diff options
Diffstat (limited to 'board/bosch/shc/board.c')
| -rw-r--r-- | board/bosch/shc/board.c | 648 |
1 files changed, 648 insertions, 0 deletions
diff --git a/board/bosch/shc/board.c b/board/bosch/shc/board.c new file mode 100644 index 0000000000..e90693feea --- /dev/null +++ b/board/bosch/shc/board.c @@ -0,0 +1,648 @@ +/* + * board.c + * + * (C) Copyright 2016 + * Heiko Schocher, DENX Software Engineering, hs@denx.de. + * + * Based on: + * Board functions for TI AM335X based boards + * + * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.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/mmc_host_def.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 <miiphy.h> +#include <cpsw.h> +#include <power/tps65217.h> +#include <environment.h> +#include <watchdog.h> +#include <environment.h> +#include "mmc.h" +#include "board.h" + +DECLARE_GLOBAL_DATA_PTR; + +#if defined(CONFIG_SPL_BUILD) || \ + (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_DM_ETH)) +static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE; +#endif +static struct shc_eeprom __attribute__((section(".data"))) header; +static int shc_eeprom_valid; + +/* + * Read header information from EEPROM into global structure. + */ +static int read_eeprom(void) +{ + /* Check if baseboard eeprom is available */ + if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) { + puts("Could not probe the EEPROM; something fundamentally wrong on the I2C bus.\n"); + return -ENODEV; + } + + /* read the eeprom using i2c */ + if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 2, (uchar *)&header, + sizeof(header))) { + puts("Could not read the EEPROM; something fundamentally wrong on the I2C bus.\n"); + return -EIO; + } + + if (header.magic != HDR_MAGIC) { + printf("Incorrect magic number (0x%x) in EEPROM\n", + header.magic); + return -EIO; + } + + shc_eeprom_valid = 1; + + return 0; +} + +static void shc_request_gpio(void) +{ + gpio_request(LED_PWR_BL_GPIO, "LED PWR BL"); + gpio_request(LED_PWR_RD_GPIO, "LED PWR RD"); + gpio_request(RESET_GPIO, "reset"); + gpio_request(WIFI_REGEN_GPIO, "WIFI REGEN"); + gpio_request(WIFI_RST_GPIO, "WIFI rst"); + gpio_request(ZIGBEE_RST_GPIO, "ZigBee rst"); + gpio_request(BIDCOS_RST_GPIO, "BIDCOS rst"); + gpio_request(ENOC_RST_GPIO, "ENOC rst"); +#if defined CONFIG_B_SAMPLE + gpio_request(LED_PWR_GN_GPIO, "LED PWR GN"); + gpio_request(LED_CONN_BL_GPIO, "LED CONN BL"); + gpio_request(LED_CONN_RD_GPIO, "LED CONN RD"); + gpio_request(LED_CONN_GN_GPIO, "LED CONN GN"); +#else + gpio_request(LED_LAN_BL_GPIO, "LED LAN BL"); + gpio_request(LED_LAN_RD_GPIO, "LED LAN RD"); + gpio_request(LED_CLOUD_BL_GPIO, "LED CLOUD BL"); + gpio_request(LED_CLOUD_RD_GPIO, "LED CLOUD RD"); + gpio_request(LED_PWM_GPIO, "LED PWM"); + gpio_request(Z_WAVE_RST_GPIO, "Z WAVE rst"); +#endif + gpio_request(BACK_BUTTON_GPIO, "Back button"); + gpio_request(FRONT_BUTTON_GPIO, "Front button"); +} + +/* + * Function which forces all installed modules into running state for ICT + * testing. Called by SPL. + */ +static void __maybe_unused force_modules_running(void) +{ + /* Wi-Fi power regulator enable - high = enabled */ + gpio_direction_output(WIFI_REGEN_GPIO, 1); + /* + * Wait for Wi-Fi power regulator to reach a stable voltage + * (soft-start time, max. 350 µs) + */ + __udelay(350); + + /* Wi-Fi module reset - high = running */ + gpio_direction_output(WIFI_RST_GPIO, 1); + + /* ZigBee reset - high = running */ + gpio_direction_output(ZIGBEE_RST_GPIO, 1); + + /* BidCos reset - high = running */ + gpio_direction_output(BIDCOS_RST_GPIO, 1); + +#if !defined(CONFIG_B_SAMPLE) + /* Z-Wave reset - high = running */ + gpio_direction_output(Z_WAVE_RST_GPIO, 1); +#endif + + /* EnOcean reset - low = running */ + gpio_direction_output(ENOC_RST_GPIO, 0); +} + +/* + * Function which forces all installed modules into reset - to be released by + * the OS, called by SPL + */ +static void __maybe_unused force_modules_reset(void) +{ + /* Wi-Fi module reset - low = reset */ + gpio_direction_output(WIFI_RST_GPIO, 0); + + /* Wi-Fi power regulator enable - low = disabled */ + gpio_direction_output(WIFI_REGEN_GPIO, 0); + + /* ZigBee reset - low = reset */ + gpio_direction_output(ZIGBEE_RST_GPIO, 0); + + /* BidCos reset - low = reset */ + /*gpio_direction_output(BIDCOS_RST_GPIO, 0);*/ + +#if !defined(CONFIG_B_SAMPLE) + /* Z-Wave reset - low = reset */ + gpio_direction_output(Z_WAVE_RST_GPIO, 0); +#endif + + /* EnOcean reset - high = reset*/ + gpio_direction_output(ENOC_RST_GPIO, 1); +} + +/* + * Function to set the LEDs in the state "Bootloader booting" + */ +static void __maybe_unused leds_set_booting(void) +{ +#if defined(CONFIG_B_SAMPLE) + + /* Turn all red LEDs on */ + gpio_direction_output(LED_PWR_RD_GPIO, 1); + gpio_direction_output(LED_CONN_RD_GPIO, 1); + +#else /* All other SHCs starting with B2-Sample */ + /* Set the PWM GPIO */ + gpio_direction_output(LED_PWM_GPIO, 1); + /* Turn all red LEDs on */ + gpio_direction_output(LED_PWR_RD_GPIO, 1); + gpio_direction_output(LED_LAN_RD_GPIO, 1); + gpio_direction_output(LED_CLOUD_RD_GPIO, 1); + +#endif +} + +/* + * Function to set the LEDs in the state "Bootloader error" + */ +static void leds_set_failure(int state) +{ +#if defined(CONFIG_B_SAMPLE) + /* Turn all blue and green LEDs off */ + gpio_set_value(LED_PWR_BL_GPIO, 0); + gpio_set_value(LED_PWR_GN_GPIO, 0); + gpio_set_value(LED_CONN_BL_GPIO, 0); + gpio_set_value(LED_CONN_GN_GPIO, 0); + + /* Turn all red LEDs to 'state' */ + gpio_set_value(LED_PWR_RD_GPIO, state); + gpio_set_value(LED_CONN_RD_GPIO, state); + +#else /* All other SHCs starting with B2-Sample */ + /* Set the PWM GPIO */ + gpio_direction_output(LED_PWM_GPIO, 1); + + /* Turn all blue LEDs off */ + gpio_set_value(LED_PWR_BL_GPIO, 0); + gpio_set_value(LED_LAN_BL_GPIO, 0); + gpio_set_value(LED_CLOUD_BL_GPIO, 0); + + /* Turn all red LEDs to 'state' */ + gpio_set_value(LED_PWR_RD_GPIO, state); + gpio_set_value(LED_LAN_RD_GPIO, state); + gpio_set_value(LED_CLOUD_RD_GPIO, state); +#endif +} + +/* + * Function to set the LEDs in the state "Bootloader finished" + */ +static void leds_set_finish(void) +{ +#if defined(CONFIG_B_SAMPLE) + /* Turn all LEDs off */ + gpio_set_value(LED_PWR_BL_GPIO, 0); + gpio_set_value(LED_PWR_RD_GPIO, 0); + gpio_set_value(LED_PWR_GN_GPIO, 0); + gpio_set_value(LED_CONN_BL_GPIO, 0); + gpio_set_value(LED_CONN_RD_GPIO, 0); + gpio_set_value(LED_CONN_GN_GPIO, 0); +#else /* All other SHCs starting with B2-Sample */ + /* Turn all LEDs off */ + gpio_set_value(LED_PWR_BL_GPIO, 0); + gpio_set_value(LED_PWR_RD_GPIO, 0); + gpio_set_value(LED_LAN_BL_GPIO, 0); + gpio_set_value(LED_LAN_RD_GPIO, 0); + gpio_set_value(LED_CLOUD_BL_GPIO, 0); + gpio_set_value(LED_CLOUD_RD_GPIO, 0); + + /* Turn off the PWM GPIO and mux it to EHRPWM */ + gpio_set_value(LED_PWM_GPIO, 0); + enable_shc_board_pwm_pin_mux(); +#endif +} + +static void check_button_status(void) +{ + ulong value; + gpio_direction_input(FRONT_BUTTON_GPIO); + value = gpio_get_value(FRONT_BUTTON_GPIO); + + if (value == 0) { + printf("front button activated !\n"); + setenv("harakiri", "1"); + } +} + +#ifndef CONFIG_SKIP_LOWLEVEL_INIT +#ifdef CONFIG_SPL_OS_BOOT +int spl_start_uboot(void) +{ + return 1; +} +#endif + +static void shc_board_early_init(void) +{ + shc_request_gpio(); +# ifdef CONFIG_SHC_ICT + /* Force all modules into enabled state for ICT testing */ + force_modules_running(); +# else + /* Force all modules to enter Reset state until released by the OS */ + force_modules_reset(); +# endif + leds_set_booting(); +} + +#define MPU_SPREADING_PERMILLE 18 /* Spread 1.8 percent */ +#define OSC (V_OSCK/1000000) +/* Bosch: Predivider must be fixed to 4, so N = 4-1 */ +#define MPUPLL_N (4-1) +/* Bosch: Fref = 24 MHz / (N+1) = 24 MHz / 4 = 6 MHz */ +#define MPUPLL_FREF (OSC / (MPUPLL_N + 1)) + +const struct dpll_params dpll_ddr_shc = { + 400, OSC-1, 1, -1, -1, -1, -1}; + +const struct dpll_params *get_dpll_ddr_params(void) +{ + return &dpll_ddr_shc; +} + +/* + * As we enabled downspread SSC with 1.8%, the values needed to be corrected + * such that the 20% overshoot will not lead to too high frequencies. + * In all cases, this is achieved by subtracting one from M (6 MHz less). + * Example: 600 MHz CPU + * Step size: 24 MHz OSC, N = 4 (fix) --> Fref = 6 MHz + * 600 MHz - 6 MHz (1x Fref) = 594 MHz + * SSC: 594 MHz * 1.8% = 10.7 MHz SSC + * Overshoot: 10.7 MHz * 20 % = 2.2 MHz + * --> Fmax = 594 MHz + 2.2 MHz = 596.2 MHz, lower than 600 MHz --> OK! + */ +const struct dpll_params dpll_mpu_shc_opp100 = { + 99, MPUPLL_N, 1, -1, -1, -1, -1}; + +void am33xx_spl_board_init(void) +{ + int sil_rev; + int mpu_vdd; + + puts(BOARD_ID_STR); + + /* + * Set CORE Frequency to OPP100 + * Hint: DCDC3 (CORE) defaults to 1.100V (for OPP100) + */ + do_setup_dpll(&dpll_core_regs, &dpll_core_opp100); + + sil_rev = readl(&cdev->deviceid) >> 28; + if (sil_rev < 2) { + puts("We do not support Silicon Revisions below 2.0!\n"); + return; + } + + dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev); + if (i2c_probe(TPS65217_CHIP_PM)) + return; + + /* + * Retrieve the CPU max frequency by reading the efuse + * SHC-Default: 600 MHz + */ + switch (dpll_mpu_opp100.m) { + case MPUPLL_M_1000: + mpu_vdd = TPS65217_DCDC_VOLT_SEL_1325MV; + break; + case MPUPLL_M_800: + mpu_vdd = TPS65217_DCDC_VOLT_SEL_1275MV; + break; + case MPUPLL_M_720: + mpu_vdd = TPS65217_DCDC_VOLT_SEL_1200MV; + break; + case MPUPLL_M_600: + mpu_vdd = TPS65217_DCDC_VOLT_SEL_1100MV; + break; + case MPUPLL_M_300: + mpu_vdd = TPS65217_DCDC_VOLT_SEL_950MV; + break; + default: + puts("Cannot determine the frequency, failing!\n"); + return; + } + + if (tps65217_voltage_update(TPS65217_DEFDCDC2, mpu_vdd)) { + puts("tps65217_voltage_update failure\n"); + return; + } + + /* Set MPU Frequency to what we detected */ + printf("MPU reference clock runs at %d MHz\n", MPUPLL_FREF); + printf("Setting MPU clock to %d MHz\n", MPUPLL_FREF * + dpll_mpu_shc_opp100.m); + do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_shc_opp100); + + /* Enable Spread Spectrum for this freq to be clean on EMI side */ + set_mpu_spreadspectrum(MPU_SPREADING_PERMILLE); + + /* + * Using the default voltages for the PMIC (TPS65217D) + * LS1 = 1.8V (VDD_1V8) + * LS2 = 3.3V (VDD_3V3A) + * LDO1 = 1.8V (VIO and VRTC) + * LDO2 = 3.3V (VDD_3V3AUX) + */ + shc_board_early_init(); +} + +void set_uart_mux_conf(void) +{ + enable_uart0_pin_mux(); +} + +void set_mux_conf_regs(void) +{ + enable_shc_board_pin_mux(); +} + +const struct ctrl_ioregs ioregs_evmsk = { + .cm0ioctl = MT41K256M16HA125E_IOCTRL_VALUE, + .cm1ioctl = MT41K256M16HA125E_IOCTRL_VALUE, + .cm2ioctl = MT41K256M16HA125E_IOCTRL_VALUE, + .dt0ioctl = MT41K256M16HA125E_IOCTRL_VALUE, + .dt1ioctl = MT41K256M16HA125E_IOCTRL_VALUE, +}; + +static const struct ddr_data ddr3_shc_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_shc_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_shc_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 | + PHY_EN_DYN_PWRDN, +}; + +void sdram_init(void) +{ + /* Configure the DDR3 RAM */ + config_ddr(400, &ioregs_evmsk, &ddr3_shc_data, + &ddr3_shc_cmd_ctrl_data, &ddr3_shc_emif_reg_data, 0); +} +#endif + +/* + * Basic board specific setup. Pinmux has been handled already. + */ +int board_init(void) +{ +#if defined(CONFIG_HW_WATCHDOG) + hw_watchdog_init(); +#endif + i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); + if (read_eeprom() < 0) + puts("EEPROM Content Invalid.\n"); + + gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; +#if defined(CONFIG_NOR) || defined(CONFIG_NAND) + gpmc_init(); +#endif + shc_request_gpio(); + + return 0; +} + +#ifdef CONFIG_BOARD_LATE_INIT +int board_late_init(void) +{ + check_button_status(); +#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG + if (shc_eeprom_valid) + if (is_valid_ethaddr(header.mac_addr)) + eth_setenv_enetaddr("ethaddr", header.mac_addr); +#endif + + return 0; +} +#endif + +#ifndef CONFIG_DM_ETH +#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \ + (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD)) +static void cpsw_control(int enabled) +{ + /* VTP can be added here */ + + return; +} + +static struct cpsw_slave_data cpsw_slaves[] = { + { + .slave_reg_ofs = 0x208, + .sliver_reg_ofs = 0xd80, + .phy_addr = 0, + }, + { + .slave_reg_ofs = 0x308, + .sliver_reg_ofs = 0xdc0, + .phy_addr = 1, + }, +}; + +static struct cpsw_platform_data cpsw_data = { + .mdio_base = CPSW_MDIO_BASE, + .cpsw_base = CPSW_BASE, + .mdio_div = 0xff, + .channels = 8, + .cpdma_reg_ofs = 0x800, + .slaves = 1, + .slave_data = cpsw_slaves, + .ale_reg_ofs = 0xd00, + .ale_entries = 1024, + .host_port_reg_ofs = 0x108, + .hw_stats_reg_ofs = 0x900, + .bd_ram_ofs = 0x2000, + .mac_control = (1 << 5), + .control = cpsw_control, + .host_port_num = 0, + .version = CPSW_CTRL_VERSION_2, +}; +#endif + +/* + * This function will: + * Read the eFuse for MAC addresses, and set ethaddr/eth1addr/usbnet_devaddr + * in the environment + * Perform fixups to the PHY present on certain boards. We only need this + * function in: + * - SPL with either CPSW or USB ethernet support + * - Full U-Boot, with either CPSW or USB ethernet + * Build in only these cases to avoid warnings about unused variables + * when we build an SPL that has neither option but full U-Boot will. + */ +#if ((defined(CONFIG_SPL_ETH_SUPPORT) || \ + defined(CONFIG_SPL_USBETH_SUPPORT)) && \ + defined(CONFIG_SPL_BUILD)) || \ + ((defined(CONFIG_DRIVER_TI_CPSW) || \ + defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET)) && \ + !defined(CONFIG_SPL_BUILD)) +int board_eth_init(bd_t *bis) +{ + int rv, n = 0; + uint8_t mac_addr[6]; + uint32_t mac_hi, mac_lo; + + /* try reading mac address from efuse */ + mac_lo = readl(&cdev->macid0l); + mac_hi = readl(&cdev->macid0h); + mac_addr[0] = mac_hi & 0xFF; + mac_addr[1] = (mac_hi & 0xFF00) >> 8; + mac_addr[2] = (mac_hi & 0xFF0000) >> 16; + mac_addr[3] = (mac_hi & 0xFF000000) >> 24; + mac_addr[4] = mac_lo & 0xFF; + mac_addr[5] = (mac_lo & 0xFF00) >> 8; + +#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \ + (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD)) + if (!getenv("ethaddr")) { + printf("<ethaddr> not set. Validating first E-fuse MAC\n"); + + if (is_valid_ethaddr(mac_addr)) + eth_setenv_enetaddr("ethaddr", mac_addr); + } + + writel(MII_MODE_ENABLE, &cdev->miisel); + cpsw_slaves[0].phy_if = PHY_INTERFACE_MODE_MII; + cpsw_slaves[1].phy_if = cpsw_slaves[0].phy_if; + rv = cpsw_register(&cpsw_data); + if (rv < 0) + printf("Error %d registering CPSW switch\n", rv); + else + n += rv; +#endif + +#if defined(CONFIG_USB_ETHER) && \ + (!defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_USBETH_SUPPORT)) + if (is_valid_ethaddr(mac_addr)) + eth_setenv_enetaddr("usbnet_devaddr", mac_addr); + + rv = usb_eth_initialize(bis); + if (rv < 0) + printf("Error %d registering USB_ETHER\n", rv); + else + n += rv; +#endif + return n; +} +#endif + +#endif /* CONFIG_DM_ETH */ + +#ifdef CONFIG_SHOW_BOOT_PROGRESS +static void bosch_check_reset_pin(void) +{ + if (readl(GPIO1_BASE + OMAP_GPIO_IRQSTATUS_SET_0) & RESET_MASK) { + printf("Resetting ...\n"); + writel(RESET_MASK, GPIO1_BASE + OMAP_GPIO_IRQSTATUS_SET_0); + disable_interrupts(); + reset_cpu(0); + /*NOTREACHED*/ + } +} + +static void hang_bosch(const char *cause, int code) +{ + int lv; + + gpio_direction_input(RESET_GPIO); + + /* Enable reset pin interrupt on falling edge */ + writel(RESET_MASK, GPIO1_BASE + OMAP_GPIO_IRQSTATUS_SET_0); + writel(RESET_MASK, GPIO1_BASE + OMAP_GPIO_FALLINGDETECT); + enable_interrupts(); + + puts(cause); + for (;;) { + for (lv = 0; lv < code; lv++) { + bosch_check_reset_pin(); + leds_set_failure(1); + __udelay(150 * 1000); + leds_set_failure(0); + __udelay(150 * 1000); + } +#if defined(BLINK_CODE) + __udelay(300 * 1000); +#endif + } +} + +void show_boot_progress(int val) +{ + switch (val) { + case BOOTSTAGE_ID_NEED_RESET: + hang_bosch("need reset", 4); + break; + } +} +#endif + +void arch_preboot_os(void) +{ + leds_set_finish(); +} + +#if defined(CONFIG_GENERIC_MMC) +int board_mmc_init(bd_t *bis) +{ + int ret; + + /* Bosch: Do not enable 52MHz for eMMC device to avoid EMI */ + ret = omap_mmc_init(0, MMC_MODE_HS_52MHz, 26000000, -1, -1); + if (ret) + return ret; + + ret = omap_mmc_init(1, MMC_MODE_HS_52MHz, 26000000, -1, -1); + return ret; +} +#endif |
