1 files changed, 59 insertions, 0 deletions
diff --git a/post/cpu/ppc4xx/fpu.c b/post/cpu/ppc4xx/fpu.c
new file mode 100644
index 0000000..27e9ed0
--- /dev/null
+++ b/post/cpu/ppc4xx/fpu.c
@@ -0,0 +1,59 @@
+/*
+ * (C) Copyright 2007
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Author: Sergei Poselenov <sposelenov@emcraft.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 <config.h>
+
+#ifdef CONFIG_POST
+#if defined(CONFIG_440EP) || \
+    defined(CONFIG_440EPX)
+
+#include <ppc4xx.h>
+#include <asm/processor.h>
+
+
+int fpu_status(void)
+{
+	if (mfspr(ccr0) & CCR0_DAPUIB)
+		return 0; /* Disabled */
+	else
+		return 1; /* Enabled */
+}
+
+
+void fpu_disable(void)
+{
+	mtspr(ccr0, mfspr(ccr0) | CCR0_DAPUIB);
+	mtmsr(mfmsr() & ~MSR_FP);
+}
+
+
+void fpu_enable(void)
+{
+	mtspr(ccr0, mfspr(ccr0) & ~CCR0_DAPUIB);
+	mtmsr(mfmsr() | MSR_FP);
+}
+
+#endif
+#endif /* CONFIG_POST */