Add iBFT code derived from IBM document.
No Microsoft intellectual property was harmed in the production of this code.
This commit is contained in:
Michael Brown
parent
cfcc41d407
commit
54bf2621ed
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@ -0,0 +1,325 @@
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/*
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* Copyright Fen Systems Ltd. 2007. Portions of this code are derived
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* from IBM Corporation Sample Programs. Copyright IBM Corporation
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* 2004, 2007. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <byteswap.h>
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#include <realmode.h>
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#include <gpxe/pci.h>
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#include <gpxe/acpi.h>
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#include <gpxe/in.h>
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#include <gpxe/netdevice.h>
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#include <gpxe/dhcp.h>
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#include <gpxe/iscsi.h>
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#include <gpxe/ibft.h>
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/** @file
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*
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* iSCSI boot firmware table
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*
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* The information in this file is derived from the document "iSCSI
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* Boot Firmware Table (iBFT)" as published by IBM at
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*
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* ftp://ftp.software.ibm.com/systems/support/system_x_pdf/ibm_iscsi_boot_firmware_table_v1.02.pdf
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*
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*/
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#define ibftab __use_data16 ( ibftab )
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/** The iBFT used by gPXE */
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struct gpxe_ibft __data16 ( ibftab ) = {
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/* Table header */
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.table = {
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/* ACPI header */
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.acpi = {
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.signature = IBFT_SIG,
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.length = sizeof ( ibftab ),
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.revision = 1,
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.oem_id = "FENSYS",
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.oem_table_id = "gPXE",
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},
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/* Control block */
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.control = {
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.header = {
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.structure_id = IBFT_STRUCTURE_ID_CONTROL,
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.version = 1,
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.length = sizeof ( ibftab.table.control ),
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.flags = 0,
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},
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.initiator = offsetof ( typeof ( ibftab ), initiator ),
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.nic_0 = offsetof ( typeof ( ibftab ), nic ),
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.target_0 = offsetof ( typeof ( ibftab ), target ),
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},
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},
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/* iSCSI initiator information */
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.initiator = {
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.header = {
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.structure_id = IBFT_STRUCTURE_ID_INITIATOR,
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.version = 1,
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.length = sizeof ( ibftab.initiator ),
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.flags = ( IBFT_FL_INITIATOR_BLOCK_VALID |
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IBFT_FL_INITIATOR_FIRMWARE_BOOT_SELECTED ),
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},
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},
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/* NIC information */
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.nic = {
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.header = {
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.structure_id = IBFT_STRUCTURE_ID_NIC,
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.version = 1,
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.length = sizeof ( ibftab.nic ),
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.flags = ( IBFT_FL_NIC_BLOCK_VALID |
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IBFT_FL_NIC_FIRMWARE_BOOT_SELECTED ),
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},
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},
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/* iSCSI target information */
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.target = {
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.header = {
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.structure_id = IBFT_STRUCTURE_ID_TARGET,
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.version = 1,
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.length = sizeof ( ibftab.target ),
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.flags = ( IBFT_FL_TARGET_BLOCK_VALID |
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IBFT_FL_TARGET_FIRMWARE_BOOT_SELECTED ),
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},
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},
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};
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/**
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* Fill in an IP address field within iBFT
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*
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* @v ipaddr IP address field
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* @v in IPv4 address
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*/
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static void ibft_set_ipaddr ( struct ibft_ipaddr *ipaddr, struct in_addr in ) {
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memset ( ipaddr, 0, sizeof ( ipaddr ) );
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if ( in.s_addr ) {
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ipaddr->in = in;
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ipaddr->ones = 0xffff;
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}
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}
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/**
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* Fill in an IP address within iBFT from DHCP option
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*
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* @v ipaddr IP address field
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* @v tag DHCP option tag
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*/
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static void ibft_set_ipaddr_option ( struct ibft_ipaddr *ipaddr,
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unsigned int tag ) {
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struct in_addr in;
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find_global_dhcp_ipv4_option ( tag, &in );
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ibft_set_ipaddr ( ipaddr, in );
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}
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/**
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* Fill in a string field within iBFT
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*
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* @v strings iBFT string block descriptor
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* @v string String field
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* @v data String to fill in
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* @v len Length of string to fill in
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* @ret rc Return status code
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*/
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static int ibft_set_string ( struct ibft_string_block *strings,
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struct ibft_string *string,
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const void *data, size_t len ) {
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char *dest;
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char *end;
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unsigned int remaining;
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dest = ( ( ( char * ) strings->table ) + strings->offset );
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end = ( ( ( char * ) strings->table ) + strings->table->acpi.length );
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remaining = ( end - dest );
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if ( len >= remaining )
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return -ENOMEM;
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memcpy ( dest, data, len );
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dest[len] = '\0';
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string->offset = strings->offset;
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string->length = len;
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strings->offset += ( len + 1 );
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return 0;
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}
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/**
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* Fill in a string field within iBFT from DHCP option
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*
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* @v strings iBFT string block descriptor
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* @v string String field
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* @v tag DHCP option tag
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* @ret rc Return status code
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*/
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static int ibft_set_string_option ( struct ibft_string_block *strings,
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struct ibft_string *string,
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unsigned int tag ) {
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struct dhcp_option *option;
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option = find_global_dhcp_option ( tag );
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if ( ! option ) {
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string->offset = 0;
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string->length = 0;
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return 0;
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}
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return ibft_set_string ( strings, string, option->data.string,
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option->len );
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}
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/**
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* Fill in NIC portion of iBFT
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*
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* @v nic NIC portion of iBFT
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* @v strings iBFT string block descriptor
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* @v netdev Network device
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* @ret rc Return status code
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*/
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static int ibft_fill_nic ( struct ibft_nic *nic,
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struct ibft_string_block *strings,
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struct net_device *netdev ) {
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struct in_addr netmask_addr;
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unsigned int netmask_count = 0;
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int rc;
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/* Extract values from DHCP configuration */
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ibft_set_ipaddr_option ( &nic->ip_address, DHCP_EB_YIADDR );
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ibft_set_ipaddr_option ( &nic->gateway, DHCP_ROUTERS );
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ibft_set_ipaddr_option ( &nic->dns[0], DHCP_DNS_SERVERS );
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if ( ( rc = ibft_set_string_option ( strings, &nic->hostname,
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DHCP_HOST_NAME ) ) != 0 )
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return rc;
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/* Derive subnet mask prefix from subnet mask */
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find_global_dhcp_ipv4_option ( DHCP_SUBNET_MASK, &netmask_addr );
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while ( netmask_addr.s_addr ) {
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if ( netmask_addr.s_addr & 0x1 )
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netmask_count++;
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netmask_addr.s_addr >>= 1;
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}
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nic->subnet_mask_prefix = netmask_count;
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/* Extract values from net-device configuration */
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memcpy ( nic->mac_address, netdev->ll_addr,
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sizeof ( nic->mac_address ) );
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nic->pci_bus_dev_func = netdev->dev->desc.location;
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return 0;
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}
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/**
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* Fill in Initiator portion of iBFT
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*
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* @v initiator Initiator portion of iBFT
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* @v strings iBFT string block descriptor
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* @ret rc Return status code
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*/
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static int ibft_fill_initiator ( struct ibft_initiator *initiator,
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struct ibft_string_block *strings ) {
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const char *initiator_iqn = iscsi_initiator_iqn();
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int rc;
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if ( ( rc = ibft_set_string ( strings, &initiator->initiator_name,
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initiator_iqn,
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strlen ( initiator_iqn ) ) ) != 0)
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return rc;
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return 0;
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}
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/**
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* Fill in Target portion of iBFT
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*
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* @v target Target portion of iBFT
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* @v strings iBFT string block descriptor
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* @v iscsi iSCSI session
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* @ret rc Return status code
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*/
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static int ibft_fill_target ( struct ibft_target *target,
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struct ibft_string_block *strings,
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struct iscsi_session *iscsi ) {
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struct sockaddr_in *sin_target =
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( struct sockaddr_in * ) &iscsi->target_sockaddr;
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int rc;
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/* Fill in Target values */
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ibft_set_ipaddr ( &target->ip_address, sin_target->sin_addr );
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target->socket = ntohs ( sin_target->sin_port );
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if ( ( rc = ibft_set_string ( strings, &target->target_name,
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iscsi->target_iqn,
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strlen ( iscsi->target_iqn ) ) ) != 0 )
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return rc;
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if ( iscsi->username ) {
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if ( ( rc = ibft_set_string ( strings, &target->chap_name,
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iscsi->username,
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strlen ( iscsi->username ) ))!=0)
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return rc;
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}
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if ( iscsi->password ) {
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if ( ( rc = ibft_set_string ( strings, &target->chap_secret,
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iscsi->password,
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strlen ( iscsi->password ) ))!=0)
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return rc;
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target->chap_type = IBFT_CHAP_ONE_WAY;
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}
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return 0;
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}
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/**
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* Fill in all variable portions of iBFT
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*
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* @v netdev Network device
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* @v initiator_iqn Initiator IQN
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* @v st_target Target socket address
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* @v target_iqn Target IQN
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* @ret rc Return status code
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*
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*/
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int ibft_fill_data ( struct net_device *netdev,
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struct iscsi_session *iscsi ) {
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struct ibft_string_block strings = {
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.table = &ibftab.table,
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.offset = offsetof ( typeof ( ibftab ), strings ),
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};
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int rc;
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/* Fill in NIC, Initiator and Target portions */
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if ( ( rc = ibft_fill_nic ( &ibftab.nic, &strings, netdev ) ) != 0 )
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return rc;
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if ( ( rc = ibft_fill_initiator ( &ibftab.initiator,
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&strings ) ) != 0 )
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return rc;
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if ( ( rc = ibft_fill_target ( &ibftab.target, &strings,
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iscsi ) ) != 0 )
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return rc;
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/* Update checksum */
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acpi_fix_checksum ( &ibftab.table.acpi );
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return 0;
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}
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@ -1,11 +1,300 @@
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#ifndef _GPXE_IBFT_H
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#define _GPXE_IBFT_H
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/* Placeholder file */
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/*
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* Copyright Fen Systems Ltd. 2007. Portions of this code are derived
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* from IBM Corporation Sample Programs. Copyright IBM Corporation
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* 2004, 2007. All rights reserved.
|
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*
|
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* Permission is hereby granted, free of charge, to any person
|
||||
* obtaining a copy of this software and associated documentation
|
||||
* files (the "Software"), to deal in the Software without
|
||||
* restriction, including without limitation the rights to use, copy,
|
||||
* modify, merge, publish, distribute, sublicense, and/or sell copies
|
||||
* of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be
|
||||
* included in all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
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* SOFTWARE.
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*
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*/
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/** @file
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*
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* iSCSI boot firmware table
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*
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* The information in this file is derived from the document "iSCSI
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* Boot Firmware Table (iBFT)" as published by IBM at
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*
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* ftp://ftp.software.ibm.com/systems/support/system_x_pdf/ibm_iscsi_boot_firmware_table_v1.02.pdf
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*
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*/
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#include <stdint.h>
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#include <gpxe/acpi.h>
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#include <gpxe/in.h>
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/** iSCSI Boot Firmware Table signature */
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#define IBFT_SIG "iBFT"
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/** An offset from the start of the iBFT */
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typedef uint16_t ibft_off_t;
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/** Length of a string within the iBFT (excluding terminating NUL) */
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typedef uint16_t ibft_size_t;
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/** A string within the iBFT */
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struct ibft_string {
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/** Length of string */
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ibft_size_t length;
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/** Offset to string */
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ibft_off_t offset;
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} __attribute__ (( packed ));
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/** An IP address within the iBFT */
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struct ibft_ipaddr {
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/** Reserved; must be zero */
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uint16_t zeroes[5];
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/** Must be 0xffff if IPv4 address is present, otherwise zero */
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uint16_t ones;
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/** The IPv4 address, or zero if not present */
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struct in_addr in;
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} __attribute__ (( packed ));
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/**
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* iBFT structure header
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*
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* This structure is common to several sections within the iBFT.
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*/
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struct ibft_header {
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/** Structure ID
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*
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* This is an IBFT_STRUCTURE_ID_XXX constant
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*/
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uint8_t structure_id;
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/** Version (always 1) */
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uint8_t version;
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/** Length, including this header */
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uint16_t length;
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/** Index
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*
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* This is the number of the NIC or Target, when applicable.
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*/
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uint8_t index;
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/** Flags */
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uint8_t flags;
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} __attribute__ (( packed ));
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/**
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* iBFT Control structure
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*
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*/
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struct ibft_control {
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/** Common header */
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struct ibft_header header;
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/** Extensions */
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uint16_t extensions;
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/** Offset to Initiator structure */
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ibft_off_t initiator;
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/** Offset to NIC structure for NIC 0 */
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ibft_off_t nic_0;
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/** Offset to Target structure for target 0 */
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ibft_off_t target_0;
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/** Offset to NIC structure for NIC 1 */
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ibft_off_t nic_1;
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/** Offset to Target structure for target 1 */
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ibft_off_t target_1;
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} __attribute__ (( packed ));
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/** Structure ID for Control section */
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#define IBFT_STRUCTURE_ID_CONTROL 0x01
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/** Attempt login only to specified target
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*
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* If this flag is not set, all targets will be logged in to.
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*/
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#define IBFT_FL_CONTROL_SINGLE_LOGIN_ONLY 0x01
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/**
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* iBFT Initiator structure
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*
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*/
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struct ibft_initiator {
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/** Common header */
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struct ibft_header header;
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/** iSNS server */
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struct ibft_ipaddr isns_server;
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/** SLP server */
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struct ibft_ipaddr slp_server;
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/** Primary and secondary Radius servers */
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struct ibft_ipaddr radius[2];
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/** Initiator name */
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struct ibft_string initiator_name;
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} __attribute__ (( packed ));
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/** Structure ID for Initiator section */
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#define IBFT_STRUCTURE_ID_INITIATOR 0x02
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/** Initiator block valid */
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#define IBFT_FL_INITIATOR_BLOCK_VALID 0x01
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/** Initiator firmware boot selected */
|
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#define IBFT_FL_INITIATOR_FIRMWARE_BOOT_SELECTED 0x02
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|
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/**
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* iBFT NIC structure
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*
|
||||
*/
|
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struct ibft_nic {
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/** Common header */
|
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struct ibft_header header;
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/** IP address */
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struct ibft_ipaddr ip_address;
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/** Subnet mask
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||||
*
|
||||
* This is the length of the subnet mask in bits (e.g. /24).
|
||||
*/
|
||||
uint8_t subnet_mask_prefix;
|
||||
/** Origin */
|
||||
uint8_t origin;
|
||||
/** Default gateway */
|
||||
struct ibft_ipaddr gateway;
|
||||
/** Primary and secondary DNS servers */
|
||||
struct ibft_ipaddr dns[2];
|
||||
/** DHCP server */
|
||||
struct ibft_ipaddr dhcp;
|
||||
/** VLAN tag */
|
||||
uint16_t vlan;
|
||||
/** MAC address */
|
||||
uint8_t mac_address[6];
|
||||
/** PCI bus:dev:fn */
|
||||
uint16_t pci_bus_dev_func;
|
||||
/** Hostname */
|
||||
struct ibft_string hostname;
|
||||
} __attribute__ (( packed ));
|
||||
|
||||
/** Structure ID for NIC section */
|
||||
#define IBFT_STRUCTURE_ID_NIC 0x03
|
||||
|
||||
/** NIC block valid */
|
||||
#define IBFT_FL_NIC_BLOCK_VALID 0x01
|
||||
|
||||
/** NIC firmware boot selected */
|
||||
#define IBFT_FL_NIC_FIRMWARE_BOOT_SELECTED 0x02
|
||||
|
||||
/** NIC global / link local */
|
||||
#define IBFT_FL_NIC_GLOBAL 0x04
|
||||
|
||||
/**
|
||||
* iBFT Target structure
|
||||
*
|
||||
*/
|
||||
struct ibft_target {
|
||||
/** Common header */
|
||||
struct ibft_header header;
|
||||
/** IP address */
|
||||
struct ibft_ipaddr ip_address;
|
||||
/** TCP port */
|
||||
uint16_t socket;
|
||||
/** Boot LUN */
|
||||
uint64_t boot_lun;
|
||||
/** CHAP type
|
||||
*
|
||||
* This is an IBFT_CHAP_XXX constant.
|
||||
*/
|
||||
uint8_t chap_type;
|
||||
/** NIC association */
|
||||
uint8_t nic_association;
|
||||
/** Target name */
|
||||
struct ibft_string target_name;
|
||||
/** CHAP name */
|
||||
struct ibft_string chap_name;
|
||||
/** CHAP secret */
|
||||
struct ibft_string chap_secret;
|
||||
/** Reverse CHAP name */
|
||||
struct ibft_string reverse_chap_name;
|
||||
/** Reverse CHAP secret */
|
||||
struct ibft_string reverse_chap_secret;
|
||||
} __attribute__ (( packed ));
|
||||
|
||||
/** Structure ID for Target section */
|
||||
#define IBFT_STRUCTURE_ID_TARGET 0x04
|
||||
|
||||
/** Target block valid */
|
||||
#define IBFT_FL_TARGET_BLOCK_VALID 0x01
|
||||
|
||||
/** Target firmware boot selected */
|
||||
#define IBFT_FL_TARGET_FIRMWARE_BOOT_SELECTED 0x02
|
||||
|
||||
/** Target use Radius CHAP */
|
||||
#define IBFT_FL_TARGET_USE_CHAP 0x04
|
||||
|
||||
/** Target use Radius rCHAP */
|
||||
#define IBFT_FL_TARGET_USE_RCHAP 0x08
|
||||
|
||||
/* Values for chap_type */
|
||||
#define IBFT_CHAP_NONE 0 /**< No CHAP authentication */
|
||||
#define IBFT_CHAP_ONE_WAY 1 /**< One-way CHAP */
|
||||
#define IBFT_CHAP_MUTUAL 2 /**< Mutual CHAP */
|
||||
|
||||
/**
|
||||
* iSCSI Boot Firmware Table (iBFT)
|
||||
*/
|
||||
struct ibft_table {
|
||||
/** ACPI header */
|
||||
struct acpi_description_header acpi;
|
||||
/** Reserved */
|
||||
uint8_t reserved[12];
|
||||
/** Control structure */
|
||||
struct ibft_control control;
|
||||
} __attribute__ (( packed ));
|
||||
|
||||
/**
|
||||
* iSCSI string block descriptor
|
||||
*
|
||||
* This is an internal structure that we use to keep track of the
|
||||
* allocation of string data.
|
||||
*/
|
||||
struct ibft_string_block {
|
||||
/** The iBFT containing these strings */
|
||||
struct ibft_table *table;
|
||||
/** Offset of first free byte within iBFT */
|
||||
unsigned int offset;
|
||||
};
|
||||
|
||||
/** Amount of space reserved for strings in a gPXE iBFT */
|
||||
#define IBFT_STRINGS_SIZE 384
|
||||
|
||||
/**
|
||||
* An iBFT created by gPXE
|
||||
*
|
||||
*/
|
||||
struct gpxe_ibft {
|
||||
/** The fixed section */
|
||||
struct ibft_table table;
|
||||
/** The Initiator section */
|
||||
struct ibft_initiator initiator __attribute__ (( aligned ( 16 ) ));
|
||||
/** The NIC section */
|
||||
struct ibft_nic nic __attribute__ (( aligned ( 16 ) ));
|
||||
/** The Target section */
|
||||
struct ibft_target target __attribute__ (( aligned ( 16 ) ));
|
||||
/** Strings block */
|
||||
char strings[IBFT_STRINGS_SIZE];
|
||||
} __attribute__ (( packed, aligned ( 16 ) ));
|
||||
|
||||
struct net_device;
|
||||
struct iscsi_session;
|
||||
|
||||
extern int ibft_fill_data ( struct net_device *netdev,
|
||||
struct iscsi_session *iscsi );
|
||||
|
||||
static inline int ibft_fill_data ( struct net_device *netdev __unused,
|
||||
struct iscsi_session *iscsi __unused ) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif /* _GPXE_IBFT_H */
|
||||
|
|
|
|||
Reference in New Issue