diff options
Diffstat (limited to 'board/davinci/da8xxevm/da830evm.c')
| -rw-r--r-- | board/davinci/da8xxevm/da830evm.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/board/davinci/da8xxevm/da830evm.c b/board/davinci/da8xxevm/da830evm.c new file mode 100644 index 0000000..57506d6 --- /dev/null +++ b/board/davinci/da8xxevm/da830evm.c @@ -0,0 +1,227 @@ +/* + * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com> + * + * Base on code from TI. Original Notices follow: + * + * (C) Copyright 2008, Texas Instruments, Inc. http://www.ti.com/ + * + * Modified for DA8xx EVM. + * + * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net> + * + * Parts are shamelessly stolen from various TI sources, original copyright + * follows: + * ----------------------------------------------------------------- + * + * Copyright (C) 2004 Texas Instruments. + * + * ---------------------------------------------------------------------------- + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * ---------------------------------------------------------------------------- + */ + +#include <common.h> +#include <i2c.h> +#include <net.h> +#include <netdev.h> +#include <asm/arch/hardware.h> +#include <asm/arch/emif_defs.h> +#include <asm/arch/emac_defs.h> +#include <asm/io.h> +#include "../common/misc.h" +#include "common.h" + +DECLARE_GLOBAL_DATA_PTR; + +#define pinmux &davinci_syscfg_regs->pinmux + +/* SPI0 pin muxer settings */ +static const struct pinmux_config spi0_pins[] = { + { pinmux[7], 1, 3 }, + { pinmux[7], 1, 4 }, + { pinmux[7], 1, 5 }, + { pinmux[7], 1, 6 }, + { pinmux[7], 1, 7 } +}; + +/* EMIF-A bus pins for 8-bit NAND support on CS3 */ +static const struct pinmux_config emifa_nand_pins[] = { + { pinmux[13], 1, 6 }, + { pinmux[13], 1, 7 }, + { pinmux[14], 1, 0 }, + { pinmux[14], 1, 1 }, + { pinmux[14], 1, 2 }, + { pinmux[14], 1, 3 }, + { pinmux[14], 1, 4 }, + { pinmux[14], 1, 5 }, + { pinmux[15], 1, 7 }, + { pinmux[16], 1, 0 }, + { pinmux[18], 1, 1 }, + { pinmux[18], 1, 4 }, + { pinmux[18], 1, 5 }, +}; + +/* EMAC PHY interface pins */ +static const struct pinmux_config emac_pins[] = { + { pinmux[9], 0, 5 }, + { pinmux[10], 2, 1 }, + { pinmux[10], 2, 2 }, + { pinmux[10], 2, 3 }, + { pinmux[10], 2, 4 }, + { pinmux[10], 2, 5 }, + { pinmux[10], 2, 6 }, + { pinmux[10], 2, 7 }, + { pinmux[11], 2, 0 }, + { pinmux[11], 2, 1 }, +}; + +/* UART pin muxer settings */ +static const struct pinmux_config uart_pins[] = { + { pinmux[8], 2, 7 }, + { pinmux[9], 2, 0 } +}; + +/* I2C pin muxer settings */ +static const struct pinmux_config i2c_pins[] = { + { pinmux[8], 2, 3 }, + { pinmux[8], 2, 4 } +}; + +/* USB0_DRVVBUS pin muxer settings */ +static const struct pinmux_config usb_pins[] = { + { pinmux[9], 1, 1 } +}; + +static const struct pinmux_resource pinmuxes[] = { +#ifdef CONFIG_SPI_FLASH + PINMUX_ITEM(spi0_pins), +#endif + PINMUX_ITEM(uart_pins), + PINMUX_ITEM(i2c_pins), +#ifdef CONFIG_USB_DA8XX + PINMUX_ITEM(usb_pins), +#endif +#ifdef CONFIG_USE_NAND + PINMUX_ITEM(emifa_nand_pins), +#endif +#if defined(CONFIG_DRIVER_TI_EMAC) + PINMUX_ITEM(emac_pins), +#endif +}; + +static const struct lpsc_resource lpsc[] = { + { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */ + { DAVINCI_LPSC_SPI0 }, /* Serial Flash */ + { DAVINCI_LPSC_EMAC }, /* image download */ + { DAVINCI_LPSC_UART2 }, /* console */ + { DAVINCI_LPSC_GPIO }, +}; + +int board_init(void) +{ +#ifndef CONFIG_USE_IRQ + irq_init(); +#endif + +#ifdef CONFIG_NAND_DAVINCI + /* EMIFA 100MHz clock select */ + writel(readl(&davinci_syscfg_regs->cfgchip3) & ~2, + &davinci_syscfg_regs->cfgchip3); + /* NAND CS setup */ + writel((DAVINCI_ABCR_WSETUP(0) | + DAVINCI_ABCR_WSTROBE(2) | + DAVINCI_ABCR_WHOLD(0) | + DAVINCI_ABCR_RSETUP(0) | + DAVINCI_ABCR_RSTROBE(2) | + DAVINCI_ABCR_RHOLD(0) | + DAVINCI_ABCR_TA(2) | + DAVINCI_ABCR_ASIZE_8BIT), + &davinci_emif_regs->ab2cr); +#endif + + /* arch number of the board */ + gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA830_EVM; + + /* address of boot parameters */ + gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR; + + /* + * 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; + + /* setup the SUSPSRC for ARM to control emulation suspend */ + writel(readl(&davinci_syscfg_regs->suspsrc) & + ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C | + DAVINCI_SYSCFG_SUSPSRC_SPI0 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 | + DAVINCI_SYSCFG_SUSPSRC_UART2), + &davinci_syscfg_regs->suspsrc); + + /* configure pinmux settings */ + if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes))) + return 1; + + /* enable the console UART */ + writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST | + DAVINCI_UART_PWREMU_MGMT_UTRST), + &davinci_uart2_ctrl_regs->pwremu_mgmt); + + return(0); +} + +#if defined(CONFIG_DRIVER_TI_EMAC) + +#define PHY_SW_I2C_ADDR 0x5f /* Address of PHY on i2c bus */ + +/* + * Initializes on-board ethernet controllers. + */ +int board_eth_init(bd_t *bis) +{ + u_int8_t mac_addr[6]; + u_int8_t switch_start_cmd[2] = { 0x01, 0x23 }; + + /* Read Ethernet MAC address from EEPROM */ + if (dvevm_read_mac_address(mac_addr)) + /* set address env if not already set */ + dv_configure_mac_address(mac_addr); + + /* read the address back from env */ + if (!eth_getenv_enetaddr("ethaddr", mac_addr)) + return -1; + + /* provide the resulting addr to the driver */ + davinci_eth_set_mac_addr(mac_addr); + + /* enable the Ethernet switch in the 3 port PHY */ + if (i2c_write(PHY_SW_I2C_ADDR, 0, 0, + switch_start_cmd, sizeof(switch_start_cmd))) { + printf("Ethernet switch start failed!\n"); + return -1; + } + + /* finally, initialise the driver */ + if (!davinci_emac_initialize()) { + printf("Error: Ethernet init failed!\n"); + return -1; + } + + return 0; +} +#endif /* CONFIG_DRIVER_TI_EMAC */ |