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/*-
* Copyright (c) 2011 Doug Rabson
* 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.
*
* $FreeBSD$
*/
/*
* USERBOOT interface versions
*/
#define USERBOOT_VERSION_1 1
/*
* Exit codes from the loader
*/
#define USERBOOT_EXIT_QUIT 1
#define USERBOOT_EXIT_REBOOT 2
struct loader_callbacks_v1 {
/*
* Console i/o
*/
/*
* Wait until a key is pressed on the console and then return it
*/
int (*getc)(void *arg);
/*
* Write the character ch to the console
*/
void (*putc)(void *arg, int ch);
/*
* Return non-zero if a key can be read from the console
*/
int (*poll)(void *arg);
/*
* Host filesystem i/o
*/
/*
* Open a file in the host filesystem
*/
int (*open)(void *arg, const char *filename, void **h_return);
/*
* Close a file
*/
int (*close)(void *arg, void *h);
/*
* Return non-zero if the file is a directory
*/
int (*isdir)(void *arg, void *h);
/*
* Read size bytes from a file. The number of bytes remaining
* in dst after reading is returned in *resid_return
*/
int (*read)(void *arg, void *h, void *dst, size_t size,
size_t *resid_return);
/*
* Read an entry from a directory. The entry's inode number is
* returned in *fileno_return, its type in *type_return and
* the name length in *namelen_return. The name itself is
* copied to the buffer name which must be at least PATH_MAX
* in size.
*/
int (*readdir)(void *arg, void *h, uint32_t *fileno_return,
uint8_t *type_return, size_t *namelen_return, char *name);
/*
* Seek to a location within an open file
*/
int (*seek)(void *arg, void *h, uint64_t offset,
int whence);
/*
* Return some stat(2) related information about the file
*/
int (*stat)(void *arg, void *h, int *mode_return,
int *uid_return, int *gid_return, uint64_t *size_return);
/*
* Disk image i/o
*/
/*
* Read from a disk image at the given offset
*/
int (*diskread)(void *arg, int unit, uint64_t offset,
void *dst, size_t size, size_t *resid_return);
/*
* Guest virtual machine i/o
*/
/*
* Copy to the guest address space
*/
int (*copyin)(void *arg, const void *from,
uint64_t to, size_t size);
/*
* Copy from the guest address space
*/
int (*copyout)(void *arg, uint64_t from,
void *to, size_t size);
/*
* Set a guest register value
*/
void (*setreg)(void *arg, int, uint64_t);
/*
* Set a guest MSR value
*/
void (*setmsr)(void *arg, int, uint64_t);
/*
* Set a guest CR value
*/
void (*setcr)(void *arg, int, uint64_t);
/*
* Set the guest GDT address
*/
void (*setgdt)(void *arg, uint64_t, size_t);
/*
* Transfer control to the guest at the given address
*/
void (*exec)(void *arg, uint64_t pc);
/*
* Misc
*/
/*
* Sleep for usec microseconds
*/
void (*delay)(void *arg, int usec);
/*
* Exit with the given exit code
*/
void (*exit)(void *arg, int v);
/*
* Return guest physical memory map details
*/
void (*getmem)(void *arg, uint64_t *lowmem,
uint64_t *highmem);
};
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