gpxe: delete long since obsolete snapshot of gPXE

gPXE has been deprecated in favor of iPXE for many, many years now.
It is much better than users get it directly from the iPXE project,
since we should no longer need any special modifications for Syslinux
use.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 0 insertions, 285 deletions

diff --git a/gpxe/src/arch/i386/image/com32.c b/gpxe/src/arch/i386/image/com32.c
deleted file mode 100644
index 6ab347c1..00000000
--- a/gpxe/src/arch/i386/image/com32.c
+++ /dev/null
@@ -1,285 +0,0 @@
-/*
- * Copyright (C) 2008 Daniel Verkamp <daniel@drv.nu>.
- *
- * 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; either version 2 of the
- * License, or any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-/**
- * @file
- *
- * SYSLINUX COM32 image format
- *
- */
-
-FILE_LICENCE ( GPL2_OR_LATER );
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <strings.h>
-#include <errno.h>
-#include <assert.h>
-#include <realmode.h>
-#include <basemem.h>
-#include <comboot.h>
-#include <gpxe/uaccess.h>
-#include <gpxe/image.h>
-#include <gpxe/segment.h>
-#include <gpxe/init.h>
-#include <gpxe/memmap.h>
-
-struct image_type com32_image_type __image_type ( PROBE_NORMAL );
-
-/**
- * Execute COMBOOT image
- *
- * @v image		COM32 image
- * @ret rc		Return status code
- */
-static int com32_exec ( struct image *image ) {
-	struct memory_map memmap;
-	unsigned int i;
-	int state;
-	uint32_t avail_mem_top;
-
-	state = rmsetjmp ( comboot_return );
-
-	switch ( state ) {
-	case 0: /* First time through; invoke COM32 program */
-
-		/* Get memory map */
-		get_memmap ( &memmap );
-
-		/* Find end of block covering COM32 image loading area */
-		for ( i = 0, avail_mem_top = 0 ; i < memmap.count ; i++ ) {
-			if ( (memmap.regions[i].start <= COM32_START_PHYS) &&
-			     (memmap.regions[i].end > COM32_START_PHYS + image->len) ) {
-				avail_mem_top = memmap.regions[i].end;
-				break;
-			}
-		}
-
-		DBGC ( image, "COM32 %p: available memory top = 0x%x\n",
-		       image, avail_mem_top );
-
-		assert ( avail_mem_top != 0 );
-
-		com32_external_esp = phys_to_virt ( avail_mem_top );
-
-		/* Hook COMBOOT API interrupts */
-		hook_comboot_interrupts();
-
-		/* Unregister image, so that a "boot" command doesn't
-		 * throw us into an execution loop.  We never
-		 * reregister ourselves; COMBOOT images expect to be
-		 * removed on exit.
-		 */
-		unregister_image ( image );
-
-		__asm__ __volatile__ (
-			"movl %%esp, (com32_internal_esp)\n\t" /* Save internal virtual address space ESP */
-			"movl (com32_external_esp), %%esp\n\t" /* Switch to COM32 ESP (top of available memory) */
-			"call _virt_to_phys\n\t"               /* Switch to flat physical address space */
-			"pushl %0\n\t"                         /* Pointer to CDECL helper function */
-			"pushl %1\n\t"                         /* Pointer to FAR call helper function */
-			"pushl %2\n\t"                         /* Size of low memory bounce buffer */
-			"pushl %3\n\t"                         /* Pointer to low memory bounce buffer */
-			"pushl %4\n\t"                         /* Pointer to INT call helper function */
-			"pushl %5\n\t"                         /* Pointer to the command line arguments */
-			"pushl $6\n\t"                         /* Number of additional arguments */
-			"call *%6\n\t"                         /* Execute image */
-			"call _phys_to_virt\n\t"               /* Switch back to internal virtual address space */
-			"movl (com32_internal_esp), %%esp\n\t" /* Switch back to internal stack */
-		:
-		:
-			/* %0 */ "r" ( virt_to_phys ( com32_cfarcall_wrapper ) ),
-			/* %1 */ "r" ( virt_to_phys ( com32_farcall_wrapper ) ),
-			/* %2 */ "r" ( get_fbms() * 1024 - (COM32_BOUNCE_SEG << 4) ),
-			/* %3 */ "i" ( COM32_BOUNCE_SEG << 4 ),
-			/* %4 */ "r" ( virt_to_phys ( com32_intcall_wrapper ) ),
-			/* %5 */ "r" ( virt_to_phys ( image->cmdline ) ),
-			/* %6 */ "r" ( COM32_START_PHYS )
-		:
-			"memory" );
-		DBGC ( image, "COM32 %p: returned\n", image );
-		break;
-
-	case COMBOOT_EXIT:
-		DBGC ( image, "COM32 %p: exited\n", image );
-		break;
-
-	case COMBOOT_EXIT_RUN_KERNEL:
-		DBGC ( image, "COM32 %p: exited to run kernel %p\n",
-		       image, comboot_replacement_image );
-		image->replacement = comboot_replacement_image;
-		comboot_replacement_image = NULL;
-		image_autoload ( image->replacement );
-		break;
-
-	case COMBOOT_EXIT_COMMAND:
-		DBGC ( image, "COM32 %p: exited after executing command\n",
-		       image );
-		break;
-
-	default:
-		assert ( 0 );
-		break;
-	}
-
-	unhook_comboot_interrupts();
-	comboot_force_text_mode();
-
-	return 0;
-}
-
-/**
- * Check image name extension
- * 
- * @v image		COM32 image
- * @ret rc		Return status code
- */
-static int com32_identify ( struct image *image ) {
-	const char *ext;
-	static const uint8_t magic[] = { 0xB8, 0xFF, 0x4C, 0xCD, 0x21 };
-	uint8_t buf[5];
-	
-	if ( image->len >= 5 ) {
-		/* Check for magic number
-		 * mov eax,21cd4cffh
-		 * B8 FF 4C CD 21
-		 */
-		copy_from_user ( buf, image->data, 0, sizeof(buf) );
-		if ( ! memcmp ( buf, magic, sizeof(buf) ) ) {
-			DBGC ( image, "COM32 %p: found magic number\n",
-			       image );
-			return 0;
-		}
-	}
-
-	/* Magic number not found; check filename extension */
-
-	ext = strrchr( image->name, '.' );
-
-	if ( ! ext ) {
-		DBGC ( image, "COM32 %p: no extension\n",
-		       image );
-		return -ENOEXEC;
-	}
-
-	++ext;
-
-	if ( strcasecmp( ext, "c32" ) ) {
-		DBGC ( image, "COM32 %p: unrecognized extension %s\n",
-		       image, ext );
-		return -ENOEXEC;
-	}
-
-	return 0;
-}
-
-
-/**
- * Load COM32 image into memory
- * @v image		COM32 image
- * @ret rc		Return status code
- */
-static int comboot_load_image ( struct image *image ) {
-	size_t filesz, memsz;
-	userptr_t buffer;
-	int rc;
-
-	filesz = image->len;
-	memsz = filesz;
-	buffer = phys_to_user ( COM32_START_PHYS );
-	if ( ( rc = prep_segment ( buffer, filesz, memsz ) ) != 0 ) {
-		DBGC ( image, "COM32 %p: could not prepare segment: %s\n",
-		       image, strerror ( rc ) );
-		return rc;
-	}
-
-	/* Copy image to segment */
-	memcpy_user ( buffer, 0, image->data, 0, filesz );
-
-	return 0;
-}
-
-/**
- * Prepare COM32 low memory bounce buffer
- * @v image		COM32 image
- * @ret rc		Return status code
- */
-static int comboot_prepare_bounce_buffer ( struct image * image ) {
-	unsigned int seg;
-	userptr_t seg_userptr;
-	size_t filesz, memsz;
-	int rc;
-
-	seg = COM32_BOUNCE_SEG;
-	seg_userptr = real_to_user ( seg, 0 );
-
-	/* Ensure the entire 64k segment is free */
-	memsz = 0xFFFF;
-	filesz = 0;
-
-	/* Prepare, verify, and load the real-mode segment */
-	if ( ( rc = prep_segment ( seg_userptr, filesz, memsz ) ) != 0 ) {
-		DBGC ( image, "COM32 %p: could not prepare bounce buffer segment: %s\n",
-		       image, strerror ( rc ) );
-		return rc;
-	}
-
-	return 0;
-}
-
-/**
- * Load COM32 image into memory
- *
- * @v image		COM32 image
- * @ret rc		Return status code
- */
-static int com32_load ( struct image *image ) {
-	int rc;
-
-	DBGC ( image, "COM32 %p: name '%s', cmdline '%s'\n",
-	       image, image->name, image->cmdline );
-
-	/* Check if this is a COMBOOT image */
-	if ( ( rc = com32_identify ( image ) ) != 0 ) {
-		return rc;
-	}
-
-	/* This is a COM32 image, valid or otherwise */
-	if ( ! image->type )
-		image->type = &com32_image_type;
-
-	/* Load image */
-	if ( ( rc = comboot_load_image ( image ) ) != 0 ) {
-		return rc;
-	}
-
-	/* Prepare bounce buffer segment */
-	if ( ( rc = comboot_prepare_bounce_buffer ( image ) ) != 0 ) {
-		return rc;
-	}
-
-	return 0;
-}
-
-/** SYSLINUX COM32 image type */
-struct image_type com32_image_type __image_type ( PROBE_NORMAL ) = {
-	.name = "COM32",
-	.load = com32_load,
-	.exec = com32_exec,
-};