3 Copyright (c) 2011-2012, ARM Ltd. All rights reserved.<BR>
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
15 #include <Library/IoLib.h>
16 #include <Library/MemoryAllocationLib.h>
18 #include <Drivers/PL111Lcd.h>
20 #include "LcdGraphicsOutputDxe.h"
22 /**********************************************************************
24 * This file contains all the bits of the PL111 that are
25 * platform independent.
27 **********************************************************************/
31 IN EFI_PHYSICAL_ADDRESS VramBaseAddress
34 // Define start of the VRAM. This never changes for any graphics mode
35 MmioWrite32(PL111_REG_LCD_UP_BASE
, (UINT32
) VramBaseAddress
);
36 MmioWrite32(PL111_REG_LCD_LP_BASE
, 0); // We are not using a double buffer
38 // Disable all interrupts from the PL111
39 MmioWrite32(PL111_REG_LCD_IMSC
, 0);
61 // Set the video mode timings and other relevant information
62 Status
= LcdPlatformGetTimings (ModeNumber
,
63 &HRes
,&HSync
,&HBackPorch
,&HFrontPorch
,
64 &VRes
,&VSync
,&VBackPorch
,&VFrontPorch
);
65 ASSERT_EFI_ERROR (Status
);
66 if (EFI_ERROR( Status
)) {
67 return EFI_DEVICE_ERROR
;
70 Status
= LcdPlatformGetBpp (ModeNumber
,&LcdBpp
);
71 ASSERT_EFI_ERROR (Status
);
72 if (EFI_ERROR( Status
)) {
73 return EFI_DEVICE_ERROR
;
76 // Disable the CLCD_LcdEn bit
77 LcdControl
= MmioRead32( PL111_REG_LCD_CONTROL
);
78 MmioWrite32(PL111_REG_LCD_CONTROL
, LcdControl
& ~1);
81 MmioWrite32 (PL111_REG_LCD_TIMING_0
, HOR_AXIS_PANEL(HBackPorch
, HFrontPorch
, HSync
, HRes
));
82 MmioWrite32 (PL111_REG_LCD_TIMING_1
, VER_AXIS_PANEL(VBackPorch
, VFrontPorch
, VSync
, VRes
));
83 MmioWrite32 (PL111_REG_LCD_TIMING_2
, CLK_SIG_POLARITY(HRes
));
84 MmioWrite32 (PL111_REG_LCD_TIMING_3
, 0);
86 // PL111_REG_LCD_CONTROL
87 LcdControl
= PL111_CTRL_LCD_EN
| PL111_CTRL_LCD_BPP(LcdBpp
) | PL111_CTRL_LCD_TFT
| PL111_CTRL_BGR
;
88 MmioWrite32(PL111_REG_LCD_CONTROL
, LcdControl
);
90 // Turn on power to the LCD Panel
91 LcdControl
|= PL111_CTRL_LCD_PWR
;
92 MmioWrite32(PL111_REG_LCD_CONTROL
, LcdControl
);
102 // Nothing to do in terms of hardware.
103 // We could switch off the monitor display if required