Move arch/ppc to arch/powerpc

As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.

Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Anatolij Gustschin <agust@denx.de>

1 files changed, 65 insertions, 0 deletions

diff --git a/arch/powerpc/lib/ticks.S b/arch/powerpc/lib/ticks.S
new file mode 100644
index 0000000000..b8d25b7f46
--- /dev/null
+++ b/arch/powerpc/lib/ticks.S
@@ -0,0 +1,65 @@
+/*
+ * (C) Copyright 2000, 2001
+ * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
+ *  base on code by
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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 <ppc_asm.tmpl>
+#include <ppc_defs.h>
+#include <config.h>
+#include <watchdog.h>
+
+/*
+ * unsigned long long get_ticks(void);
+ *
+ * read timebase as "long long"
+ */
+	.globl	get_ticks
+get_ticks:
+1:	mftbu	r3
+	mftb	r4
+	mftbu	r5
+	cmp	0,r3,r5
+	bne	1b
+	blr
+
+/*
+ * Delay for a number of ticks
+ */
+	.globl	wait_ticks
+wait_ticks:
+	mflr	r8		/* save link register */
+	mr	r7, r3		/* save tick count */
+	bl	get_ticks	/* Get start time */
+
+	/* Calculate end time */
+	addc    r7, r4, r7	/* Compute end time lower */
+	addze	r6, r3		/*     and end time upper */
+
+	WATCHDOG_RESET		/* Trigger watchdog, if needed */
+1:	bl	get_ticks	/* Get current time */
+	subfc	r4, r4, r7	/* Subtract current time from end time */
+	subfe.	r3, r3, r6
+	bge	1b		/* Loop until time expired */
+
+	mtlr	r8		/* restore link register */
+	blr