/* * board.c * * Board functions for Phytec phyCORE-AM335x (pcm051) based boards * * Copyright (C) 2013 Lemonage Software GmbH * Author Lars Poeschel * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR /PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "board.h" DECLARE_GLOBAL_DATA_PTR; static struct wd_timer *wdtimer = (struct wd_timer *)WDT_BASE; #ifdef CONFIG_SPL_BUILD static struct uart_sys *uart_base = (struct uart_sys *)DEFAULT_UART_BASE; #endif /* MII mode defines */ #define MII_MODE_ENABLE 0x0 #define RGMII_MODE_ENABLE 0xA #define RMII_RGMII2_MODE_ENABLE 0x49 static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE; /* UART defines */ #ifdef CONFIG_SPL_BUILD #define UART_RESET (0x1 << 1) #define UART_CLK_RUNNING_MASK 0x1 #define UART_SMART_IDLE_EN (0x1 << 0x3) /* DDR RAM defines */ #define DDR_CLK_MHZ 303 /* DDR_DPLL_MULT value */ static void rtc32k_enable(void) { struct rtc_regs *rtc = (struct rtc_regs *)RTC_BASE; /* * Unlock the RTC's registers. For more details please see the * RTC_SS section of the TRM. In order to unlock we need to * write these specific values (keys) in this order. */ writel(0x83e70b13, &rtc->kick0r); writel(0x95a4f1e0, &rtc->kick1r); /* Enable the RTC 32K OSC by setting bits 3 and 6. */ writel((1 << 3) | (1 << 6), &rtc->osc); } static const struct ddr_data ddr3_data = { .datardsratio0 = MT41J256M8HX15E_RD_DQS, .datawdsratio0 = MT41J256M8HX15E_WR_DQS, .datafwsratio0 = MT41J256M8HX15E_PHY_FIFO_WE, .datawrsratio0 = MT41J256M8HX15E_PHY_WR_DATA, .datadldiff0 = PHY_DLL_LOCK_DIFF, }; static const struct cmd_control ddr3_cmd_ctrl_data = { .cmd0csratio = MT41J256M8HX15E_RATIO, .cmd0dldiff = MT41J256M8HX15E_DLL_LOCK_DIFF, .cmd0iclkout = MT41J256M8HX15E_INVERT_CLKOUT, .cmd1csratio = MT41J256M8HX15E_RATIO, .cmd1dldiff = MT41J256M8HX15E_DLL_LOCK_DIFF, .cmd1iclkout = MT41J256M8HX15E_INVERT_CLKOUT, .cmd2csratio = MT41J256M8HX15E_RATIO, .cmd2dldiff = MT41J256M8HX15E_DLL_LOCK_DIFF, .cmd2iclkout = MT41J256M8HX15E_INVERT_CLKOUT, }; static struct emif_regs ddr3_emif_reg_data = { .sdram_config = MT41J256M8HX15E_EMIF_SDCFG, .ref_ctrl = MT41J256M8HX15E_EMIF_SDREF, .sdram_tim1 = MT41J256M8HX15E_EMIF_TIM1, .sdram_tim2 = MT41J256M8HX15E_EMIF_TIM2, .sdram_tim3 = MT41J256M8HX15E_EMIF_TIM3, .zq_config = MT41J256M8HX15E_ZQ_CFG, .emif_ddr_phy_ctlr_1 = MT41J256M8HX15E_EMIF_READ_LATENCY | PHY_EN_DYN_PWRDN, }; #endif /* * early system init of muxing and clocks. */ void s_init(void) { /* * WDT1 is already running when the bootloader gets control * Disable it to avoid "random" resets */ writel(0xAAAA, &wdtimer->wdtwspr); while (readl(&wdtimer->wdtwwps) != 0x0) ; writel(0x5555, &wdtimer->wdtwspr); while (readl(&wdtimer->wdtwwps) != 0x0) ; #ifdef CONFIG_SPL_BUILD /* Setup the PLLs and the clocks for the peripherals */ pll_init(); /* Enable RTC32K clock */ rtc32k_enable(); /* UART softreset */ u32 regval; enable_uart0_pin_mux(); regval = readl(&uart_base->uartsyscfg); regval |= UART_RESET; writel(regval, &uart_base->uartsyscfg); while ((readl(&uart_base->uartsyssts) & UART_CLK_RUNNING_MASK) != UART_CLK_RUNNING_MASK) ; /* Disable smart idle */ regval = readl(&uart_base->uartsyscfg); regval |= UART_SMART_IDLE_EN; writel(regval, &uart_base->uartsyscfg); gd = &gdata; preloader_console_init(); /* Initalize the board header */ enable_i2c0_pin_mux(); i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); enable_board_pin_mux(); config_ddr(DDR_CLK_MHZ, MT41J256M8HX15E_IOCTRL_VALUE, &ddr3_data, &ddr3_cmd_ctrl_data, &ddr3_emif_reg_data, 0); #endif } /* * Basic board specific setup. Pinmux has been handled already. */ int board_init(void) { i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); gd->bd->bi_boot_params = PHYS_DRAM_1 + 0x100; return 0; } #ifdef CONFIG_DRIVER_TI_CPSW 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_id = 0, .phy_if = PHY_INTERFACE_MODE_RGMII, }, { .slave_reg_ofs = 0x308, .sliver_reg_ofs = 0xdc0, .phy_id = 1, .phy_if = PHY_INTERFACE_MODE_RGMII, }, }; 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, .mac_control = (1 << 5), .control = cpsw_control, .host_port_num = 0, .version = CPSW_CTRL_VERSION_2, }; #endif #if defined(CONFIG_DRIVER_TI_CPSW) || \ (defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET)) int board_eth_init(bd_t *bis) { int rv, n = 0; #ifdef CONFIG_DRIVER_TI_CPSW uint8_t mac_addr[6]; uint32_t mac_hi, mac_lo; if (!eth_getenv_enetaddr("ethaddr", mac_addr)) { printf(" not set. Reading from E-fuse\n"); /* 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 (is_valid_ether_addr(mac_addr)) eth_setenv_enetaddr("ethaddr", mac_addr); else goto try_usbether; } writel(RMII_RGMII2_MODE_ENABLE, &cdev->miisel); rv = cpsw_register(&cpsw_data); if (rv < 0) printf("Error %d registering CPSW switch\n", rv); else n += rv; try_usbether: #endif #if defined(CONFIG_USB_ETHER) && !defined(CONFIG_SPL_BUILD) rv = usb_eth_initialize(bis); if (rv < 0) printf("Error %d registering USB_ETHER\n", rv); else n += rv; #endif return n; } #endif