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/*
* (C) Copyright 2003, Psyent Corporation <www.psyent.com>
* Scott McNutt <smcnutt@psyent.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
*/
#include <common.h>
#include <nios.h>
int checkcpu (void)
{
unsigned val;
unsigned rev_major;
unsigned rev_minor;
short nregs, hi_limit, lo_limit;
/* Get cpu version info */
val = rdctl (CTL_CPU_ID);
puts ("CPU: ");
printf ("%s", (val & 0x00008000) ? "Nios-16 " : "Nios-32 ");
rev_major = (val>>12) & 0x07;
rev_minor = (val>>4) & 0x0ff;
printf ("Rev. %d.%d (0x%04x)", rev_major, rev_minor,
val & 0xffff);
if (rev_major == 0x08)
printf (" [OpenCore (R) Plus]");
printf ("\n");
/* Check register file */
val = rdctl (CTL_WVALID);
lo_limit = val & 0x01f;
hi_limit = (val>>5) & 0x1f;
nregs = (hi_limit + 2) * 16;
printf ("Reg file size: %d LO_LIMIT/HI_LIMIT: %d/%d\n",
nregs, lo_limit, hi_limit);
return (0);
}
int do_reset (void)
{
/* trap 0 does the trick ... at least with the OCI debug
* present -- haven't tested without it yet (stm).
*/
disable_interrupts ();
ipri (1);
asm volatile ("trap 0\n");
/* No return ;-) */
return(0);
}
#if defined(CONFIG_WATCHDOG)
void watchdog_reset (void)
{
}
#endif /* CONFIG_WATCHDOG */
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