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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/frv/lib/cache.S
Initial import
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+/* cache.S: cache management routines
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * 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.
+ */
+
+#include <asm/spr-regs.h>
+#include <asm/cache.h>
+
+ .text
+ .p2align 4
+
+###############################################################################
+#
+# Write back a range of dcache
+# - void frv_dcache_writeback(unsigned long start [GR8], unsigned long size [GR9])
+#
+###############################################################################
+ .globl frv_dcache_writeback
+ .type frv_dcache_writeback,@function
+frv_dcache_writeback:
+ andi gr8,~(L1_CACHE_BYTES-1),gr8
+
+2: dcf @(gr8,gr0)
+ addi gr8,#L1_CACHE_BYTES,gr8
+ cmp gr9,gr8,icc0
+ bhi icc0,#2,2b
+
+ membar
+ bralr
+ .size frv_dcache_writeback, .-frv_dcache_writeback
+
+##############################################################################
+#
+# Invalidate a range of dcache and icache
+# - void frv_cache_invalidate(unsigned long start [GR8], unsigned long end [GR9]);
+#
+###############################################################################
+ .globl frv_cache_invalidate
+ .type frv_cache_invalidate,@function
+frv_cache_invalidate:
+ andi gr8,~(L1_CACHE_BYTES-1),gr8
+
+2: dci @(gr8,gr0)
+ ici @(gr8,gr0)
+ addi gr8,#L1_CACHE_BYTES,gr8
+ cmp gr9,gr8,icc0
+ bhi icc0,#2,2b
+
+ membar
+ bralr
+ .size frv_cache_invalidate, .-frv_cache_invalidate
+
+##############################################################################
+#
+# Invalidate a range of icache
+# - void frv_icache_invalidate(unsigned long start [GR8], unsigned long end [GR9]);
+#
+###############################################################################
+ .globl frv_icache_invalidate
+ .type frv_icache_invalidate,@function
+frv_icache_invalidate:
+ andi gr8,~(L1_CACHE_BYTES-1),gr8
+
+2: ici @(gr8,gr0)
+ addi gr8,#L1_CACHE_BYTES,gr8
+ cmp gr9,gr8,icc0
+ bhi icc0,#2,2b
+
+ membar
+ bralr
+ .size frv_icache_invalidate, .-frv_icache_invalidate
+
+###############################################################################
+#
+# Write back and invalidate a range of dcache and icache
+# - void frv_cache_wback_inv(unsigned long start [GR8], unsigned long end [GR9])
+#
+###############################################################################
+ .globl frv_cache_wback_inv
+ .type frv_cache_wback_inv,@function
+frv_cache_wback_inv:
+ andi gr8,~(L1_CACHE_BYTES-1),gr8
+
+2: dcf @(gr8,gr0)
+ ici @(gr8,gr0)
+ addi gr8,#L1_CACHE_BYTES,gr8
+ cmp gr9,gr8,icc0
+ bhi icc0,#2,2b
+
+ membar
+ bralr
+ .size frv_cache_wback_inv, .-frv_cache_wback_inv