/* * sbc8349.c -- WindRiver SBC8349 board support. * Copyright (c) 2006-2007 Wind River Systems, Inc. * * Paul Gortmaker <paul.gortmaker@windriver.com> * Based on board/mpc8349emds/mpc8349emds.c (and previous 834x releases.) * * 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 <common.h>#include <ioports.h>#include <mpc83xx.h>#include <asm/mpc8349_pci.h>#include <i2c.h>#include <spd_sdram.h>#include <miiphy.h>#if defined(CONFIG_OF_LIBFDT)#include <libfdt.h>#endifint fixed_sdram(void);void sdram_init(void);#if defined(CONFIG_DDR_ECC) && defined(CONFIG_MPC83XX)void ddr_enable_ecc(unsigned int dram_size);#endif#ifdef CONFIG_BOARD_EARLY_INIT_Fint board_early_init_f (void){	return 0;}#endif#define ns2clk(ns) (ns / (1000000000 / CONFIG_8349_CLKIN) + 1)phys_size_t initdram (int board_type){	volatile immap_t *im = (immap_t *)CFG_IMMR;	u32 msize = 0;	if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)		return -1;	/* DDR SDRAM - Main SODIMM */	im->sysconf.ddrlaw[0].bar = CFG_DDR_BASE & LAWBAR_BAR;#if defined(CONFIG_SPD_EEPROM)	msize = spd_sdram();#else	msize = fixed_sdram();#endif	/*	 * Initialize SDRAM if it is on local bus.	 */	sdram_init();#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)	/*	 * Initialize and enable DDR ECC.	 */	ddr_enable_ecc(msize * 1024 * 1024);#endif	/* return total bus SDRAM size(bytes)  -- DDR */	return (msize * 1024 * 1024);}#if !defined(CONFIG_SPD_EEPROM)/************************************************************************* *  fixed sdram init -- doesn't use serial presence detect. ************************************************************************/int fixed_sdram(void){	volatile immap_t *im = (immap_t *)CFG_IMMR;	u32 msize = 0;	u32 ddr_size;	u32 ddr_size_log2;	msize = CFG_DDR_SIZE;	for (ddr_size = msize << 20, ddr_size_log2 = 0;	     (ddr_size > 1);	     ddr_size = ddr_size>>1, ddr_size_log2++) {		if (ddr_size & 1) {			return -1;		}	}	im->sysconf.ddrlaw[0].bar = ((CFG_DDR_SDRAM_BASE>>12) & 0xfffff);	im->sysconf.ddrlaw[0].ar = LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE);#if (CFG_DDR_SIZE != 256)#warning Currently any ddr size other than 256 is not supported#endif	im->ddr.csbnds[2].csbnds = 0x0000000f;	im->ddr.cs_config[2] = CFG_DDR_CONFIG;	/* currently we use only one CS, so disable the other banks */	im->ddr.cs_config[0] = 0;	im->ddr.cs_config[1] = 0;	im->ddr.cs_config[3] = 0;	im->ddr.timing_cfg_1 = CFG_DDR_TIMING_1;	im->ddr.timing_cfg_2 = CFG_DDR_TIMING_2;	im->ddr.sdram_cfg =		SDRAM_CFG_SREN#if defined(CONFIG_DDR_2T_TIMING)		| SDRAM_CFG_2T_EN#endif		| SDRAM_CFG_SDRAM_TYPE_DDR1;#if defined (CONFIG_DDR_32BIT)	/* for 32-bit mode burst length is 8 */	im->ddr.sdram_cfg |= (SDRAM_CFG_32_BE | SDRAM_CFG_8_BE);#endif	im->ddr.sdram_mode = CFG_DDR_MODE;	im->ddr.sdram_interval = CFG_DDR_INTERVAL;	udelay(200);	/* enable DDR controller */	im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;	return msize;}#endif/*!CFG_SPD_EEPROM*/int checkboard (void){	puts("Board: Wind River SBC834x\n");	return 0;}/* * if board is fitted with SDRAM */#if defined(CFG_BR2_PRELIM)  \	&& defined(CFG_OR2_PRELIM) \	&& defined(CFG_LBLAWBAR2_PRELIM) \	&& defined(CFG_LBLAWAR2_PRELIM)/* * Initialize SDRAM memory on the Local Bus. */void sdram_init(void){	volatile immap_t *immap = (immap_t *)CFG_IMMR;	volatile lbus83xx_t *lbc= &immap->lbus;	uint *sdram_addr = (uint *)CFG_LBC_SDRAM_BASE;	puts("\n   SDRAM on Local Bus: ");	print_size (CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n");	/*	 * Setup SDRAM Base and Option Registers, already done in cpu_init.c	 */	/* setup mtrpt, lsrt and lbcr for LB bus */	lbc->lbcr = CFG_LBC_LBCR;	lbc->mrtpr = CFG_LBC_MRTPR;	lbc->lsrt = CFG_LBC_LSRT;	asm("sync");	/*	 * Configure the SDRAM controller Machine Mode Register.	 */	lbc->lsdmr = CFG_LBC_LSDMR_5; /* 0x40636733; normal operation */	lbc->lsdmr = CFG_LBC_LSDMR_1; /* 0x68636733; precharge all the banks */	asm("sync");	*sdram_addr = 0xff;	udelay(100);	lbc->lsdmr = CFG_LBC_LSDMR_2; /* 0x48636733; auto refresh */	asm("sync");	/*1 times*/	*sdram_addr = 0xff;	udelay(100);	/*2 times*/	*sdram_addr = 0xff;	udelay(100);	/*3 times*/	*sdram_addr = 0xff;	udelay(100);	/*4 times*/	*sdram_addr = 0xff;	udelay(100);	/*5 times*/	*sdram_addr = 0xff;	udelay(100);	/*6 times*/	*sdram_addr = 0xff;	udelay(100);	/*7 times*/	*sdram_addr = 0xff;	udelay(100);	/*8 times*/	*sdram_addr = 0xff;	udelay(100);	/* 0x58636733; mode register write operation */	lbc->lsdmr = CFG_LBC_LSDMR_4;	asm("sync");	*sdram_addr = 0xff;	udelay(100);	lbc->lsdmr = CFG_LBC_LSDMR_5; /* 0x40636733; normal operation */	asm("sync");	*sdram_addr = 0xff;	udelay(100);}#elsevoid sdram_init(void){	puts("   SDRAM on Local Bus: Disabled in config\n");}#endif#if defined(CONFIG_OF_BOARD_SETUP)void ft_board_setup(void *blob, bd_t *bd){	ft_cpu_setup(blob, bd);#ifdef CONFIG_PCI	ft_pci_setup(blob, bd);#endif}#endif