From 649a33e434ba743d500db6c1aef3a0937eb32c8d Mon Sep 17 00:00:00 2001 From: Stefano Babic Date: Tue, 30 Nov 2010 11:46:56 -0500 Subject: Davinci: add support for the ea20 board This board uses the OMAP-L138 SOM stacked on a custom baseboard. It supports SPI Flash, Ethernet with RMII. Signed-off-by: Stefano Babic Signed-off-by: Ben Gardiner Signed-off-by: Sandeep Paulraj --- board/davinci/ea20/Makefile | 53 ++++++++++++ board/davinci/ea20/ea20.c | 196 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 249 insertions(+) create mode 100644 board/davinci/ea20/Makefile create mode 100644 board/davinci/ea20/ea20.c (limited to 'board/davinci/ea20') diff --git a/board/davinci/ea20/Makefile b/board/davinci/ea20/Makefile new file mode 100644 index 0000000..ddd2564 --- /dev/null +++ b/board/davinci/ea20/Makefile @@ -0,0 +1,53 @@ +# +# (C) Copyright 2000, 2001, 2002 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# Copyright (C) 2007 Sergey Kubushyn +# +# See file CREDITS for list of people who contributed to this +# project. +# +# 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., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +include $(TOPDIR)/config.mk + +LIB = $(obj)lib$(BOARD).a + +COBJS-y += ea20.o + +COBJS := $(COBJS-y) + +SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS)) +SOBJS := $(addprefix $(obj),$(SOBJS)) + +$(LIB): $(obj).depend $(OBJS) $(SOBJS) + $(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS) + +clean: + rm -f $(SOBJS) $(OBJS) + +distclean: clean + rm -f $(LIB) core *.bak *~ .depend + +######################################################################### +# This is for $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/board/davinci/ea20/ea20.c b/board/davinci/ea20/ea20.c new file mode 100644 index 0000000..9d0f71b --- /dev/null +++ b/board/davinci/ea20/ea20.c @@ -0,0 +1,196 @@ +/* + * (C) Copyright 2010 + * Stefano Babic, DENX Software Engineering, sbabic@denx.de + * + * Based on da850evm.c, original Copyrights follow: + * + * 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 + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +#define pinmux(x) (&davinci_syscfg_regs->pinmux[x]) + +/* SPI0 pin muxer settings */ +static const struct pinmux_config spi1_pins[] = { + { pinmux(5), 1, 1 }, + { pinmux(5), 1, 2 }, + { pinmux(5), 1, 4 }, + { pinmux(5), 1, 5 } +}; + +/* UART pin muxer settings */ +static const struct pinmux_config uart_pins[] = { + { pinmux(0), 4, 6 }, + { pinmux(0), 4, 7 }, + { pinmux(4), 2, 4 }, + { pinmux(4), 2, 5 } +}; + +#ifdef CONFIG_DRIVER_TI_EMAC +#define HAS_RMII 1 +static const struct pinmux_config emac_pins[] = { + { pinmux(14), 8, 2 }, + { pinmux(14), 8, 3 }, + { pinmux(14), 8, 4 }, + { pinmux(14), 8, 5 }, + { pinmux(14), 8, 6 }, + { pinmux(14), 8, 7 }, + { pinmux(15), 8, 1 }, + { pinmux(4), 8, 0 }, + { pinmux(4), 8, 1 } +}; +#endif + +#ifdef CONFIG_NAND_DAVINCI +const struct pinmux_config nand_pins[] = { + { pinmux(7), 1, 1 }, + { pinmux(7), 1, 2 }, + { pinmux(7), 1, 4 }, + { pinmux(7), 1, 5 }, + { pinmux(9), 1, 0 }, + { pinmux(9), 1, 1 }, + { pinmux(9), 1, 2 }, + { pinmux(9), 1, 3 }, + { pinmux(9), 1, 4 }, + { pinmux(9), 1, 5 }, + { pinmux(9), 1, 6 }, + { pinmux(9), 1, 7 }, + { pinmux(12), 1, 5 }, + { pinmux(12), 1, 6 } +}; +#endif + +static const struct pinmux_resource pinmuxes[] = { +#ifdef CONFIG_SPI_FLASH + PINMUX_ITEM(spi1_pins), +#endif + PINMUX_ITEM(uart_pins), +#ifdef CONFIG_NAND_DAVINCI + PINMUX_ITEM(nand_pins), +#endif +}; + +static const struct lpsc_resource lpsc[] = { + { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */ + { DAVINCI_LPSC_SPI1 }, /* 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 + /* + * NAND CS setup - cycle counts based on da850evm NAND timings in the + * Linux kernel @ 25MHz EMIFA + */ + writel((DAVINCI_ABCR_WSETUP(0) | + DAVINCI_ABCR_WSTROBE(0) | + DAVINCI_ABCR_WHOLD(0) | + DAVINCI_ABCR_RSETUP(0) | + DAVINCI_ABCR_RSTROBE(1) | + DAVINCI_ABCR_RHOLD(0) | + DAVINCI_ABCR_TA(0) | + DAVINCI_ABCR_ASIZE_8BIT), + &davinci_emif_regs->ab2cr); /* CS3 */ +#endif + + /* arch number of the board */ + gd->bd->bi_arch_number = MACH_TYPE_EA20; + + /* 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_SPI1 | 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; + +#ifdef CONFIG_DRIVER_TI_EMAC + if (davinci_configure_pin_mux(emac_pins, ARRAY_SIZE(emac_pins)) != 0) + return 1; + + davinci_emac_mii_mode_sel(HAS_RMII); +#endif /* CONFIG_DRIVER_TI_EMAC */ + + /* 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; +} + +#ifdef CONFIG_DRIVER_TI_EMAC + +/* + * Initializes on-board ethernet controllers. + */ +int board_eth_init(bd_t *bis) +{ + if (!davinci_emac_initialize()) { + printf("Error: Ethernet init failed!\n"); + return -1; + } + + /* + * This board has a RMII PHY. However, the MDC line on the SOM + * must not be disabled (there is no MII PHY on the + * baseboard) via the GPIO2[6], because this pin + * disables at the same time the SPI flash. + */ + + return 0; +} +#endif /* CONFIG_DRIVER_TI_EMAC */ -- cgit v1.1