mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 13:56:30 +00:00
120 lines
3.3 KiB
C
120 lines
3.3 KiB
C
/*
|
|
* (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) && defined(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 */
|