/* * (C) Copyright 2008 * Texas Instruments, * Raghavendra KH * * 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 */ /** * @file * @brief Beagle Specific Board Initialization routines */ /** * @page ti_beagle Texas Instruments Beagle Board * * FileName: board/omap/board-beagle.c * * Beagle Board from Texas Instruments as described here: * http://www.beagleboard.org * * This board is based on OMAP3530. * More on OMAP3530 (including documentation can be found here): * http://focus.ti.com/docs/prod/folders/print/omap3530.html * * This file provides initialization in two stages: * @li boot time initialization - do basics required to get SDRAM working. * This is run from SRAM - so no case constructs and global vars can be used. * @li run time initialization - this is for the rest of the initializations * such as flash, uart etc. * * Boot time initialization includes: * @li SDRAM initialization. * @li Pin Muxing relevant for Beagle. * * Run time initialization includes * @li serial @ref serial_ns16550.c driver device definition * * Originally from board/omap/board-sdp343x.c */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "board.h" /******************** Board Boot Time *******************/ /** * @brief Do the SDRC initialization for 128Meg Micron DDR for CS0 * * @return void */ static void sdrc_init(void) { /* SDRAM software reset */ /* No idle ack and RESET enable */ writel(0x1A, SDRC_REG(SYSCONFIG)); sdelay(100); /* No idle ack and RESET disable */ writel(0x18, SDRC_REG(SYSCONFIG)); /* SDRC Sharing register */ /* 32-bit SDRAM on data lane [31:0] - CS0 */ /* pin tri-stated = 1 */ writel(0x00000100, SDRC_REG(SHARING)); /* ----- SDRC Registers Configuration --------- */ /* SDRC_MCFG0 register */ writel(0x02584099, SDRC_REG(MCFG_0)); /* SDRC_RFR_CTRL0 register */ writel(0x54601, SDRC_REG(RFR_CTRL_0)); /* SDRC_ACTIM_CTRLA0 register */ writel(0xA29DB4C6, SDRC_REG(ACTIM_CTRLA_0)); /* SDRC_ACTIM_CTRLB0 register */ writel(0x12214, SDRC_REG(ACTIM_CTRLB_0)); /* Disble Power Down of CKE due to 1 CKE on combo part */ writel(0x00000081, SDRC_REG(POWER)); /* SDRC_MANUAL command register */ /* NOP command */ writel(0x00000000, SDRC_REG(MANUAL_0)); /* Precharge command */ writel(0x00000001, SDRC_REG(MANUAL_0)); /* Auto-refresh command */ writel(0x00000002, SDRC_REG(MANUAL_0)); /* Auto-refresh command */ writel(0x00000002, SDRC_REG(MANUAL_0)); /* SDRC MR0 register Burst length=4 */ writel(0x00000032, SDRC_REG(MR_0)); /* SDRC DLLA control register */ writel(0x0000000A, SDRC_REG(DLLA_CTRL)); return; } /** * @brief Do the pin muxing required for Board operation. * We enable ONLY the pins we require to set. OMAP provides pins which do not * have alternate modes. Such pins done need to be set. * * See @ref MUX_VAL for description of the muxing mode. * * @return void */ static void mux_config(void) { /* SDRC_D0 - SDRC_D31 default mux mode is mode0 */ /* GPMC */ MUX_VAL(CP(GPMC_A1), (IDIS | PTD | DIS | M0)); MUX_VAL(CP(GPMC_A2), (IDIS | PTD | DIS | M0)); MUX_VAL(CP(GPMC_A3), (IDIS | PTD | DIS | M0)); MUX_VAL(CP(GPMC_A4), (IDIS | PTD | DIS | M0)); MUX_VAL(CP(GPMC_A5), (IDIS | PTD | DIS | M0)); MUX_VAL(CP(GPMC_A6), (IDIS | PTD | DIS | M0)); MUX_VAL(CP(GPMC_A7), (IDIS | PTD | DIS | M0)); MUX_VAL(CP(GPMC_A8), (IDIS | PTD | DIS | M0)); MUX_VAL(CP(GPMC_A9), (IDIS | PTD | DIS | M0)); MUX_VAL(CP(GPMC_A10), (IDIS | PTD | DIS | M0)); /* D0-D7 default mux mode is mode0 */ MUX_VAL(CP(GPMC_D8), (IEN | PTD | DIS | M0)); MUX_VAL(CP(GPMC_D9), (IEN | PTD | DIS | M0)); MUX_VAL(CP(GPMC_D10), (IEN | PTD | DIS | M0)); MUX_VAL(CP(GPMC_D11), (IEN | PTD | DIS | M0)); MUX_VAL(CP(GPMC_D12), (IEN | PTD | DIS | M0)); MUX_VAL(CP(GPMC_D13), (IEN | PTD | DIS | M0)); MUX_VAL(CP(GPMC_D14), (IEN | PTD | DIS | M0)); MUX_VAL(CP(GPMC_D15), (IEN | PTD | DIS | M0)); MUX_VAL(CP(GPMC_CLK), (IDIS | PTD | DIS | M0)); /* GPMC_NADV_ALE default mux mode is mode0 */ /* GPMC_NOE default mux mode is mode0 */ /* GPMC_NWE default mux mode is mode0 */ /* GPMC_NBE0_CLE default mux mode is mode0 */ MUX_VAL(CP(GPMC_NBE0_CLE), (IDIS | PTD | DIS | M0)); MUX_VAL(CP(GPMC_NBE1), (IEN | PTD | DIS | M0)); MUX_VAL(CP(GPMC_NWP), (IEN | PTD | DIS | M0)); /* GPMC_WAIT0 default mux mode is mode0 */ MUX_VAL(CP(GPMC_WAIT1), (IEN | PTU | EN | M0)); /* SERIAL INTERFACE */ MUX_VAL(CP(UART3_CTS_RCTX), (IEN | PTD | EN | M0)); MUX_VAL(CP(UART3_RTS_SD), (IDIS | PTD | DIS | M0)); MUX_VAL(CP(UART3_RX_IRRX), (IEN | PTD | DIS | M0)); MUX_VAL(CP(UART3_TX_IRTX), (IDIS | PTD | DIS | M0)); MUX_VAL(CP(HSUSB0_CLK), (IEN | PTD | DIS | M0)); MUX_VAL(CP(HSUSB0_STP), (IDIS | PTU | EN | M0)); MUX_VAL(CP(HSUSB0_DIR), (IEN | PTD | DIS | M0)); MUX_VAL(CP(HSUSB0_NXT), (IEN | PTD | DIS | M0)); MUX_VAL(CP(HSUSB0_DATA0), (IEN | PTD | DIS | M0)); MUX_VAL(CP(HSUSB0_DATA1), (IEN | PTD | DIS | M0)); MUX_VAL(CP(HSUSB0_DATA2), (IEN | PTD | DIS | M0)); MUX_VAL(CP(HSUSB0_DATA3), (IEN | PTD | DIS | M0)); MUX_VAL(CP(HSUSB0_DATA4), (IEN | PTD | DIS | M0)); MUX_VAL(CP(HSUSB0_DATA5), (IEN | PTD | DIS | M0)); MUX_VAL(CP(HSUSB0_DATA6), (IEN | PTD | DIS | M0)); MUX_VAL(CP(HSUSB0_DATA7), (IEN | PTD | DIS | M0)); /* I2C1_SCL default mux mode is mode0 */ /* I2C1_SDA default mux mode is mode0 */ } /** * @brief The basic entry point for board initialization. * * This is called as part of machine init (after arch init). * This is again called with stack in SRAM, so not too many * constructs possible here. * * @return void */ void board_init(void) { int in_sdram = running_in_sdram(); mux_config(); /* Dont reconfigure SDRAM while running in SDRAM! */ if (!in_sdram) sdrc_init(); } /******************** Board Run Time *******************/ #ifdef CONFIG_DRIVER_SERIAL_NS16550 static struct NS16550_plat serial_plat = { .clock = 48000000, /* 48MHz (APLL96/2) */ .f_caps = CONSOLE_STDIN | CONSOLE_STDOUT | CONSOLE_STDERR, .reg_read = omap_uart_read, .reg_write = omap_uart_write, }; static struct device_d beagle_serial_device = { .name = "serial_ns16550", .map_base = OMAP_UART3_BASE, .size = 1024, .platform_data = (void *)&serial_plat, }; /** * @brief UART serial port initialization - remember to enable COM clocks in * arch * * @return result of device registration */ static int beagle_console_init(void) { /* Register the serial port */ return register_device(&beagle_serial_device); } console_initcall(beagle_console_init); #endif /* CONFIG_DRIVER_SERIAL_NS16550 */ static struct memory_platform_data sram_pdata = { .name = "ram0", .flags = DEVFS_RDWR, }; static struct device_d sdram_dev = { .name = "mem", .map_base = 0x80000000, .size = 128 * 1024 * 1024, .platform_data = &sram_pdata, }; static int beagle_devices_init(void) { int ret; ret = register_device(&sdram_dev); if (ret) goto failed; #ifdef CONFIG_GPMC /* WP is made high and WAIT1 active Low */ gpmc_generic_init(0x10); #endif gpmc_generic_nand_devices_init(0, 16, 1); armlinux_add_dram(&sdram_dev); failed: return ret; } device_initcall(beagle_devices_init);