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/** @file
Copyright (c) 2012-2018, ARM Ltd. All rights reserved.
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 <PiDxe.h>
#include <Library/ArmPlatformSysConfigLib.h>
#include <Library/PcdLib.h>
#include <Library/DebugLib.h>
#include <Library/LcdPlatformLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Protocol/Cpu.h>
#include <Protocol/EdidDiscovered.h>
#include <Protocol/EdidActive.h>
#include <ArmPlatform.h>
typedef struct {
UINT32 Mode;
UINT32 OscFreq;
// These are used by HDLCD
SCAN_TIMINGS Horizontal;
SCAN_TIMINGS Vertical;
} DISPLAY_MODE;
/** The display modes supported by the platform.
**/
STATIC DISPLAY_MODE mDisplayModes[] = {
{ // Mode 0 : VGA : 640 x 480 x 24 bpp
VGA,
VGA_OSC_FREQUENCY,
{VGA_H_RES_PIXELS, VGA_H_SYNC, VGA_H_BACK_PORCH, VGA_H_FRONT_PORCH},
{VGA_V_RES_PIXELS, VGA_V_SYNC, VGA_V_BACK_PORCH, VGA_V_FRONT_PORCH}
},
{ // Mode 1 : SVGA : 800 x 600 x 24 bpp
SVGA,
SVGA_OSC_FREQUENCY,
{SVGA_H_RES_PIXELS, SVGA_H_SYNC, SVGA_H_BACK_PORCH, SVGA_H_FRONT_PORCH},
{SVGA_V_RES_PIXELS, SVGA_V_SYNC, SVGA_V_BACK_PORCH, SVGA_V_FRONT_PORCH}
},
{ // Mode 2 : XGA : 1024 x 768 x 24 bpp
XGA,
XGA_OSC_FREQUENCY,
{XGA_H_RES_PIXELS, XGA_H_SYNC, XGA_H_BACK_PORCH, XGA_H_FRONT_PORCH},
{XGA_V_RES_PIXELS, XGA_V_SYNC, XGA_V_BACK_PORCH, XGA_V_FRONT_PORCH}
},
{ // Mode 3 : SXGA : 1280 x 1024 x 24 bpp
SXGA,
(SXGA_OSC_FREQUENCY/2),
{SXGA_H_RES_PIXELS, SXGA_H_SYNC, SXGA_H_BACK_PORCH, SXGA_H_FRONT_PORCH},
{SXGA_V_RES_PIXELS, SXGA_V_SYNC, SXGA_V_BACK_PORCH, SXGA_V_FRONT_PORCH}
},
{ // Mode 4 : UXGA : 1600 x 1200 x 24 bpp
UXGA,
(UXGA_OSC_FREQUENCY/2),
{UXGA_H_RES_PIXELS, UXGA_H_SYNC, UXGA_H_BACK_PORCH, UXGA_H_FRONT_PORCH},
{UXGA_V_RES_PIXELS, UXGA_V_SYNC, UXGA_V_BACK_PORCH, UXGA_V_FRONT_PORCH}
},
{ // Mode 5 : HD : 1920 x 1080 x 24 bpp
HD,
(HD_OSC_FREQUENCY/2),
{HD_H_RES_PIXELS, HD_H_SYNC, HD_H_BACK_PORCH, HD_H_FRONT_PORCH},
{HD_V_RES_PIXELS, HD_V_SYNC, HD_V_BACK_PORCH, HD_V_FRONT_PORCH}
}
};
EFI_EDID_DISCOVERED_PROTOCOL mEdidDiscovered = {
0,
NULL
};
EFI_EDID_ACTIVE_PROTOCOL mEdidActive = {
0,
NULL
};
/** HDLCD platform specific initialization function.
@param[in] Handle Handle to the LCD device instance.
@retval EFI_SUCCESS Plaform library initialized successfully.
@retval EFI_UNSUPPORTED PcdGopPixelFormat must be
PixelRedGreenBlueReserved8BitPerColor OR
PixelBlueGreenRedReserved8BitPerColor
any other format is not supported.
@retval !(EFI_SUCCESS) Other errors.
**/
EFI_STATUS
LcdPlatformInitializeDisplay (
IN EFI_HANDLE Handle
)
{
EFI_STATUS Status;
EFI_GRAPHICS_PIXEL_FORMAT PixelFormat;
// PixelBitMask and PixelBltOnly pixel formats are not supported
PixelFormat = FixedPcdGet32 (PcdGopPixelFormat);
if (PixelFormat != PixelRedGreenBlueReserved8BitPerColor &&
PixelFormat != PixelBlueGreenRedReserved8BitPerColor) {
ASSERT (PixelFormat == PixelRedGreenBlueReserved8BitPerColor ||
PixelFormat == PixelBlueGreenRedReserved8BitPerColor);
return EFI_UNSUPPORTED;
}
// Set the FPGA multiplexer to select the video output from the
// motherboard or the daughterboard
Status = ArmPlatformSysConfigSet (
SYS_CFG_MUXFPGA,
ARM_VE_DAUGHTERBOARD_1_SITE
);
if (EFI_ERROR (Status)) {
return Status;
}
// Install the EDID Protocols
Status = gBS->InstallMultipleProtocolInterfaces (
&Handle,
&gEfiEdidDiscoveredProtocolGuid,
&mEdidDiscovered,
&gEfiEdidActiveProtocolGuid,
&mEdidActive,
NULL
);
return Status;
}
/** Allocate VRAM memory in DRAM for the framebuffer
(unless it is reserved already).
The allocated address can be used to set the framebuffer.
@param[out] VramBaseAddress A pointer to the framebuffer address.
@param[out] VramSize A pointer to the size of the framebuffer
in bytes
@retval EFI_SUCCESS Framebuffer memory allocated successfully.
@retval !(EFI_SUCCESS) Other errors.
**/
EFI_STATUS
LcdPlatformGetVram (
OUT EFI_PHYSICAL_ADDRESS* VramBaseAddress,
OUT UINTN* VramSize
)
{
EFI_STATUS Status;
EFI_ALLOCATE_TYPE AllocationType;
EFI_CPU_ARCH_PROTOCOL *Cpu;
ASSERT (VramBaseAddress != NULL);
ASSERT (VramSize != NULL);
// Set the vram size
*VramSize = LCD_VRAM_SIZE;
*VramBaseAddress = (EFI_PHYSICAL_ADDRESS)LCD_VRAM_CORE_TILE_BASE;
// Allocate the VRAM from the DRAM so that nobody else uses it.
if (*VramBaseAddress == 0) {
AllocationType = AllocateAnyPages;
} else {
AllocationType = AllocateAddress;
}
Status = gBS->AllocatePages (
AllocationType,
EfiReservedMemoryType,
EFI_SIZE_TO_PAGES (((UINTN)LCD_VRAM_SIZE)),
VramBaseAddress
);
if (EFI_ERROR (Status)) {
ASSERT_EFI_ERROR (Status);
return Status;
}
// Ensure the Cpu architectural protocol is already installed
Status = gBS->LocateProtocol (
&gEfiCpuArchProtocolGuid,
NULL,
(VOID **)&Cpu
);
if (!EFI_ERROR (Status)) {
// The VRAM is inside the DRAM, which is cacheable.
// Mark the VRAM as write-combining (uncached) and non-executable.
Status = Cpu->SetMemoryAttributes (
Cpu,
*VramBaseAddress,
*VramSize,
EFI_MEMORY_WC | EFI_MEMORY_XP
);
}
if (EFI_ERROR (Status)) {
ASSERT_EFI_ERROR (Status);
gBS->FreePages (*VramBaseAddress, EFI_SIZE_TO_PAGES (*VramSize));
return Status;
}
return EFI_SUCCESS;
}
/** Return total number of modes supported.
Note: Valid mode numbers are 0 to MaxMode - 1
See Section 12.9 of the UEFI Specification 2.7
@retval UINT32 Mode Number.
**/
UINT32
LcdPlatformGetMaxMode (VOID)
{
// The following line will report correctly the total number of graphics modes
// that could be supported by the graphics driver
return (sizeof (mDisplayModes) / sizeof (DISPLAY_MODE));
}
/** Set the requested display mode.
@param[in] ModeNumber Mode Number.
@retval EFI_SUCCESS Mode set successfully.
@retval EFI_INVALID_PARAMETER Requested mode not found.
@retval !(EFI_SUCCESS) Other errors.
**/
EFI_STATUS
LcdPlatformSetMode (
IN UINT32 ModeNumber
)
{
EFI_STATUS Status;
if (ModeNumber >= LcdPlatformGetMaxMode ()) {
ASSERT (FALSE);
return EFI_INVALID_PARAMETER;
}
// Set the video mode oscillator
Status = ArmPlatformSysConfigSetDevice (
SYS_CFG_OSC_SITE1,
FixedPcdGet32 (PcdHdLcdVideoModeOscId),
mDisplayModes[ModeNumber].OscFreq
);
if (EFI_ERROR (Status)) {
ASSERT_EFI_ERROR (Status);
return Status;
}
// Set the DVI into the new mode
Status = ArmPlatformSysConfigSet (
SYS_CFG_DVIMODE,
mDisplayModes[ModeNumber].Mode
);
if (EFI_ERROR (Status)) {
ASSERT_EFI_ERROR (Status);
return Status;
}
// Set the multiplexer
Status = ArmPlatformSysConfigSet (
SYS_CFG_MUXFPGA,
ARM_VE_DAUGHTERBOARD_1_SITE
);
ASSERT_EFI_ERROR (Status);
return Status;
}
/** Return information for the requested mode number.
@param[in] ModeNumber Mode Number.
@param[out] Info Pointer for returned mode information
(on success).
@retval EFI_SUCCESS Mode information for the requested mode
returned successfully.
@retval EFI_INVALID_PARAMETER Requested mode not found.
**/
EFI_STATUS
LcdPlatformQueryMode (
IN UINT32 ModeNumber,
OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info
)
{
ASSERT (Info != NULL);
if (ModeNumber >= LcdPlatformGetMaxMode ()) {
ASSERT (FALSE);
return EFI_INVALID_PARAMETER;
}
Info->Version = 0;
Info->HorizontalResolution = mDisplayModes[ModeNumber].Horizontal.Resolution;
Info->VerticalResolution = mDisplayModes[ModeNumber].Vertical.Resolution;
Info->PixelsPerScanLine = mDisplayModes[ModeNumber].Horizontal.Resolution;
Info->PixelFormat = FixedPcdGet32 (PcdGopPixelFormat);
return EFI_SUCCESS;
}
/** Return display timing information for the requested mode number.
@param[in] ModeNumber Mode Number.
@param[out] Horizontal Pointer to horizontal timing parameters.
(Resolution, Sync, Back porch, Front porch)
@param[out] Vertical Pointer to vertical timing parameters.
(Resolution, Sync, Back porch, Front porch)
@retval EFI_SUCCESS Display timing information for the requested
mode returned successfully.
@retval EFI_INVALID_PARAMETER Requested mode not found.
**/
EFI_STATUS
LcdPlatformGetTimings (
IN UINT32 ModeNumber,
OUT SCAN_TIMINGS ** Horizontal,
OUT SCAN_TIMINGS ** Vertical
)
{
// One of the pointers is NULL
ASSERT (Horizontal != NULL);
ASSERT (Vertical != NULL);
if (ModeNumber >= LcdPlatformGetMaxMode ()) {
ASSERT (FALSE);
return EFI_INVALID_PARAMETER;
}
*Horizontal = &mDisplayModes[ModeNumber].Horizontal;
*Vertical = &mDisplayModes[ModeNumber].Vertical;
return EFI_SUCCESS;
}
/** Return bits per pixel information for a mode number.
@param[in] ModeNumber Mode Number.
@param[out] Bpp Pointer to bits per pixel information.
@retval EFI_SUCCESS Bits per pixel information for the requested
mode returned successfully.
@retval EFI_INVALID_PARAMETER Requested mode not found.
**/
EFI_STATUS
LcdPlatformGetBpp (
IN UINT32 ModeNumber,
OUT LCD_BPP * Bpp
)
{
if (ModeNumber >= LcdPlatformGetMaxMode ()) {
ASSERT (FALSE);
return EFI_INVALID_PARAMETER;
}
*Bpp = LCD_BITS_PER_PIXEL_24;
return EFI_SUCCESS;
}
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