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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-ppc64/bootinfo.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-ppc64/bootinfo.h')
-rw-r--r--include/asm-ppc64/bootinfo.h70
1 files changed, 70 insertions, 0 deletions
diff --git a/include/asm-ppc64/bootinfo.h b/include/asm-ppc64/bootinfo.h
new file mode 100644
index 00000000000..f55e7cb48f4
--- /dev/null
+++ b/include/asm-ppc64/bootinfo.h
@@ -0,0 +1,70 @@
+/*
+ * Non-machine dependent bootinfo structure. Basic idea
+ * borrowed from the m68k.
+ *
+ * Copyright (C) 1999 Cort Dougan <cort@ppc.kernel.org>
+ * Copyright (c) 2001 PPC64 Team, 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.
+ */
+
+
+#ifndef _PPC64_BOOTINFO_H
+#define _PPC64_BOOTINFO_H
+
+#include <asm/types.h>
+
+/* We use a u32 for the type of the fields since they're written by
+ * the bootloader which is a 32-bit process and read by the kernel
+ * which is a 64-bit process. This way they can both agree on the
+ * size of the type.
+ */
+typedef u32 bi_rec_field;
+
+struct bi_record {
+ bi_rec_field tag; /* tag ID */
+ bi_rec_field size; /* size of record (in bytes) */
+ bi_rec_field data[0]; /* data */
+};
+
+#define BI_FIRST 0x1010 /* first record - marker */
+#define BI_LAST 0x1011 /* last record - marker */
+#define BI_CMD_LINE 0x1012
+#define BI_BOOTLOADER_ID 0x1013
+#define BI_INITRD 0x1014
+#define BI_SYSMAP 0x1015
+#define BI_MACHTYPE 0x1016
+
+static __inline__ struct bi_record * bi_rec_init(unsigned long addr)
+{
+ struct bi_record *bi_recs;
+ bi_recs = (struct bi_record *)_ALIGN(addr, PAGE_SIZE);
+ bi_recs->size = 0;
+ return bi_recs;
+}
+
+static __inline__ struct bi_record * bi_rec_alloc(struct bi_record *rec,
+ unsigned long args)
+{
+ rec = (struct bi_record *)((unsigned long)rec + rec->size);
+ rec->size = sizeof(struct bi_record) + args*sizeof(bi_rec_field);
+ return rec;
+}
+
+static __inline__ struct bi_record * bi_rec_alloc_bytes(struct bi_record *rec,
+ unsigned long bytes)
+{
+ rec = (struct bi_record *)((unsigned long)rec + rec->size);
+ rec->size = sizeof(struct bi_record) + bytes;
+ return rec;
+}
+
+static __inline__ struct bi_record * bi_rec_next(struct bi_record *rec)
+{
+ return (struct bi_record *)((unsigned long)rec + rec->size);
+}
+
+#endif /* _PPC64_BOOTINFO_H */