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Diffstat (limited to 'contrib/syslinux-4.02/memdisk/mstructs.h')
| -rw-r--r-- | contrib/syslinux-4.02/memdisk/mstructs.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/memdisk/mstructs.h b/contrib/syslinux-4.02/memdisk/mstructs.h new file mode 100644 index 0000000..fecbff4 --- /dev/null +++ b/contrib/syslinux-4.02/memdisk/mstructs.h @@ -0,0 +1,178 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 2001-2009 H. Peter Anvin - All Rights Reserved + * Copyright 2009-2010 Intel Corporation; author: H. Peter Anvin + * Portions copyright 2009-2010 Shao Miller + * [El Torito code, mBFT, "safe hook"] + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, Inc., 53 Temple Place Ste 330, + * Boston MA 02111-1307, USA; either version 2 of the License, or + * (at your option) any later version; incorporated herein by reference. + * + * ----------------------------------------------------------------------- */ + +/* These structures are common to MEMDISK and MDISKCHK.COM */ + +#include <stdint.h> +#include "compiler.h" + +struct seg_off { + uint16_t offset; + uint16_t segment; +}; + +typedef union { + struct seg_off seg_off; + uint32_t uint32; +} real_addr_t; + +/* Forward declaration */ +struct mBFT; + +MEMDISK_PACKED_PREFIX +struct safe_hook { + uint8_t jump[3]; /* Max. three bytes for jump */ + uint8_t signature[8]; /* "$INT13SF" */ + uint8_t vendor[8]; /* "MEMDISK " */ + real_addr_t old_hook; /* SEG:OFF for previous INT 13h hook */ + uint32_t flags; /* "Safe hook" flags */ + /* The next field is a MEMDISK extension to the "safe hook" structure */ + uint32_t mbft; +} MEMDISK_PACKED_POSTFIX; + +struct memdisk_header { + uint16_t int13_offs; + uint16_t int15_offs; + uint16_t patch_offs; + uint16_t total_size; + uint16_t iret_offs; + struct safe_hook safe_hook; +}; + +MEMDISK_PACKED_PREFIX +/* EDD disk parameter table */ +struct edd_dpt { + uint16_t len; /* Length of table */ + uint16_t flags; /* Information flags */ + uint32_t c; /* Physical cylinders (count!) */ + uint32_t h; /* Physical heads (count!) */ + uint32_t s; /* Physical sectors/track (count!) */ + uint64_t sectors; /* Total sectors */ + uint16_t bytespersec; /* Bytes/sector */ + real_addr_t dpte; /* DPTE pointer */ + uint16_t dpikey; /* Device Path Info magic */ + uint8_t dpilen; /* Device Path Info length */ + uint8_t res1; /* Reserved */ + uint16_t res2; /* Reserved */ + uint8_t bustype[4]; /* Host bus type */ + uint8_t inttype[8]; /* Interface type */ + uint64_t intpath; /* Interface path */ + uint64_t devpath[2]; /* Device path (double QuadWord!) */ + uint8_t res3; /* Reserved */ + uint8_t chksum; /* DPI checksum */ +} MEMDISK_PACKED_POSTFIX; + +/* Requirement for struct edd4_cd_pkt */ +#include "../memdisk/eltorito.h" + +/* Official MEMDISK Info structure ("MDI") */ +MEMDISK_PACKED_PREFIX +struct mdi { + const uint16_t bytes; + const uint8_t version_minor; + const uint8_t version_major; + + uint32_t diskbuf; + uint32_t disksize; + real_addr_t cmdline; + + real_addr_t oldint13; + real_addr_t oldint15; + + uint16_t olddosmem; + uint8_t bootloaderid; + uint8_t sector_shift; + + uint16_t dpt_ptr; +} MEMDISK_PACKED_POSTFIX; + +/* Requirement for struct acpi_description_header */ +#include "../memdisk/acpi.h" + +MEMDISK_PACKED_PREFIX +struct mBFT { + struct acpi_description_header acpi; + uint32_t safe_hook; /* "Safe hook" physical address */ + struct mdi mdi; +} MEMDISK_PACKED_POSTFIX; + +/* The Disk Parameter Table may be required */ +typedef union { + struct hd_dpt { + uint16_t max_cyl; /* Max cylinder */ + uint8_t max_head; /* Max head */ + uint8_t junk1[5]; /* Obsolete junk, leave at zero */ + uint8_t ctrl; /* Control byte */ + uint8_t junk2[7]; /* More obsolete junk */ + } hd; + struct fd_dpt { + uint8_t specify1; /* "First specify byte" */ + uint8_t specify2; /* "Second specify byte" */ + uint8_t delay; /* Delay until motor turn off */ + uint8_t sectors; /* Sectors/track */ + + uint8_t bps; /* Bytes/sector (02h = 512) */ + uint8_t isgap; /* Length of intersector gap */ + uint8_t dlen; /* Data length (0FFh) */ + uint8_t fgap; /* Formatting gap */ + + uint8_t ffill; /* Format fill byte */ + uint8_t settle; /* Head settle time (ms) */ + uint8_t mstart; /* Motor start time */ + uint8_t maxtrack; /* Maximum track number */ + + uint8_t rate; /* Data transfer rate */ + uint8_t cmos; /* CMOS type */ + uint8_t pad[2]; + + uint32_t old_fd_dpt; /* Extension: pointer to old INT 1Eh */ + } fd; +} dpt_t; + +MEMDISK_PACKED_PREFIX +struct patch_area { + struct mdi mdi; + + uint8_t driveshiftlimit; /* Do not shift drives above this region */ + uint8_t _pad2; /* Pad to DWORD */ + uint16_t _pad3; /* Pad to QWORD */ + + uint16_t memint1588; + + uint16_t cylinders; + uint16_t heads; + uint32_t sectors; + + uint32_t mem1mb; + uint32_t mem16mb; + + uint8_t driveno; + uint8_t drivetype; + uint8_t drivecnt; + uint8_t configflags; + +#define CONFIG_READONLY 0x01 +#define CONFIG_RAW 0x02 +#define CONFIG_SAFEINT 0x04 +#define CONFIG_BIGRAW 0x08 /* MUST be 8! */ +#define CONFIG_MODEMASK 0x0e + + uint16_t mystack; + uint16_t statusptr; + + dpt_t dpt; + struct edd_dpt edd_dpt; + struct edd4_cd_pkt cd_pkt; /* Only really in a memdisk_iso_* hook */ +} MEMDISK_PACKED_POSTFIX; |