diff options
Diffstat (limited to 'gpxe/src/arch/i386/interface/pxeparent/pxeparent.c')
| -rw-r--r-- | gpxe/src/arch/i386/interface/pxeparent/pxeparent.c | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/gpxe/src/arch/i386/interface/pxeparent/pxeparent.c b/gpxe/src/arch/i386/interface/pxeparent/pxeparent.c deleted file mode 100644 index 582db5d2..00000000 --- a/gpxe/src/arch/i386/interface/pxeparent/pxeparent.c +++ /dev/null @@ -1,201 +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 <gpxe/dhcp.h> -#include <pxeparent.h> -#include <pxe_api.h> -#include <pxe_types.h> -#include <pxe.h> - -/** @file - * - * Call interface to parent PXE stack - * - */ - -/** - * Name PXE API call - * - * @v function API call number - * @ret name API call name - */ -static inline __attribute__ (( always_inline )) const char * -pxeparent_function_name ( unsigned int function ) { - switch ( function ) { - case PXENV_START_UNDI: - return "PXENV_START_UNDI"; - case PXENV_STOP_UNDI: - return "PXENV_STOP_UNDI"; - case PXENV_UNDI_STARTUP: - return "PXENV_UNDI_STARTUP"; - case PXENV_UNDI_CLEANUP: - return "PXENV_UNDI_CLEANUP"; - case PXENV_UNDI_INITIALIZE: - return "PXENV_UNDI_INITIALIZE"; - case PXENV_UNDI_RESET_ADAPTER: - return "PXENV_UNDI_RESET_ADAPTER"; - case PXENV_UNDI_SHUTDOWN: - return "PXENV_UNDI_SHUTDOWN"; - case PXENV_UNDI_OPEN: - return "PXENV_UNDI_OPEN"; - case PXENV_UNDI_CLOSE: - return "PXENV_UNDI_CLOSE"; - case PXENV_UNDI_TRANSMIT: - return "PXENV_UNDI_TRANSMIT"; - case PXENV_UNDI_SET_MCAST_ADDRESS: - return "PXENV_UNDI_SET_MCAST_ADDRESS"; - case PXENV_UNDI_SET_STATION_ADDRESS: - return "PXENV_UNDI_SET_STATION_ADDRESS"; - case PXENV_UNDI_SET_PACKET_FILTER: - return "PXENV_UNDI_SET_PACKET_FILTER"; - case PXENV_UNDI_GET_INFORMATION: - return "PXENV_UNDI_GET_INFORMATION"; - case PXENV_UNDI_GET_STATISTICS: - return "PXENV_UNDI_GET_STATISTICS"; - case PXENV_UNDI_CLEAR_STATISTICS: - return "PXENV_UNDI_CLEAR_STATISTICS"; - case PXENV_UNDI_INITIATE_DIAGS: - return "PXENV_UNDI_INITIATE_DIAGS"; - case PXENV_UNDI_FORCE_INTERRUPT: - return "PXENV_UNDI_FORCE_INTERRUPT"; - case PXENV_UNDI_GET_MCAST_ADDRESS: - return "PXENV_UNDI_GET_MCAST_ADDRESS"; - case PXENV_UNDI_GET_NIC_TYPE: - return "PXENV_UNDI_GET_NIC_TYPE"; - case PXENV_UNDI_GET_IFACE_INFO: - return "PXENV_UNDI_GET_IFACE_INFO"; - /* - * Duplicate case value; this is a bug in the PXE specification. - * - * case PXENV_UNDI_GET_STATE: - * return "PXENV_UNDI_GET_STATE"; - */ - case PXENV_UNDI_ISR: - return "PXENV_UNDI_ISR"; - case PXENV_GET_CACHED_INFO: - return "PXENV_GET_CACHED_INFO"; - default: - return "UNKNOWN API CALL"; - } -} - -/** - * PXE parent parameter block - * - * Used as the paramter block for all parent PXE API calls. Resides in base - * memory. - */ -static union u_PXENV_ANY __bss16 ( pxeparent_params ); -#define pxeparent_params __use_data16 ( pxeparent_params ) - -/** PXE parent entry point - * - * Used as the indirection vector for all parent PXE API calls. Resides in - * base memory. - */ -SEGOFF16_t __bss16 ( pxeparent_entry_point ); -#define pxeparent_entry_point __use_data16 ( pxeparent_entry_point ) - -/** - * Issue parent PXE API call - * - * @v entry Parent PXE stack entry point - * @v function API call number - * @v params PXE parameter block - * @v params_len Length of PXE parameter block - * @ret rc Return status code - */ -int pxeparent_call ( SEGOFF16_t entry, unsigned int function, - void *params, size_t params_len ) { - PXENV_EXIT_t exit; - int discard_b, discard_D; - int rc; - - /* Copy parameter block and entry point */ - assert ( params_len <= sizeof ( pxeparent_params ) ); - memcpy ( &pxeparent_params, params, params_len ); - memcpy ( &pxeparent_entry_point, &entry, sizeof ( entry ) ); - - /* Call real-mode entry point. This calling convention will - * work with both the !PXE and the PXENV+ entry points. - */ - __asm__ __volatile__ ( REAL_CODE ( "pushw %%es\n\t" - "pushw %%di\n\t" - "pushw %%bx\n\t" - "lcall *pxeparent_entry_point\n\t" - "addw $6, %%sp\n\t" ) - : "=a" ( exit ), "=b" ( discard_b ), - "=D" ( discard_D ) - : "b" ( function ), - "D" ( __from_data16 ( &pxeparent_params ) ) - : "ecx", "edx", "esi", "ebp" ); - - /* PXE 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 parent PXE stack, because Etherboot always - * resides in an even megabyte of RAM. - */ - gateA20_set(); - - /* Determine return status code based on PXENV_EXIT and - * PXENV_STATUS - */ - if ( exit == PXENV_EXIT_SUCCESS ) { - rc = 0; - } else { - rc = -pxeparent_params.Status; - /* Paranoia; don't return success for the combination - * of PXENV_EXIT_FAILURE but PXENV_STATUS_SUCCESS - */ - if ( rc == 0 ) - rc = -EIO; - } - - /* If anything goes wrong, print as much debug information as - * it's possible to give. - */ - if ( rc != 0 ) { - SEGOFF16_t rm_params = { - .segment = rm_ds, - .offset = __from_data16 ( &pxeparent_params ), - }; - - DBG ( "PXEPARENT %s failed: %s\n", - pxeparent_function_name ( function ), strerror ( rc ) ); - DBG ( "PXEPARENT parameters at %04x:%04x length " - "%#02zx, entry point at %04x:%04x\n", - rm_params.segment, rm_params.offset, params_len, - pxeparent_entry_point.segment, - pxeparent_entry_point.offset ); - DBG ( "PXEPARENT parameters provided:\n" ); - DBG_HDA ( rm_params, params, params_len ); - DBG ( "PXEPARENT parameters returned:\n" ); - DBG_HDA ( rm_params, &pxeparent_params, params_len ); - } - - /* Copy parameter block back */ - memcpy ( params, &pxeparent_params, params_len ); - - return rc; -} - |