/* * (C) Copyright 2001-2004 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.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 */#include <common.h>#include <asm/processor.h>#include <command.h>#include <malloc.h>#include <pci.h>#include <405gp_pci.h>#include "pci405.h"DECLARE_GLOBAL_DATA_PTR;/* Prototypes */int gunzip(void *, int, unsigned char *, unsigned long *);int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);/*cmd_boot.c*/unsigned long fpga_done_state(void);unsigned long fpga_init_state(void);#if 0#define FPGA_DEBUG#endif/* predefine these here */#define FPGA_DONE_STATE (fpga_done_state())#define FPGA_INIT_STATE (fpga_init_state())/* fpga configuration data - generated by bin2cc */const unsigned char fpgadata[] ={#include "fpgadata.c"};/* * include common fpga code (for esd boards) */#include "../common/fpga.c"#define FPGA_DONE_STATE_V11 (in32(GPIO0_IR) & CFG_FPGA_DONE)#define FPGA_DONE_STATE_V12 (in32(GPIO0_IR) & CFG_FPGA_DONE_V12)#define FPGA_INIT_STATE_V11 (in32(GPIO0_IR) & CFG_FPGA_INIT)#define FPGA_INIT_STATE_V12 (in32(GPIO0_IR) & CFG_FPGA_INIT_V12)int board_revision(void){	unsigned long cntrl0Reg;	unsigned long value;	/*	 * Get version of PCI405 board from GPIO's	 */	/*	 * Setup GPIO pins (CS2/GPIO11 and CS3/GPIO12 as GPIO)	 */	cntrl0Reg = mfdcr(cntrl0);	mtdcr(cntrl0, cntrl0Reg | 0x03000000);	out32(GPIO0_ODR, in32(GPIO0_ODR) & ~0x00100200);	out32(GPIO0_TCR, in32(GPIO0_TCR) & ~0x00100200);	udelay(1000);                   /* wait some time before reading input */	value = in32(GPIO0_IR) & 0x00100200;       /* get config bits */	/*	 * Restore GPIO settings	 */	mtdcr(cntrl0, cntrl0Reg);	switch (value) {	case 0x00100200:		/* CS2==1 && IRQ5==1 -> version 1.0 and 1.1 */		return 1;	case 0x00000200:		/* CS2==0 && IRQ5==1 -> version 1.2 */		return 2;	case 0x00000000:		/* CS2==0 && IRQ5==0 -> version 1.3 */		return 3;#if 0 /* not yet manufactured ! */	case 0x00100000:		/* CS2==1 && IRQ5==0 -> version 1.4 */		return 4;#endif	default:		/* should not be reached! */		return 0;	}}unsigned long fpga_done_state(void){	if (gd->board_type < 2) {		return FPGA_DONE_STATE_V11;	} else {		return FPGA_DONE_STATE_V12;	}}unsigned long fpga_init_state(void){	if (gd->board_type < 2) {		return FPGA_INIT_STATE_V11;	} else {		return FPGA_INIT_STATE_V12;	}}int board_early_init_f (void){	unsigned long cntrl0Reg;	/*	 * First pull fpga-prg pin low, to disable fpga logic (on version 1.2 board)	 */	out32(GPIO0_ODR, 0x00000000);        /* no open drain pins      */	out32(GPIO0_TCR, CFG_FPGA_PRG);      /* setup for output        */	out32(GPIO0_OR,  CFG_FPGA_PRG);      /* set output pins to high */	out32(GPIO0_OR, 0);                  /* pull prg low            */	/*	 * IRQ 0-15  405GP internally generated; active high; level sensitive	 * IRQ 16    405GP internally generated; active low; level sensitive	 * IRQ 17-24 RESERVED	 * IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive	 * IRQ 26 (EXT IRQ 1) CAN1; active low; level sensitive	 * IRQ 27 (EXT IRQ 2) CAN2; active low; level sensitive	 * IRQ 28 (EXT IRQ 3) CAN3; active low; level sensitive	 * IRQ 29 (EXT IRQ 4) unused; active low; level sensitive	 * IRQ 30 (EXT IRQ 5) FPGA Timestamp; active low; level sensitive	 * IRQ 31 (EXT IRQ 6) PCI Reset; active low; level sensitive	 */	mtdcr(uicsr, 0xFFFFFFFF);        /* clear all ints */	mtdcr(uicer, 0x00000000);        /* disable all ints */	mtdcr(uiccr, 0x00000000);        /* set all to be non-critical*/	mtdcr(uicpr, 0xFFFFFF80);        /* set int polarities */	mtdcr(uictr, 0x10000000);        /* set int trigger levels */	mtdcr(uicvcr, 0x00000001);       /* set vect base=0,INT0 highest priority*/	mtdcr(uicsr, 0xFFFFFFFF);        /* clear all ints */	/*	 * Setup GPIO pins (IRQ4/GPIO21 as GPIO)	 */	cntrl0Reg = mfdcr(cntrl0);	mtdcr(cntrl0, cntrl0Reg | 0x00008000);	/*	 * Setup GPIO pins (CS6+CS7 as GPIO)	 */	mtdcr(cntrl0, cntrl0Reg | 0x00300000);	/*	 * EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 25 us	 */	mtebc (epcr, 0xa8400000); /* ebc always driven */	return 0;}/* ------------------------------------------------------------------------- */int misc_init_f (void){	return 0;  /* dummy implementation */}int misc_init_r (void){	unsigned char *dst;	ulong len = sizeof(fpgadata);	int status;	int index;	int i;	unsigned int *ptr;	unsigned int *magic;	/*	 * On PCI-405 the environment is saved in eeprom!	 * FPGA can be gzip compressed (malloc) and booted this late.	 */	dst = malloc(CFG_FPGA_MAX_SIZE);	if (gunzip (dst, CFG_FPGA_MAX_SIZE, (uchar *)fpgadata, &len) != 0) {		printf ("GUNZIP ERROR - must RESET board to recover\n");		do_reset (NULL, 0, 0, NULL);	}	status = fpga_boot(dst, len);	if (status != 0) {		printf("\nFPGA: Booting failed ");		switch (status) {		case ERROR_FPGA_PRG_INIT_LOW:			printf("(Timeout: INIT not low after asserting PROGRAM*)\n ");			break;		case ERROR_FPGA_PRG_INIT_HIGH:			printf("(Timeout: INIT not high after deasserting PROGRAM*)\n ");			break;		case ERROR_FPGA_PRG_DONE:			printf("(Timeout: DONE not high after programming FPGA)\n ");			break;		}		/* display infos on fpgaimage */		index = 15;		for (i=0; i<4; i++) {			len = dst[index];			printf("FPGA: %s\n", &(dst[index+1]));			index += len+3;		}		putc ('\n');		/* delayed reboot */		for (i=20; i>0; i--) {			printf("Rebooting in %2d seconds \r",i);			for (index=0;index<1000;index++)				udelay(1000);		}		putc ('\n');		do_reset(NULL, 0, 0, NULL);	}	puts("FPGA:  ");	/* display infos on fpgaimage */	index = 15;	for (i=0; i<4; i++) {		len = dst[index];		printf("%s ", &(dst[index+1]));		index += len+3;	}	putc ('\n');	/*	 * Reset FPGA via FPGA_DATA pin	 */	SET_FPGA(FPGA_PRG | FPGA_CLK);	udelay(1000); /* wait 1ms */	SET_FPGA(FPGA_PRG | FPGA_CLK | FPGA_DATA);	udelay(1000); /* wait 1ms */	/*	 * Check if magic for pci reconfig is written	 */	magic = (unsigned int *)0x00000004;	if (*magic == PCI_RECONFIG_MAGIC) {		/*		 * Rewrite pci config regs (only after soft-reset with magic set)		 */		ptr = (unsigned int *)PCI_REGS_ADDR;		if (crc32(0, (uchar *)PCI_REGS_ADDR+4, PCI_REGS_LEN-4) == *ptr) {			puts("Restoring PCI Configurations Regs!\n");			ptr = (unsigned int *)PCI_REGS_ADDR + 1;			for (i=0; i<0x40; i+=4) {				pci_write_config_dword(PCIDEVID_405GP, i, *ptr++);			}		}		mtdcr(uicsr, 0xFFFFFFFF);        /* clear all ints */		*magic = 0;      /* clear pci reconfig magic again */	}#if 1 /* test-only */	/*	 * Decrease PLB latency timeout and reduce priority of the PCI bridge master	 */#define PCI0_BRDGOPT1 0x4a	pci_write_config_word(PCIDEVID_405GP, PCI0_BRDGOPT1, 0x3f20);/*	pci_write_config_word(PCIDEVID_405GP, PCI0_BRDGOPT1, 0x3f60);	*/#define plb0_acr      0x87	/*	 * Enable fairness and high bus utilization	 */	mtdcr(plb0_acr, 0x98000000);#if 0 /* test-only */	printf("CCR0=%08x\n", mfspr(ccr0)); /* test-only *//*	mtspr(ccr0, (mfspr(ccr0) & 0xff8fffff) | 0x00100000);	*/	mtspr(ccr0, (mfspr(ccr0) & 0xff8fffff) | 0x00000000);#endif/*	printf("CCR0=%08x\n", mfspr(ccr0)); */ /* test-only */#endif	free(dst);	return (0);}/* * Check Board Identity: */int checkboard (void){	char str[64];	int i = getenv_r ("serial#", str, sizeof(str));	puts ("Board: ");	if (i == -1) {		puts ("### No HW ID - assuming PCI405");	} else {		puts (str);	}	gd->board_type = board_revision();	printf(" (Rev 1.%ld", gd->board_type);	if (gd->board_type >= 2) {		unsigned long cntrl0Reg;		unsigned long value;		/*		 * Setup GPIO pins (Trace/GPIO1 to GPIO)		 */		cntrl0Reg = mfdcr(cntrl0);		mtdcr(cntrl0, cntrl0Reg & ~0x08000000);		out32(GPIO0_ODR, in32(GPIO0_ODR) & ~0x40000000);		out32(GPIO0_TCR, in32(GPIO0_TCR) & ~0x40000000);		udelay(1000);                   /* wait some time before reading input */		value = in32(GPIO0_IR) & 0x40000000;       /* get config bits */		if (value) {			puts(", 33 MHz PCI");		} else {			puts(", 66 Mhz PCI");		}	}	puts(")\n");	return 0;}/* ------------------------------------------------------------------------- */long int initdram (int board_type){	unsigned long val;	mtdcr(memcfga, mem_mb0cf);	val = mfdcr(memcfgd);#if 0	printf("\nmb0cf=%x\n", val); /* test-only */	printf("strap=%x\n", mfdcr(strap)); /* test-only */#endif#if 0 /* test-only: all PCI405 version must report 16mb */	return (4*1024*1024 << ((val & 0x000e0000) >> 17));#else	return (16*1024*1024);#endif}/* ------------------------------------------------------------------------- */int testdram (void){	/* TODO: XXX XXX XXX */	printf ("test: 16 MB - ok\n");	return (0);}/* ------------------------------------------------------------------------- */int wpeeprom(int wp){	int wp_state = wp;	volatile unsigned char *uart1_mcr = (volatile unsigned char *)0xef600404;	if (wp == 1) {		*uart1_mcr &= ~0x02;	} else if (wp == 0) {		*uart1_mcr |= 0x02;	} else {		if (*uart1_mcr & 0x02) {			wp_state = 0;		} else {			wp_state = 1;		}	}	return wp_state;}int do_wpeeprom(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]){	int wp = -1;	if (argc >= 2) {		if (argv[1][0] == '1') {			wp = 1;		} else if (argv[1][0] == '0') {			wp = 0;		}	}	wp = wpeeprom(wp);	printf("EEPROM write protection %s\n", wp ? "ENABLED" : "DISABLED");	return 0;}U_BOOT_CMD(	wpeeprom,	2,	1,	do_wpeeprom,	"wpeeprom - Check/Enable/Disable I2C EEPROM write protection\n",	"wpeeprom\n"	"    - check I2C EEPROM write protection state\n"	"wpeeprom 1\n"	"    - enable I2C EEPROM write protection\n"	"wpeeprom 0\n"	"    - disable I2C EEPROM write protection\n"	);