summaryrefslogtreecommitdiff
path: root/BaseTools/Source/C/GenPage/GenPage.c
blob: b6a5d01e3ea0e20f6ef347daec5276a86422ae70 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
/** @file

Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials                          
are licensed and made available under the terms and conditions of the BSD License         
which accompanies this distribution.  The full text of the license may be found at        
http://opensource.org/licenses/bsd-license.php                                            
                                                                                          
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             

Module Name:
  GenPage.c
  
Abstract:
  Pre-Create a 4G page table (2M pages).
  It's used in DUET x64 build needed to enter LongMode.
 
  Create 4G page table (2M pages)
 
                              Linear Address
    63    48 47   39 38           30 29       21 20                          0
   +--------+-------+---------------+-----------+-----------------------------+
               PML4   Directory-Ptr   Directory                 Offset

   Paging-Structures :=
                        PML4
                        (
                          Directory-Ptr Directory {512}
                        ) {4}
**/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "VirtualMemory.h"
#include "EfiUtilityMsgs.h"
#include "ParseInf.h"

#define EFI_PAGE_BASE_OFFSET_IN_LDR 0x70000
#define EFI_PAGE_BASE_ADDRESS       (EFI_PAGE_BASE_OFFSET_IN_LDR + 0x20000)

UINT32 gPageTableBaseAddress  = EFI_PAGE_BASE_ADDRESS;
UINT32 gPageTableOffsetInFile = EFI_PAGE_BASE_OFFSET_IN_LDR;

#define EFI_MAX_ENTRY_NUM     512

#define EFI_PML4_ENTRY_NUM    1
#define EFI_PDPTE_ENTRY_NUM   4
#define EFI_PDE_ENTRY_NUM     EFI_MAX_ENTRY_NUM

#define EFI_PML4_PAGE_NUM     1
#define EFI_PDPTE_PAGE_NUM    EFI_PML4_ENTRY_NUM
#define EFI_PDE_PAGE_NUM      (EFI_PML4_ENTRY_NUM * EFI_PDPTE_ENTRY_NUM)

#define EFI_PAGE_NUMBER       (EFI_PML4_PAGE_NUM + EFI_PDPTE_PAGE_NUM + EFI_PDE_PAGE_NUM)

#define EFI_SIZE_OF_PAGE      0x1000
#define EFI_PAGE_SIZE_2M      0x200000

#define CONVERT_BIN_PAGE_ADDRESS(a)  ((UINT8 *) a - PageTable + gPageTableBaseAddress)

//
// Utility Name
//
#define UTILITY_NAME  "GenPage"

//
// Utility version information
//
#define UTILITY_MAJOR_VERSION 0
#define UTILITY_MINOR_VERSION 1

void
Version (
  void
  )
/*++

Routine Description:

  Displays the standard utility information to SDTOUT

Arguments:

  None

Returns:

  None

--*/
{
  printf ("%s Version %d.%d Build %s\n", UTILITY_NAME, UTILITY_MAJOR_VERSION, UTILITY_MINOR_VERSION, __BUILD_VERSION);
}

VOID
Usage (
  void
  )
{
  printf ("Usage: GenPage.exe [options] EfiLoaderImageName \n\n\
Copyright (c) 2008 - 2013, Intel Corporation.  All rights reserved.\n\n\
  Utility to generate the EfiLoader image containing a page table.\n\n\
optional arguments:\n\
  -h, --help            Show this help message and exit\n\
  --version             Show program's version number and exit\n\
  -d [DEBUG], --debug [DEBUG]\n\
                        Output DEBUG statements, where DEBUG_LEVEL is 0 (min)\n\
                        - 9 (max)\n\
  -v, --verbose         Print informational statements\n\
  -q, --quiet           Returns the exit code, error messages will be\n\
                        displayed\n\
  -s, --silent          Returns only the exit code; informational and error\n\
                        messages are not displayed\n\
  -o OUTPUT_FILENAME, --output OUTPUT_FILENAME\n\
                        Output file contain both the non-page table part and\n\
                        the page table\n\
  -b BASE_ADDRESS, --baseaddr BASE_ADDRESS\n\
                        The page table location\n\
  -f OFFSET, --offset OFFSET\n\
                        The position that the page table will appear in the\n\
                        output file\n\
  --sfo                 Reserved for future use\n");

}

void *
CreateIdentityMappingPageTables (
  void
  )
/*++

Routine Description:
  To create 4G PAE 2M pagetable

Return:
  void * - buffer containing created pagetable

--*/
{
  UINT64                                        PageAddress;
  UINT8                                         *PageTable;
  UINT8                                         *PageTablePtr;
  int                                           PML4Index;
  int                                           PDPTEIndex;
  int                                           PDEIndex;
  X64_PAGE_MAP_AND_DIRECTORY_POINTER_2MB_4K     *PageMapLevel4Entry;
  X64_PAGE_MAP_AND_DIRECTORY_POINTER_2MB_4K     *PageDirectoryPointerEntry;
  X64_PAGE_TABLE_ENTRY_2M                       *PageDirectoryEntry2MB;

  PageTable = (void *)malloc (EFI_PAGE_NUMBER * EFI_SIZE_OF_PAGE);
  memset (PageTable, 0, (EFI_PAGE_NUMBER * EFI_SIZE_OF_PAGE));
  PageTablePtr = PageTable;

  PageAddress = 0;

  //
  //  Page Table structure 3 level 2MB.
  //
  //                   Page-Map-Level-4-Table        : bits 47-39
  //                   Page-Directory-Pointer-Table  : bits 38-30
  //
  //  Page Table 2MB : Page-Directory(2M)            : bits 29-21
  //
  //

  PageMapLevel4Entry = (X64_PAGE_MAP_AND_DIRECTORY_POINTER_2MB_4K *)PageTablePtr;

  for (PML4Index = 0; PML4Index < EFI_PML4_ENTRY_NUM; PML4Index++, PageMapLevel4Entry++) {
    //
    // Each Page-Map-Level-4-Table Entry points to the base address of a Page-Directory-Pointer-Table Entry
    //  
    PageTablePtr += EFI_SIZE_OF_PAGE;
    PageDirectoryPointerEntry = (X64_PAGE_MAP_AND_DIRECTORY_POINTER_2MB_4K *)PageTablePtr;

    //
    // Make a Page-Map-Level-4-Table Entry
    //
    PageMapLevel4Entry->Uint64 = (UINT64)(UINT32)(CONVERT_BIN_PAGE_ADDRESS (PageDirectoryPointerEntry));
    PageMapLevel4Entry->Bits.ReadWrite = 1;
    PageMapLevel4Entry->Bits.Present = 1;

    for (PDPTEIndex = 0; PDPTEIndex < EFI_PDPTE_ENTRY_NUM; PDPTEIndex++, PageDirectoryPointerEntry++) {
      //
      // Each Page-Directory-Pointer-Table Entry points to the base address of a Page-Directory Entry
      //       
      PageTablePtr += EFI_SIZE_OF_PAGE;
      PageDirectoryEntry2MB = (X64_PAGE_TABLE_ENTRY_2M *)PageTablePtr;

      //
      // Make a Page-Directory-Pointer-Table Entry
      //
      PageDirectoryPointerEntry->Uint64 = (UINT64)(UINT32)(CONVERT_BIN_PAGE_ADDRESS (PageDirectoryEntry2MB));
      PageDirectoryPointerEntry->Bits.ReadWrite = 1;
      PageDirectoryPointerEntry->Bits.Present = 1;

      for (PDEIndex = 0; PDEIndex < EFI_PDE_ENTRY_NUM; PDEIndex++, PageDirectoryEntry2MB++) {
        //
        // Make a Page-Directory Entry
        //
        PageDirectoryEntry2MB->Uint64 = (UINT64)PageAddress;
        PageDirectoryEntry2MB->Bits.ReadWrite = 1;
        PageDirectoryEntry2MB->Bits.Present = 1;
        PageDirectoryEntry2MB->Bits.MustBe1 = 1;

        PageAddress += EFI_PAGE_SIZE_2M;
      }
    }
  }

  return PageTable;
}

INT32
GenBinPage (
  void *BaseMemory,
  char *NoPageFileName,
  char *PageFileName
  )
/*++

Routine Description:
  Write the buffer containing page table to file at a specified offset.
  Here the offset is defined as EFI_PAGE_BASE_OFFSET_IN_LDR.

Arguments:
  BaseMemory     - buffer containing page table
  NoPageFileName - file to write page table
  PageFileName   - file save to after writing

return:
  0  : successful
  -1 : failed

--*/
{
  FILE  *PageFile;
  FILE  *NoPageFile;
  UINT8 Data;
  unsigned long FileSize;

  //
  // Open files
  //
  PageFile = fopen (LongFilePath (PageFileName), "w+b");
  if (PageFile == NULL) {
    Error (NoPageFileName, 0, 0x4002, "Invalid parameter option", "Output File %s open failure", PageFileName);
    return -1;
  }

  NoPageFile = fopen (LongFilePath (NoPageFileName), "r+b");
  if (NoPageFile == NULL) {
    Error (NoPageFileName, 0, 0x4002, "Invalid parameter option", "Input File %s open failure", NoPageFileName);
    fclose (PageFile);
    return -1;
  }

  //
  // Check size - should not be great than EFI_PAGE_BASE_OFFSET_IN_LDR
  //
  fseek (NoPageFile, 0, SEEK_END);
  FileSize = ftell (NoPageFile);
  fseek (NoPageFile, 0, SEEK_SET);
  if (FileSize > gPageTableOffsetInFile) {
    Error (NoPageFileName, 0, 0x4002, "Invalid parameter option", "Input file size (0x%lx) exceeds the Page Table Offset (0x%x)", FileSize, (unsigned) gPageTableOffsetInFile);
    fclose (PageFile);
    fclose (NoPageFile);
    return -1;
  }

  //
  // Write data
  //
  while (fread (&Data, sizeof(UINT8), 1, NoPageFile)) {
    fwrite (&Data, sizeof(UINT8), 1, PageFile);
  }

  //
  // Write PageTable
  //
  fseek (PageFile, gPageTableOffsetInFile, SEEK_SET);
  fwrite (BaseMemory, (EFI_PAGE_NUMBER * EFI_SIZE_OF_PAGE), 1, PageFile);

  //
  // Close files
  //
  fclose (PageFile);
  fclose (NoPageFile);

  return 0;
}

int
main (
  int argc,
  char **argv
  )
{
  VOID        *BaseMemory;
  INTN        result;
  CHAR8       *OutputFile = NULL;
  CHAR8       *InputFile = NULL;
  EFI_STATUS  Status;
  UINT64      TempValue;

  SetUtilityName("GenPage");

  if (argc == 1) {
    Usage();
    return STATUS_ERROR;
  }
  
  argc --;
  argv ++;

  if ((stricmp (argv[0], "-h") == 0) || (stricmp (argv[0], "--help") == 0)) {
    Usage();
    return 0;    
  }

  if (stricmp (argv[0], "--version") == 0) {
    Version();
    return 0;    
  }
  
  while (argc > 0) {
    if ((stricmp (argv[0], "-o") == 0) || (stricmp (argv[0], "--output") == 0)) {
      if (argv[1] == NULL || argv[1][0] == '-') {
        Error (NULL, 0, 1003, "Invalid option value", "Output file is missing for -o option");
        return STATUS_ERROR;
      }
      OutputFile = argv[1];
      argc -= 2;
      argv += 2;
      continue; 
    }
    
    if ((stricmp (argv[0], "-b") == 0) || (stricmp (argv[0], "--baseaddr") == 0)) {
      if (argv[1] == NULL || argv[1][0] == '-') {
        Error (NULL, 0, 1003, "Invalid option value", "Base address is missing for -b option");
        return STATUS_ERROR;
      }
      Status = AsciiStringToUint64 (argv[1], FALSE, &TempValue);
      if (EFI_ERROR (Status)) {
        Error (NULL, 0, 1003, "Invalid option value", "Base address is not valid intergrator");
        return STATUS_ERROR;
      }
      gPageTableBaseAddress = (UINT32) TempValue;
      argc -= 2;
      argv += 2;
      continue; 
    }
    
    if ((stricmp (argv[0], "-f") == 0) || (stricmp (argv[0], "--offset") == 0)) {
      if (argv[1] == NULL || argv[1][0] == '-') {
        Error (NULL, 0, 1003, "Invalid option value", "Offset is missing for -f option");
        return STATUS_ERROR;
      }
      Status = AsciiStringToUint64 (argv[1], FALSE, &TempValue);
      if (EFI_ERROR (Status)) {
        Error (NULL, 0, 1003, "Invalid option value", "Offset is not valid intergrator");
        return STATUS_ERROR;
      }
      gPageTableOffsetInFile = (UINT32) TempValue;
      argc -= 2;
      argv += 2;
      continue; 
    }

    if ((stricmp (argv[0], "-q") == 0) || (stricmp (argv[0], "--quiet") == 0)) {
      argc --;
      argv ++;
      continue; 
    }
    
    if ((stricmp (argv[0], "-v") ==0) || (stricmp (argv[0], "--verbose") == 0)) {
      argc --;
      argv ++;
      continue; 
    }
    
    if ((stricmp (argv[0], "-d") == 0) || (stricmp (argv[0], "--debug") == 0)) {
      if (argv[1] == NULL || argv[1][0] == '-') {
        Error (NULL, 0, 1003, "Invalid option value", "Debug Level is not specified.");
        return STATUS_ERROR;
      }
      Status = AsciiStringToUint64 (argv[1], FALSE, &TempValue);
      if (EFI_ERROR (Status)) {
        Error (NULL, 0, 1003, "Invalid option value", "Debug Level is not valid intergrator.");
        return STATUS_ERROR;
      }
      if (TempValue > 9) {
        Error (NULL, 0, 1003, "Invalid option value", "Debug Level range is 0-9, currnt input level is %d", (int) TempValue);
        return STATUS_ERROR;
      }
      argc -= 2;
      argv += 2;
      continue; 
    }

    if (argv[0][0] == '-') {
      Error (NULL, 0, 1000, "Unknown option", argv[0]);
      return STATUS_ERROR;
    }
    
    //
    // Don't recognize the paramter.
    //
    InputFile = argv[0];
    argc--;
    argv++;
  }
  
  if (InputFile == NULL) {
    Error (NULL, 0, 1003, "Invalid option value", "Input file is not specified");
    return STATUS_ERROR;
  }
  
  //
  // Create X64 page table
  //
  BaseMemory = CreateIdentityMappingPageTables ();

  //
  // Add page table to binary file
  //
  result = GenBinPage (BaseMemory, InputFile, OutputFile);
  if (result < 0) {
    return STATUS_ERROR;
  }

  return 0;
}