/* * (C) Copyright 2002 * Wolfgang Grandegger, DENX Software Engineering, wg@denx.de. * * 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 <command.h>#include <linux/ctype.h>#include <common.h>#include "fpga.h"int  power_on_reset(void);/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */static int fpga_get_version(fpga_t* fpga, char* name){    char vname[12];    /*     * Net-list string format:     *     "vvvvvvvvddddddddn...".     *     Version Date    Name     *     "0000000322042002PUMA" = PUMA version 3 from 22.04.2002.     */    if (strlen(name) < (16 + strlen(fpga->name)))	goto failure;    /* Check FPGA name */    if (strcmp(&name[16], fpga->name) != 0)	goto failure;    /* Get version number */    memcpy(vname, name, 8);    vname[8] = '\0';    return simple_strtoul(vname, NULL, 16); failure:    printf("Image name %s is invalid\n", name);    return -1;}/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */static fpga_t* fpga_get(char* fpga_name){    char name[FPGA_NAME_LEN];    int i;    if (strlen(fpga_name) >= FPGA_NAME_LEN)	goto failure;    for (i = 0; i < strlen(fpga_name); i++)	name[i] = toupper(fpga_name[i]);    name[i] = '\0';    for (i = 0; i < fpga_count; i++) {	if (strcmp(name, fpga_list[i].name) == 0)	    return &fpga_list[i];    } failure:    printf("FPGA: name %s is invalid\n", fpga_name);    return NULL;}/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */static void fpga_status (fpga_t* fpga){    /* Check state */    if (fpga_control(fpga, FPGA_DONE_IS_HIGH))	printf ("%s is loaded (%08lx)\n",		fpga->name, fpga_control(fpga, FPGA_GET_ID));    else	printf ("%s is NOT loaded\n", fpga->name);}/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */#define FPGA_RESET_TIMEOUT 100 /* = 10 ms */static int fpga_reset (fpga_t* fpga){    int i;    /* Set PROG to low and wait til INIT goes low */    fpga_control(fpga, FPGA_PROG_SET_LOW);    for (i = 0; i < FPGA_RESET_TIMEOUT; i++) {	udelay (100);	if (!fpga_control(fpga, FPGA_INIT_IS_HIGH))	    break;    }    if (i == FPGA_RESET_TIMEOUT)	goto failure;    /* Set PROG to high and wait til INIT goes high */    fpga_control(fpga, FPGA_PROG_SET_HIGH);    for (i = 0; i < FPGA_RESET_TIMEOUT; i++) {	udelay (100);	if (fpga_control(fpga, FPGA_INIT_IS_HIGH))	    break;    }    if (i == FPGA_RESET_TIMEOUT)	goto failure;    return 0; failure:    return 1;}/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */#define FPGA_LOAD_TIMEOUT 100 /* = 10 ms */static int fpga_load (fpga_t* fpga, ulong addr, int checkall){    volatile uchar *fpga_addr = (volatile uchar *)fpga->conf_base;    image_header_t hdr;    ulong len, checksum;    uchar *data = (uchar *)&hdr;    char *s, msg[32];    int verify, i;    /*     * Check the image header and data of the net-list     */    memcpy (&hdr, (char *)addr, sizeof(image_header_t));    if (hdr.ih_magic != IH_MAGIC) {	strcpy (msg, "Bad Image Magic Number");	goto failure;    }    len  = sizeof(image_header_t);    checksum = hdr.ih_hcrc;    hdr.ih_hcrc = 0;    if (crc32 (0, data, len) != checksum) {	strcpy (msg, "Bad Image Header CRC");	goto failure;    }    data = (uchar*)(addr + sizeof(image_header_t));    len  = hdr.ih_size;    s = getenv ("verify");    verify = (s && (*s == 'n')) ? 0 : 1;    if (verify) {	if (crc32 (0, data, len) != hdr.ih_dcrc) {	    strcpy (msg, "Bad Image Data CRC");	    goto failure;	}    }    if (checkall && fpga_get_version(fpga, hdr.ih_name) < 0)	return 1;    /* align length */    if (len & 1)	++len;    /*     * Reset FPGA and wait for completion     */    if (fpga_reset(fpga)) {	strcpy (msg, "Reset Timeout");	goto failure;    }    printf ("(%s)... ", hdr.ih_name);    /*     * Copy data to FPGA     */    fpga_control (fpga, FPGA_LOAD_MODE);    while (len--) {	*fpga_addr = *data++;    }    fpga_control (fpga, FPGA_READ_MODE);    /*     * Wait for completion and check error status if timeout     */    for (i = 0; i < FPGA_LOAD_TIMEOUT; i++) {	udelay (100);	if (fpga_control (fpga, FPGA_DONE_IS_HIGH))	    break;    }    if (i == FPGA_LOAD_TIMEOUT) {	if (fpga_control(fpga, FPGA_INIT_IS_HIGH))	    strcpy(msg, "Invalid Size");	else	    strcpy(msg, "CRC Error");	goto failure;    }    printf("done\n");    return 0; failure:    printf("ERROR: %s\n", msg);    return 1;}#if (CONFIG_COMMANDS & CFG_CMD_BSP)/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */int do_fpga (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]){    ulong addr = 0;    int i;    fpga_t* fpga;    if (argc < 2)	goto failure;    if (strncmp(argv[1], "stat", 4) == 0) {		/* status */	if (argc == 2) {	    for (i = 0; i < fpga_count; i++) {		fpga_status (&fpga_list[i]);	    }	}	else if (argc == 3) {	    if ((fpga = fpga_get(argv[2])) == 0)		goto failure;	    fpga_status (fpga);	}	else	    goto failure;    }    else if (strcmp(argv[1],"load") == 0) {		/* load */	if (argc == 3 && fpga_count == 1) {	    fpga = &fpga_list[0];	}	else if (argc == 4) {	    if ((fpga = fpga_get(argv[2])) == 0)		goto failure;	}	else	    goto failure;	addr = simple_strtoul(argv[argc-1], NULL, 16);	printf ("FPGA load %s: addr %08lx: ",		fpga->name, addr);	fpga_load (fpga, addr, 1);    }    else if (strncmp(argv[1], "rese", 4) == 0) {	/* reset */	if (argc == 2 && fpga_count == 1) {	    fpga = &fpga_list[0];	}	else if (argc == 3) {	    if ((fpga = fpga_get(argv[2])) == 0)		goto failure;	}	else	    goto failure;	printf ("FPGA reset %s: ", fpga->name);	if (fpga_reset(fpga))	    printf ("ERROR: Timeout\n");	else	    printf ("done\n");    }    else	goto failure;    return 0; failure:    printf ("Usage:\n%s\n", cmdtp->usage);    return 1;}U_BOOT_CMD(	fpga,	4,	1,	do_fpga,	"fpga    - access FPGA(s)\n",	"fpga status [name] - print FPGA status\n"	"fpga reset  [name] - reset FPGA\n"	"fpga load [name] addr - load FPGA configuration data\n");#endif	/* CONFIG_COMMANDS & CFG_CMD_BSP *//* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */int fpga_init (void){    ulong addr;    ulong new_id, old_id = 0;    image_header_t *hdr;    fpga_t* fpga;    int do_load, i, j;    char name[16], *s;    /*     *  Port setup for FPGA control     */    for (i = 0; i < fpga_count; i++) {	fpga_control(&fpga_list[i], FPGA_INIT_PORTS);    }    /*     * Load FPGA(s): a new net-list is loaded if the FPGA is     * empty, Power-on-Reset or the old one is not up-to-date     */    for (i = 0; i < fpga_count; i++) {	fpga = &fpga_list[i];	printf ("%s:  ", fpga->name);	for (j = 0; j < strlen(fpga->name); j++)	    name[j] = tolower(fpga->name[j]);	name[j] = '\0';	sprintf(name, "%s_addr", name);	addr = 0;	if ((s = getenv(name)) != NULL)	    addr = simple_strtoul(s, NULL, 16);	if (!addr) {	    printf ("env. variable %s undefined\n", name);	    return 1;	}	hdr = (image_header_t *)addr;	if ((new_id = fpga_get_version(fpga, hdr->ih_name)) == -1)	    return 1;	do_load = 1;	if (!power_on_reset() && fpga_control(fpga, FPGA_DONE_IS_HIGH)) {	    old_id = fpga_control(fpga, FPGA_GET_ID);	    if (new_id == old_id)		do_load = 0;	}	if (do_load) {	    printf ("loading ");	    fpga_load (fpga, addr, 0);	} else {	    printf ("loaded (%08lx)\n", old_id);	}    }    return 0;}