1 /*
2 * Copyright (C) 2009 Fen Systems Ltd <mbrown@fensystems.co.uk>.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
20 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
21 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
28 * OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 FILE_LICENCE ( BSD2 );
32
33 /** @file
34 *
35 * SRP boot firmware table
36 *
37 */
38
39 #include <assert.h>
40 #include <realmode.h>
41 #include <gpxe/srp.h>
42 #include <gpxe/ib_srp.h>
43 #include <gpxe/acpi.h>
44 #include <gpxe/sbft.h>
45
46 #define sbftab __use_data16 ( sbftab )
47 /** The sBFT used by gPXE */
48 struct gpxe_sbft __data16 ( sbftab ) = {
49 /* Table header */
50 .table = {
51 /* ACPI header */
52 .acpi = {
53 .signature = SBFT_SIG,
54 .length = sizeof ( sbftab ),
55 .revision = 1,
56 .oem_id = "FENSYS",
57 .oem_table_id = "gPXE",
58 },
59 .scsi_offset = offsetof ( typeof ( sbftab ), scsi ),
60 .srp_offset = offsetof ( typeof ( sbftab ), srp ),
61 .ib_offset = offsetof ( typeof ( sbftab ), ib ),
62 },
63 };
64
65 /**
66 * Fill in all variable portions of sBFT
67 *
68 * @v srp SRP device
69 * @ret rc Return status code
70 */
sbft_fill_data(struct srp_device * srp)71 int sbft_fill_data ( struct srp_device *srp ) {
72 struct sbft_scsi_subtable *sbft_scsi = &sbftab.scsi;
73 struct sbft_srp_subtable *sbft_srp = &sbftab.srp;
74 struct sbft_ib_subtable *sbft_ib = &sbftab.ib;
75 struct ib_srp_parameters *ib_params;
76 struct segoff rm_sbftab = {
77 .segment = rm_ds,
78 .offset = __from_data16 ( &sbftab ),
79 };
80
81 /* Fill in the SCSI subtable */
82 memcpy ( &sbft_scsi->lun, &srp->lun, sizeof ( sbft_scsi->lun ) );
83
84 /* Fill in the SRP subtable */
85 memcpy ( &sbft_srp->port_ids, &srp->port_ids,
86 sizeof ( sbft_srp->port_ids ) );
87
88 /* Fill in the IB subtable */
89 assert ( srp->transport == &ib_srp_transport );
90 ib_params = ib_srp_params ( srp );
91 memcpy ( &sbft_ib->sgid, &ib_params->sgid, sizeof ( sbft_ib->sgid ) );
92 memcpy ( &sbft_ib->dgid, &ib_params->dgid, sizeof ( sbft_ib->dgid ) );
93 memcpy ( &sbft_ib->service_id, &ib_params->service_id,
94 sizeof ( sbft_ib->service_id ) );
95 sbft_ib->pkey = ib_params->pkey;
96
97 /* Update checksum */
98 acpi_fix_checksum ( &sbftab.table.acpi );
99
100 DBGC ( &sbftab, "SRP Boot Firmware Table at %04x:%04x:\n",
101 rm_sbftab.segment, rm_sbftab.offset );
102 DBGC_HDA ( &sbftab, rm_sbftab, &sbftab, sizeof ( sbftab ) );
103
104 return 0;
105 }
106