smbios.cc revision 5615 
1/*
2 * Copyright (c) 2008 The Regents of The University of Michigan
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 are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Gabe Black
29 */
30
31/*
32 * Copyright (c) 2008 The Hewlett-Packard Development Company
33 * All rights reserved.
34 *
35 * Redistribution and use of this software in source and binary forms,
36 * with or without modification, are permitted provided that the
37 * following conditions are met:
38 *
39 * The software must be used only for Non-Commercial Use which means any
40 * use which is NOT directed to receiving any direct monetary
41 * compensation for, or commercial advantage from such use.  Illustrative
42 * examples of non-commercial use are academic research, personal study,
43 * teaching, education and corporate research & development.
44 * Illustrative examples of commercial use are distributing products for
45 * commercial advantage and providing services using the software for
46 * commercial advantage.
47 *
48 * If you wish to use this software or functionality therein that may be
49 * covered by patents for commercial use, please contact:
50 *     Director of Intellectual Property Licensing
51 *     Office of Strategy and Technology
52 *     Hewlett-Packard Company
53 *     1501 Page Mill Road
54 *     Palo Alto, California  94304
55 *
56 * Redistributions of source code must retain the above copyright notice,
57 * this list of conditions and the following disclaimer.  Redistributions
58 * in binary form must reproduce the above copyright notice, this list of
59 * conditions and the following disclaimer in the documentation and/or
60 * other materials provided with the distribution.  Neither the name of
61 * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
62 * contributors may be used to endorse or promote products derived from
63 * this software without specific prior written permission.  No right of
64 * sublicense is granted herewith.  Derivatives of the software and
65 * output created using the software may be prepared, but only for
66 * Non-Commercial Uses.  Derivatives of the software may be shared with
67 * others provided: (i) the others agree to abide by the list of
68 * conditions herein which includes the Non-Commercial Use restrictions;
69 * and (ii) such Derivatives of the software include the above copyright
70 * notice to acknowledge the contribution from this software where
71 * applicable, this list of conditions and the disclaimer below.
72 *
73 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
74 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
75 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
76 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
77 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
78 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
79 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
80 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
81 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
82 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
83 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
84 *
85 * Authors: Gabe Black
86 */
87
88#include "arch/x86/bios/smbios.hh"
89#include "arch/x86/isa_traits.hh"
90#include "mem/port.hh"
91#include "params/X86SMBiosBiosInformation.hh"
92#include "params/X86SMBiosSMBiosStructure.hh"
93#include "params/X86SMBiosSMBiosTable.hh"
94#include "sim/byteswap.hh"
95#include "sim/host.hh"
96
97using namespace std;
98
99const char X86ISA::SMBios::SMBiosTable::SMBiosHeader::anchorString[] = "_SM_";
100const uint8_t X86ISA::SMBios::SMBiosTable::
101        SMBiosHeader::formattedArea[] = {0,0,0,0,0};
102const uint8_t X86ISA::SMBios::SMBiosTable::
103        SMBiosHeader::entryPointLength = 0x1F;
104const uint8_t X86ISA::SMBios::SMBiosTable::
105        SMBiosHeader::entryPointRevision = 0;
106const char X86ISA::SMBios::SMBiosTable::
107        SMBiosHeader::IntermediateHeader::anchorString[] = "_DMI_";
108
109template <class T>
110uint64_t
111composeBitVector(T vec)
112{
113    uint64_t val = 0;
114    typename T::iterator vecIt;
115    for (vecIt = vec.begin(); vecIt != vec.end(); vecIt++) {
116        val |= (1 << (*vecIt));
117    }
118    return val;
119}
120
121uint16_t
122X86ISA::SMBios::SMBiosStructure::writeOut(FunctionalPort * port, Addr addr)
123{
124    port->writeBlob(addr, (uint8_t *)(&type), 1);
125
126    uint8_t length = getLength();
127    port->writeBlob(addr + 1, (uint8_t *)(&length), 1);
128
129    uint16_t handleGuest = X86ISA::htog(handle);
130    port->writeBlob(addr + 2, (uint8_t *)(&handleGuest), 2);
131
132    return length + getStringLength();
133}
134
135X86ISA::SMBios::SMBiosStructure::SMBiosStructure(Params * p, uint8_t _type) :
136    SimObject(p), type(_type), handle(0), stringFields(false)
137{}
138
139void
140X86ISA::SMBios::SMBiosStructure::writeOutStrings(
141        FunctionalPort * port, Addr addr)
142{
143    std::vector<std::string>::iterator it;
144    Addr offset = 0;
145
146    const uint8_t nullTerminator = 0;
147
148    // If there are string fields but none of them are used, that's a
149    // special case which is handled by this if.
150    if (strings.size() == 0 && stringFields) {
151        port->writeBlob(addr + offset, (uint8_t *)(&nullTerminator), 1);
152        offset++;
153    } else {
154        for (it = strings.begin(); it != strings.end(); it++) {
155            port->writeBlob(addr + offset,
156                    (uint8_t *)it->c_str(), it->length() + 1);
157            offset += it->length() + 1;
158        }
159    }
160    port->writeBlob(addr + offset, (uint8_t *)(&nullTerminator), 1);
161}
162
163int
164X86ISA::SMBios::SMBiosStructure::getStringLength()
165{
166    int size = 0;
167    std::vector<std::string>::iterator it;
168
169    for (it = strings.begin(); it != strings.end(); it++) {
170        size += it->length() + 1;
171    }
172
173    return size + 1;
174}
175
176int
177X86ISA::SMBios::SMBiosStructure::addString(string & newString)
178{
179    stringFields = true;
180    // If a string is empty, treat it as not existing. The index for empty
181    // strings is 0.
182    if (newString.length() == 0)
183        return 0;
184    strings.push_back(newString);
185    return strings.size();
186}
187
188string
189X86ISA::SMBios::SMBiosStructure::readString(int n)
190{
191    assert(n > 0 && n <= strings.size());
192    return strings[n - 1];
193}
194
195void
196X86ISA::SMBios::SMBiosStructure::setString(int n, std::string & newString)
197{
198    assert(n > 0 && n <= strings.size());
199    strings[n - 1] = newString;
200}
201
202X86ISA::SMBios::BiosInformation::BiosInformation(Params * p) :
203        SMBiosStructure(p, Type),
204        startingAddrSegment(p->starting_addr_segment),
205        romSize(p->rom_size),
206        majorVer(p->major), minorVer(p->minor),
207        embContFirmwareMajor(p->emb_cont_firmware_major),
208        embContFirmwareMinor(p->emb_cont_firmware_minor)
209    {
210        vendor = addString(p->vendor);
211        version = addString(p->version);
212        releaseDate = addString(p->release_date);
213
214        characteristics = composeBitVector(p->characteristics);
215        characteristicExtBytes =
216            composeBitVector(p->characteristic_ext_bytes);
217    }
218
219uint16_t
220X86ISA::SMBios::BiosInformation::writeOut(FunctionalPort * port, Addr addr)
221{
222    uint8_t size = SMBiosStructure::writeOut(port, addr);
223
224    port->writeBlob(addr + 0x4, (uint8_t *)(&vendor), 1);
225    port->writeBlob(addr + 0x5, (uint8_t *)(&version), 1);
226
227    uint16_t startingAddrSegmentGuest = X86ISA::htog(startingAddrSegment);
228    port->writeBlob(addr + 0x6, (uint8_t *)(&startingAddrSegmentGuest), 2);
229
230    port->writeBlob(addr + 0x8, (uint8_t *)(&releaseDate), 1);
231    port->writeBlob(addr + 0x9, (uint8_t *)(&romSize), 1);
232
233    uint64_t characteristicsGuest = X86ISA::htog(characteristics);
234    port->writeBlob(addr + 0xA, (uint8_t *)(&characteristicsGuest), 8);
235
236    uint16_t characteristicExtBytesGuest =
237        X86ISA::htog(characteristicExtBytes);
238    port->writeBlob(addr + 0x12, (uint8_t *)(&characteristicExtBytesGuest), 2);
239
240    port->writeBlob(addr + 0x14, (uint8_t *)(&majorVer), 1);
241    port->writeBlob(addr + 0x15, (uint8_t *)(&minorVer), 1);
242    port->writeBlob(addr + 0x16, (uint8_t *)(&embContFirmwareMajor), 1);
243    port->writeBlob(addr + 0x17, (uint8_t *)(&embContFirmwareMinor), 1);
244
245    writeOutStrings(port, addr + getLength());
246
247    return size;
248}
249
250X86ISA::SMBios::SMBiosTable::SMBiosTable(Params * p) :
251    SimObject(p), structures(p->structures)
252{
253    smbiosHeader.majorVersion = p->major_version;
254    smbiosHeader.minorVersion = p->minor_version;
255    assert(p->major_version <= 9);
256    assert(p->minor_version <= 9);
257    smbiosHeader.intermediateHeader.smbiosBCDRevision =
258        (p->major_version << 4) | p->minor_version;
259}
260
261void
262X86ISA::SMBios::SMBiosTable::writeOut(FunctionalPort * port, Addr addr,
263        Addr &headerSize, Addr &structSize)
264{
265    headerSize = 0x1F;
266
267    /*
268     * The main header
269     */
270    uint8_t mainChecksum = 0;
271
272    port->writeBlob(addr, (uint8_t *)smbiosHeader.anchorString, 4);
273    for (int i = 0; i < 4; i++)
274        mainChecksum += smbiosHeader.anchorString[i];
275
276    // The checksum goes here, but we're figuring it out as we go.
277
278    port->writeBlob(addr + 0x5,
279            (uint8_t *)(&smbiosHeader.entryPointLength), 1);
280    mainChecksum += smbiosHeader.entryPointLength;
281    port->writeBlob(addr + 0x6,
282            (uint8_t *)(&smbiosHeader.majorVersion), 1);
283    mainChecksum += smbiosHeader.majorVersion;
284    port->writeBlob(addr + 0x7,
285            (uint8_t *)(&smbiosHeader.minorVersion), 1);
286    mainChecksum += smbiosHeader.minorVersion;
287    // Maximum structure size goes here, but we'll figure it out later.
288    port->writeBlob(addr + 0xA,
289            (uint8_t *)(&smbiosHeader.entryPointRevision), 1);
290    mainChecksum += smbiosHeader.entryPointRevision;
291    port->writeBlob(addr + 0xB,
292            (uint8_t *)(&smbiosHeader.formattedArea), 5);
293    for (int i = 0; i < 5; i++)
294        mainChecksum += smbiosHeader.formattedArea[i];
295
296    /*
297     * The intermediate header
298     */
299    uint8_t intChecksum = 0;
300
301    port->writeBlob(addr + 0x10,
302            (uint8_t *)smbiosHeader.intermediateHeader.anchorString, 5);
303    for (int i = 0; i < 5; i++)
304        intChecksum += smbiosHeader.intermediateHeader.anchorString[i];
305
306    // The checksum goes here, but we're figuring it out as we go.
307    // Then the length of the structure table which we'll find later
308
309    uint32_t tableAddrGuest =
310        X86ISA::htog(smbiosHeader.intermediateHeader.tableAddr);
311    port->writeBlob(addr + 0x18, (uint8_t *)(&tableAddrGuest), 4);
312    for (int i = 0; i < 4; i++) {
313        intChecksum += tableAddrGuest;
314        tableAddrGuest >>= 8;
315    }
316
317    uint16_t numStructs = X86ISA::gtoh(structures.size());
318    port->writeBlob(addr + 0x1C, (uint8_t *)(&numStructs), 2);
319    for (int i = 0; i < 2; i++) {
320        intChecksum += numStructs;
321        numStructs >>= 8;
322    }
323
324    port->writeBlob(addr + 0x1E,
325            (uint8_t *)(&smbiosHeader.intermediateHeader.smbiosBCDRevision),
326            1);
327    intChecksum += smbiosHeader.intermediateHeader.smbiosBCDRevision;
328
329    /*
330     * Structure table
331     */
332
333    Addr base = smbiosHeader.intermediateHeader.tableAddr;
334    Addr offset = 0;
335    uint16_t maxSize = 0;
336    std::vector<SMBiosStructure *>::iterator it;
337    for (it = structures.begin(); it != structures.end(); it++) {
338        uint16_t size = (*it)->writeOut(port, base + offset);
339        if (size > maxSize)
340            maxSize = size;
341        offset += size;
342    }
343
344    structSize = offset;
345
346    /*
347     * Header
348     */
349
350    maxSize = X86ISA::htog(maxSize);
351    port->writeBlob(addr + 0x8, (uint8_t *)(&maxSize), 2);
352    for (int i = 0; i < 2; i++) {
353        mainChecksum += maxSize;
354        maxSize >>= 8;
355    }
356
357    // Set the checksum
358    mainChecksum = -mainChecksum;
359    port->writeBlob(addr + 0x4, (uint8_t *)(&mainChecksum), 1);
360
361    /*
362     * Intermediate header
363     */
364
365    uint16_t tableSize = offset;
366    tableSize = X86ISA::htog(tableSize);
367    port->writeBlob(addr + 0x16, (uint8_t *)(&tableSize), 2);
368    for (int i = 0; i < 2; i++) {
369        intChecksum += tableSize;
370        tableSize >>= 8;
371    }
372
373    intChecksum = -intChecksum;
374    port->writeBlob(addr + 0x15, (uint8_t *)(&intChecksum), 1);
375}
376
377X86ISA::SMBios::BiosInformation *
378X86SMBiosBiosInformationParams::create()
379{
380    return new X86ISA::SMBios::BiosInformation(this);
381}
382
383X86ISA::SMBios::SMBiosTable *
384X86SMBiosSMBiosTableParams::create()
385{
386    return new X86ISA::SMBios::SMBiosTable(this);
387}
388