summaryrefslogtreecommitdiff
path: root/arch/powerpc/cpu/ppc4xx/kgdb.S
diff options
context:
space:
mode:
authorMinkyu Kang <mk7.kang@samsung.com>2010-05-10 15:20:50 +0900
committerMinkyu Kang <mk7.kang@samsung.com>2010-05-10 15:20:50 +0900
commit9d62f20d0861ef87460d073dc189c851715b46ae (patch)
tree43a05c86e947f01079879735ddf93218870df50b /arch/powerpc/cpu/ppc4xx/kgdb.S
parent6596753387c3310b86f75bebe464684d70651052 (diff)
parente0531f975ce124f4ebdd9c7b7b107673c5628f68 (diff)
downloadu-boot-imx-9d62f20d0861ef87460d073dc189c851715b46ae.zip
u-boot-imx-9d62f20d0861ef87460d073dc189c851715b46ae.tar.gz
u-boot-imx-9d62f20d0861ef87460d073dc189c851715b46ae.tar.bz2
Merge branch 'master' of git://git.denx.de/u-boot-arm
Conflicts: arch/arm/include/asm/mach-types.h common/serial.c Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Diffstat (limited to 'arch/powerpc/cpu/ppc4xx/kgdb.S')
-rw-r--r--arch/powerpc/cpu/ppc4xx/kgdb.S78
1 files changed, 78 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/ppc4xx/kgdb.S b/arch/powerpc/cpu/ppc4xx/kgdb.S
new file mode 100644
index 0000000..4227a4c
--- /dev/null
+++ b/arch/powerpc/cpu/ppc4xx/kgdb.S
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2000 Murray Jensen <Murray.Jensen@cmst.csiro.au>
+ *
+ * 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>
+#include <command.h>
+#include <ppc4xx.h>
+#include <version.h>
+
+#define CONFIG_405GP 1 /* needed for Linux kernel header files */
+#define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+
+#include <asm/cache.h>
+#include <asm/mmu.h>
+
+#if defined(CONFIG_CMD_KGDB)
+ /*
+ * cache flushing routines for kgdb
+ */
+
+ .globl kgdb_flush_cache_all
+kgdb_flush_cache_all:
+ /* icache */
+ iccci r0,r0 /* iccci invalidates the entire I cache */
+ /* dcache */
+ addi r6,0,0x0000 /* clear GPR 6 */
+ addi r7,r0, 128 /* do loop for # of dcache lines */
+ /* NOTE: dccci invalidates both */
+ mtctr r7 /* ways in the D cache */
+..dcloop:
+ dccci 0,r6 /* invalidate line */
+ addi r6,r6, 32 /* bump to next line */
+ bdnz ..dcloop
+ blr
+
+ .globl kgdb_flush_cache_range
+kgdb_flush_cache_range:
+ 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
+ mr r6,r3
+1: dcbst 0,r3
+ addi r3,r3,L1_CACHE_BYTES
+ bdnz 1b
+ sync /* wait for dcbst's to get to ram */
+ mtctr r4
+2: icbi 0,r6
+ addi r6,r6,L1_CACHE_BYTES
+ bdnz 2b
+ SYNC
+ blr
+
+#endif