1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Definition of the Linux/Xtensa boot parameter structure 4 * 5 * Copyright (C) 2001 - 2009 Tensilica Inc. 6 * 7 * (Concept borrowed from the 68K port) 8 */ 9 10 #ifndef _XTENSA_BOOTPARAM_H 11 #define _XTENSA_BOOTPARAM_H 12 13 #define BP_VERSION 0x0001 14 15 #define BP_TAG_COMMAND_LINE 0x1001 /* command line (0-terminated string)*/ 16 #define BP_TAG_INITRD 0x1002 /* ramdisk addr and size (bp_meminfo) */ 17 #define BP_TAG_MEMORY 0x1003 /* memory addr and size (bp_meminfo) */ 18 #define BP_TAG_SERIAL_BAUDRATE 0x1004 /* baud rate of current console */ 19 #define BP_TAG_SERIAL_PORT 0x1005 /* serial device of current console */ 20 #define BP_TAG_FDT 0x1006 /* flat device tree */ 21 22 #define BP_TAG_FIRST 0x7B0B /* first tag with a version number */ 23 #define BP_TAG_LAST 0x7E0B /* last tag */ 24 25 #ifndef __ASSEMBLY__ 26 27 /* All records are aligned to 4 bytes */ 28 29 struct bp_tag { 30 unsigned short id; /* tag id */ 31 unsigned short size; /* size of this record excluding the structure*/ 32 unsigned long data[0]; /* data */ 33 }; 34 35 #define bp_tag_next(tag) \ 36 ((struct bp_tag *)((unsigned long)((tag) + 1) + (tag)->size)) 37 38 struct meminfo { 39 unsigned long type; 40 unsigned long start; 41 unsigned long end; 42 }; 43 44 #define MEMORY_TYPE_CONVENTIONAL 0x1000 45 #define MEMORY_TYPE_NONE 0x2000 46 47 struct sysmem_info { 48 int nr_banks; 49 struct meminfo bank[0]; 50 }; 51 52 #endif 53 #endif 54