summaryrefslogtreecommitdiff
path: root/arch/powerpc/cpu/mpc8xxx/fdt.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/cpu/mpc8xxx/fdt.c')
-rw-r--r--arch/powerpc/cpu/mpc8xxx/fdt.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc8xxx/fdt.c b/arch/powerpc/cpu/mpc8xxx/fdt.c
new file mode 100644
index 0000000..ccefaf5
--- /dev/null
+++ b/arch/powerpc/cpu/mpc8xxx/fdt.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2009 Freescale Semiconductor, Inc.
+ *
+ * This file is derived from arch/powerpc/cpu/mpc85xx/cpu.c and
+ * arch/powerpc/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);
+}