xtensa: add support for the xtensa processor architecture [2/2]
The Xtensa processor architecture is a configurable, extensible,
and synthesizable 32-bit RISC processor core provided by Tensilica, inc.
This is the second part of the basic architecture port, adding the
'arch/xtensa' directory and a readme file.
Signed-off-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/xtensa/include/asm/bootparam.h b/arch/xtensa/include/asm/bootparam.h
new file mode 100644
index 0000000..a2a9013
--- /dev/null
+++ b/arch/xtensa/include/asm/bootparam.h
@@ -0,0 +1,54 @@
+/*
+ * Definition of the Linux/Xtensa boot parameter structure
+ *
+ * Copyright (C) 2001 - 2009 Tensilica Inc.
+ *
+ * (Concept borrowed from the 68K port)
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _XTENSA_BOOTPARAM_H
+#define _XTENSA_BOOTPARAM_H
+
+#define BP_VERSION 0x0001
+
+#define BP_TAG_COMMAND_LINE 0x1001 /* command line (0-terminated string)*/
+#define BP_TAG_INITRD 0x1002 /* ramdisk addr and size (bp_meminfo) */
+#define BP_TAG_MEMORY 0x1003 /* memory addr and size (bp_meminfo) */
+#define BP_TAG_SERIAL_BAUDRATE 0x1004 /* baud rate of current console */
+#define BP_TAG_SERIAL_PORT 0x1005 /* serial device of current console */
+#define BP_TAG_FDT 0x1006 /* flat device tree */
+
+#define BP_TAG_FIRST 0x7B0B /* first tag with a version number */
+#define BP_TAG_LAST 0x7E0B /* last tag */
+
+#ifndef __ASSEMBLY__
+
+/* All records are aligned to 4 bytes */
+
+struct bp_tag {
+ unsigned short id; /* tag id */
+ unsigned short size; /* size of this record excluding the structure*/
+ unsigned long data[0]; /* data */
+};
+
+#define bp_tag_next(tag) \
+ ((struct bp_tag *)((unsigned long)((tag) + 1) + (tag)->size))
+
+struct meminfo {
+ unsigned long type;
+ unsigned long start;
+ unsigned long end;
+};
+
+#define MEMORY_TYPE_CONVENTIONAL 0x1000
+#define MEMORY_TYPE_NONE 0x2000
+
+struct sysmem_info {
+ int nr_banks;
+ struct meminfo bank[0];
+};
+
+#endif
+#endif