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/*
* (C) Copyright 2001
* Erik Theisen, Wave 7 Optics, etheisen@mindspring.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
*/
/*
* IBM 4XX DCR Functions
*/
#include <common.h>
#include <config.h>
#include <command.h>
#if defined(CONFIG_4xx) && (CONFIG_COMMANDS & CFG_CMD_SETGETDCR)
/* ======================================================================
* Interpreter command to retrieve an IBM PPC 4xx Device Control Register
* ======================================================================
*/
int do_getdcr ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[] )
{
unsigned short dcrn; /* Device Control Register Num */
unsigned long value; /* DCR's value */
unsigned long get_dcr(unsigned short);
/* Validate arguments */
if (argc < 2) {
printf("Usage:\n%s\n", cmdtp->usage);
return 1;
}
/* Get a DCR */
dcrn = (unsigned short)simple_strtoul(argv[ 1 ], NULL, 16);
value = get_dcr(dcrn);
printf("%04x: %08lx\n", dcrn, value);
return 0;
} /* do_getdcr */
/* ======================================================================
* Interpreter command to set an IBM PPC 4xx Device Control Register
* ======================================================================
*/
int do_setdcr ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
unsigned long get_dcr(unsigned short );
unsigned long set_dcr(unsigned short , unsigned long );
unsigned short dcrn; /* Device Control Register Num */
unsigned long value;
/* DCR's value */
int nbytes;
extern char console_buffer[];
/* Validate arguments */
if (argc < 2) {
printf("Usage:\n%s\n", cmdtp->usage);
return 1;
}
/* Set a DCR */
dcrn = (unsigned short)simple_strtoul(argv[1], NULL, 16);
do {
value = get_dcr(dcrn);
printf("%04x: %08lx", dcrn, value);
nbytes = readline(" ? ");
if (nbytes == 0) {
/*
* <CR> pressed as only input, don't modify current
* location and exit command.
*/
nbytes = 1;
return 0;
} else {
unsigned long i;
char *endp;
i = simple_strtoul(console_buffer, &endp, 16);
nbytes = endp - console_buffer;
if (nbytes)
set_dcr(dcrn, i);
}
} while (nbytes);
return 0;
} /* do_setdcr */
/***************************************************/
U_BOOT_CMD(
getdcr, 2, 1, do_getdcr,
"getdcr - Get an IBM PPC 4xx DCR's value\n",
"dcrn - return a DCR's value.\n"
);
U_BOOT_CMD(
setdcr, 2, 1, do_setdcr,
"setdcr - Set an IBM PPC 4xx DCR's value\n",
"dcrn - set a DCR's value.\n"
);
#endif /* CONFIG_4xx & CFG_CMD_SETGETDCR */
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