// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2016 David Lechner * * Based on da850evm.c * * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ * * Based on da830evm.c. Original Copyrights follow: * * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. * Copyright (C) 2007 Sergey Kubushyn */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include DECLARE_GLOBAL_DATA_PTR; #define EEPROM_I2C_ADDR 0x50 #define EEPROM_REV_OFFSET 0x3F00 #define EEPROM_BDADDR_OFFSET 0x3F06 const struct pinmux_resource pinmuxes[] = { PINMUX_ITEM(spi0_pins_base), PINMUX_ITEM(spi0_pins_scs0), PINMUX_ITEM(uart1_pins_txrx), PINMUX_ITEM(i2c0_pins), PINMUX_ITEM(mmc0_pins), }; const int pinmuxes_size = ARRAY_SIZE(pinmuxes); const struct lpsc_resource lpsc[] = { { DAVINCI_LPSC_SPI0 }, /* Serial Flash */ { DAVINCI_LPSC_UART1 }, /* console */ { DAVINCI_LPSC_MMC_SD }, }; const int lpsc_size = ARRAY_SIZE(lpsc); /* * The Bluetooth address serves as the board serial number. */ static void setup_serial_number(void) { u32 offset; char serial_number[13]; u8 buf[6]; u8 eeprom_rev; if (env_get("serial#")) return; if (i2c_read(EEPROM_I2C_ADDR, EEPROM_REV_OFFSET, 2, buf, 2)) { printf("\nEEPROM revision read failed!\n"); return; } /* * EEPROM rev 3 has Bluetooth address at EEPROM_REV_OFFSET. * Other revisions have checksum at EEPROM_REV_OFFSET+1 * to detect this. */ if ((buf[0] ^ buf[1]) == 0xFF) eeprom_rev = buf[0]; else eeprom_rev = 3; /* EEPROM rev 3 has Bluetooth address where rev should be */ offset = (eeprom_rev == 3) ? EEPROM_REV_OFFSET : EEPROM_BDADDR_OFFSET; if (i2c_read(EEPROM_I2C_ADDR, offset, 2, buf, 6)) { printf("\nEEPROM serial read failed!\n"); return; } sprintf(serial_number, "%02X%02X%02X%02X%02X%02X", buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]); env_set("serial#", serial_number); } int board_early_init_f(void) { /* enable the console UART */ writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST | DAVINCI_UART_PWREMU_MGMT_UTRST), &davinci_uart1_ctrl_regs->pwremu_mgmt); /* * Power on required peripherals * ARM does not have access by default to PSC0 and PSC1 * assuming here that the DSP bootloader has set the IOPU * such that PSC access is available to ARM */ if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc))) return 1; return 0; } int board_init(void) { irq_init(); /* arch number of the board */ /* LEGO didn't register for a unique number and uses da850evm */ gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_EVM; /* address of boot parameters */ gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR; /* setup the SUSPSRC for ARM to control emulation suspend */ writel(readl(&davinci_syscfg_regs->suspsrc) & ~(DAVINCI_SYSCFG_SUSPSRC_I2C | DAVINCI_SYSCFG_SUSPSRC_SPI0 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 | DAVINCI_SYSCFG_SUSPSRC_UART1), &davinci_syscfg_regs->suspsrc); /* configure pinmux settings */ if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes))) return 1; return 0; } int board_late_init(void) { setup_serial_number(); return 0; }