u-boot/common/cmd_fpga.c

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/*
* (C) Copyright 2000, 2001
* Rich Ireland, Enterasys Networks, rireland@enterasys.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
*
*/
/*
* FPGA support
*/
#include <common.h>
#include <command.h>
#if defined(CONFIG_CMD_NET)
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#include <net.h>
#endif
#include <fpga.h>
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#include <malloc.h>
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#if 0
#define FPGA_DEBUG
#endif
#ifdef FPGA_DEBUG
#define PRINTF(fmt,args...) printf (fmt ,##args)
#else
#define PRINTF(fmt,args...)
#endif
/* Local functions */
static int fpga_get_op (char *opstr);
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/* Local defines */
#define FPGA_NONE -1
#define FPGA_INFO 0
#define FPGA_LOAD 1
#define FPGA_LOADB 2
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#define FPGA_DUMP 3
#define FPGA_LOADMK 4
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/* Convert bitstream data and load into the fpga */
int fpga_loadbitstream(unsigned long dev, char* fpgadata, size_t size)
{
#if defined(CONFIG_FPGA_XILINX)
unsigned int length;
unsigned int swapsize;
char buffer[80];
unsigned char *dataptr;
unsigned int i;
int rc;
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dataptr = (unsigned char *)fpgadata;
/* skip the first bytes of the bitsteam, their meaning is unknown */
length = (*dataptr << 8) + *(dataptr+1);
dataptr+=2;
dataptr+=length;
/* get design name (identifier, length, string) */
length = (*dataptr << 8) + *(dataptr+1);
dataptr+=2;
if (*dataptr++ != 0x61) {
PRINTF ("%s: Design name identifier not recognized in bitstream\n",
__FUNCTION__ );
return FPGA_FAIL;
}
length = (*dataptr << 8) + *(dataptr+1);
dataptr+=2;
for(i=0;i<length;i++)
buffer[i] = *dataptr++;
printf(" design filename = \"%s\"\n", buffer);
/* get part number (identifier, length, string) */
if (*dataptr++ != 0x62) {
printf("%s: Part number identifier not recognized in bitstream\n",
__FUNCTION__ );
return FPGA_FAIL;
}
length = (*dataptr << 8) + *(dataptr+1);
dataptr+=2;
for(i=0;i<length;i++)
buffer[i] = *dataptr++;
printf(" part number = \"%s\"\n", buffer);
/* get date (identifier, length, string) */
if (*dataptr++ != 0x63) {
printf("%s: Date identifier not recognized in bitstream\n",
__FUNCTION__);
return FPGA_FAIL;
}
length = (*dataptr << 8) + *(dataptr+1);
dataptr+=2;
for(i=0;i<length;i++)
buffer[i] = *dataptr++;
printf(" date = \"%s\"\n", buffer);
/* get time (identifier, length, string) */
if (*dataptr++ != 0x64) {
printf("%s: Time identifier not recognized in bitstream\n",__FUNCTION__);
return FPGA_FAIL;
}
length = (*dataptr << 8) + *(dataptr+1);
dataptr+=2;
for(i=0;i<length;i++)
buffer[i] = *dataptr++;
printf(" time = \"%s\"\n", buffer);
/* get fpga data length (identifier, length) */
if (*dataptr++ != 0x65) {
printf("%s: Data length identifier not recognized in bitstream\n",
__FUNCTION__);
return FPGA_FAIL;
}
swapsize = ((unsigned int) *dataptr <<24) +
((unsigned int) *(dataptr+1) <<16) +
((unsigned int) *(dataptr+2) <<8 ) +
((unsigned int) *(dataptr+3) ) ;
dataptr+=4;
printf(" bytes in bitstream = %d\n", swapsize);
rc = fpga_load(dev, dataptr, swapsize);
return rc;
#else
printf("Bitstream support only for Xilinx devices\n");
return FPGA_FAIL;
#endif
}
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/* ------------------------------------------------------------------------- */
/* command form:
* fpga <op> <device number> <data addr> <datasize>
* where op is 'load', 'dump', or 'info'
* If there is no device number field, the fpga environment variable is used.
* If there is no data addr field, the fpgadata environment variable is used.
* The info command requires no data address field.
*/
int do_fpga (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
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{
int op, dev = FPGA_INVALID_DEVICE;
size_t data_size = 0;
void *fpga_data = NULL;
char *devstr = getenv ("fpga");
char *datastr = getenv ("fpgadata");
int rc = FPGA_FAIL;
#if defined (CONFIG_FIT)
const char *fit_uname = NULL;
ulong fit_addr;
#endif
if (devstr)
dev = (int) simple_strtoul (devstr, NULL, 16);
if (datastr)
fpga_data = (void *) simple_strtoul (datastr, NULL, 16);
switch (argc) {
case 5: /* fpga <op> <dev> <data> <datasize> */
data_size = simple_strtoul (argv[4], NULL, 16);
case 4: /* fpga <op> <dev> <data> */
#if defined(CONFIG_FIT)
if (fit_parse_subimage (argv[3], (ulong)fpga_data,
&fit_addr, &fit_uname)) {
fpga_data = (void *)fit_addr;
debug ("* fpga: subimage '%s' from FIT image at 0x%08lx\n",
fit_uname, fit_addr);
} else
#endif
{
fpga_data = (void *) simple_strtoul (argv[3], NULL, 16);
debug ("* fpga: cmdline image address = 0x%08lx\n", (ulong)fpga_data);
}
PRINTF ("%s: fpga_data = 0x%x\n", __FUNCTION__, (uint) fpga_data);
case 3: /* fpga <op> <dev | data addr> */
dev = (int) simple_strtoul (argv[2], NULL, 16);
PRINTF ("%s: device = %d\n", __FUNCTION__, dev);
/* FIXME - this is a really weak test */
if ((argc == 3) && (dev > fpga_count ())) { /* must be buffer ptr */
PRINTF ("%s: Assuming buffer pointer in arg 3\n",
__FUNCTION__);
#if defined(CONFIG_FIT)
if (fit_parse_subimage (argv[2], (ulong)fpga_data,
&fit_addr, &fit_uname)) {
fpga_data = (void *)fit_addr;
debug ("* fpga: subimage '%s' from FIT image at 0x%08lx\n",
fit_uname, fit_addr);
} else
#endif
{
fpga_data = (void *) dev;
debug ("* fpga: cmdline image address = 0x%08lx\n", (ulong)fpga_data);
}
PRINTF ("%s: fpga_data = 0x%x\n",
__FUNCTION__, (uint) fpga_data);
dev = FPGA_INVALID_DEVICE; /* reset device num */
}
case 2: /* fpga <op> */
op = (int) fpga_get_op (argv[1]);
break;
default:
PRINTF ("%s: Too many or too few args (%d)\n",
__FUNCTION__, argc);
op = FPGA_NONE; /* force usage display */
break;
}
switch (op) {
case FPGA_NONE:
return cmd_usage(cmdtp);
case FPGA_INFO:
rc = fpga_info (dev);
break;
case FPGA_LOAD:
rc = fpga_load (dev, fpga_data, data_size);
break;
case FPGA_LOADB:
rc = fpga_loadbitstream(dev, fpga_data, data_size);
break;
case FPGA_LOADMK:
switch (genimg_get_format (fpga_data)) {
case IMAGE_FORMAT_LEGACY:
{
image_header_t *hdr = (image_header_t *)fpga_data;
ulong data;
data = (ulong)image_get_data (hdr);
data_size = image_get_data_size (hdr);
rc = fpga_load (dev, (void *)data, data_size);
}
break;
#if defined(CONFIG_FIT)
case IMAGE_FORMAT_FIT:
{
const void *fit_hdr = (const void *)fpga_data;
int noffset;
void *fit_data;
if (fit_uname == NULL) {
puts ("No FIT subimage unit name\n");
return 1;
}
if (!fit_check_format (fit_hdr)) {
puts ("Bad FIT image format\n");
return 1;
}
/* get fpga component image node offset */
noffset = fit_image_get_node (fit_hdr, fit_uname);
if (noffset < 0) {
printf ("Can't find '%s' FIT subimage\n", fit_uname);
return 1;
}
/* verify integrity */
if (!fit_image_check_hashes (fit_hdr, noffset)) {
puts ("Bad Data Hash\n");
return 1;
}
/* get fpga subimage data address and length */
if (fit_image_get_data (fit_hdr, noffset, &fit_data, &data_size)) {
puts ("Could not find fpga subimage data\n");
return 1;
}
rc = fpga_load (dev, fit_data, data_size);
}
break;
#endif
default:
puts ("** Unknown image type\n");
rc = FPGA_FAIL;
break;
}
break;
case FPGA_DUMP:
rc = fpga_dump (dev, fpga_data, data_size);
break;
default:
printf ("Unknown operation\n");
return cmd_usage(cmdtp);
}
return (rc);
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}
/*
* Map op to supported operations. We don't use a table since we
* would just have to relocate it from flash anyway.
*/
static int fpga_get_op (char *opstr)
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{
int op = FPGA_NONE;
if (!strcmp ("info", opstr)) {
op = FPGA_INFO;
} else if (!strcmp ("loadb", opstr)) {
op = FPGA_LOADB;
} else if (!strcmp ("load", opstr)) {
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op = FPGA_LOAD;
} else if (!strcmp ("loadmk", opstr)) {
op = FPGA_LOADMK;
} else if (!strcmp ("dump", opstr)) {
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op = FPGA_DUMP;
}
if (op == FPGA_NONE) {
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printf ("Unknown fpga operation \"%s\"\n", opstr);
}
return op;
}
U_BOOT_CMD (fpga, 6, 1, do_fpga,
"loadable FPGA image support",
"fpga [operation type] [device number] [image address] [image size]\n"
"fpga operations:\n"
"\tinfo\tlist known device information\n"
"\tload\tLoad device from memory buffer\n"
"\tloadb\tLoad device from bitstream buffer (Xilinx devices only)\n"
"\tloadmk\tLoad device generated with mkimage\n"
"\tdump\tLoad device to memory buffer"
#if defined(CONFIG_FIT)
"\n"
"\tFor loadmk operating on FIT format uImage address must include\n"
"\tsubimage unit name in the form of addr:<subimg_uname>"
#endif
);