Initial revision

1 files changed, 73 insertions, 0 deletions

diff --git a/cpu/74xx_7xx/kgdb.S b/cpu/74xx_7xx/kgdb.S
new file mode 100644
index 0000000..c3132c2
--- /dev/null
+++ b/cpu/74xx_7xx/kgdb.S
@@ -0,0 +1,73 @@
+/*
+ *  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 02111-1307USA
+ */
+
+/* note - this won't work with the 74xx cpus.  needs more work [josh] */
+
+#include <config.h>
+#include <command.h>
+#include <74xx_7xx.h>
+#include <version.h>
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+
+#include <asm/cache.h>
+#include <asm/mmu.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
+
+ /*
+ * cache flushing routines for kgdb
+ */
+
+	.globl	kgdb_flush_cache_all
+kgdb_flush_cache_all:
+	lis	r3, IDC_INVALL@h
+	mtspr	DC_CST, r3
+	sync
+	lis	r3, IDC_INVALL@h
+	mtspr	IC_CST, r3
+	SYNC
+	blr
+
+	.globl	kgdb_flush_cache_range
+kgdb_flush_cache_range:
+	li	r5,CFG_CACHELINE_SIZE-1
+	andc	r3,r3,r5
+	subf	r4,r3,r4
+	add	r4,r4,r5
+	srwi.	r4,r4,CFG_CACHELINE_SHIFT
+	beqlr
+	mtctr	r4
+	mr	r6,r3
+1:	dcbst	0,r3
+	addi	r3,r3,CFG_CACHELINE_SIZE
+	bdnz	1b
+	sync				/* wait for dcbst's to get to ram */
+	mtctr	r4
+2:	icbi	0,r6
+	addi	r6,r6,CFG_CACHELINE_SIZE
+	bdnz	2b
+	SYNC
+	blr
+
+#endif /* CFG_CMD_KGDB */