFF); + mdelay(ton); + /* turn off light */ + tps65217_reg_write(TPS65217_PROT_LEVEL_NONE, + TPS65217_WLEDCTRL1, 0x01, 0xFF); + mdelay(toff); + cnt--; + if (!gpio_get_value(KEY) && + gpio_get_value(PUSH_KEY) && 1 == cnt) { + puts("updating from USB ...\n"); + setenv("bootcmd", "run usbupdate"); + break; + } else if (!gpio_get_value(KEY)) { + break; + } + } while (cnt); + } + + switch (cnt) { + case 0: + puts("3 blinks ... entering BOOT mode.\n"); + buf = 0x0000; + break; + case 1: + puts("2 blinks ... entering DIAGNOSE mode.\n"); + buf = 0x0F0F; + break; + case 2: + puts("1 blinks ... entering SERVICE mode.\n"); + buf = 0xB4B4; + break; + case 3: + puts("0 blinks ... entering RUN mode.\n"); + buf = 0x0404; + break; + } + mdelay(ton); + /* turn on light */ + tps65217_reg_write(TPS65217_PROT_LEVEL_NONE, + TPS65217_WLEDCTRL1, 0x09, 0xFF); + /* write bootinfo into scratchregister of resetcontroller */ + oldspeed = i2c_get_bus_speed(); + if (0 != i2c_set_bus_speed(CONFIG_SYS_OMAP24_I2C_SPEED_PSOC)) { + 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"); + } + /* + * 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 */ |