* Copyright (C) 2000, 2001,2002 Wolfgang Denk <wd@denx.de>
* Copyright Freescale Semiconductor, Inc. 2004, 2006.
*
- * 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
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+
+#include <asm/cache.h>
/*------------------------------------------------------------------------------- */
/* Function: ppcDcbf */
ppcSync:
sync
blr
+
+/*
+ * Write any modified data cache blocks out to memory and invalidate them.
+ * Does not invalidate the corresponding instruction cache blocks.
+ *
+ * flush_dcache_range(unsigned long start, unsigned long stop)
+ */
+_GLOBAL(flush_dcache_range)
+#if defined(CONFIG_4xx) || defined(CONFIG_MPC86xx)
+ li r5,L1_CACHE_BYTES-1
+ andc r3,r3,r5
+ subf r4,r3,r4
+ add r4,r4,r5
+ srwi. r4,r4,L1_CACHE_SHIFT
+ beqlr
+ mtctr r4
+
+1: dcbf 0,r3
+ addi r3,r3,L1_CACHE_BYTES
+ bdnz 1b
+ sync /* wait for dcbst's to get to ram */
+#endif
+ blr
+
+/*
+ * Like above, but invalidate the D-cache. This is used by the 8xx
+ * to invalidate the cache so the PPC core doesn't get stale data
+ * from the CPM (no cache snooping here :-).
+ *
+ * invalidate_dcache_range(unsigned long start, unsigned long stop)
+ */
+_GLOBAL(invalidate_dcache_range)
+#if defined(CONFIG_4xx) || defined(CONFIG_MPC86xx)
+ li r5,L1_CACHE_BYTES-1
+ andc r3,r3,r5
+ subf r4,r3,r4
+ add r4,r4,r5
+ srwi. r4,r4,L1_CACHE_SHIFT
+ beqlr
+ mtctr r4
+
+ sync
+1: dcbi 0,r3
+ addi r3,r3,L1_CACHE_BYTES
+ bdnz 1b
+ sync /* wait for dcbi's to get to ram */
+#endif
+ blr
+