diff options
Diffstat (limited to 'cpu/mpc8xxx')
| -rw-r--r-- | cpu/mpc8xxx/Makefile | 1 | ||||
| -rw-r--r-- | cpu/mpc8xxx/fdt.c | 55 |
2 files changed, 56 insertions, 0 deletions
diff --git a/cpu/mpc8xxx/Makefile b/cpu/mpc8xxx/Makefile index 5cb6814403..481f9e541d 100644 --- a/cpu/mpc8xxx/Makefile +++ b/cpu/mpc8xxx/Makefile @@ -11,6 +11,7 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib8xxx.a COBJS-y += cpu.o +COBJS-$(CONFIG_OF_LIBFDT) += fdt.o COBJS-$(CONFIG_PCI) += pci_cfg.o SRCS := $(START:.o=.S) $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c) diff --git a/cpu/mpc8xxx/fdt.c b/cpu/mpc8xxx/fdt.c new file mode 100644 index 0000000000..3a9b5841b6 --- /dev/null +++ b/cpu/mpc8xxx/fdt.c @@ -0,0 +1,55 @@ +/* + * Copyright 2009 Freescale Semiconductor, Inc. + * + * This file is derived from cpu/mpc85xx/cpu.c and cpu/mpc86xx/cpu.c. + * Basically this file contains cpu specific common code for 85xx/86xx + * processors. + * 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 <libfdt.h> +#include <fdt_support.h> + +void ft_fixup_num_cores(void *blob) { + int off, num_cores, del_cores; + + del_cores = 0; + num_cores = cpu_numcores(); + + off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4); + while (off != -FDT_ERR_NOTFOUND) { + u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0); + + /* if we find a cpu node outside of what we expect delete it + * and reset the offset back to the start since we can't + * trust the offsets anymore + */ + if (*reg > num_cores-1) { + fdt_del_node(blob, off); + del_cores++; + off = -1; + } + off = fdt_node_offset_by_prop_value(blob, off, + "device_type", "cpu", 4); + } + debug ("%x core system found\n", num_cores); + debug ("deleted %d extra core entry entries from device tree\n", + del_cores); +} |