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Diffstat (limited to 'common/cmd_fpga.c')
| -rw-r--r-- | common/cmd_fpga.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/common/cmd_fpga.c b/common/cmd_fpga.c new file mode 100644 index 0000000..4e4c4ab --- /dev/null +++ b/common/cmd_fpga.c @@ -0,0 +1,158 @@ +/* + * (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> +#include <cmd_fpga.h> +#include <fpga.h> +#if (CONFIG_COMMANDS & CFG_CMD_NET) +#include <net.h> +#endif + +#if 0 +#define FPGA_DEBUG +#endif + +#ifdef FPGA_DEBUG +#define PRINTF(fmt,args...) printf (fmt ,##args) +#else +#define PRINTF(fmt,args...) +#endif + +#if defined (CONFIG_FPGA) && ( CONFIG_COMMANDS & CFG_CMD_FPGA ) + +/* Local functions */ +static void fpga_usage ( cmd_tbl_t *cmdtp ); +static int fpga_get_op( char *opstr ); + +/* Local defines */ +#define FPGA_NONE -1 +#define FPGA_INFO 0 +#define FPGA_LOAD 1 +#define FPGA_DUMP 3 + +/* ------------------------------------------------------------------------- */ +/* 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 *argv[]) +{ + int op, dev = FPGA_INVALID_DEVICE; + size_t data_size = 0; + void *fpga_data = NULL; + char *devstr = getenv("fpga"); + char *datastr = getenv("fpgadata"); + + 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> */ + fpga_data = (void *)simple_strtoul( argv[3], NULL, 16 ); + PRINTF(__FUNCTION__": fpga_data = 0x%x\n", (uint)fpga_data ); + case 3: /* fpga <op> <dev | data addr> */ + dev = (int)simple_strtoul( argv[2], NULL, 16 ); + PRINTF(__FUNCTION__": device = %d\n", dev ); + /* FIXME - this is a really weak test */ + if (( argc == 3 ) && ( dev > fpga_count() )) { /* must be buffer ptr */ + PRINTF(__FUNCTION__": Assuming buffer pointer in arg 3\n"); + fpga_data = (void *)dev; + PRINTF(__FUNCTION__": fpga_data = 0x%x\n", (uint)fpga_data ); + dev = FPGA_INVALID_DEVICE; /* reset device num */ + } + case 2: /* fpga <op> */ + op = (int)fpga_get_op( argv[1] ); + break; + default: + PRINTF(__FUNCTION__": Too many or too few args (%d)\n", argc ); + op = FPGA_NONE; /* force usage display */ + break; + } + + switch ( op ) { + case FPGA_NONE: + fpga_usage( cmdtp ); + break; + + case FPGA_INFO: + fpga_info( dev ); + break; + + case FPGA_LOAD: + fpga_load( dev, fpga_data, data_size ); + break; + + case FPGA_DUMP: + fpga_dump( dev, fpga_data, data_size ); + break; + + default: + printf( "Unknown operation.\n" ); + fpga_usage( cmdtp ); + break; + } + return 0; +} + +static void fpga_usage ( cmd_tbl_t *cmdtp ) +{ + printf( "Usage:\n%s\n", cmdtp->usage ); +} + +/* + * 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 ) +{ + int op = FPGA_NONE; + + if (!strcmp ("info", opstr)) { + op = FPGA_INFO; + } + else if (!strcmp ("load", opstr)) { + op = FPGA_LOAD; + } + else if (!strcmp ("dump", opstr)) { + op = FPGA_DUMP; + } + + if ( op == FPGA_NONE ) { + printf ("Unknown fpga operation \"%s\"\n", opstr); + } + return op; +} + +#endif /* CONFIG_FPGA && CONFIG_COMMANDS & CFG_CMD_FPGA */ |