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Viewing changes to roms/u-boot/include/linux/edd.h

  • Committer: Phil Dennis-Jordan
  • Date: 2017-07-21 08:03:43 UTC
  • mfrom: (1.1.1)
  • Revision ID: phil@philjordan.eu-20170721080343-2yr2vdj7713czahv
New upstream release 2.9.0.

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roms/u-boot/include/linux/edd.h
 
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/*
 
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 * linux/include/linux/edd.h
 
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 *  Copyright (C) 2002, 2003, 2004 Dell Inc.
 
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 *  by Matt Domsch <Matt_Domsch@dell.com>
 
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 *
 
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 * structures and definitions for the int 13h, ax={41,48}h
 
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 * BIOS Enhanced Disk Drive Services
 
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 * This is based on the T13 group document D1572 Revision 0 (August 14 2002)
 
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 * available at http://www.t13.org/docs2002/d1572r0.pdf.  It is
 
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 * very similar to D1484 Revision 3 http://www.t13.org/docs2002/d1484r3.pdf
 
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 *
 
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 * In a nutshell, arch/{i386,x86_64}/boot/setup.S populates a scratch
 
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 * table in the boot_params that contains a list of BIOS-enumerated
 
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 * boot devices.
 
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 * In arch/{i386,x86_64}/kernel/setup.c, this information is
 
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 * transferred into the edd structure, and in drivers/firmware/edd.c, that
 
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 * information is used to identify BIOS boot disk.  The code in setup.S
 
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 * is very sensitive to the size of these structures.
 
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 *
 
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 * This program is free software; you can redistribute it and/or modify
 
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 * it under the terms of the GNU General Public License v2.0 as published by
 
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 * the Free Software Foundation
 
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 *
 
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 * This program is distributed in the hope that it will be useful,
 
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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 * GNU General Public License for more details.
 
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 *
 
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 */
 
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#ifndef _LINUX_EDD_H
 
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#define _LINUX_EDD_H
 
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#include <linux/types.h>
 
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#define EDDNR 0x1e9             /* addr of number of edd_info structs at EDDBUF
 
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                                   in boot_params - treat this as 1 byte  */
 
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#define EDDBUF  0xd00           /* addr of edd_info structs in boot_params */
 
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#define EDDMAXNR 6              /* number of edd_info structs starting at EDDBUF  */
 
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#define EDDEXTSIZE 8            /* change these if you muck with the structures */
 
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#define EDDPARMSIZE 74
 
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#define CHECKEXTENSIONSPRESENT 0x41
 
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#define GETDEVICEPARAMETERS 0x48
 
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#define LEGACYGETDEVICEPARAMETERS 0x08
 
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#define EDDMAGIC1 0x55AA
 
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#define EDDMAGIC2 0xAA55
 
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#define READ_SECTORS 0x02         /* int13 AH=0x02 is READ_SECTORS command */
 
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#define EDD_MBR_SIG_OFFSET 0x1B8  /* offset of signature in the MBR */
 
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#define EDD_MBR_SIG_BUF    0x290  /* addr in boot params */
 
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#define EDD_MBR_SIG_MAX 16        /* max number of signatures to store */
 
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#define EDD_MBR_SIG_NR_BUF 0x1ea  /* addr of number of MBR signtaures at EDD_MBR_SIG_BUF
 
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                                     in boot_params - treat this as 1 byte  */
 
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#ifndef __ASSEMBLY__
 
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#define EDD_EXT_FIXED_DISK_ACCESS           (1 << 0)
 
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#define EDD_EXT_DEVICE_LOCKING_AND_EJECTING (1 << 1)
 
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#define EDD_EXT_ENHANCED_DISK_DRIVE_SUPPORT (1 << 2)
 
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#define EDD_EXT_64BIT_EXTENSIONS            (1 << 3)
 
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#define EDD_INFO_DMA_BOUNDARY_ERROR_TRANSPARENT (1 << 0)
 
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#define EDD_INFO_GEOMETRY_VALID                (1 << 1)
 
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#define EDD_INFO_REMOVABLE                     (1 << 2)
 
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#define EDD_INFO_WRITE_VERIFY                  (1 << 3)
 
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#define EDD_INFO_MEDIA_CHANGE_NOTIFICATION     (1 << 4)
 
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#define EDD_INFO_LOCKABLE                      (1 << 5)
 
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#define EDD_INFO_NO_MEDIA_PRESENT              (1 << 6)
 
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#define EDD_INFO_USE_INT13_FN50                (1 << 7)
 
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struct edd_device_params {
 
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        __u16 length;
 
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        __u16 info_flags;
 
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        __u32 num_default_cylinders;
 
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        __u32 num_default_heads;
 
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        __u32 sectors_per_track;
 
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        __u64 number_of_sectors;
 
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        __u16 bytes_per_sector;
 
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        __u32 dpte_ptr;         /* 0xFFFFFFFF for our purposes */
 
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        __u16 key;              /* = 0xBEDD */
 
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        __u8 device_path_info_length;   /* = 44 */
 
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        __u8 reserved2;
 
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        __u16 reserved3;
 
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        __u8 host_bus_type[4];
 
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        __u8 interface_type[8];
 
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        union {
 
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                struct {
 
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                        __u16 base_address;
 
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                        __u16 reserved1;
 
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                        __u32 reserved2;
 
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                } __attribute__ ((packed)) isa;
 
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                struct {
 
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                        __u8 bus;
 
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                        __u8 slot;
 
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                        __u8 function;
 
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                        __u8 channel;
 
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                        __u32 reserved;
 
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                } __attribute__ ((packed)) pci;
 
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                /* pcix is same as pci */
 
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                struct {
 
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                        __u64 reserved;
 
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                } __attribute__ ((packed)) ibnd;
 
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                struct {
 
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                        __u64 reserved;
 
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                } __attribute__ ((packed)) xprs;
 
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                struct {
 
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                        __u64 reserved;
 
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                } __attribute__ ((packed)) htpt;
 
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                struct {
 
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                        __u64 reserved;
 
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                } __attribute__ ((packed)) unknown;
 
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        } interface_path;
 
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        union {
 
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                struct {
 
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                        __u8 device;
 
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                        __u8 reserved1;
 
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                        __u16 reserved2;
 
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                        __u32 reserved3;
 
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                        __u64 reserved4;
 
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                } __attribute__ ((packed)) ata;
 
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                struct {
 
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                        __u8 device;
 
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                        __u8 lun;
 
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                        __u8 reserved1;
 
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                        __u8 reserved2;
 
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                        __u32 reserved3;
 
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                        __u64 reserved4;
 
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                } __attribute__ ((packed)) atapi;
 
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                struct {
 
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                        __u16 id;
 
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                        __u64 lun;
 
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                        __u16 reserved1;
 
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                        __u32 reserved2;
 
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                } __attribute__ ((packed)) scsi;
 
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                struct {
 
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                        __u64 serial_number;
 
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                        __u64 reserved;
 
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                } __attribute__ ((packed)) usb;
 
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                struct {
 
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                        __u64 eui;
 
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                        __u64 reserved;
 
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                } __attribute__ ((packed)) i1394;
 
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                struct {
 
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                        __u64 wwid;
 
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                        __u64 lun;
 
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                } __attribute__ ((packed)) fibre;
 
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                struct {
 
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                        __u64 identity_tag;
 
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                        __u64 reserved;
 
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                } __attribute__ ((packed)) i2o;
 
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                struct {
 
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                        __u32 array_number;
 
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                        __u32 reserved1;
 
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                        __u64 reserved2;
 
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                } __attribute__ ((packed)) raid;
 
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                struct {
 
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                        __u8 device;
 
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                        __u8 reserved1;
 
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                        __u16 reserved2;
 
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                        __u32 reserved3;
 
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                        __u64 reserved4;
 
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                } __attribute__ ((packed)) sata;
 
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                struct {
 
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                        __u64 reserved1;
 
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                        __u64 reserved2;
 
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                } __attribute__ ((packed)) unknown;
 
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        } device_path;
 
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        __u8 reserved4;
 
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        __u8 checksum;
 
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} __attribute__ ((packed));
 
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struct edd_info {
 
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        __u8 device;
 
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        __u8 version;
 
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        __u16 interface_support;
 
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        __u16 legacy_max_cylinder;
 
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        __u8 legacy_max_head;
 
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        __u8 legacy_sectors_per_track;
 
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        struct edd_device_params params;
 
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} __attribute__ ((packed));
 
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struct edd {
 
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        unsigned int mbr_signature[EDD_MBR_SIG_MAX];
 
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        struct edd_info edd_info[EDDMAXNR];
 
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        unsigned char mbr_signature_nr;
 
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        unsigned char edd_info_nr;
 
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};
 
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#ifdef __KERNEL__
 
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extern struct edd edd;
 
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#endif /* __KERNEL__ */
 
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#endif                          /*!__ASSEMBLY__ */
 
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#endif                          /* _LINUX_EDD_H */