cpci405.c

AMCC POWERPC 44X系列的U-BOOT文件

/*
 * (C) Copyright 2001-2003
 * Stefan Roese, esd gmbh germany, [e-mail]
 *
 * 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 <net.h>

DECLARE_GLOBAL_DATA_PTR;

extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);       /*cmd_boot.c*/
#if 0
#define FPGA_DEBUG
#endif

/* fpga configuration data - generated by bin2cc */
const unsigned char fpgadata[] =
{
#ifdef CONFIG_CPCI405_VER2
# ifdef CONFIG_CPCI405AB
#  include "fpgadata_cpci405ab.c"
# else
#  include "fpgadata_cpci4052.c"
# endif
#else
# include "fpgadata_cpci405.c"
#endif
};

/*
 * include common fpga code (for esd boards)
 */
#include "../common/fpga.c"


#include "../common/auto_update.h"

#ifdef CONFIG_CPCI405AB
au_image_t au_image[] = {
	{"cpci405ab/preinst.img", 0, -1, AU_SCRIPT},
	{"cpci405ab/pImage", 0xffc00000, 0x000c0000, AU_NOR},
	{"cpci405ab/pImage.initrd", 0xffcc0000, 0x00300000, AU_NOR},
	{"cpci405ab/u-boot.img", 0xfffc0000, 0x00040000, AU_FIRMWARE},
	{"cpci405ab/postinst.img", 0, 0, AU_SCRIPT},
};
#else
#ifdef CONFIG_CPCI405_VER2
au_image_t au_image[] = {
	{"cpci4052/preinst.img", 0, -1, AU_SCRIPT},
	{"cpci4052/pImage", 0xffc00000, 0x000c0000, AU_NOR},
	{"cpci4052/pImage.initrd", 0xffcc0000, 0x00300000, AU_NOR},
	{"cpci4052/u-boot.img", 0xfffc0000, 0x00040000, AU_FIRMWARE},
	{"cpci4052/postinst.img", 0, 0, AU_SCRIPT},
};
#else
au_image_t au_image[] = {
	{"cpci405/preinst.img", 0, -1, AU_SCRIPT},
	{"cpci405/pImage", 0xffc00000, 0x000c0000, AU_NOR},
	{"cpci405/pImage.initrd", 0xffcc0000, 0x00310000, AU_NOR},
	{"cpci405/u-boot.img", 0xfffd0000, 0x00030000, AU_FIRMWARE},
	{"cpci405/postinst.img", 0, 0, AU_SCRIPT},
};
#endif
#endif

int N_AU_IMAGES = (sizeof(au_image) / sizeof(au_image[0]));


/* Prototypes */
int cpci405_version(void);
int gunzip(void *, int, unsigned char *, unsigned long *);
void lxt971_no_sleep(void);


int board_early_init_f (void)
{
#ifndef CONFIG_CPCI405_VER2
	int index, len, i;
	int status;
#endif

#ifdef FPGA_DEBUG
	/* set up serial port with default baudrate */
	(void) get_clocks ();
	gd->baudrate = CONFIG_BAUDRATE;
	serial_init ();
	console_init_f();
#endif

	/*
	 * First pull fpga-prg pin low, to disable fpga logic (on version 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            */

	/*
	 * Boot onboard FPGA
	 */
#ifndef CONFIG_CPCI405_VER2
	if (cpci405_version() == 1) {
		status = fpga_boot((unsigned char *)fpgadata, sizeof(fpgadata));
		if (status != 0) {
			/* booting FPGA failed */
#ifndef FPGA_DEBUG
			/* set up serial port with default baudrate */
			(void) get_clocks ();
			gd->baudrate = CONFIG_BAUDRATE;
			serial_init ();
			console_init_f();
#endif
			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 = fpgadata[index];
				printf("FPGA: %s\n", &(fpgadata[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);
		}
	}
#endif /* !CONFIG_CPCI405_VER2 */

	/*
	 * 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 (+FPGA on CPCI4052) ; active low; level sensitive
	 * IRQ 27 (EXT IRQ 2) PCI SLOT 0; active low; level sensitive
	 * IRQ 28 (EXT IRQ 3) PCI SLOT 1; active low; level sensitive
	 * IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive
	 * IRQ 30 (EXT IRQ 5) PCI SLOT 3; active low; level sensitive
	 * IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
	 */
	mtdcr(uicsr, 0xFFFFFFFF);       /* clear all ints */
	mtdcr(uicer, 0x00000000);       /* disable all ints */
	mtdcr(uiccr, 0x00000000);       /* set all to be non-critical*/
	if (cpci405_version() == 3) {
		mtdcr(uicpr, 0xFFFFFF99);       /* set int polarities */
	} else {
		mtdcr(uicpr, 0xFFFFFF81);       /* 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 */

	return 0;
}


/* ------------------------------------------------------------------------- */

int ctermm2(void)
{
#ifdef CONFIG_CPCI405_VER2
	return 0;                       /* no, board is cpci405 */
#else
	if ((*(unsigned char *)0xf0000400 == 0x00) &&
	    (*(unsigned char *)0xf0000401 == 0x01))
		return 0;               /* no, board is cpci405 */
	else
		return -1;              /* yes, board is cterm-m2 */
#endif
}


int cpci405_host(void)
{
	if (mfdcr(strap) & PSR_PCI_ARBIT_EN)
		return -1;              /* yes, board is cpci405 host */
	else
		return 0;               /* no, board is cpci405 adapter */
}


int cpci405_version(void)
{
	unsigned long cntrl0Reg;
	unsigned long value;

	/*
	 * Setup GPIO pins (CS2/GPIO11 and CS3/GPIO12 as GPIO)
	 */
	cntrl0Reg = mfdcr(cntrl0);
	mtdcr(cntrl0, cntrl0Reg | 0x03000000);
	out32(GPIO0_ODR, in32(GPIO0_ODR) & ~0x00180000);
	out32(GPIO0_TCR, in32(GPIO0_TCR) & ~0x00180000);
	udelay(1000);                   /* wait some time before reading input */
	value = in32(GPIO0_IR) & 0x00180000;       /* get config bits */

	/*
	 * Restore GPIO settings
	 */
	mtdcr(cntrl0, cntrl0Reg);

	switch (value) {
	case 0x00180000:
		/* CS2==1 && CS3==1 -> version 1 */
		return 1;
	case 0x00080000:
		/* CS2==0 && CS3==1 -> version 2 */
		return 2;
	case 0x00100000:
		/* CS2==1 && CS3==0 -> version 3 */
		return 3;
	case 0x00000000:
		/* CS2==0 && CS3==0 -> version 4 */
		return 4;
	default:
		/* should not be reached! */
		return 2;
	}
}


int misc_init_f (void)
{
	return 0;  /* dummy implementation */
}


int misc_init_r (void)
{
	unsigned long cntrl0Reg;

	/* adjust flash start and offset */
	gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
	gd->bd->bi_flashoffset = 0;

#ifdef CONFIG_CPCI405_VER2
	{
	unsigned char *dst;
	ulong len = sizeof(fpgadata);
	int status;
	int index;
	int i;

	/*
	 * On CPCI-405 version 2 the environment is saved in eeprom!
	 * FPGA can be gzip compressed (malloc) and booted this late.
	 */

	if (cpci405_version() >= 2) {
		/*
		 * Setup GPIO pins (CS6+CS7 as GPIO)
		 */
		cntrl0Reg = mfdcr(cntrl0);
		mtdcr(cntrl0, cntrl0Reg | 0x00300000);

		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);
		}

		/* restore gpio/cs settings */
		mtdcr(cntrl0, cntrl0Reg);

		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');

		free(dst);

		/*
		 * 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 */

		if (cpci405_version() == 3) {
			volatile unsigned short *fpga_mode = (unsigned short *)CFG_FPGA_BASE_ADDR;
			volatile unsigned char *leds = (unsigned char *)CFG_LED_ADDR;

			/*
			 * Enable outputs in fpga on version 3 board
			 */
			*fpga_mode |= CFG_FPGA_MODE_ENABLE_OUTPUT;

			/*
			 * Set outputs to 0
			 */
			*leds = 0x00;

			/*
			 * Reset external DUART
			 */
			*fpga_mode |= CFG_FPGA_MODE_DUART_RESET;
			udelay(100);
			*fpga_mode &= ~(CFG_FPGA_MODE_DUART_RESET);
		}
	}
	else {
		puts("\n*** U-Boot Version does not match Board Version!\n");
		puts("*** CPCI-405 Version 1.x detected!\n");
		puts("*** Please use correct U-Boot version (CPCI405 instead of CPCI4052)!\n\n");
	}
	}

#else /* CONFIG_CPCI405_VER2 */

#if 0 /* test-only: code-plug now not relavant for ip-address any more */
	/*
	 * Generate last byte of ip-addr from code-plug @ 0xf0000400
	 */
	if (ctermm2()) {
		char str[32];
		unsigned char ipbyte = *(unsigned char *)0xf0000400;

		/*
		 * Only overwrite ip-addr with allowed values