1 /* 2 * Copyright 2009 Freescale Semiconductor, Inc. 3 * 4 * This file is derived from arch/powerpc/cpu/mpc85xx/cpu.c and 5 * arch/powerpc/cpu/mpc86xx/cpu.c. Basically this file contains 6 * cpu specific common code for 85xx/86xx processors. 7 * See file CREDITS for list of people who contributed to this 8 * project. 9 * 10 * This program is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU General Public License as 12 * published by the Free Software Foundation; either version 2 of 13 * the License, or (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 23 * MA 02111-1307 USA 24 */ 25 26 #include <common.h> 27 #include <libfdt.h> 28 #include <fdt_support.h> 29 30 void ft_fixup_num_cores(void *blob) { 31 int off, num_cores, del_cores; 32 33 del_cores = 0; 34 num_cores = cpu_numcores(); 35 36 off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4); 37 while (off != -FDT_ERR_NOTFOUND) { 38 u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0); 39 40 /* if we find a cpu node outside of what we expect delete it 41 * and reset the offset back to the start since we can't 42 * trust the offsets anymore 43 */ 44 if (*reg > num_cores-1) { 45 fdt_del_node(blob, off); 46 del_cores++; 47 off = -1; 48 } 49 off = fdt_node_offset_by_prop_value(blob, off, 50 "device_type", "cpu", 4); 51 } 52 debug ("%x core system found\n", num_cores); 53 debug ("deleted %d extra core entry entries from device tree\n", 54 del_cores); 55 } 56