1 files changed, 83 insertions, 0 deletions
diff --git a/arch/ppc64/boot/piggyback.c b/arch/ppc64/boot/piggyback.c
new file mode 100644
index 00000000000..235c7a87269
--- /dev/null
+++ b/arch/ppc64/boot/piggyback.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2001 IBM Corp 
+ *
+ * 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 <stdio.h>
+#include <unistd.h>
+#include <string.h>
+
+extern long ce_exec_config[];
+
+int main(int argc, char *argv[])
+{
+	int i, cnt, pos, len;
+	unsigned int cksum, val;
+	unsigned char *lp;
+	unsigned char buf[8192];
+	char *varname;
+	if (argc != 2)
+	{
+		fprintf(stderr, "usage: %s name <in-file >out-file\n",
+			argv[0]);
+		exit(1);
+	}
+
+	varname = strrchr(argv[1], '/');
+	if (varname)
+		varname++;
+	else
+		varname = argv[1];
+
+	fprintf(stdout, "#\n");
+	fprintf(stdout, "# Miscellaneous data structures:\n");
+	fprintf(stdout, "# WARNING - this file is automatically generated!\n");
+	fprintf(stdout, "#\n");
+	fprintf(stdout, "\n");
+	fprintf(stdout, "\t.data\n");
+	fprintf(stdout, "\t.globl %s_data\n", varname);
+	fprintf(stdout, "%s_data:\n", varname);
+	pos = 0;
+	cksum = 0;
+	while ((len = read(0, buf, sizeof(buf))) > 0)
+	{
+		cnt = 0;
+		lp = (unsigned char *)buf;
+		len = (len + 3) & ~3;  /* Round up to longwords */
+		for (i = 0;  i < len;  i += 4)
+		{
+			if (cnt == 0)
+			{
+				fprintf(stdout, "\t.long\t");
+			}
+			fprintf(stdout, "0x%02X%02X%02X%02X", lp[0], lp[1], lp[2], lp[3]);
+			val = *(unsigned long *)lp;
+			cksum ^= val;
+			lp += 4;
+			if (++cnt == 4)
+			{
+				cnt = 0;
+				fprintf(stdout, " # %x \n", pos+i-12);
+				fflush(stdout);
+			} else
+			{
+				fprintf(stdout, ",");
+			}
+		}
+		if (cnt)
+		{
+			fprintf(stdout, "0\n");
+		}
+		pos += len;
+	}
+	fprintf(stdout, "\t.globl %s_len\n", varname);
+	fprintf(stdout, "%s_len:\t.long\t0x%x\n", varname, pos);
+	fflush(stdout);
+	fclose(stdout);
+	fprintf(stderr, "cksum = %x\n", cksum);
+	exit(0);
+}
+