mirror of
https://github.com/freebsd/freebsd-src
synced 2024-10-17 05:43:59 +00:00
Defines for parsing linux ATAGs lists.
This commit is contained in:
parent
c7e9a659ca
commit
a6c5f82686
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=237069
129
sys/arm/include/atags.h
Normal file
129
sys/arm/include/atags.h
Normal file
|
@ -0,0 +1,129 @@
|
|||
/*-
|
||||
* Copyright (c) 2012 M. Warner Losh.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#ifndef __MACHINE_ATAGS_H__
|
||||
#define __MACHINE_ATAGS_H__
|
||||
|
||||
/*
|
||||
* Linux boot ABI compatable ATAG definitions. All these structures
|
||||
* assume tight packing, but since they are all uint32_t's, I've not
|
||||
* bothered to do the usual alignment dance.
|
||||
*/
|
||||
|
||||
#define LBABI_MAX_COMMAND_LINE 1024
|
||||
|
||||
struct arm_lbabi_header
|
||||
{
|
||||
uint32_t size; /* Size of this node, including header */
|
||||
uint32_t tag; /* Node type */
|
||||
};
|
||||
|
||||
#define ATAG_NONE 0x00000000 /* End of atags list */
|
||||
#define ATAG_CORE 0x54410001 /* List must start with ATAG_CORE */
|
||||
#define ATAG_MEM 0x54410002 /* Multiple ATAG_MEM nodes possible */
|
||||
#define ATAG_VIDEOTEXT 0x54410003 /* Video parameters */
|
||||
#define ATAG_RAMDISK 0x54410004 /* Describes the ramdisk parameters */
|
||||
#define ATAG_INITRD 0x54410005 /* Deprecated ramdisk -- used va not pa */
|
||||
#define ATAG_INITRD2 0x54420005 /* compressed ramdisk image */
|
||||
#define ATAG_SERIAL 0x54410006 /* 64-bits of serial number */
|
||||
#define ATAG_REVISION 0x54410007 /* Board revision */
|
||||
#define ATAG_VIDEOLFB 0x54410008 /* vesafb framebuffer */
|
||||
#define ATAG_CMDLINE 0x54410009 /* Command line */
|
||||
|
||||
/*
|
||||
* ATAG_CORE data
|
||||
*/
|
||||
struct arm_lbabi_core
|
||||
{
|
||||
uint32_t flags; /* bit 0 == read-only */
|
||||
uint32_t pagesize;
|
||||
uint32_t rootdev;
|
||||
};
|
||||
|
||||
/*
|
||||
* ATAG_MEM data -- Can be more than one to describe different
|
||||
* banks.
|
||||
*/
|
||||
struct arm_lbabi_mem32
|
||||
{
|
||||
uint32_t size;
|
||||
uint32_t start; /* start of physical memory */
|
||||
};
|
||||
|
||||
/*
|
||||
* ATAG_INITRD2 - Compressed ramdisk image details
|
||||
*/
|
||||
struct arm_lbabi_initrd
|
||||
{
|
||||
uint32_t start; /* pa of start */
|
||||
uint32_t size; /* How big the ram disk is */
|
||||
};
|
||||
|
||||
/*
|
||||
* ATAG_SERIAL - serial number
|
||||
*/
|
||||
struct arm_lbabi_serial_number
|
||||
{
|
||||
uint32_t low;
|
||||
uint32_t high;
|
||||
};
|
||||
|
||||
/*
|
||||
* ATAG_REVISION - board revision
|
||||
*/
|
||||
struct arm_lbabi_revision
|
||||
{
|
||||
uint32_t rev;
|
||||
};
|
||||
|
||||
/*
|
||||
* ATAG_CMDLINE - Command line from uboot
|
||||
*/
|
||||
struct arm_lbabi_command_line
|
||||
{
|
||||
char command[1]; /* Minimum command length */
|
||||
};
|
||||
|
||||
struct arm_lbabi_tag
|
||||
{
|
||||
struct arm_lbabi_header tag_hdr;
|
||||
union {
|
||||
struct arm_lbabi_core tag_core;
|
||||
struct arm_lbabi_mem32 tag_mem;
|
||||
struct arm_lbabi_initrd tag_initrd;
|
||||
struct arm_lbabi_serial_number tag_sn;
|
||||
struct arm_lbabi_revision tag_rev;
|
||||
struct arm_lbabi_command_line tag_cmd;
|
||||
} u;
|
||||
};
|
||||
|
||||
#define ATAG_TAG(a) (a)->tag_hdr.tag
|
||||
#define ATAG_SIZE(a) (a)->tag_hdr.size
|
||||
#define ATAG_NEXT(a) (struct arm_lbabi_tag *)((char *)(a) + ATAG_SIZE(a))
|
||||
|
||||
#endif /* __MACHINE_ATAGS_H__ */
|
Loading…
Reference in a new issue