Initial revision

1 files changed, 106 insertions, 0 deletions

diff --git a/post/cpu/string.c b/post/cpu/string.c
new file mode 100644
index 0000000..a19a755
--- /dev/null
+++ b/post/cpu/string.c
@@ -0,0 +1,106 @@
+/*
+ * (C) Copyright 2002
+ * 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 <common.h>
+
+/*
+ * CPU test
+ * Load/store string instructions:	lswi, stswi, lswx, stswx
+ *
+ * Several consecutive bytes from a source memory buffer are loaded
+ * left to right into GPRs. After that, the bytes are stored
+ * from the GPRs into a target memory buffer. The contents
+ * of the source and target buffers are then compared.
+ */
+
+#ifdef CONFIG_POST
+
+#include <post.h>
+#include "cpu_asm.h"
+
+#if CONFIG_POST & CFG_POST_CPU
+
+extern void cpu_post_exec_02 (ulong *code, ulong op1, ulong op2);
+extern void cpu_post_exec_04 (ulong *code, ulong op1, ulong op2, ulong op3,
+    ulong op4);
+
+#include <bedbug/regs.h>
+int cpu_post_test_string (void)
+{
+    int ret = 0;
+    unsigned int i;
+
+    if (ret == 0)
+    {
+	char src [31], dst [31];
+
+    	ulong code[] =
+	{
+	    ASM_LSWI(5, 3, 31),
+	    ASM_STSWI(5, 4, 31),
+	    ASM_BLR,
+	};
+
+	for (i = 0; i < sizeof(src); i ++)
+	{
+	    src[i] = (char) i;
+	    dst[i] = 0;
+	}
+
+	cpu_post_exec_02(code, (ulong)src, (ulong)dst);
+
+	ret = memcmp(src, dst, sizeof(dst)) == 0 ? 0 : -1;
+    }
+
+    if (ret == 0)
+    {
+	char src [95], dst [95];
+
+    	ulong code[] =
+	{
+	    ASM_LSWX(8, 3, 5),
+	    ASM_STSWX(8, 4, 5),
+	    ASM_BLR,
+	};
+
+	for (i = 0; i < sizeof(src); i ++)
+	{
+	    src[i] = (char) i;
+	    dst[i] = 0;
+	}
+
+	cpu_post_exec_04(code, (ulong)src, (ulong)dst, 0, sizeof(src));
+
+	ret = memcmp(src, dst, sizeof(dst)) == 0 ? 0 : -1;
+    }
+
+    if (ret != 0)
+    {
+        post_log ("Error at string test !\n");
+    }
+
+    return ret;
+}
+
+#endif
+#endif