mirror of
https://github.com/xcat2/xNBA.git
synced 2024-12-14 23:31:39 +00:00
Mostly updated. Won't work yet.
This commit is contained in:
Michael Brown
parent
644f3674e6
commit
3bdbfe1f00
@ -1,11 +1,10 @@
|
||||
#warning "This file is obsolete"
|
||||
#if 0
|
||||
|
||||
#include "memsizes.h"
|
||||
#include "realmode.h"
|
||||
#include "gateA20.h"
|
||||
#include "etherboot.h"
|
||||
#include "errno.h"
|
||||
#include <errno.h>
|
||||
#include <assert.h>
|
||||
#include <realmode.h>
|
||||
#include <gateA20.h>
|
||||
#include <gpxe/uaccess.h>
|
||||
#include <gpxe/segment.h>
|
||||
#include <gpxe/image.h>
|
||||
|
||||
/** @file
|
||||
*
|
||||
@ -22,6 +21,8 @@
|
||||
*
|
||||
*/
|
||||
|
||||
struct image_type nbi_image_type __image_type ( PROBE_NORMAL );
|
||||
|
||||
/**
|
||||
* An NBI image header
|
||||
*
|
||||
@ -82,206 +83,185 @@ struct segheader {
|
||||
#define NBI_LOADADDR_BEFORE 0x03
|
||||
#define NBI_LAST_SEGHEADER(flags) ( (flags) & ( 1 << 2 ) )
|
||||
|
||||
/* Define a type for passing info to a loaded program */
|
||||
struct ebinfo {
|
||||
uint8_t major, minor; /* Version */
|
||||
uint16_t flags; /* Bit flags */
|
||||
};
|
||||
|
||||
/** Info passed to NBI image */
|
||||
static struct ebinfo loaderinfo = {
|
||||
VERSION_MAJOR, VERSION_MINOR,
|
||||
0
|
||||
};
|
||||
|
||||
/**
|
||||
* Determine whether or not this is a valid NBI image
|
||||
*
|
||||
* @v start Address of the image
|
||||
* @v len Length of the image
|
||||
* @v context NBI image context
|
||||
* @ret True Image is a valid NBI image
|
||||
* @ret False Image is not a valid NBI image
|
||||
* @err ENOEXEC Image is not a valid NBI image
|
||||
*
|
||||
* "context" is filled in with a context pointer suitable for passing to
|
||||
* nbi_load() and nbi_boot().
|
||||
*
|
||||
*/
|
||||
static int nbi_probe ( physaddr_t start, off_t len, void **context ) {
|
||||
static struct imgheader imgheader;
|
||||
|
||||
if ( (unsigned)len < sizeof ( imgheader ) ) {
|
||||
DBG ( "NBI image too small\n" );
|
||||
errno = ENOEXEC;
|
||||
return 0;
|
||||
}
|
||||
|
||||
copy_from_phys ( &imgheader, start, sizeof ( imgheader ) );
|
||||
|
||||
if ( imgheader.magic != NBI_MAGIC ) {
|
||||
errno = ENOEXEC;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Record image context */
|
||||
DBG ( "NBI found valid image\n" );
|
||||
*context = &imgheader;
|
||||
return 1;
|
||||
}
|
||||
|
||||
/**
|
||||
* Prepare a segment for an NBI image
|
||||
*
|
||||
* @v dest Address of segment
|
||||
* @v imglen Length of initialised-data portion of the segment
|
||||
* @v memlen Total length of the segment
|
||||
* @v image NBI image
|
||||
* @v offset Offset within NBI image
|
||||
* @v filesz Length of initialised-data portion of the segment
|
||||
* @v memsz Total length of the segment
|
||||
* @v src Source for initialised data
|
||||
* @ret True Segment can be used
|
||||
* @ret False Segment cannot be used
|
||||
* @err other As returned by prep_segment()
|
||||
*
|
||||
* @ret rc Return status code
|
||||
*/
|
||||
static int nbi_prepare_segment ( physaddr_t dest, off_t imglen, off_t memlen,
|
||||
physaddr_t src __unused ) {
|
||||
DBG ( "NBI preparing segment [%x,%x) (imglen %d memlen %d)\n",
|
||||
dest, dest + memlen, imglen, memlen );
|
||||
return prep_segment ( dest, dest + imglen, dest + memlen );
|
||||
static int nbi_prepare_segment ( struct image *image, size_t offset __unused,
|
||||
userptr_t dest, size_t filesz, size_t memsz ){
|
||||
int rc;
|
||||
|
||||
if ( ( rc = prep_segment ( dest, filesz, memsz ) ) != 0 ) {
|
||||
DBGC ( image, "NBI %p could not prepare segment: %s\n",
|
||||
image, strerror ( rc ) );
|
||||
return rc;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Load a segment for an NBI image
|
||||
*
|
||||
* @v dest Address of segment
|
||||
* @v imglen Length of initialised-data portion of the segment
|
||||
* @v memlen Total length of the segment
|
||||
* @v image NBI image
|
||||
* @v offset Offset within NBI image
|
||||
* @v filesz Length of initialised-data portion of the segment
|
||||
* @v memsz Total length of the segment
|
||||
* @v src Source for initialised data
|
||||
* @ret True Always
|
||||
*
|
||||
* @ret rc Return status code
|
||||
*/
|
||||
static int nbi_load_segment ( physaddr_t dest, off_t imglen,
|
||||
off_t memlen __unused, physaddr_t src ) {
|
||||
DBG ( "NBI loading segment [%x,%x)\n", dest, dest + imglen );
|
||||
copy_phys_to_phys ( dest, src, imglen );
|
||||
return 1;
|
||||
static int nbi_load_segment ( struct image *image, size_t offset,
|
||||
userptr_t dest, size_t filesz,
|
||||
size_t memsz __unused ) {
|
||||
memcpy_user ( dest, 0, image->data, offset, filesz );
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Process segments of an NBI image
|
||||
*
|
||||
* @v start Address of the image
|
||||
* @v len Length of the image
|
||||
* @v image NBI image
|
||||
* @v imgheader Image header information
|
||||
* @v process Function to call for each segment
|
||||
* @ret True All segments were processed successfully
|
||||
* @ret False An error occurred processing a segment
|
||||
* @err ENOEXEC Image is not a valid NBI image
|
||||
* @err other As returned by the "process" function
|
||||
*
|
||||
* @ret rc Return status code
|
||||
*/
|
||||
static int nbi_process_segments ( physaddr_t start, off_t len,
|
||||
static int nbi_process_segments ( struct image *image,
|
||||
struct imgheader *imgheader,
|
||||
int ( * process ) ( physaddr_t dest,
|
||||
off_t imglen,
|
||||
off_t memlen,
|
||||
physaddr_t src ) ) {
|
||||
int ( * process ) ( struct image *image,
|
||||
size_t offset,
|
||||
userptr_t dest,
|
||||
size_t filesz,
|
||||
size_t memsz ) ) {
|
||||
struct segheader sh;
|
||||
off_t offset = 0;
|
||||
off_t sh_off;
|
||||
physaddr_t dest;
|
||||
off_t dest_imglen, dest_memlen;
|
||||
size_t offset = 0;
|
||||
size_t sh_off;
|
||||
userptr_t dest;
|
||||
size_t filesz;
|
||||
size_t memsz;
|
||||
int rc;
|
||||
|
||||
/* Copy header to target location */
|
||||
dest = ( ( imgheader->location.segment << 4 ) +
|
||||
imgheader->location.offset );
|
||||
dest_imglen = dest_memlen = NBI_HEADER_LENGTH;
|
||||
if ( ! process ( dest, dest_imglen, dest_memlen, start + offset ) )
|
||||
return 0;
|
||||
offset += dest_imglen;
|
||||
/* Copy image header to target location */
|
||||
dest = real_to_user ( imgheader->location.segment,
|
||||
imgheader->location.offset );
|
||||
filesz = memsz = NBI_HEADER_LENGTH;
|
||||
if ( ( rc = process ( image, offset, dest, filesz, memsz ) ) != 0 )
|
||||
return rc;
|
||||
offset += filesz;
|
||||
|
||||
/* Process segments in turn */
|
||||
sh_off = NBI_LENGTH ( imgheader->length );
|
||||
do {
|
||||
/* Read segment header */
|
||||
copy_from_phys ( &sh, start + sh_off, sizeof ( sh ) );
|
||||
copy_from_user ( &sh, image->data, sh_off, sizeof ( sh ) );
|
||||
if ( sh.length == 0 ) {
|
||||
/* Avoid infinite loop? */
|
||||
DBG ( "NBI invalid segheader length 0\n" );
|
||||
errno = ENOEXEC;
|
||||
return 0;
|
||||
DBGC ( image, "NBI %p invalid segheader length 0\n",
|
||||
image );
|
||||
return -ENOEXEC;
|
||||
}
|
||||
|
||||
/* Calculate segment load address */
|
||||
switch ( NBI_LOADADDR_FLAGS ( sh.flags ) ) {
|
||||
case NBI_LOADADDR_ABS:
|
||||
dest = sh.loadaddr;
|
||||
dest = phys_to_user ( sh.loadaddr );
|
||||
break;
|
||||
case NBI_LOADADDR_AFTER:
|
||||
dest = dest + dest_memlen + sh.loadaddr;
|
||||
dest = userptr_add ( dest, memsz + sh.loadaddr );
|
||||
break;
|
||||
case NBI_LOADADDR_BEFORE:
|
||||
dest = dest - sh.loadaddr;
|
||||
dest = userptr_add ( dest, -sh.loadaddr );
|
||||
break;
|
||||
case NBI_LOADADDR_END:
|
||||
/* Not correct according to the spec, but
|
||||
* maintains backwards compatibility with
|
||||
* previous versions of Etherboot.
|
||||
*/
|
||||
dest = ( meminfo.memsize * 1024 + 0x100000UL )
|
||||
- sh.loadaddr;
|
||||
dest = phys_to_user ( ( extmemsize() + 1024 ) * 1024
|
||||
- sh.loadaddr );
|
||||
break;
|
||||
default:
|
||||
/* Cannot be reached */
|
||||
DBG ( "NBI can't count up to three!\n" );
|
||||
assert ( 0 );
|
||||
}
|
||||
|
||||
/* Process this segment */
|
||||
dest_imglen = sh.imglength;
|
||||
dest_memlen = sh.memlength;
|
||||
if ( ! process ( dest, dest_imglen, dest_memlen,
|
||||
start + offset ) )
|
||||
return 0;
|
||||
offset += dest_imglen;
|
||||
filesz = sh.imglength;
|
||||
memsz = sh.memlength;
|
||||
if ( ( offset + filesz ) > image->len ) {
|
||||
DBGC ( image, "NBI %p segment outside file\n", image );
|
||||
return -ENOEXEC;
|
||||
}
|
||||
if ( ( rc = process ( image, offset, dest,
|
||||
filesz, memsz ) ) != 0 ) {
|
||||
return rc;
|
||||
}
|
||||
offset += filesz;
|
||||
|
||||
/* Next segheader */
|
||||
sh_off += NBI_LENGTH ( sh.length );
|
||||
if ( sh_off >= NBI_HEADER_LENGTH ) {
|
||||
DBG ( "NBI header overflow\n" );
|
||||
errno = ENOEXEC;
|
||||
return 0;
|
||||
DBGC ( image, "NBI %p header overflow\n", image );
|
||||
return -ENOEXEC;
|
||||
}
|
||||
|
||||
} while ( ! NBI_LAST_SEGHEADER ( sh.flags ) );
|
||||
|
||||
if ( offset != len ) {
|
||||
DBG ( "NBI length mismatch (file %d, metadata %d)\n",
|
||||
len, offset );
|
||||
errno = ENOEXEC;
|
||||
return 0;
|
||||
if ( offset != image->len ) {
|
||||
DBGC ( image, "NBI %p length wrong (file %d, metadata %d)\n",
|
||||
image, image->len, offset );
|
||||
return -ENOEXEC;
|
||||
}
|
||||
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Load an NBI image into memory
|
||||
*
|
||||
* @v start Address of image
|
||||
* @v len Length of image
|
||||
* @v context NBI context (as returned by nbi_probe())
|
||||
* @ret True Image loaded into memory
|
||||
* @ret False Image not loaded into memory
|
||||
* @err ENOEXEC Image is not a valid NBI image
|
||||
* @err other As returned by nbi_process_segments()
|
||||
* @err other As returned by nbi_prepare_segment()
|
||||
* @err other As returned by nbi_load_segment()
|
||||
*
|
||||
* @v image NBI image
|
||||
* @ret rc Return status code
|
||||
*/
|
||||
static int nbi_load ( physaddr_t start, off_t len, void *context ) {
|
||||
struct imgheader *imgheader = context;
|
||||
int nbi_load ( struct image *image ) {
|
||||
struct imgheader imgheader;
|
||||
int rc;
|
||||
|
||||
/* If we don't have enough data give up */
|
||||
if ( len < NBI_HEADER_LENGTH ) {
|
||||
errno = ENOEXEC;
|
||||
return 0;
|
||||
if ( image->len < NBI_HEADER_LENGTH ) {
|
||||
DBGC ( image, "NBI %p too short for an NBI image\n", image );
|
||||
return -ENOEXEC;
|
||||
}
|
||||
|
||||
DBG ( "NBI placing header at %hx:%hx\n",
|
||||
imgheader->location.segment, imgheader->location.offset );
|
||||
|
||||
/* Check image header */
|
||||
copy_from_user ( &imgheader, image->data, 0, sizeof ( imgheader ) );
|
||||
if ( imgheader.magic != NBI_MAGIC ) {
|
||||
DBGC ( image, "NBI %p has no NBI signature\n", image );
|
||||
return -ENOEXEC;
|
||||
}
|
||||
|
||||
/* This is an NBI image, valid or otherwise */
|
||||
if ( ! image->type )
|
||||
image->type = &nbi_image_type;
|
||||
|
||||
DBGC ( image, "NBI %p placing header at %hx:%hx\n", image,
|
||||
imgheader.location.segment, imgheader.location.offset );
|
||||
|
||||
/* NBI files can have overlaps between segments; the bss of
|
||||
* one segment may overlap the initialised data of another. I
|
||||
@ -290,14 +270,14 @@ static int nbi_load ( physaddr_t start, off_t len, void *context ) {
|
||||
* passes: first to initialise the segments, then to copy the
|
||||
* data. This avoids zeroing out already-copied data.
|
||||
*/
|
||||
if ( ! nbi_process_segments ( start, len, imgheader,
|
||||
nbi_prepare_segment ) )
|
||||
return 0;
|
||||
if ( ! nbi_process_segments ( start, len, imgheader,
|
||||
nbi_load_segment ) )
|
||||
return 0;
|
||||
if ( ( rc = nbi_process_segments ( image, &imgheader,
|
||||
nbi_prepare_segment ) ) != 0 )
|
||||
return rc;
|
||||
if ( ( rc = nbi_process_segments ( image, &imgheader,
|
||||
nbi_load_segment ) ) != 0 )
|
||||
return rc;
|
||||
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -309,40 +289,34 @@ static int nbi_load ( physaddr_t start, off_t len, void *context ) {
|
||||
* @err ECANCELED NBI program returned
|
||||
*
|
||||
*/
|
||||
static int nbi_boot16 ( struct imgheader *imgheader ) {
|
||||
uint16_t basemem_bootp;
|
||||
static int nbi_boot16 ( struct image *image, struct imgheader *imgheader ) {
|
||||
int discard_D, discard_S, discard_b;
|
||||
|
||||
DBG ( "NBI executing 16-bit image at %hx:%hx\n",
|
||||
imgheader->execaddr.segoff.segment,
|
||||
imgheader->execaddr.segoff.offset );
|
||||
DBGC ( image, "NBI %p executing 16-bit image at %04x:%04x\n", image,
|
||||
imgheader->execaddr.segoff.segment,
|
||||
imgheader->execaddr.segoff.offset );
|
||||
|
||||
gateA20_unset();
|
||||
|
||||
basemem_bootp = BASEMEM_PARAMETER_INIT ( bootp_data );
|
||||
REAL_EXEC ( rm_xstart16,
|
||||
"pushw %%ds\n\t" /* far pointer to bootp data copy */
|
||||
"pushw %%bx\n\t"
|
||||
"pushl %%esi\n\t" /* location */
|
||||
"pushw %%cs\n\t" /* lcall execaddr */
|
||||
"call 1f\n\t"
|
||||
"jmp 2f\n\t"
|
||||
"\n1:\n\t"
|
||||
"pushl %%edi\n\t"
|
||||
"lret\n\t"
|
||||
"\n2:\n\t"
|
||||
"addw $8,%%sp\n\t", /* pop location and bootp ptr */
|
||||
3,
|
||||
OUT_CONSTRAINTS ( "=D" ( discard_D ), "=S" ( discard_S ),
|
||||
"=b" ( discard_b ) ),
|
||||
IN_CONSTRAINTS ( "D" ( imgheader->execaddr.segoff ),
|
||||
"S" ( imgheader->location ),
|
||||
"b" ( basemem_bootp ) ),
|
||||
CLOBBER ( "eax", "ecx", "edx", "ebp" ) );
|
||||
BASEMEM_PARAMETER_DONE ( bootp_data );
|
||||
#warning "Should be providing bootp data"
|
||||
__asm__ __volatile__ (
|
||||
REAL_CODE ( "pushw %%ds\n\t" /* far pointer to bootp data */
|
||||
"pushw %%bx\n\t"
|
||||
"pushl %%esi\n\t" /* location */
|
||||
"pushw %%cs\n\t" /* lcall execaddr */
|
||||
"call 1f\n\t"
|
||||
"jmp 2f\n\t"
|
||||
"\n1:\n\t"
|
||||
"pushl %%edi\n\t"
|
||||
"lret\n\t"
|
||||
"\n2:\n\t"
|
||||
"addw $8,%%sp\n\t" /* clean up stack */ )
|
||||
: "=D" ( discard_D ), "=S" ( discard_S ), "=b" ( discard_b )
|
||||
: "D" ( imgheader->execaddr.segoff ),
|
||||
"S" ( imgheader->location ), "b" ( 0 /* bootp data */ )
|
||||
: "eax", "ecx", "edx", "ebp" );
|
||||
|
||||
errno = ECANCELED;
|
||||
return 0;
|
||||
return -ECANCELED;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -359,57 +333,56 @@ static int nbi_boot16 ( struct imgheader *imgheader ) {
|
||||
* have returned.
|
||||
*
|
||||
*/
|
||||
static int nbi_boot32 ( struct imgheader *imgheader ) {
|
||||
int rc = 0;
|
||||
static int nbi_boot32 ( struct image *image, struct imgheader *imgheader ) {
|
||||
int rc;
|
||||
|
||||
DBG ( "NBI executing 32-bit image at %x\n",
|
||||
imgheader->execaddr.linear );
|
||||
DBGC ( image, "NBI %p executing 32-bit image at %lx\n",
|
||||
image, imgheader->execaddr.linear );
|
||||
|
||||
/* no gateA20_unset for PM call */
|
||||
errno = ENOERR;
|
||||
|
||||
#warning "Should be providing bootp data"
|
||||
#warning "xstart32 no longer exists"
|
||||
#if 0
|
||||
rc = xstart32 ( imgheader->execaddr.linear,
|
||||
virt_to_phys ( &loaderinfo ),
|
||||
( ( imgheader->location.segment << 4 ) +
|
||||
imgheader->location.offset ),
|
||||
virt_to_phys ( &bootp_data ) );
|
||||
printf ( "Secondary program returned %d\n", rc );
|
||||
0 /* bootp data */ );
|
||||
#endif
|
||||
|
||||
DBGC ( image, "NBI %p returned %d\n", image, rc );
|
||||
|
||||
if ( ! NBI_PROGRAM_RETURNS ( imgheader->flags ) ) {
|
||||
/* We shouldn't have returned */
|
||||
errno = ECANCELED;
|
||||
rc = 0;
|
||||
rc = -ECANCELED;
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* Boot a loaded NBI image
|
||||
*
|
||||
* @v context NBI context (as returned by nbi_probe())
|
||||
* @ret Never NBI program booted successfully
|
||||
* @ret False NBI program should not have returned
|
||||
* @ret other As returned by NBI program
|
||||
* @err ECANCELED NBI program should not have returned
|
||||
*
|
||||
* See also nbi_boot16() and nbi_boot32().
|
||||
* Execute a loaded NBI image
|
||||
*
|
||||
* @v image NBI image
|
||||
* @ret rc Return status code
|
||||
*/
|
||||
static int nbi_boot ( void *context ) {
|
||||
struct imgheader *imgheader = context;
|
||||
static int nbi_exec ( struct image *image ) {
|
||||
struct imgheader imgheader;
|
||||
|
||||
if ( NBI_LINEAR_EXEC_ADDR ( imgheader->flags ) ) {
|
||||
return nbi_boot32 ( imgheader );
|
||||
copy_from_user ( &imgheader, phys_to_user ( image->entry ), 0,
|
||||
sizeof ( imgheader ) );
|
||||
|
||||
if ( NBI_LINEAR_EXEC_ADDR ( imgheader.flags ) ) {
|
||||
return nbi_boot32 ( image, &imgheader );
|
||||
} else {
|
||||
return nbi_boot16 ( imgheader );
|
||||
return nbi_boot16 ( image, &imgheader );
|
||||
}
|
||||
}
|
||||
|
||||
/** Declaration of the NBI image format */
|
||||
struct image nbi_image __image = {
|
||||
.name = "NBI",
|
||||
.probe = nbi_probe,
|
||||
.load = nbi_load,
|
||||
.boot = nbi_boot,
|
||||
/** NBI image type */
|
||||
struct image_type nbi_image_type __image_type ( PROBE_NORMAL ) = {
|
||||
.name = "NBI",
|
||||
.load = nbi_load,
|
||||
.exec = nbi_exec,
|
||||
};
|
||||
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user