/*      $NetBSD: bootinfo.h,v 1.32 2025/04/30 05:15:08 imil Exp $       */

/*
* Copyright (c) 1997
*      Matthias Drochner.  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 ``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 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.
*
*/

#ifndef _X86_BOOTINFO_H_
#define _X86_BOOTINFO_H_

#define BTINFO_BOOTPATH         0
#define BTINFO_ROOTDEVICE       1
#define BTINFO_BOOTDISK         3
#define BTINFO_NETIF            4
#define BTINFO_CONSOLE          6
#define BTINFO_BIOSGEOM         7
#define BTINFO_SYMTAB           8
#define BTINFO_MEMMAP           9
#define BTINFO_BOOTWEDGE        10
#define BTINFO_MODULELIST       11
#define BTINFO_FRAMEBUFFER      12
#define BTINFO_USERCONFCOMMANDS 13
#define BTINFO_EFI              14
#define BTINFO_EFIMEMMAP        15
#define BTINFO_PREKERN          16

#define BTINFO_STR "bootpath", "rootdevice", "bootdisk", "netif", \
   "console", "biosgeom", "symtab", "memmap", "bootwedge", "modulelist", \
   "framebuffer", "userconfcommands", "efi", "efimemmap", "prekern",

#ifndef _LOCORE

struct btinfo_common {
       int len;
       int type;
};

struct btinfo_bootpath {
       struct btinfo_common common;
       char bootpath[80];
};

struct btinfo_rootdevice {
       struct btinfo_common common;
       char devname[16];
};

struct btinfo_bootdisk {
       struct btinfo_common common;
       int labelsector; /* label valid if != -1 */
       struct {
               uint16_t type, checksum;
               char packname[16];
       } label;
       int biosdev;
       int partition;
};

struct btinfo_bootwedge {
       struct btinfo_common common;
       int biosdev;
       daddr_t startblk;
       uint64_t nblks;
       daddr_t matchblk;
       uint64_t matchnblks;
       uint8_t matchhash[16];  /* MD5 hash */
} __packed;

struct btinfo_netif {
       struct btinfo_common common;
       char ifname[16];
       int bus;
#define BI_BUS_ISA 0
#define BI_BUS_PCI 1
       union {
               unsigned int iobase; /* ISA */
               unsigned int tag; /* PCI, BIOS format */
       } addr;
};

struct btinfo_console {
       struct btinfo_common common;
       char devname[16];
       int addr;
       int speed;
};

struct btinfo_symtab {
       struct btinfo_common common;
       int nsym;
       int ssym;
       int esym;
};

struct bi_memmap_entry {
       uint64_t addr;          /* beginning of block */        /* 8 */
       uint64_t size;          /* size of block */             /* 8 */
       uint32_t type;          /* type of block */             /* 4 */
} __packed;                             /*      == 20 */

#define BIM_Memory      1       /* available RAM usable by OS */
#define BIM_Reserved    2       /* in use or reserved by the system */
#define BIM_ACPI        3       /* ACPI Reclaim memory */
#define BIM_NVS         4       /* ACPI NVS memory */
#define BIM_Unusable    5       /* errors have been detected */
#define BIM_Disabled    6       /* not enabled */
#define BIM_PMEM        7       /* Persistent memory */
#define BIM_PRAM        12      /* legacy NVDIMM (OEM defined) */

struct btinfo_memmap {
       struct btinfo_common common;
       int num;
       struct bi_memmap_entry entry[1]; /* var len */
};

#if HAVE_NBTOOL_CONFIG_H
#include <nbinclude/sys/bootblock.h>
#else
#include <sys/bootblock.h>
#endif /* HAVE_NBTOOL_CONFIG_H */

/*
* Structure describing disk info as seen by the BIOS.
*/
struct bi_biosgeom_entry {
       int             sec, head, cyl;         /* geometry */
       uint64_t        totsec;                 /* LBA sectors from ext int13 */
       int             flags, dev;             /* flags, BIOS device # */
#define BI_GEOM_INVALID         0x000001
#define BI_GEOM_EXTINT13        0x000002
#ifdef BIOSDISK_EXTINFO_V3
#define BI_GEOM_BADCKSUM        0x000004        /* v3.x checksum invalid */
#define BI_GEOM_BUS_MASK        0x00ff00        /* connecting bus type */
#define BI_GEOM_BUS_ISA         0x000100
#define BI_GEOM_BUS_PCI         0x000200
#define BI_GEOM_BUS_OTHER       0x00ff00
#define BI_GEOM_IFACE_MASK      0xff0000        /* interface type */
#define BI_GEOM_IFACE_ATA       0x010000
#define BI_GEOM_IFACE_ATAPI     0x020000
#define BI_GEOM_IFACE_SCSI      0x030000
#define BI_GEOM_IFACE_USB       0x040000
#define BI_GEOM_IFACE_1394      0x050000        /* Firewire */
#define BI_GEOM_IFACE_FIBRE     0x060000        /* Fibre channel */
#define BI_GEOM_IFACE_OTHER     0xff0000
       unsigned int    cksum;                  /* MBR checksum */
       unsigned int    interface_path;         /* ISA iobase PCI bus/dev/fun */
       uint64_t        device_path;
       int             res0;                   /* future expansion; 0 now */
#else
       unsigned int    cksum;                  /* MBR checksum */
       int             res0, res1, res2, res3; /* future expansion; 0 now */
#endif
       struct mbr_partition mbrparts[MBR_PART_COUNT]; /* MBR itself */
} __packed;

struct btinfo_biosgeom {
       struct btinfo_common common;
       int num;
       struct bi_biosgeom_entry disk[1]; /* var len */
};

struct bi_modulelist_entry {
       char path[80];
       int type;
       int len;
       uint32_t base;
};
#define BI_MODULE_NONE          0x00
#define BI_MODULE_ELF           0x01
#define BI_MODULE_IMAGE         0x02
#define BI_MODULE_RND           0x03
#define BI_MODULE_FS            0x04

struct btinfo_modulelist {
       struct btinfo_common common;
       int num;
       uint32_t endpa;
       /* bi_modulelist_entry list follows */
};

struct btinfo_framebuffer {
       struct btinfo_common common;
       uint64_t physaddr;
       uint32_t flags;
       uint32_t width;
       uint32_t height;
       uint16_t stride;
       uint8_t depth;
       uint8_t rnum;
       uint8_t gnum;
       uint8_t bnum;
       uint8_t rpos;
       uint8_t gpos;
       uint8_t bpos;
       uint16_t vbemode;
       uint8_t reserved[14];
};

struct bi_userconfcommand {
       char text[80];
};

struct btinfo_userconfcommands {
       struct btinfo_common common;
       int num;
       /* bi_userconfcommand list follows */
};

/* EFI Information */
struct btinfo_efi {
       struct btinfo_common common;
       uint64_t systblpa;      /* Physical address of the EFI System Table */
       uint32_t flags;
#define BI_EFI_32BIT    __BIT(0)        /* 32bit UEFI */
       uint8_t reserved[12];
};

struct btinfo_prekern {
       struct btinfo_common common;
       uint32_t kernpa_start;
       uint32_t kernpa_end;
};

struct btinfo_efimemmap {
       struct btinfo_common common;
       uint32_t num;           /* number of memory descriptor */
       uint32_t version;       /* version of memory descriptor */
       uint32_t size;          /* size of memory descriptor */
       uint8_t memmap[1];      /* whole memory descriptors */
};

#endif /* _LOCORE */

#ifdef _KERNEL

#define BOOTINFO_MAXSIZE 16384

#ifndef _LOCORE
/*
* Structure that holds the information passed by the boot loader.
*/
struct bootinfo {
       /* Number of bootinfo_* entries in bi_data. */
       uint32_t        bi_nentries;

       /* Raw data of bootinfo entries.  The first one (if any) is
        * found at bi_data[0] and can be casted to (bootinfo_common *).
        * Once this is done, the following entry is found at 'len'
        * offset as specified by the previous entry. */
       uint8_t         bi_data[BOOTINFO_MAXSIZE - sizeof(uint32_t)];
};

extern struct bootinfo bootinfo;
#ifdef XEN
extern bool pvh_boot;
#endif

void *lookup_bootinfo(int);
void  aprint_bootinfo(void);
#endif /* _LOCORE */

#endif /* _KERNEL */

#endif  /* _X86_BOOTINFO_H_ */

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