1/* 2 * include/asm-xtensa/bootparam.h 3 * 4 * Definition of the Linux/Xtensa boot parameter structure 5 * 6 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file "COPYING" in the main directory of this archive 8 * for more details. 9 * 10 * Copyright (C) 2001 - 2005 Tensilica Inc. 11 * 12 * (Concept borrowed from the 68K port) 13 */ 14 15#ifndef _XTENSA_BOOTPARAM_H 16#define _XTENSA_BOOTPARAM_H 17 18#define BP_VERSION 0x0001 19 20#define BP_TAG_COMMAND_LINE 0x1001 /* command line (0-terminated string)*/ 21#define BP_TAG_INITRD 0x1002 /* ramdisk addr and size (bp_meminfo) */ 22#define BP_TAG_MEMORY 0x1003 /* memory addr and size (bp_meminfo) */ 23#define BP_TAG_SERIAL_BAUDRATE 0x1004 /* baud rate of current console. */ 24#define BP_TAG_SERIAL_PORT 0x1005 /* serial device of current console */ 25#define BP_TAG_FDT 0x1006 /* flat device tree addr */ 26 27#define BP_TAG_FIRST 0x7B0B /* first tag with a version number */ 28#define BP_TAG_LAST 0x7E0B /* last tag */ 29 30#ifndef __ASSEMBLY__ 31 32/* All records are aligned to 4 bytes */ 33 34typedef struct bp_tag { 35 unsigned short id; /* tag id */ 36 unsigned short size; /* size of this record excluding the structure*/ 37 unsigned long data[0]; /* data */ 38} bp_tag_t; 39 40struct bp_meminfo { 41 unsigned long type; 42 unsigned long start; 43 unsigned long end; 44}; 45 46#define MEMORY_TYPE_CONVENTIONAL 0x1000 47#define MEMORY_TYPE_NONE 0x2000 48 49#endif 50#endif 51