summaryrefslogtreecommitdiff
path: root/Omap35xxPkg/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.c
blob: bfd9f3be43f05e96b1cba998d47d74843ea86f59 (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
/** @file

 Copyright (c) 2011-2014, ARM Ltd. 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.

**/

#include "LcdGraphicsOutputDxe.h"

BOOLEAN mDisplayInitialized = FALSE;

LCD_MODE LcdModes[] = {
  {
    0, 640, 480,
    9, 4,
    96, 16, 48,
    2, 10, 33
  },
  {
    1, 800, 600,
    11, 2,
    120, 56, 64,
    5, 37, 22
  },
  {
    2, 1024, 768,
    6, 2,
    96, 16, 48,
    2, 10, 33
  },
};

LCD_INSTANCE mLcdTemplate = {
  LCD_INSTANCE_SIGNATURE,
  NULL, // Handle
  { // ModeInfo
    0, // Version
    0, // HorizontalResolution
    0, // VerticalResolution
    PixelBltOnly, // PixelFormat
    {
      0xF800, //RedMask;
      0x7E0, //GreenMask;
      0x1F, //BlueMask;
      0x0//ReservedMask
    }, // PixelInformation
    0, // PixelsPerScanLine
  },
  { // Mode
    3, // MaxMode;
    0, // Mode;
    NULL, // Info;
    0, // SizeOfInfo;
    0, // FrameBufferBase;
    0 // FrameBufferSize;
  },
  { // Gop
    LcdGraphicsQueryMode,  // QueryMode
    LcdGraphicsSetMode,    // SetMode
    LcdGraphicsBlt,        // Blt
    NULL                     // *Mode
  },
  { // DevicePath
    {
      {
        HARDWARE_DEVICE_PATH, HW_VENDOR_DP,
        { (UINT8) (sizeof(VENDOR_DEVICE_PATH)), (UINT8) ((sizeof(VENDOR_DEVICE_PATH)) >> 8) },
      },
      // Hardware Device Path for Lcd
      EFI_CALLER_ID_GUID // Use the driver's GUID
    },
    {
      END_DEVICE_PATH_TYPE,
      END_ENTIRE_DEVICE_PATH_SUBTYPE,
      { sizeof(EFI_DEVICE_PATH_PROTOCOL), 0}
    }
  }
};

EFI_STATUS
LcdInstanceContructor (
  OUT LCD_INSTANCE** NewInstance
  )
{
  LCD_INSTANCE* Instance;

  Instance = AllocateCopyPool (sizeof(LCD_INSTANCE), &mLcdTemplate);
  if (Instance == NULL) {
    return EFI_OUT_OF_RESOURCES;
  }

  Instance->Gop.Mode          = &Instance->Mode;
  Instance->Mode.Info         = &Instance->ModeInfo;

  *NewInstance = Instance;
  return EFI_SUCCESS;
}

EFI_STATUS
LcdPlatformGetVram (
  OUT EFI_PHYSICAL_ADDRESS*  VramBaseAddress,
  OUT UINTN*                 VramSize
  )
{
  EFI_STATUS             Status;
  EFI_CPU_ARCH_PROTOCOL  *Cpu;
  UINTN                  MaxSize;

  MaxSize = 0x500000;
  *VramSize = MaxSize;

  // Allocate VRAM from DRAM
  Status = gBS->AllocatePages (AllocateAnyPages, EfiBootServicesData, EFI_SIZE_TO_PAGES((MaxSize)), VramBaseAddress);
  if (EFI_ERROR(Status)) {
    return Status;
  }

  // Ensure the Cpu architectural protocol is already installed
  Status = gBS->LocateProtocol (&gEfiCpuArchProtocolGuid, NULL, (VOID **)&Cpu);
  ASSERT_EFI_ERROR(Status);

  // Mark the VRAM as un-cacheable. The VRAM is inside the DRAM, which is cacheable.
  Status = Cpu->SetMemoryAttributes (Cpu, *VramBaseAddress, *VramSize, EFI_MEMORY_UC);
  if (EFI_ERROR(Status)) {
    gBS->FreePool (VramBaseAddress);
    return Status;
  }

  return EFI_SUCCESS;
}

EFI_STATUS
DssSetMode (
  UINT32 VramBaseAddress,
  UINTN  ModeNumber
  )
{
  // Make sure the interface clock is running
  MmioWrite32 (CM_ICLKEN_DSS, EN_DSS);

  // Stop the functional clocks
  MmioAnd32 (CM_FCLKEN_DSS, ~(EN_DSS1 | EN_DSS2 | EN_TV));

  // Program the DSS clock divisor
  MmioWrite32 (CM_CLKSEL_DSS, 0x1000 | (LcdModes[ModeNumber].DssDivisor));

  // Start the functional clocks
  MmioOr32 (CM_FCLKEN_DSS, (EN_DSS1 | EN_DSS2 | EN_TV));

  // Wait for DSS to stabilize
  gBS->Stall(1);

  // Reset the subsystem
  MmioWrite32(DSS_SYSCONFIG, DSS_SOFTRESET);
  while (!(MmioRead32 (DSS_SYSSTATUS) & DSS_RESETDONE));

  // Configure LCD parameters
  MmioWrite32 (DISPC_SIZE_LCD,
               ((LcdModes[ModeNumber].HorizontalResolution - 1)
               | ((LcdModes[ModeNumber].VerticalResolution - 1) << 16))
              );
  MmioWrite32 (DISPC_TIMING_H,
               ( (LcdModes[ModeNumber].HSync - 1)
               | ((LcdModes[ModeNumber].HFrontPorch - 1) << 8)
               | ((LcdModes[ModeNumber].HBackPorch - 1) << 20))
              );
  MmioWrite32 (DISPC_TIMING_V,
               ( (LcdModes[ModeNumber].VSync - 1)
               | ((LcdModes[ModeNumber].VFrontPorch - 1) << 8)
               | ((LcdModes[ModeNumber].VBackPorch - 1) << 20))
              );

  // Set the framebuffer to only load frames (no gamma tables)
  MmioAnd32 (DISPC_CONFIG, CLEARLOADMODE);
  MmioOr32  (DISPC_CONFIG, LOAD_FRAME_ONLY);

  // Divisor for the pixel clock
  MmioWrite32(DISPC_DIVISOR, ((1 << 16) | LcdModes[ModeNumber].DispcDivisor) );

  // Set up the graphics layer
  MmioWrite32 (DISPC_GFX_PRELD, 0x2D8);
  MmioWrite32 (DISPC_GFX_BA0, VramBaseAddress);
  MmioWrite32 (DISPC_GFX_SIZE,
               ((LcdModes[ModeNumber].HorizontalResolution - 1)
               | ((LcdModes[ModeNumber].VerticalResolution - 1) << 16))
              );

  MmioWrite32(DISPC_GFX_ATTR, (GFXENABLE | RGB16 | BURSTSIZE16));

  // Start it all
  MmioOr32 (DISPC_CONTROL, (LCDENABLE | ACTIVEMATRIX | DATALINES24 | BYPASS_MODE | LCDENABLESIGNAL));
  MmioOr32 (DISPC_CONTROL, GOLCD);

  return EFI_SUCCESS;
}

EFI_STATUS
HwInitializeDisplay (
  UINTN VramBaseAddress,
  UINTN VramSize
  )
{
  EFI_STATUS    Status;
  UINT8         Data;
  EFI_TPL       OldTpl;
  EMBEDDED_EXTERNAL_DEVICE   *gTPS65950;

  // Enable power lines used by TFP410
  Status = gBS->LocateProtocol (&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950);
  ASSERT_EFI_ERROR (Status);

  OldTpl = gBS->RaiseTPL(TPL_NOTIFY);
  Data = VAUX_DEV_GRP_P1;
  Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VPLL2_DEV_GRP), 1, &Data);
  ASSERT_EFI_ERROR(Status);

  Data = VAUX_DEDICATED_18V;
  Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VPLL2_DEDICATED), 1, &Data);
  ASSERT_EFI_ERROR (Status);

  // Power up TFP410 (set GPIO2 on TPS - for BeagleBoard-xM)
  Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID2, GPIODATADIR1), 1, &Data);
  ASSERT_EFI_ERROR (Status);
  Data |= BIT2;
  Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID2, GPIODATADIR1), 1, &Data);
  ASSERT_EFI_ERROR (Status);

  Data = BIT2;
  Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID2, SETGPIODATAOUT1), 1, &Data);
  ASSERT_EFI_ERROR (Status);

  gBS->RestoreTPL(OldTpl);

  // Power up TFP410 (set GPIO 170 - for older BeagleBoards)
  MmioAnd32 (GPIO6_BASE + GPIO_OE, ~BIT10);
  MmioOr32  (GPIO6_BASE + GPIO_SETDATAOUT, BIT10);

  return EFI_SUCCESS;
}

EFI_STATUS
InitializeDisplay (
  IN LCD_INSTANCE* Instance
  )
{
  EFI_STATUS           Status;
  UINTN                VramSize;
  EFI_PHYSICAL_ADDRESS VramBaseAddress;

  Status = LcdPlatformGetVram (&VramBaseAddress, &VramSize);
  if (EFI_ERROR (Status)) {
    return Status;
  }

  Instance->Mode.FrameBufferBase = VramBaseAddress;
  Instance->Mode.FrameBufferSize = VramSize;

  Status = HwInitializeDisplay((UINTN)VramBaseAddress, VramSize);
  if (!EFI_ERROR (Status)) {
    mDisplayInitialized = TRUE;
  }

  return Status;
}

EFI_STATUS
EFIAPI
LcdGraphicsQueryMode (
  IN EFI_GRAPHICS_OUTPUT_PROTOCOL            *This,
	IN UINT32                                  ModeNumber,
	OUT UINTN                                  *SizeOfInfo,
	OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION   **Info
	)
{
	LCD_INSTANCE  *Instance;

	Instance = LCD_INSTANCE_FROM_GOP_THIS(This);

  if (!mDisplayInitialized) {
    InitializeDisplay (Instance);
  }

  // Error checking
	if ( (This == NULL) || (Info == NULL) || (SizeOfInfo == NULL) || (ModeNumber >= This->Mode->MaxMode) ) {
	  DEBUG((DEBUG_ERROR, "LcdGraphicsQueryMode: ERROR - For mode number %d : Invalid Parameter.\n", ModeNumber ));
		return EFI_INVALID_PARAMETER;
	}

  *Info = AllocateCopyPool(sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION), &Instance->ModeInfo);
  if (*Info == NULL) {
    return EFI_OUT_OF_RESOURCES;
  }

  *SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);

  (*Info)->Version = 0;
  (*Info)->HorizontalResolution = LcdModes[ModeNumber].HorizontalResolution;
  (*Info)->VerticalResolution = LcdModes[ModeNumber].VerticalResolution;
  (*Info)->PixelFormat = PixelBltOnly;

  return EFI_SUCCESS;
}

EFI_STATUS
EFIAPI
LcdGraphicsSetMode (
  IN EFI_GRAPHICS_OUTPUT_PROTOCOL   *This,
	IN UINT32                         ModeNumber
	)
{
	LCD_INSTANCE  *Instance;

	Instance = LCD_INSTANCE_FROM_GOP_THIS(This);

  if (ModeNumber >= Instance->Mode.MaxMode) {
    return EFI_UNSUPPORTED;
  }

  if (!mDisplayInitialized) {
    InitializeDisplay (Instance);
  }

  DssSetMode((UINT32)Instance->Mode.FrameBufferBase, ModeNumber);

  Instance->Mode.Mode = ModeNumber;
  Instance->ModeInfo.HorizontalResolution = LcdModes[ModeNumber].HorizontalResolution;
  Instance->ModeInfo.VerticalResolution = LcdModes[ModeNumber].VerticalResolution;

  return EFI_SUCCESS;
}

EFI_STATUS
EFIAPI
LcdGraphicsOutputDxeInitialize (
  IN EFI_HANDLE         ImageHandle,
  IN EFI_SYSTEM_TABLE   *SystemTable
  )
{
  EFI_STATUS Status = EFI_SUCCESS;
  LCD_INSTANCE* Instance;

  Status = LcdInstanceContructor (&Instance);
  if (EFI_ERROR(Status)) {
    goto EXIT;
  }

	// Install the Graphics Output Protocol and the Device Path
	Status = gBS->InstallMultipleProtocolInterfaces(
			&Instance->Handle,
			&gEfiGraphicsOutputProtocolGuid, &Instance->Gop,
			&gEfiDevicePathProtocolGuid,     &Instance->DevicePath,
			NULL
	   );

	if (EFI_ERROR(Status)) {
	  DEBUG((DEBUG_ERROR, "GraphicsOutputDxeInitialize: Can not install the protocol. Exit Status=%r\n", Status));
		goto EXIT;
	}

  // Register for an ExitBootServicesEvent
	// When ExitBootServices starts, this function here will make sure that the graphics driver will shut down properly,
	// i.e. it will free up all allocated memory and perform any necessary hardware re-configuration.
	/*Status = gBS->CreateEvent (
	    EVT_SIGNAL_EXIT_BOOT_SERVICES,
	    TPL_NOTIFY,
	    LcdGraphicsExitBootServicesEvent, NULL,
			&Instance->ExitBootServicesEvent
			);

	if (EFI_ERROR(Status)) {
	  DEBUG((DEBUG_ERROR, "GraphicsOutputDxeInitialize: Can not install the ExitBootServicesEvent handler. Exit Status=%r\n", Status));
		goto EXIT_ERROR_UNINSTALL_PROTOCOL;
	}*/

	// To get here, everything must be fine, so just exit
	goto EXIT;

//EXIT_ERROR_UNINSTALL_PROTOCOL:
	/* The following function could return an error message,
	 * however, to get here something must have gone wrong already,
	 * so preserve the original error, i.e. don't change
	 * the Status variable, even it fails to uninstall the protocol.
	 */
/*	gBS->UninstallMultipleProtocolInterfaces (
	    Instance->Handle,
	    &gEfiGraphicsOutputProtocolGuid, &Instance->Gop, // Uninstall Graphics Output protocol
	    &gEfiDevicePathProtocolGuid,     &Instance->DevicePath,     // Uninstall device path
	    NULL
	    );*/

EXIT:
	return Status;

}