diff options
Diffstat (limited to 'gpxe/src/arch/i386/drivers/net/undiload.c')
| -rw-r--r-- | gpxe/src/arch/i386/drivers/net/undiload.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/gpxe/src/arch/i386/drivers/net/undiload.c b/gpxe/src/arch/i386/drivers/net/undiload.c deleted file mode 100644 index 1d4e88d7..00000000 --- a/gpxe/src/arch/i386/drivers/net/undiload.c +++ /dev/null @@ -1,171 +0,0 @@ -/* - * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>. - * - * 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_LICENCE ( GPL2_OR_LATER ); - -#include <stdint.h> -#include <stdlib.h> -#include <string.h> -#include <pxe.h> -#include <realmode.h> -#include <bios.h> -#include <pnpbios.h> -#include <basemem.h> -#include <gpxe/pci.h> -#include <undi.h> -#include <undirom.h> -#include <undiload.h> - -/** @file - * - * UNDI load/unload - * - */ - -/** Parameter block for calling UNDI loader */ -static struct s_UNDI_LOADER __bss16 ( undi_loader ); -#define undi_loader __use_data16 ( undi_loader ) - -/** UNDI loader entry point */ -static SEGOFF16_t __bss16 ( undi_loader_entry ); -#define undi_loader_entry __use_data16 ( undi_loader_entry ) - -/** - * Call UNDI loader to create a pixie - * - * @v undi UNDI device - * @v undirom UNDI ROM - * @ret rc Return status code - */ -int undi_load ( struct undi_device *undi, struct undi_rom *undirom ) { - struct s_PXE ppxe; - unsigned int fbms_seg; - uint16_t exit; - int rc; - - /* Set up START_UNDI parameters */ - memset ( &undi_loader, 0, sizeof ( undi_loader ) ); - undi_loader.AX = undi->pci_busdevfn; - undi_loader.BX = undi->isapnp_csn; - undi_loader.DX = undi->isapnp_read_port; - undi_loader.ES = BIOS_SEG; - undi_loader.DI = find_pnp_bios(); - - /* Allocate base memory for PXE stack */ - undi->restore_fbms = get_fbms(); - fbms_seg = ( undi->restore_fbms << 6 ); - fbms_seg -= ( ( undirom->code_size + 0x0f ) >> 4 ); - undi_loader.UNDI_CS = fbms_seg; - fbms_seg -= ( ( undirom->data_size + 0x0f ) >> 4 ); - undi_loader.UNDI_DS = fbms_seg; - - /* Debug info */ - DBGC ( undi, "UNDI %p loading UNDI ROM %p to CS %04x DS %04x for ", - undi, undirom, undi_loader.UNDI_CS, undi_loader.UNDI_DS ); - if ( undi->pci_busdevfn != UNDI_NO_PCI_BUSDEVFN ) { - unsigned int bus = ( undi->pci_busdevfn >> 8 ); - unsigned int devfn = ( undi->pci_busdevfn & 0xff ); - DBGC ( undi, "PCI %02x:%02x.%x\n", - bus, PCI_SLOT ( devfn ), PCI_FUNC ( devfn ) ); - } - if ( undi->isapnp_csn != UNDI_NO_ISAPNP_CSN ) { - DBGC ( undi, "ISAPnP(%04x) CSN %04x\n", - undi->isapnp_read_port, undi->isapnp_csn ); - } - - /* Call loader */ - undi_loader_entry = undirom->loader_entry; - __asm__ __volatile__ ( REAL_CODE ( "pushw %%ds\n\t" - "pushw %%ax\n\t" - "lcall *undi_loader_entry\n\t" - "addw $4, %%sp\n\t" ) - : "=a" ( exit ) - : "a" ( __from_data16 ( &undi_loader ) ) - : "ebx", "ecx", "edx", "esi", "edi", "ebp" ); - - /* UNDI API calls may rudely change the status of A20 and not - * bother to restore it afterwards. Intel is known to be - * guilty of this. - * - * Note that we will return to this point even if A20 gets - * screwed up by the UNDI driver, because Etherboot always - * resides in an even megabyte of RAM. - */ - gateA20_set(); - - if ( exit != PXENV_EXIT_SUCCESS ) { - rc = -undi_loader.Status; - if ( rc == 0 ) /* Paranoia */ - rc = -EIO; - DBGC ( undi, "UNDI %p loader failed: %s\n", - undi, strerror ( rc ) ); - return rc; - } - - /* Populate PXE device structure */ - undi->pxenv = undi_loader.PXENVptr; - undi->ppxe = undi_loader.PXEptr; - copy_from_real ( &ppxe, undi->ppxe.segment, undi->ppxe.offset, - sizeof ( ppxe ) ); - undi->entry = ppxe.EntryPointSP; - DBGC ( undi, "UNDI %p loaded PXENV+ %04x:%04x !PXE %04x:%04x " - "entry %04x:%04x\n", undi, undi->pxenv.segment, - undi->pxenv.offset, undi->ppxe.segment, undi->ppxe.offset, - undi->entry.segment, undi->entry.offset ); - - /* Update free base memory counter */ - undi->fbms = ( fbms_seg >> 6 ); - set_fbms ( undi->fbms ); - DBGC ( undi, "UNDI %p using [%d,%d) kB of base memory\n", - undi, undi->fbms, undi->restore_fbms ); - - return 0; -} - -/** - * Unload a pixie - * - * @v undi UNDI device - * @ret rc Return status code - * - * Erases the PXENV+ and !PXE signatures, and frees the used base - * memory (if possible). - */ -int undi_unload ( struct undi_device *undi ) { - static uint32_t dead = 0xdeaddead; - - DBGC ( undi, "UNDI %p unloading\n", undi ); - - /* Erase signatures */ - if ( undi->pxenv.segment ) - put_real ( dead, undi->pxenv.segment, undi->pxenv.offset ); - if ( undi->ppxe.segment ) - put_real ( dead, undi->ppxe.segment, undi->ppxe.offset ); - - /* Free base memory, if possible */ - if ( undi->fbms == get_fbms() ) { - DBGC ( undi, "UNDI %p freeing [%d,%d) kB of base memory\n", - undi, undi->fbms, undi->restore_fbms ); - set_fbms ( undi->restore_fbms ); - return 0; - } else { - DBGC ( undi, "UNDI %p leaking [%d,%d) kB of base memory\n", - undi, undi->fbms, undi->restore_fbms ); - return -EBUSY; - } -} |