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-rw-r--r--arch/ppc64/boot/piggyback.c83
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 000000000000..235c7a87269c
--- /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);
+}
+