/* * (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 */