/* * (C) Copyright 2003 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2004 * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com. * * 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 *//* * cpci5200.c - main board support/init for the esd cpci5200. */#include <common.h>#include <mpc5xxx.h>#include <pci.h>#include <command.h>#include "mt46v16m16-75.h"void init_ata_reset(void);static void sdram_start(int hi_addr){	long hi_addr_bit = hi_addr ? 0x01000000 : 0;	/* unlock mode register */	*(vu_long *) MPC5XXX_SDRAM_CTRL =	    SDRAM_CONTROL | 0x80000000 | hi_addr_bit;	__asm__ volatile ("sync");	/* precharge all banks */	*(vu_long *) MPC5XXX_SDRAM_CTRL =	    SDRAM_CONTROL | 0x80000002 | hi_addr_bit;	__asm__ volatile ("sync");	/* set mode register: extended mode */	*(vu_long *) MPC5XXX_SDRAM_MODE = SDRAM_EMODE;	__asm__ volatile ("sync");	/* set mode register: reset DLL */	*(vu_long *) MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000;	__asm__ volatile ("sync");	/* precharge all banks */	*(vu_long *) MPC5XXX_SDRAM_CTRL =	    SDRAM_CONTROL | 0x80000002 | hi_addr_bit;	__asm__ volatile ("sync");	/* auto refresh */	*(vu_long *) MPC5XXX_SDRAM_CTRL =	    SDRAM_CONTROL | 0x80000004 | hi_addr_bit;	__asm__ volatile ("sync");	/* set mode register */	*(vu_long *) MPC5XXX_SDRAM_MODE = SDRAM_MODE;	__asm__ volatile ("sync");	/* normal operation */	*(vu_long *) MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;	__asm__ volatile ("sync");}/* * ATTENTION: Although partially referenced initdram does NOT make real use *            use of CFG_SDRAM_BASE. The code does not work if CFG_SDRAM_BASE *            is something else than 0x00000000. */long int initdram(int board_type){	ulong dramsize = 0;	ulong test1, test2;	/* setup SDRAM chip selects */	*(vu_long *) MPC5XXX_SDRAM_CS0CFG = 0x0000001e;	/* 2G at 0x0 */	*(vu_long *) MPC5XXX_SDRAM_CS1CFG = 0x80000000;	/* disabled */	__asm__ volatile ("sync");	/* setup config registers */	*(vu_long *) MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;	*(vu_long *) MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;	__asm__ volatile ("sync");	/* set tap delay */	*(vu_long *) MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;	__asm__ volatile ("sync");	/* find RAM size using SDRAM CS0 only */	sdram_start(0);	test1 = get_ram_size((long *) CFG_SDRAM_BASE, 0x80000000);	sdram_start(1);	test2 = get_ram_size((long *) CFG_SDRAM_BASE, 0x80000000);	if (test1 > test2) {		sdram_start(0);		dramsize = test1;	} else {		dramsize = test2;	}	/* memory smaller than 1MB is impossible */	if (dramsize < (1 << 20)) {		dramsize = 0;	}	/* set SDRAM CS0 size according to the amount of RAM found */	if (dramsize > 0) {		*(vu_long *) MPC5XXX_SDRAM_CS0CFG =		    0x13 + __builtin_ffs(dramsize >> 20) - 1;		/* let SDRAM CS1 start right after CS0 */		*(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;	/* 2G */	} else {#if 0		*(vu_long *) MPC5XXX_SDRAM_CS0CFG = 0;	/* disabled */		/* let SDRAM CS1 start right after CS0 */		*(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;	/* 2G */#else		*(vu_long *) MPC5XXX_SDRAM_CS0CFG =		    0x13 + __builtin_ffs(0x08000000 >> 20) - 1;		/* let SDRAM CS1 start right after CS0 */		*(vu_long *) MPC5XXX_SDRAM_CS1CFG = 0x08000000 + 0x0000001e;	/* 2G */#endif	}#if 0	/* find RAM size using SDRAM CS1 only */	sdram_start(0);	get_ram_size((ulong *) (CFG_SDRAM_BASE + dramsize), 0x80000000);	sdram_start(1);	get_ram_size((ulong *) (CFG_SDRAM_BASE + dramsize), 0x80000000);	sdram_start(0);#endif	/* set SDRAM CS1 size according to the amount of RAM found */	*(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize;	/* disabled */	init_ata_reset();	return (dramsize);}int checkboard(void){	puts("Board: esd CPCI5200 (cpci5200)\n");	return 0;}void flash_preinit(void){	/*	 * Now, when we are in RAM, enable flash write	 * access for detection process.	 * Note that CS_BOOT cannot be cleared when	 * executing in flash.	 */	*(vu_long *) MPC5XXX_BOOTCS_CFG &= ~0x1;	/* clear RO */}void flash_afterinit(ulong size){	if (size == 0x02000000) {		/* adjust mapping */		*(vu_long *) MPC5XXX_BOOTCS_START =		    *(vu_long *) MPC5XXX_CS0_START =		    START_REG(CFG_BOOTCS_START | size);		*(vu_long *) MPC5XXX_BOOTCS_STOP =		    *(vu_long *) MPC5XXX_CS0_STOP =		    STOP_REG(CFG_BOOTCS_START | size, size);	}}#ifdef	CONFIG_PCIstatic struct pci_controller hose;extern void pci_mpc5xxx_init(struct pci_controller *);void pci_init_board(void    ) {	pci_mpc5xxx_init(&hose);}#endif#if defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET)#define GPIO_PSC1_4	0x01000000ULvoid init_ide_reset(void){	debug("init_ide_reset\n");	/* Configure PSC1_4 as GPIO output for ATA reset */	*(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC1_4;	*(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_PSC1_4;}void ide_set_reset(int idereset){	debug("ide_reset(%d)\n", idereset);	if (idereset) {		*(vu_long *) MPC5XXX_WU_GPIO_DATA &= ~GPIO_PSC1_4;	} else {		*(vu_long *) MPC5XXX_WU_GPIO_DATA |= GPIO_PSC1_4;	}}#endif				/* defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) */#define MPC5XXX_SIMPLEIO_GPIO_ENABLE       (MPC5XXX_GPIO + 0x0004)#define MPC5XXX_SIMPLEIO_GPIO_DIR          (MPC5XXX_GPIO + 0x000C)#define MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT  (MPC5XXX_GPIO + 0x0010)#define MPC5XXX_SIMPLEIO_GPIO_DATA_INPUT   (MPC5XXX_GPIO + 0x0014)#define MPC5XXX_INTERRUPT_GPIO_ENABLE      (MPC5XXX_GPIO + 0x0020)#define MPC5XXX_INTERRUPT_GPIO_DIR         (MPC5XXX_GPIO + 0x0028)#define MPC5XXX_INTERRUPT_GPIO_DATA_OUTPUT (MPC5XXX_GPIO + 0x002C)#define MPC5XXX_INTERRUPT_GPIO_STATUS      (MPC5XXX_GPIO + 0x003C)#define GPIO_WU6	0x40000000UL#define GPIO_USB0       0x00010000UL#define GPIO_USB9       0x08000000UL#define GPIO_USB9S      0x00080000ULvoid init_ata_reset(void){	debug("init_ata_reset\n");	/* Configure GPIO_WU6 as GPIO output for ATA reset */	*(vu_long *) MPC5XXX_WU_GPIO_DATA |= GPIO_WU6;	*(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_WU6;	*(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_WU6;	__asm__ volatile ("sync");	*(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT &= ~GPIO_USB0;	*(vu_long *) MPC5XXX_SIMPLEIO_GPIO_ENABLE |= GPIO_USB0;	*(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DIR |= GPIO_USB0;	__asm__ volatile ("sync");	*(vu_long *) MPC5XXX_INTERRUPT_GPIO_DATA_OUTPUT &= ~GPIO_USB9;	*(vu_long *) MPC5XXX_INTERRUPT_GPIO_ENABLE &= ~GPIO_USB9;	__asm__ volatile ("sync");	if ((*(vu_long *) MPC5XXX_INTERRUPT_GPIO_STATUS & GPIO_USB9S) == 0) {		*(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT |= GPIO_USB0;		__asm__ volatile ("sync");	}}int do_writepci(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]){	unsigned int addr;	unsigned int size;	int i;	volatile unsigned long *ptr;	addr = simple_strtol(argv[1], NULL, 16);	size = simple_strtol(argv[2], NULL, 16);	printf("\nWriting at addr %08x, size %08x.\n", addr, size);	while (1) {		ptr = (volatile unsigned long *)addr;		for (i = 0; i < (size >> 2); i++) {			*ptr++ = i;		}		/* Abort if ctrl-c was pressed */		if (ctrlc()) {			puts("\nAbort\n");			return 0;		}		putc('.');	}	return 0;}U_BOOT_CMD(writepci, 3, 1, do_writepci,	   "writepci- Write some data to pcibus\n",	   "<addr> <size>\n" "        - Write some data to pcibus.\n");