diff options
Diffstat (limited to 'board/davinci/da830evm/da830evm.c')
| -rw-r--r-- | board/davinci/da830evm/da830evm.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/board/davinci/da830evm/da830evm.c b/board/davinci/da830evm/da830evm.c new file mode 100644 index 0000000..bb8cc3c --- /dev/null +++ b/board/davinci/da830evm/da830evm.c @@ -0,0 +1,127 @@ +/* + * 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 <asm/arch/hardware.h> +#include <asm/io.h> +#include "../common/misc.h" + +DECLARE_GLOBAL_DATA_PTR; + +#define pinmux &davinci_syscfg_regs->pinmux + +#ifdef CONFIG_SPI_FLASH +/* SPI0 pin muxer settings */ +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 } +}; +#endif + +/* UART pin muxer settings */ +const struct pinmux_config uart_pins[] = { + { pinmux[8], 2, 7 }, + { pinmux[9], 2, 0 } +}; + +/* I2C pin muxer settings */ +const struct pinmux_config i2c_pins[] = { + { pinmux[9], 2, 3 }, + { pinmux[9], 2, 4 } +}; + +int board_init(void) +{ +#ifndef CONFIG_USE_IRQ + /* + * Mask all IRQs by clearing the global enable and setting + * the enable clear for all the 90 interrupts. + */ + + writel(0, &davinci_aintc_regs->ger); + + writel(0, &davinci_aintc_regs->hier); + + writel(0xffffffff, &davinci_aintc_regs->ecr1); + writel(0xffffffff, &davinci_aintc_regs->ecr2); + writel(0xffffffff, &davinci_aintc_regs->ecr3); +#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 + */ + lpsc_on(DAVINCI_LPSC_AEMIF); /* NAND, NOR */ + lpsc_on(DAVINCI_LPSC_SPI0); /* Serial Flash */ + lpsc_on(DAVINCI_LPSC_EMAC); /* image download */ + lpsc_on(DAVINCI_LPSC_UART2); /* console */ + lpsc_on(DAVINCI_LPSC_GPIO); + + /* 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); + +#ifdef CONFIG_SPI_FLASH + if (davinci_configure_pin_mux(spi0_pins, ARRAY_SIZE(spi0_pins)) != 0) + return 1; +#endif + + if (davinci_configure_pin_mux(uart_pins, ARRAY_SIZE(uart_pins)) != 0) + return 1; + + if (davinci_configure_pin_mux(i2c_pins, ARRAY_SIZE(i2c_pins)) != 0) + 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); +} |