forked from Imagelibrary/rtems
i386: doxygen and comments related to VESA real mode framebuffer
This commit is contained in:
Jan Dolezal
committed by
Gedare Bloom
Gedare Bloom
parent
d78eac64a8
commit
038e1dba31
@@ -1,35 +1,39 @@
|
||||
/*
|
||||
* FB driver for graphic hardware compatible with VESA Bios Extension
|
||||
* Real mode interface utilized
|
||||
* Tested on real HW.
|
||||
/**
|
||||
* @file fb_vesa_rm.c
|
||||
*
|
||||
* Copyright (c) 2014 - CTU in Prague
|
||||
* Jan Doležal ( dolezj21@fel.cvut.cz )
|
||||
* @ingroup i386_pc386
|
||||
*
|
||||
* The license and distribution terms for this file may be
|
||||
* found in the file LICENSE in this distribution or at
|
||||
* http://www.rtems.org/license/LICENSE.
|
||||
* @brief FB driver for graphic hardware compatible with VESA Bios Extension
|
||||
* Real mode interface utilized
|
||||
* Tested on real HW.
|
||||
*
|
||||
* The code for rtems_buffer_* functions were greatly
|
||||
* inspired or coppied from:
|
||||
* - RTEMS fb_cirrus.c - Alexandru-Sever Horin (alex.sever.h@gmail.com)
|
||||
* Public sources related:
|
||||
* - VESA BIOS EXTENSION (VBE) Core Function Standard, Ver: 3.0, Sep 16, 1998
|
||||
* - VESA Enhanced Extended Display Identification Data (E-EDID) Standard
|
||||
* Release A, Revision 2, September 25, 2006
|
||||
*
|
||||
* Public sources related:
|
||||
* - VESA BIOS EXTENSION (VBE) Core Function Standard, Ver: 3.0, Sep 16, 1998
|
||||
* - VESA Enhanced Extended Display Identification Data (E-EDID) Standard
|
||||
* Release A, Revision 2, September 25, 2006
|
||||
* Hardware is completely initialized upon boot of the system.
|
||||
* Therefore there is no way to change graphics mode later.
|
||||
*
|
||||
* Interrupt 0x10 is used for entering graphics BIOS.
|
||||
*
|
||||
* Driver reads parameter from multiboot command line to setup video:
|
||||
* "--video=<resX>x<resY>[-<bpp>]"
|
||||
* If cmdline parameter is not specified an attempt for obtaining
|
||||
* resolution from display attached is made.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Hardware is completely initialized upon boot of the system.
|
||||
* Therefore there is no way to change graphics mode later.
|
||||
* Copyright (c) 2014 - CTU in Prague
|
||||
* Jan Doležal ( dolezj21@fel.cvut.cz )
|
||||
*
|
||||
* Interrupt 0x10 is used for entering graphics BIOS.
|
||||
* The license and distribution terms for this file may be
|
||||
* found in the file LICENSE in this distribution or at
|
||||
* http://www.rtems.org/license/LICENSE.
|
||||
*
|
||||
* Driver reads parameter from multiboot command line to setup video:
|
||||
* "--video=<resX>x<resY>[-<bpp>]"
|
||||
* If cmdline parameter is not specified an attempt for obtaining
|
||||
* resolution from display attached is made.
|
||||
* The code for rtems_buffer_* functions were greatly
|
||||
* inspired or coppied from:
|
||||
* - RTEMS fb_cirrus.c - Alexandru-Sever Horin (alex.sever.h@gmail.com)
|
||||
*/
|
||||
|
||||
#include <bsp.h>
|
||||
@@ -48,6 +52,13 @@
|
||||
|
||||
#define FB_VESA_NAME "FB_VESA_RM"
|
||||
|
||||
/**
|
||||
* @brief Initializes VBE framebuffer during bootup.
|
||||
*
|
||||
* utilizes switches to real mode interrupts and therefore must be
|
||||
* called during bootup before tick is set up and real-time
|
||||
* interrupt vectors utilized
|
||||
*/
|
||||
void vesa_realmode_bootup_init(void);
|
||||
|
||||
/* mutex for protection against multiple opens, when called frame_buffer_open */
|
||||
@@ -187,19 +198,37 @@ uint32_t VBE_read_EDID(uint16_t controller_unit_number,
|
||||
return (parret.reg_eax & 0xFFFF);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Basic graphic's mode parameters
|
||||
*/
|
||||
typedef struct {
|
||||
/** number of the graphic's mode */
|
||||
uint16_t mode_number;
|
||||
/** number of pixels in one line */
|
||||
uint16_t resX;
|
||||
/** number of lines */
|
||||
uint16_t resY;
|
||||
/** bits per pixel */
|
||||
uint8_t bpp;
|
||||
} Mode_params;
|
||||
|
||||
/* finds mode in 'modeList' of 'listLength' length according to resolution
|
||||
given in 'searchedResolution'. If bpp is given in that struct as well
|
||||
mode with such color depth and resolution is searched for. Otherwise bpp
|
||||
has to be zero. Mode number found is returned and also filled into
|
||||
'searchedResolution'. bpp is also filled into 'searchedResolution' if it
|
||||
was 0 before call. */
|
||||
/**
|
||||
* @brief Find mode by resolution in the given list of modes
|
||||
*
|
||||
* finds mode in \p mode_list of \p list_length length according to resolution
|
||||
* given in \p searched_resolution . If bpp is given in that struct as well
|
||||
* mode with such color depth and resolution is searched for. Otherwise bpp
|
||||
* has to be zero. Mode number found is returned and also filled into
|
||||
* \p searched_resolution . bpp is also filled into \p searchedResolution if it
|
||||
* was 0 before call.
|
||||
*
|
||||
* @param[in] mode_list list of modes to be searched
|
||||
* @param[in] list_length number of modes in the list
|
||||
* @param[in,out] searched_resolution element filled with searched resolution
|
||||
* or/and bpp; mode_number is filled in if appropriate mode found
|
||||
* @retval mode number satisfying given parameters
|
||||
* @retval -1 no suitable mode found
|
||||
*/
|
||||
static uint16_t find_mode_by_resolution(Mode_params *mode_list,
|
||||
uint8_t list_length,
|
||||
Mode_params *searched_resolution)
|
||||
@@ -223,14 +252,18 @@ static uint16_t find_mode_by_resolution(Mode_params *mode_list,
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Parse comandline option "--video=" if available.
|
||||
/**
|
||||
* @brief Find mode given within command line.
|
||||
*
|
||||
* Parse command line option "--video=" if available.
|
||||
* expected format
|
||||
* --video=<resX>x<resY>[-<bpp>]
|
||||
* numbers <resX>, <resY> and <bpp> are decadic
|
||||
*
|
||||
* @param[in] mode_list list of modes to be searched
|
||||
* @param[in] list_length number of modes in the list
|
||||
* @retval video mode number to be set
|
||||
* -1 on parsing error or when no suitable mode found
|
||||
* @retval -1 on parsing error or when no suitable mode found
|
||||
*/
|
||||
static uint16_t find_mode_using_cmdline(Mode_params *mode_list,
|
||||
uint8_t list_length)
|
||||
@@ -278,11 +311,13 @@ static uint16_t find_mode_using_cmdline(Mode_params *mode_list,
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* returns mode number best fitting to monitor attached
|
||||
/**
|
||||
* @brief Find mode number best fitting to monitor attached
|
||||
*
|
||||
* @param[in] mode_list list of modes to be searched
|
||||
* @param[in] list_length number of modes in the list
|
||||
* @retval video mode number to be set
|
||||
* -1 on parsing error or when no suitable mode found
|
||||
* @retval -1 on parsing error or when no suitable mode found
|
||||
*/
|
||||
static uint16_t find_mode_using_EDID( Mode_params *mode_list,
|
||||
uint8_t list_length)
|
||||
|
||||
@@ -4,16 +4,16 @@
|
||||
* @ingroup i386_pc386
|
||||
*
|
||||
* @brief VESA EDID definitions.
|
||||
*
|
||||
* This file contains definitions for constants related to
|
||||
* VESA Extended Display Identification Data.
|
||||
* More information can be found at
|
||||
* <http://www.vesa.org/vesa-standards/free-standards/>
|
||||
* VESA public standards may be found at
|
||||
* <http://www.vesa.org/wp-content/uploads/2010/12/thankspublic.htm>
|
||||
*/
|
||||
|
||||
/*
|
||||
* edid.h - This file contains definitions for constants related to
|
||||
* VESA Extended Display Identification Data.
|
||||
* More information can be found at
|
||||
* <http://www.vesa.org/vesa-standards/free-standards/>
|
||||
* VESA public standards may be found at
|
||||
* <http://www.vesa.org/wp-content/uploads/2010/12/thankspublic.htm>
|
||||
*
|
||||
* Copyright (C) 2014 Jan Doležal (dolezj21@fel.cvut.cz)
|
||||
* CTU in Prague.
|
||||
*
|
||||
|
||||
@@ -3,12 +3,10 @@
|
||||
*
|
||||
* @ingroup i386_pc386
|
||||
*
|
||||
* @brief Definitioins for vesa based framebuffer drivers.
|
||||
* @brief Headers specific for framebuffer drivers utilizing VESA VBE.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Headers specific for framebuffer drivers utilizing VESA VBE.
|
||||
*
|
||||
* Copyright (C) 2014 Jan Doležal (dolezj21@fel.cvut.cz)
|
||||
* CTU in Prague.
|
||||
*
|
||||
@@ -35,15 +33,16 @@ extern "C" {
|
||||
/* ----- Prototypes ----- */
|
||||
|
||||
/**
|
||||
* Returns information about graphic's controller in the infoBlock structure.
|
||||
* @brief Returns information about graphic's controller in the \p info_block
|
||||
* structure.
|
||||
*
|
||||
* @param infoBlock pointer to the struct to be filled with
|
||||
controller information
|
||||
* @param queriedVBEVersion if >0x200 then video bios is asked to fill in
|
||||
* @param[out] info_block pointer to the struct to be filled with
|
||||
* controller information
|
||||
* @param[in] queried_VBE_Version if >0x200 then video bios is asked to fill in
|
||||
* parameters which appeared with second version
|
||||
* of VBE.
|
||||
* @retval register ax content as defined in VBE RETURN STATUS paragraph
|
||||
* -1 error calling graphical bios
|
||||
* @retval ax register content as defined in VBE RETURN STATUS paragraph
|
||||
* @retval -1 error calling graphical bios
|
||||
*/
|
||||
uint32_t VBE_controller_information (
|
||||
VBE_vbe_info_block *info_block,
|
||||
@@ -51,13 +50,14 @@ uint32_t VBE_controller_information (
|
||||
);
|
||||
|
||||
/**
|
||||
* Fills structure infoBlock with informations about selected mode in
|
||||
* modeNumber variable.
|
||||
* @brief Fills structure \p info_block with informations about selected mode in
|
||||
* \p mode_number variable.
|
||||
*
|
||||
* @param infoBlock pointer to the struct to be filled with mode information
|
||||
* @param modeNumber detailes of this mode to be filled
|
||||
* @retval register ax content as defined in VBE RETURN STATUS paragraph
|
||||
* -1 error calling graphical bios
|
||||
* @param[out] info_block pointer to the struct to be filled with
|
||||
* mode information
|
||||
* @param[in] mode_number detailes of this mode to be filled
|
||||
* @retval ax register content as defined in VBE RETURN STATUS paragraph
|
||||
* @retval -1 error calling graphical bios
|
||||
*/
|
||||
uint32_t VBE_mode_information (
|
||||
VBE_mode_info_block *info_block,
|
||||
@@ -65,13 +65,13 @@ uint32_t VBE_mode_information (
|
||||
);
|
||||
|
||||
/**
|
||||
* Sets graphics mode selected. If mode has refreshRateCtrl bit set, than the
|
||||
* infoBlock must be filled accordingly.
|
||||
* @brief Sets graphics mode selected. If mode has refreshRateCtrl bit set, than
|
||||
* the \p info_block must be filled accordingly.
|
||||
*
|
||||
* @param modeNumber number of mode to be set
|
||||
* @param infoBlock pointer to struct containing refresh rate control info
|
||||
* @retval register ax content as defined in VBE RETURN STATUS paragraph
|
||||
* -1 error calling graphical bios
|
||||
* @param[in] mode_number number of mode to be set
|
||||
* @param[in] info_block pointer to struct containing refresh rate control info
|
||||
* @retval ax register content as defined in VBE RETURN STATUS paragraph
|
||||
* @retval -1 error calling graphical bios
|
||||
*/
|
||||
uint32_t VBE_set_mode (
|
||||
uint16_t mode_number,
|
||||
@@ -79,27 +79,27 @@ uint32_t VBE_set_mode (
|
||||
);
|
||||
|
||||
/**
|
||||
* Get currently set mode number.
|
||||
* @brief Get currently set mode number.
|
||||
*
|
||||
* @param modeNumber variable to be filled with current mode number
|
||||
* @retval register ax content as defined in VBE RETURN STATUS paragraph
|
||||
* -1 error calling graphical bios
|
||||
* @param[out] mode_number variable to be filled with current mode number
|
||||
* @retval ax register content as defined in VBE RETURN STATUS paragraph
|
||||
* @retval -1 error calling graphical bios
|
||||
*/
|
||||
uint32_t VBE_current_mode (
|
||||
uint16_t *mode_number
|
||||
);
|
||||
|
||||
/**
|
||||
* Gets information about display data channel implemented in the
|
||||
* @brief Gets information about display data channel implemented in the
|
||||
* graphic's controller.
|
||||
*
|
||||
* @param controllerUnitNumber
|
||||
* @param secondsToTransferEDIDBlock approximate time to transfer one EDID block
|
||||
* rounded up to seconds
|
||||
* @param DDCLevelSupported after call contains DDC version supported and
|
||||
* @param[in] controller_unit_number
|
||||
* @param[out] seconds_to_transfer_EDID_block approximate time to transfer one
|
||||
* EDID block rounded up to seconds
|
||||
* @param[out] DDC_level_supported contains DDC version supported and
|
||||
* screen blanking state during transfer
|
||||
* @retval register ax content as defined in VBE RETURN STATUS paragraph
|
||||
* -1 error calling graphical bios
|
||||
* @retval ax register content as defined in VBE RETURN STATUS paragraph
|
||||
* @retval -1 error calling graphical bios
|
||||
*/
|
||||
uint32_t VBE_report_DDC_capabilities (
|
||||
uint16_t controller_unit_number,
|
||||
@@ -108,13 +108,14 @@ uint32_t VBE_report_DDC_capabilities (
|
||||
);
|
||||
|
||||
/**
|
||||
* Reads selected EDID block from display attached to controller's interface.
|
||||
* @brief Reads selected EDID block from display attached to controller's
|
||||
* interface.
|
||||
*
|
||||
* @param controllerUnitNumber
|
||||
* @param EDIDBlockNumber block no. to be read from the display
|
||||
* @param buffer place to store block fetched from the display
|
||||
* @retval register ax content as defined in VBE RETURN STATUS paragraph
|
||||
* -1 error calling graphical bios
|
||||
* @param[in] controller_unit_number
|
||||
* @param[in] EDID_block_number block no. to be read from the display
|
||||
* @param[out] buffer place to store block fetched from the display
|
||||
* @retval ax register content as defined in VBE RETURN STATUS paragraph
|
||||
* @retval -1 error calling graphical bios
|
||||
*/
|
||||
uint32_t VBE_read_EDID (
|
||||
uint16_t controller_unit_number,
|
||||
|
||||
@@ -7,7 +7,6 @@
|
||||
*/
|
||||
|
||||
/*
|
||||
* Definitions related to the PC386 BSP.
|
||||
* This header file is also used in assembler modules.
|
||||
*
|
||||
* Copyright (C) 2014 Jan Doležal (dolezj21@fel.cvut.cz)
|
||||
|
||||
@@ -4,15 +4,15 @@
|
||||
* @ingroup i386_pc386
|
||||
*
|
||||
* @brief VESA Bios Extension definitions.
|
||||
*
|
||||
* This file contains definitions for constants related to VBE.
|
||||
* More information can be found at
|
||||
* <http://www.vesa.org/vesa-standards/free-standards/>.
|
||||
* VESA public standards may be found at
|
||||
* <http://www.vesa.org/wp-content/uploads/2010/12/thankspublic.htm>.
|
||||
*/
|
||||
|
||||
/*
|
||||
* vbe3.h - This file contains definitions for constants related to VBE.
|
||||
* More information can be found at
|
||||
* <http://www.vesa.org/vesa-standards/free-standards/>
|
||||
* VESA public standards may be found at
|
||||
* <http://www.vesa.org/wp-content/uploads/2010/12/thankspublic.htm>
|
||||
*
|
||||
* Copyright (C) 2014 Jan Doležal (dolezj21@fel.cvut.cz)
|
||||
* CTU in Prague.
|
||||
*
|
||||
@@ -37,343 +37,484 @@ extern "C" {
|
||||
/* VESA BIOS EXTENSION (VBE) Core functions Standard
|
||||
Version: 3.0 Date: September 16, 1998 */
|
||||
|
||||
/* VBE RETURN STATUS */
|
||||
/* AL == 4Fh: Function is supported */
|
||||
/* AL != 4Fh: Function is not supported */
|
||||
/** AL == 4Fh: Function is supported \n
|
||||
* AL != 4Fh: Function is not supported */
|
||||
#define VBE_functionSupported 0x4F
|
||||
/* AH == 00h: Function call successful */
|
||||
/** AH == 00h: Function call successful */
|
||||
#define VBE_callSuccessful 0x00
|
||||
/* AH == 01h: Function call failed */
|
||||
/** AH == 01h: Function call failed */
|
||||
#define VBE_callFailed 0x01
|
||||
/* AH == 02h: Function is not supported in the current hardware configuration */
|
||||
/** AH == 02h: Function is not supported in the current hardware configuration*/
|
||||
#define VBE_notSupportedInCurHWConf 0x02
|
||||
/* AH == 03h: Function call invalid in current video mode */
|
||||
/** AH == 03h: Function call invalid in current video mode */
|
||||
#define VBE_callInvalid 0x03
|
||||
|
||||
/* VBE Mode Numbers */
|
||||
/* D0-D8 = Mode number */
|
||||
/** D0-D8 = Mode number */
|
||||
#define VBE_modeNumberMask 0x01FF
|
||||
#define VBE_modeNumberShift 0x00
|
||||
/* If D8 == 0, this is not a VESA defined VBE mode */
|
||||
/** If D8 == 0, this is not a VESA defined VBE mode \n
|
||||
If D8 == 1, this is a VESA defined VBE mode */
|
||||
#define VBE_VESAmodeMask 0x0100
|
||||
/* If D8 == 1, this is a VESA defined VBE mode */
|
||||
/* D9-D12 = Reserved by VESA for future expansion (= 0) */
|
||||
#define VBE_VESAmodeShift 0x08
|
||||
/* If D11 == 0, Use current BIOS default refresh rate */
|
||||
/* D9-D10 = Reserved by VESA for future expansion (= 0) */
|
||||
/** If D11 == 0, Use current BIOS default refresh rate \n
|
||||
If D11 == 1, Use user specified CRTC values for refresh rate */
|
||||
#define VBE_refreshRateCtrlMask 0x0800
|
||||
/* If D11 == 1, Use user specified CRTC values for refresh rate */
|
||||
/* D12-13 = Reserved for VBE/AF (must be 0) */
|
||||
#define VBE_refreshRateCtrlShift 0x0B
|
||||
/* If D14 == 0, Use Banked/Windowed Frame Buffer */
|
||||
/* D12-13 = Reserved for VBE/AF (must be 0) */
|
||||
/** If D14 == 0, Use Banked/Windowed Frame Buffer \n
|
||||
If D14 == 1, Use Linear/Flat Frame Buffer */
|
||||
#define VBE_linearFlatFrameBufMask 0x4000
|
||||
/* If D14 == 1, Use Linear/Flat Frame Buffer */
|
||||
#define VBE_linearFlatFrameBufShift 0x0E
|
||||
/* If D15 == 0, Clear display memory */
|
||||
/** If D15 == 0, Clear display memory \n
|
||||
If D15 == 1, Preserve display memory */
|
||||
#define VBE_preserveDispMemMask 0x8000
|
||||
/* If D15 == 1, Preserve display memory */
|
||||
#define VBE_preserveDispMemShift 0x0F
|
||||
|
||||
/* Graphics modes */
|
||||
/* 15-bit mode, Resolution: 640x400, Colors: 256 */
|
||||
/** 15-bit mode, Resolution: 640x400, Colors: 256 */
|
||||
#define VBE_R640x400C256 0x100
|
||||
/* 15-bit mode, Resolution: 640x480, Colors: 256 */
|
||||
/** 15-bit mode, Resolution: 640x480, Colors: 256 */
|
||||
#define VBE_R640x480C256 0x101
|
||||
/* 15-bit mode, Resolution: 800x600, Colors: 16 */
|
||||
/** 15-bit mode, Resolution: 800x600, Colors: 16 */
|
||||
#define VBE_R800x600C16 0x102
|
||||
/* 7-bit mode, Resolution: 800x600, Colors: 16 */
|
||||
/** 7-bit mode, Resolution: 800x600, Colors: 16 */
|
||||
#define VBE_b7R800x600C16 0x6A
|
||||
/* 15-bit mode, Resolution: 800x600, Colors: 256 */
|
||||
/** 15-bit mode, Resolution: 800x600, Colors: 256 */
|
||||
#define VBE_R800x600C256 0x103
|
||||
/* 15-bit mode, Resolution: 1024x768, Colors: 16 */
|
||||
/** 15-bit mode, Resolution: 1024x768, Colors: 16 */
|
||||
#define VBE_R1024x768C16 0x104
|
||||
/* 15-bit mode, Resolution: 1024x768, Colors: 256 */
|
||||
/** 15-bit mode, Resolution: 1024x768, Colors: 256 */
|
||||
#define VBE_R1024x768C256 0x105
|
||||
/* 15-bit mode, Resolution: 1280x1024, Colors: 16 */
|
||||
/** 15-bit mode, Resolution: 1280x1024, Colors: 16 */
|
||||
#define VBE_R1280x1024C16 0x106
|
||||
/* 15-bit mode, Resolution: 1280x1024, Colors: 256 */
|
||||
/** 15-bit mode, Resolution: 1280x1024, Colors: 256 */
|
||||
#define VBE_R1280x1024C256 0x107
|
||||
/* 15-bit mode, Resolution: 320x200, Colors: 32K (1:5:5:5) */
|
||||
/** 15-bit mode, Resolution: 320x200, Colors: 32K (1:5:5:5) */
|
||||
#define VBE_R320x200C32K 0x10D
|
||||
/* 15-bit mode, Resolution: 320x200, Colors: 64K (5:6:5) */
|
||||
/** 15-bit mode, Resolution: 320x200, Colors: 64K (5:6:5) */
|
||||
#define VBE_R320x200C64K 0x10E
|
||||
/* 15-bit mode, Resolution: 320x200, Colors: 16.8M (8:8:8) */
|
||||
/** 15-bit mode, Resolution: 320x200, Colors: 16.8M (8:8:8) */
|
||||
#define VBE_R320x200C17M 0x10F
|
||||
/* 15-bit mode, Resolution: 640x480, Colors: 32K (1:5:5:5) */
|
||||
/** 15-bit mode, Resolution: 640x480, Colors: 32K (1:5:5:5) */
|
||||
#define VBE_R640x480C32K 0x110
|
||||
/* 15-bit mode, Resolution: 640x480, Colors: 64K (5:6:5) */
|
||||
/** 15-bit mode, Resolution: 640x480, Colors: 64K (5:6:5) */
|
||||
#define VBE_R640x480C64K 0x111
|
||||
/* 15-bit mode, Resolution: 640x480, Colors: 16.8M (8:8:8) */
|
||||
/** 15-bit mode, Resolution: 640x480, Colors: 16.8M (8:8:8) */
|
||||
#define VBE_R640x480C17M 0x112
|
||||
/* 15-bit mode, Resolution: 800x600, Colors: 32K (1:5:5:5) */
|
||||
/** 15-bit mode, Resolution: 800x600, Colors: 32K (1:5:5:5) */
|
||||
#define VBE_R800x600C32K 0x113
|
||||
/* 15-bit mode, Resolution: 800x600, Colors: 64K (5:6:5) */
|
||||
/** 15-bit mode, Resolution: 800x600, Colors: 64K (5:6:5) */
|
||||
#define VBE_R800x600C64K 0x114
|
||||
/* 15-bit mode, Resolution: 800x600, Colors: 16.8M (8:8:8) */
|
||||
/** 15-bit mode, Resolution: 800x600, Colors: 16.8M (8:8:8) */
|
||||
#define VBE_R800x600C17M 0x115
|
||||
/* 15-bit mode, Resolution: 1024x768, Colors: 32K (1:5:5:5) */
|
||||
/** 15-bit mode, Resolution: 1024x768, Colors: 32K (1:5:5:5) */
|
||||
#define VBE_R1024x768C32K 0x116
|
||||
/* 15-bit mode, Resolution: 1024x768, Colors: 64K (5:6:5) */
|
||||
/** 15-bit mode, Resolution: 1024x768, Colors: 64K (5:6:5) */
|
||||
#define VBE_R1024x768C64K 0x117
|
||||
/* 15-bit mode, Resolution: 1024x768, Colors: 16.8M (8:8:8) */
|
||||
/** 15-bit mode, Resolution: 1024x768, Colors: 16.8M (8:8:8) */
|
||||
#define VBE_R1024x768C17M 0x118
|
||||
/* 15-bit mode, Resolution: 1280x1024, Colors: 32K (1:5:5:5) */
|
||||
/** 15-bit mode, Resolution: 1280x1024, Colors: 32K (1:5:5:5) */
|
||||
#define VBE_R1280x1024C32K 0x119
|
||||
/* 15-bit mode, Resolution: 1280x1024, Colors: 64K (5:6:5) */
|
||||
/** 15-bit mode, Resolution: 1280x1024, Colors: 64K (5:6:5) */
|
||||
#define VBE_R1280x1024C64K 0x11A
|
||||
/* 15-bit mode, Resolution: 1280x1024, Colors: 16.8M (8:8:8) */
|
||||
/** 15-bit mode, Resolution: 1280x1024, Colors: 16.8M (8:8:8) */
|
||||
#define VBE_R1280x1024C17M 0x11B
|
||||
#define VBE_SpecialMode 0x81FF
|
||||
|
||||
/* Text modes */
|
||||
#define VBE_C80R60 0x108 /* 15-bit mode, Columns: 80, Rows: 60 */
|
||||
#define VBE_C132R25 0x109 /* 15-bit mode, Columns: 132, Rows: 25 */
|
||||
#define VBE_C132R43 0x10A /* 15-bit mode, Columns: 132, Rows: 43 */
|
||||
#define VBE_C132R50 0x10B /* 15-bit mode, Columns: 132, Rows: 50 */
|
||||
#define VBE_C132R60 0x10C /* 15-bit mode, Columns: 132, Rows: 60 */
|
||||
#define VBE_C80R60 0x108 /**< 15-bit mode, Columns: 80, Rows: 60 */
|
||||
#define VBE_C132R25 0x109 /**< 15-bit mode, Columns: 132, Rows: 25 */
|
||||
#define VBE_C132R43 0x10A /**< 15-bit mode, Columns: 132, Rows: 43 */
|
||||
#define VBE_C132R50 0x10B /**< 15-bit mode, Columns: 132, Rows: 50 */
|
||||
#define VBE_C132R60 0x10C /**< 15-bit mode, Columns: 132, Rows: 60 */
|
||||
|
||||
/* VBE function numbers - passed in AX register */
|
||||
#define VBE_RetVBEConInf 0x4F00 /* Return VBE Controller Information */
|
||||
#define VBE_RetVBEModInf 0x4F01 /* Return VBE Mode Information */
|
||||
#define VBE_SetVBEMod 0x4F02 /* Set VBE Mode */
|
||||
#define VBE_RetCurVBEMod 0x4F03 /* Return Current VBE Mode */
|
||||
#define VBE_SavResSta 0x4F04 /* Save/Restore State */
|
||||
#define VBE_DisWinCon 0x4F05 /* Display Window Control */
|
||||
#define VBE_SetGetLogScaLinLen 0x4F06 /* Set/Get Logical Scan Line Length */
|
||||
#define VBE_SetGetDisSta 0x4F07 /* Set/Get Display Start */
|
||||
#define VBE_SetGetDACPalFor 0x4F08 /* Set/Get DAC Palette Format */
|
||||
#define VBE_SetGetPalDat 0x4F09 /* Set/Get Palette Data */
|
||||
#define VBE_RetVBEProModInt 0x4F0A /* Return VBE Protected Mode Interface */
|
||||
#define VBE_GetSetpixclo 0x4F0B /* Get/Set pixel clock */
|
||||
#define VBE_PowManExt 0x4F10 /* Power Management Extensions (PM) */
|
||||
#define VBE_FlaPanIntExt 0x4F11 /* Flat Panel Interface Extensions (FP) */
|
||||
#define VBE_AudIntExt 0x4F13 /* Audio Interface Extensions (AI) */
|
||||
#define VBE_OEMExt 0x4F14 /* OEM Extensions */
|
||||
#define VBE_DisDatCha 0x4F15 /* Display Data Channel (DDC),
|
||||
Serial Control Interface (SCI) */
|
||||
/** VBE function - Return VBE Controller Information */
|
||||
#define VBE_RetVBEConInf 0x4F00
|
||||
/** VBE function - Return VBE Mode Information */
|
||||
#define VBE_RetVBEModInf 0x4F01
|
||||
/** VBE function - Set VBE Mode */
|
||||
#define VBE_SetVBEMod 0x4F02
|
||||
/** VBE function - Return Current VBE Mode */
|
||||
#define VBE_RetCurVBEMod 0x4F03
|
||||
/** VBE function - Save/Restore State */
|
||||
#define VBE_SavResSta 0x4F04
|
||||
/** VBE function - Display Window Control */
|
||||
#define VBE_DisWinCon 0x4F05
|
||||
/** VBE function - Set/Get Logical Scan Line Length */
|
||||
#define VBE_SetGetLogScaLinLen 0x4F06
|
||||
/** VBE function - Set/Get Display Start */
|
||||
#define VBE_SetGetDisSta 0x4F07
|
||||
/** VBE function - Set/Get DAC Palette Format */
|
||||
#define VBE_SetGetDACPalFor 0x4F08
|
||||
/** VBE function - Set/Get Palette Data */
|
||||
#define VBE_SetGetPalDat 0x4F09
|
||||
/** VBE function - Return VBE Protected Mode Interface */
|
||||
#define VBE_RetVBEProModInt 0x4F0A
|
||||
/** VBE function - Get/Set pixel clock */
|
||||
#define VBE_GetSetpixclo 0x4F0B
|
||||
/** VBE function - Power Management Extensions (PM) */
|
||||
#define VBE_PowManExt 0x4F10
|
||||
/** VBE function - Flat Panel Interface Extensions (FP) */
|
||||
#define VBE_FlaPanIntExt 0x4F11
|
||||
/** VBE function - Audio Interface Extensions (AI) */
|
||||
#define VBE_AudIntExt 0x4F13
|
||||
/** VBE function - OEM Extensions */
|
||||
#define VBE_OEMExt 0x4F14
|
||||
/** VBE function - Display Data Channel (DDC), Serial Control Interface (SCI) */
|
||||
#define VBE_DisDatCha 0x4F15
|
||||
|
||||
/* VBE subfunction numbers - passed in BL register */
|
||||
#define VBE_RetVBESupSpeInf 0x00 /* Return VBE Supplemental
|
||||
Specification Information */
|
||||
#define VBE_RetVBESupSpeInf 0x00 /**< Return VBE Supplemental
|
||||
* Specification Information */
|
||||
/* *** Structures *** */
|
||||
/**
|
||||
* @brief Far pointer as defined by VBE standard.
|
||||
*/
|
||||
typedef struct {
|
||||
/** @brief Offset to segment described by \a selector. */
|
||||
uint16_t offset;
|
||||
/** @brief Selector or Segment depending on whether this is used from 16bit
|
||||
protected mode or from real mode. */
|
||||
uint16_t selector;
|
||||
} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_far_pointer;
|
||||
|
||||
/**
|
||||
* @brief Protected mode info block as defined by VBE standard.
|
||||
*/
|
||||
typedef struct {
|
||||
uint8_t Signature[4]; /* PM Info Block Signature */
|
||||
uint16_t EntryPoint; /* Offset of PM entry point within BIOS */
|
||||
uint16_t PMInitialize; /* Offset of PM initialization entry point */
|
||||
uint16_t BIOSDataSel; /* Selector to BIOS data area emulation block */
|
||||
uint16_t A0000Sel; /* Selector to access A0000h physical mem */
|
||||
uint16_t B0000Sel; /* Selector to access B0000h physical mem */
|
||||
uint16_t B8000Sel; /* Selector to access B8000h physical mem */
|
||||
uint16_t CodeSegSel; /* Selector to access code segment as data */
|
||||
uint8_t InProtectMode; /* Set to 1 when in protected mode */
|
||||
uint8_t Checksum; /* Checksum byte for structure */
|
||||
/** PM Info Block Signature */
|
||||
uint8_t Signature[4];
|
||||
/** Offset of PM entry point within BIOS */
|
||||
uint16_t EntryPoint;
|
||||
/** Offset of PM initialization entry point */
|
||||
uint16_t PMInitialize;
|
||||
/** Selector to BIOS data area emulation block */
|
||||
uint16_t BIOSDataSel;
|
||||
/** Selector to access A0000h physical memmory */
|
||||
uint16_t A0000Sel;
|
||||
/** Selector to access B0000h physical memmory */
|
||||
uint16_t B0000Sel;
|
||||
/** Selector to access B8000h physical memmory */
|
||||
uint16_t B8000Sel;
|
||||
/** Selector to access code segment as data */
|
||||
uint16_t CodeSegSel;
|
||||
/** Set to 1 when in protected mode */
|
||||
uint8_t InProtectMode;
|
||||
/** Checksum byte for structure. Sum over all structure bytes gives 0. */
|
||||
uint8_t Checksum;
|
||||
} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_protected_mode_info_block;
|
||||
|
||||
/* General VBE signature */
|
||||
/** General VBE signature */
|
||||
#define VBE_SIGNATURE "VESA"
|
||||
/* Signature for VBE 2.0 and higher */
|
||||
/** Signature for VBE 2.0 and higher */
|
||||
#define VBE20plus_SIGNATURE "VBE2"
|
||||
/* for STUB see VBE CORE FUNCTIONS VERSION 3.0 - Appendix 1 */
|
||||
#define VBE_END_OF_VideoModeList 0xFFFF
|
||||
/** for STUB see VBE CORE FUNCTIONS VERSION 3.0 - Appendix 1 */
|
||||
#define VBE_STUB_VideoModeList 0xFFFF
|
||||
#define VBE_END_OF_VideoModeList 0xFFFF
|
||||
/**
|
||||
* @brief Information about VBE implementation.
|
||||
*/
|
||||
typedef struct {
|
||||
uint8_t VbeSignature[4]; /* VBE Signature */
|
||||
uint16_t VbeVersion; /* VBE Version */
|
||||
uint8_t *OemStringPtr; /* VbeFarPtr to OEM String */
|
||||
uint8_t Capabilities[4]; /* Capabilities of graphics controller */
|
||||
uint32_t *VideoModePtr; /* VbeFarPtr to VideoModeList */
|
||||
uint16_t TotalMemory; /* Number of 64kb memory blocks */
|
||||
/** VBE Signature */
|
||||
uint8_t VbeSignature[4];
|
||||
/** VBE Version */
|
||||
uint16_t VbeVersion;
|
||||
/** VBE_far_pointer to OEM String */
|
||||
uint8_t *OemStringPtr;
|
||||
/** Capabilities of graphics controller */
|
||||
uint8_t Capabilities[4];
|
||||
/** VBE_far_pointer to VideoModeList */
|
||||
uint32_t *VideoModePtr;
|
||||
/** Number of 64kb memory blocks */
|
||||
uint16_t TotalMemory;
|
||||
/* Added for VBE 2.0+ */
|
||||
uint16_t OemSoftwareRev; /* VBE implementation Software revision */
|
||||
uint8_t *OemVendorNamePtr; /* VbeFarPtr to Vendor Name String */
|
||||
uint8_t *OemProductNamePtr; /* VbeFarPtr to Product Name String */
|
||||
uint8_t *OemProductRevPtr; /* VbeFarPtr to Product Revision String */
|
||||
uint8_t Reserved[222]; /* Reserved for VBE implementation scratch */
|
||||
/* area */
|
||||
uint8_t OemData[256]; /* Data Area for OEM Strings */
|
||||
/** VBE implementation Software revision */
|
||||
uint16_t OemSoftwareRev;
|
||||
/** VBE_far_pointer to Vendor Name String */
|
||||
uint8_t *OemVendorNamePtr;
|
||||
/** VBE_far_pointer to Product Name String */
|
||||
uint8_t *OemProductNamePtr;
|
||||
/** VBE_far_pointer to Product Revision String */
|
||||
uint8_t *OemProductRevPtr;
|
||||
/** Reserved for VBE implementation scratch */
|
||||
uint8_t Reserved[222];
|
||||
/** Data Area for OEM Strings */
|
||||
uint8_t OemData[256];
|
||||
} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_vbe_info_block;
|
||||
|
||||
/**
|
||||
* @brief Describes graphic's mode parameter.
|
||||
*/
|
||||
typedef struct {
|
||||
/* Mandatory information for all VBE revisions */
|
||||
uint16_t ModeAttributes; /* mode attributes */
|
||||
uint8_t WinAAttributes; /* window A attributes */
|
||||
uint8_t WinBAttributes; /* window B attributes */
|
||||
uint16_t WinGranularity; /* window granularity */
|
||||
uint16_t WinSize; /* window size */
|
||||
uint16_t WinASegment; /* window A start segment */
|
||||
uint16_t WinBSegment; /* window B start segment */
|
||||
uint32_t *WinFuncPtr; /* real mode pointer to window function */
|
||||
uint16_t BytesPerScanLine; /* bytes per scan line */
|
||||
/** mode attributes */
|
||||
uint16_t ModeAttributes;
|
||||
/** window A attributes */
|
||||
uint8_t WinAAttributes;
|
||||
/** window B attributes */
|
||||
uint8_t WinBAttributes;
|
||||
/** window granularity */
|
||||
uint16_t WinGranularity;
|
||||
/** window size */
|
||||
uint16_t WinSize;
|
||||
/** window A start segment */
|
||||
uint16_t WinASegment;
|
||||
/** window B start segment */
|
||||
uint16_t WinBSegment;
|
||||
/** real mode pointer to window function */
|
||||
uint32_t *WinFuncPtr;
|
||||
/** bytes per scan line */
|
||||
uint16_t BytesPerScanLine;
|
||||
/* Mandatory information for VBE 1.2 and above */
|
||||
uint16_t XResolution; /* horizontal resolution in px or chars */
|
||||
uint16_t YResolution; /* vertical resolution in px or chars */
|
||||
uint8_t XCharSize; /* character cell width in pixels */
|
||||
uint8_t YCharSize; /* character cell height in pixels */
|
||||
uint8_t NumberOfPlanes; /* number of memory planes */
|
||||
uint8_t BitsPerPixel; /* bits per pixel */
|
||||
uint8_t NumberOfBanks; /* number of banks */
|
||||
uint8_t MemoryModel; /* memory model type */
|
||||
uint8_t BankSize; /* bank size in KB */
|
||||
uint8_t NumberOfImagePages; /* number of images */
|
||||
uint8_t Reserved0; /* reserved for page function */
|
||||
/** horizontal resolution in px or chars */
|
||||
uint16_t XResolution;
|
||||
/** vertical resolution in px or chars */
|
||||
uint16_t YResolution;
|
||||
/** character cell width in pixels */
|
||||
uint8_t XCharSize;
|
||||
/** character cell height in pixels */
|
||||
uint8_t YCharSize;
|
||||
/** number of memory planes */
|
||||
uint8_t NumberOfPlanes;
|
||||
/** bits per pixel */
|
||||
uint8_t BitsPerPixel;
|
||||
/** number of banks */
|
||||
uint8_t NumberOfBanks;
|
||||
/** memory model type */
|
||||
uint8_t MemoryModel;
|
||||
/** bank size in KB */
|
||||
uint8_t BankSize;
|
||||
/** number of images */
|
||||
uint8_t NumberOfImagePages;
|
||||
/** reserved for page function */
|
||||
uint8_t Reserved0;
|
||||
/* Direct Color fields (required for direct/6 and YUV/7 memory models) */
|
||||
uint8_t RedMaskSize; /* size of direct color red mask in bits */
|
||||
uint8_t RedFieldPosition; /* bit position of lsb of red mask */
|
||||
uint8_t GreenMaskSize; /* size of direct color green mask in b */
|
||||
uint8_t GreenFieldPosition; /* bit position of lsb of green mask */
|
||||
uint8_t BlueMaskSize; /* size of direct color blue mask in b */
|
||||
uint8_t BlueFieldPosition; /* bit position of lsb of blue mask */
|
||||
uint8_t RsvdMaskSize; /* size of direct color reserved mask */
|
||||
uint8_t RsvdFieldPosition; /* bit position of lsb of reserved mask */
|
||||
uint8_t DirectColorModeInfo; /* direct color mode attributes */
|
||||
/** size of direct color red mask in bits */
|
||||
uint8_t RedMaskSize;
|
||||
/** bit position of lsb of red mask */
|
||||
uint8_t RedFieldPosition;
|
||||
/** size of direct color green mask in b */
|
||||
uint8_t GreenMaskSize;
|
||||
/** bit position of lsb of green mask */
|
||||
uint8_t GreenFieldPosition;
|
||||
/** size of direct color blue mask in b */
|
||||
uint8_t BlueMaskSize;
|
||||
/** bit position of lsb of blue mask */
|
||||
uint8_t BlueFieldPosition;
|
||||
/** size of direct color reserved mask */
|
||||
uint8_t RsvdMaskSize;
|
||||
/** bit position of lsb of reserved mask */
|
||||
uint8_t RsvdFieldPosition;
|
||||
/** direct color mode attributes */
|
||||
uint8_t DirectColorModeInfo;
|
||||
/* Mandatory information for VBE 2.0 and above */
|
||||
uint32_t *PhysBasePtr; /* physical address for
|
||||
flat memory frame buffer */
|
||||
uint32_t Reserved1; /* Reserved - always set to 0 */
|
||||
uint16_t Reserved2; /* Reserved - always set to 0 */
|
||||
/** physical address for flat memory frame buffer */
|
||||
uint32_t *PhysBasePtr;
|
||||
/** Reserved - always set to 0 */
|
||||
uint32_t Reserved1;
|
||||
/** Reserved - always set to 0 */
|
||||
uint16_t Reserved2;
|
||||
/* Mandatory information for VBE 3.0 and above */
|
||||
uint16_t LinBytesPerScanLine; /* bytes per scan line for linear modes */
|
||||
uint8_t BnkNumberOfImagePages; /* number of images for banked modes */
|
||||
uint8_t LinNumberOfImagePages; /* number of images for linear modes */
|
||||
/** bytes per scan line for linear modes */
|
||||
uint16_t LinBytesPerScanLine;
|
||||
/** number of images for banked modes */
|
||||
uint8_t BnkNumberOfImagePages;
|
||||
/** number of images for linear modes */
|
||||
uint8_t LinNumberOfImagePages;
|
||||
/* linear modes */
|
||||
uint8_t LinRedMaskSize; /* size of direct color red mask */
|
||||
uint8_t LinRedFieldPosition; /* bit position of lsb of red mask */
|
||||
uint8_t LinGreenMaskSize; /* size of direct color green mask */
|
||||
uint8_t LinGreenFieldPosition; /* bit position of lsb of green mask */
|
||||
uint8_t LinBlueMaskSize; /* size of direct color blue mask */
|
||||
uint8_t LinBlueFieldPosition; /* bit position of lsb of blue mask */
|
||||
uint8_t LinRsvdMaskSize; /* size of direct color reserved mask */
|
||||
uint8_t LinRsvdFieldPosition; /* bit position of lsb of reserved mask */
|
||||
uint32_t MaxPixelClock; /* maximum pixel clock
|
||||
(in Hz) for graphics mode */
|
||||
uint8_t Reserved3[189]; /* remainder of ModeInfoBlock */
|
||||
/** size of direct color red mask */
|
||||
uint8_t LinRedMaskSize;
|
||||
/** bit position of lsb of red mask */
|
||||
uint8_t LinRedFieldPosition;
|
||||
/** size of direct color green mask */
|
||||
uint8_t LinGreenMaskSize;
|
||||
/** bit position of lsb of green mask */
|
||||
uint8_t LinGreenFieldPosition;
|
||||
/** size of direct color blue mask */
|
||||
uint8_t LinBlueMaskSize;
|
||||
/** bit position of lsb of blue mask */
|
||||
uint8_t LinBlueFieldPosition;
|
||||
/** size of direct color reserved mask */
|
||||
uint8_t LinRsvdMaskSize;
|
||||
/** bit position of lsb of reserved mask */
|
||||
uint8_t LinRsvdFieldPosition;
|
||||
/** maximum pixel clock (in Hz) for graphics mode */
|
||||
uint32_t MaxPixelClock;
|
||||
/** remainder of VBE_mode_info_block */
|
||||
uint8_t Reserved3[189];
|
||||
} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_mode_info_block;
|
||||
|
||||
/**
|
||||
* @brief Describes monitor synchronization.
|
||||
*/
|
||||
typedef struct {
|
||||
uint16_t HorizontalTotal; /* Horizontal total in pixels */
|
||||
uint16_t HorizontalSyncStart; /* Horizontal sync start in pixels */
|
||||
uint16_t HorizontalSyncEnd; /* Horizontal sync end in pixels */
|
||||
uint16_t VerticalTotal; /* Vertical total in lines */
|
||||
uint16_t VerticalSyncStart; /* Vertical sync start in lines */
|
||||
uint16_t VerticalSyncEnd; /* Vertical sync end in lines */
|
||||
uint8_t Flags; /* Flags (Interlaced, Double Scan etc) */
|
||||
uint32_t PixelClock; /* Pixel clock in units of Hz */
|
||||
uint16_t RefreshRate; /* Refresh rate in units of 0.01 Hz */
|
||||
uint8_t Reserved[40]; /* remainder of ModeInfoBlock */
|
||||
/** Horizontal total in pixels */
|
||||
uint16_t HorizontalTotal;
|
||||
/** Horizontal sync start in pixels */
|
||||
uint16_t HorizontalSyncStart;
|
||||
/** Horizontal sync end in pixels */
|
||||
uint16_t HorizontalSyncEnd;
|
||||
/** Vertical total in lines */
|
||||
uint16_t VerticalTotal;
|
||||
/** Vertical sync start in lines */
|
||||
uint16_t VerticalSyncStart;
|
||||
/** Vertical sync end in lines */
|
||||
uint16_t VerticalSyncEnd;
|
||||
/** Flags (Interlaced, Double Scan etc) */
|
||||
uint8_t Flags;
|
||||
/** Pixel clock in units of Hz */
|
||||
uint32_t PixelClock;
|
||||
/** Refresh rate in units of 0.01 Hz */
|
||||
uint16_t RefreshRate;
|
||||
/** remainder of VBE_mode_info_block */
|
||||
uint8_t Reserved[40];
|
||||
} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_CRTC_info_block;
|
||||
|
||||
/**
|
||||
* @brief Describes palette entry.
|
||||
*/
|
||||
typedef struct {
|
||||
uint8_t Blue; /* Blue channel value (6 or 8 bits) */
|
||||
uint8_t Green; /* Green channel value (6 or 8 bits) */
|
||||
uint8_t Red; /* Red channel value(6 or 8 bits) */
|
||||
uint8_t Alignment; /* DWORD alignment byte (unused) */
|
||||
/** Blue channel value (6 or 8 bits) */
|
||||
uint8_t Blue;
|
||||
/** Green channel value (6 or 8 bits) */
|
||||
uint8_t Green;
|
||||
/** Red channel value(6 or 8 bits) */
|
||||
uint8_t Red;
|
||||
/** DWORD alignment byte (unused) */
|
||||
uint8_t Alignment;
|
||||
} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_palette_entry;
|
||||
|
||||
/**
|
||||
* @brief Supplemental VBE info block.
|
||||
*/
|
||||
typedef struct {
|
||||
uint8_t SupVbeSignature[7]; /* Supplemental VBE Signature */
|
||||
uint16_t SupVbeVersion; /* Supplemental VBE Version */
|
||||
uint8_t SupVbeSubFunc[8]; /* Bitfield of supported subfunctions */
|
||||
uint16_t OemSoftwareRev; /* OEM Software revision */
|
||||
uint8_t *OemVendorNamePtr; /* VbeFarPtr to Vendor Name String */
|
||||
uint8_t *OemProductNamePtr; /* VbeFarPtr to Product Name String */
|
||||
uint8_t *OemProductRevPtr; /* VbeFarPtr to Product Revision String */
|
||||
uint8_t *OemStringPtr; /* VbeFarPtr to OEM String */
|
||||
uint8_t Reserved[221]; /* Reserved for description
|
||||
strings and future */
|
||||
/* expansion */
|
||||
/** Supplemental VBE Signature */
|
||||
uint8_t SupVbeSignature[7];
|
||||
/** Supplemental VBE Version */
|
||||
uint16_t SupVbeVersion;
|
||||
/** Bitfield of supported subfunctions */
|
||||
uint8_t SupVbeSubFunc[8];
|
||||
/** OEM Software revision */
|
||||
uint16_t OemSoftwareRev;
|
||||
/** VBE_far_pointer to Vendor Name String */
|
||||
uint8_t *OemVendorNamePtr;
|
||||
/** VBE_far_pointer to Product Name String */
|
||||
uint8_t *OemProductNamePtr;
|
||||
/** VBE_far_pointer to Product Revision String */
|
||||
uint8_t *OemProductRevPtr;
|
||||
/** VBE_far_pointer to OEM String */
|
||||
uint8_t *OemStringPtr;
|
||||
/** Reserved for description strings and future expansion */
|
||||
uint8_t Reserved[221];
|
||||
} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_supplemental_vbe_info_block;
|
||||
|
||||
/* VbeInfoBlock Capabilities */
|
||||
/* D0 = 0 DAC is fixed width, with 6 bits per primary color */
|
||||
/* = 1 DAC width is switchable to 8 bits per primary color */
|
||||
/* VBE_vbe_info_block Capabilities */
|
||||
/** VBE Info Block - Capabilities\n
|
||||
D0 = 0 DAC is fixed width, with 6 bits per primary color \n
|
||||
D0 = 1 DAC width is switchable to 8 bits per primary color */
|
||||
#define VBE_DACswitchableMask 0x0001
|
||||
/* D1 = 0 Controller is VGA compatible */
|
||||
/* = 1 Controller is not VGA compatible */
|
||||
/** VBE Info Block - Capabilities\n
|
||||
D1 = 0 Controller is VGA compatible \n
|
||||
D1 = 1 Controller is not VGA compatible */
|
||||
#define VBE_notVGAcompatibleMask 0x0002
|
||||
/* D2 = 0 Normal RAMDAC operation */
|
||||
/* = 1 When programming large blocks of information to the RAMDAC,
|
||||
/** VBE Info Block - Capabilities\n
|
||||
D2 = 0 Normal RAMDAC operation \n
|
||||
D2 = 1 When programming large blocks of information to the RAMDAC,
|
||||
use the blank bit in Function 09h. */
|
||||
#define VBE_specialRAMDACopMask 0x0004
|
||||
/* D3 = 0 No hardware stereoscopic signaling support */
|
||||
/* = 1 Hardware stereoscopic signaling supported by controller */
|
||||
/** VBE Info Block - Capabilities\n
|
||||
D3 = 0 No hardware stereoscopic signaling support \n
|
||||
D3 = 1 Hardware stereoscopic signaling supported by controller */
|
||||
#define VBE_hwStereoscopicMask 0x0008
|
||||
/* D4 = 0 Stereo signaling supported via external VESA stereo connector */
|
||||
/* = 1 Stereo signaling supported via VESA EVC connector */
|
||||
/** VBE Info Block - Capabilities\n
|
||||
D4 = 0 Stereo signaling supported via external VESA stereo connector \n
|
||||
D4 = 1 Stereo signaling supported via VESA EVC connector */
|
||||
#define VBE_supportEVCconnMask 0x0010
|
||||
/* D5-31 = Reserved */
|
||||
|
||||
/* ModeInfoBlock ModeAttributes */
|
||||
/* D0 = Mode supported by hardware configuration */
|
||||
/* 0 = Mode not supported in hardware */
|
||||
/* 1 = Mode supported in hardware */
|
||||
/* VBE_mode_info_block ModeAttributes */
|
||||
/** Mode Info Block - Mode Attributes\n
|
||||
D0 = Mode supported by hardware configuration.
|
||||
0 = Mode not supported in hardware\n
|
||||
1 = Mode supported in hardware */
|
||||
#define VBE_modSupInHWMask 0x0001
|
||||
/* D1 = 1 (Reserved) */
|
||||
/* D2 = TTY Output functions supported by BIOS */
|
||||
/* 0 = TTY Output functions not supported by BIOS */
|
||||
/* 1 = TTY Output functions supported by BIOS */
|
||||
/** Mode Info Block - Mode Attributes\n
|
||||
D2 = TTY Output functions supported by BIOS.
|
||||
0 = TTY Output functions not supported by BIOS\n
|
||||
1 = TTY Output functions supported by BIOS */
|
||||
#define VBE_TTYOutSupByBIOSMask 0x0004
|
||||
/* D3 = Monochrome/color mode (see note below) */
|
||||
/* 0 = Monochrome mode */
|
||||
/* 1 = Color mode */
|
||||
/** Mode Info Block - Mode Attributes\n
|
||||
D3 = Monochrome/color mode (see note below).
|
||||
0 = Monochrome mode\n
|
||||
1 = Color mode */
|
||||
#define VBE_ColorModeMask 0x0008
|
||||
/* D4 = Mode type */
|
||||
/* 0 = Text mode */
|
||||
/* 1 = Graphics mode */
|
||||
/** Mode Info Block - Mode Attributes\n
|
||||
D4 = Mode type.
|
||||
0 = Text mode\n
|
||||
1 = Graphics mode */
|
||||
#define VBE_GraphicsModeMask 0x0010
|
||||
/* D5 = VGA compatible mode */
|
||||
/* 0 = Yes */
|
||||
/* 1 = No */
|
||||
/** Mode Info Block - Mode Attributes\n
|
||||
D5 = VGA compatible mode.
|
||||
0 = Yes\n
|
||||
1 = No */
|
||||
#define VBE_VGACompModeMask 0x0020
|
||||
/* D6 = VGA compatible windowed memory mode is available */
|
||||
/* 0 = Yes */
|
||||
/* 1 = No */
|
||||
/** Mode Info Block - Mode Attributes\n
|
||||
D6 = VGA compatible windowed memory mode is available.
|
||||
0 = Yes\n
|
||||
1 = No */
|
||||
#define VBE_VGACompWinMemModeMask 0x0040
|
||||
/* D7 = Linear frame buffer mode is available */
|
||||
/* 0 = No */
|
||||
/* 1 = Yes */
|
||||
/** Mode Info Block - Mode Attributes\n
|
||||
D7 = Linear frame buffer mode is available.
|
||||
0 = No\n
|
||||
1 = Yes */
|
||||
#define VBE_LinFraBufModeAvaiMask 0x0080
|
||||
/* D8 = Double scan mode is available */
|
||||
/* 0 = No */
|
||||
/* 1 = Yes */
|
||||
/** Mode Info Block - Mode Attributes\n
|
||||
D8 = Double scan mode is available.
|
||||
0 = No\n
|
||||
1 = Yes */
|
||||
#define VBE_DblScnModeAvaiMask 0x0100
|
||||
/* D9 = Interlaced mode is available */
|
||||
/* 0 = No */
|
||||
/* 1 = Yes */
|
||||
/** Mode Info Block - Mode Attributes\n
|
||||
D9 = Interlaced mode is available.
|
||||
0 = No\n
|
||||
1 = Yes */
|
||||
#define VBE_InterlModeAvaiMask 0x0200
|
||||
/* D10 = Hardware triple buffering support */
|
||||
/* 0 = No */
|
||||
/* 1 = Yes */
|
||||
/** Mode Info Block - Mode Attributes\n
|
||||
D10 = Hardware triple buffering support.
|
||||
0 = No\n
|
||||
1 = Yes */
|
||||
#define VBE_HWTripBufSupMask 0x0400
|
||||
/* D11 = Hardware stereoscopic display support */
|
||||
/* 0 = No */
|
||||
/* 1 = Yes */
|
||||
/** Mode Info Block - Mode Attributes\n
|
||||
D11 = Hardware stereoscopic display support.
|
||||
0 = No\n
|
||||
1 = Yes */
|
||||
#define VBE_HWSterDispSupMask 0x0800
|
||||
/* D12 = Dual display start address support */
|
||||
/* 0 = No */
|
||||
/* 1 = Yes */
|
||||
/** Mode Info Block - Mode Attributes\n
|
||||
D12 = Dual display start address support.
|
||||
0 = No\n
|
||||
1 = Yes */
|
||||
#define VBE_DualDispStAdrSupMask 0x1000
|
||||
/* D13-D15 = Reserved */
|
||||
|
||||
/* ModeInfoBlock WinXAttributes */
|
||||
/* D0 = Relocatable window(s) supported */
|
||||
/* 0 = Single non-relocatable window only */
|
||||
/* 1 = Relocatable window(s) are supported */
|
||||
/* VBE_mode_info_block WinXAttributes */
|
||||
/** D0 = Relocatable window(s) supported.
|
||||
0 = Single non-relocatable window only\n
|
||||
1 = Relocatable window(s) are supported */
|
||||
#define VBE_RelocWinSupMask 0x01
|
||||
/* D1 = Window readable */
|
||||
/* 0 = Window is not readable */
|
||||
/* 1 = Window is readable */
|
||||
/** D1 = Window readable.
|
||||
0 = Window is not readable\n
|
||||
1 = Window is readable */
|
||||
#define VBE_WinReadableMask 0x02
|
||||
/* D2 = Window writeable */
|
||||
/* 0 = Window is not writeable */
|
||||
/* 1 = Window is writeable */
|
||||
/** D2 = Window writeable.
|
||||
0 = Window is not writeable\n
|
||||
1 = Window is writeable */
|
||||
#define VBE_WinWritableMask 0x04
|
||||
/* D3-D7 = Reserved */
|
||||
|
||||
/* ModeInfoBlock MemoryModel */
|
||||
/* VBE_mode_info_block MemoryModel */
|
||||
#define VBE_TextMode 0x00
|
||||
#define VBE_CGAGraphics 0x01
|
||||
#define VBE_HerculesGraphics 0x02
|
||||
@@ -385,32 +526,36 @@ typedef struct {
|
||||
/* 0x08-0x0F Reserved, to be defined by VESA */
|
||||
/* 0x10-0xFF To be defined by OEM */
|
||||
|
||||
/* ModeInfoBlock DirectColorModeInfo */
|
||||
/* D0 = Color ramp is fixed/programmable */
|
||||
/* 0 = Color ramp is fixed */
|
||||
/* 1 = Color ramp is programmable */
|
||||
/* VBE_mode_info_block DirectColorModeInfo */
|
||||
/** D0 = Color ramp is fixed/programmable.
|
||||
0 = Color ramp is fixed\n
|
||||
1 = Color ramp is programmable */
|
||||
#define VBE_ColRampProgMask 0x01
|
||||
/* D1 = Bits in Rsvd field are usable/reserved */
|
||||
/* 0 = Bits in Rsvd field are reserved */
|
||||
/* 1 = Bits in Rsvd field are usable by the application */
|
||||
/** D1 = Bits in Rsvd field are usable/reserved.
|
||||
0 = Bits in Rsvd field are reserved\n
|
||||
1 = Bits in Rsvd field are usable by the application */
|
||||
#define VBE_RsvdBitsUsableMask 0x02
|
||||
|
||||
/* CRTCInfoBlock Flags */
|
||||
/* D0 = Double Scan Mode Enable */
|
||||
/* 0 = Graphics mode is not double scanned */
|
||||
/* 1 = Graphics mode is double scanned */
|
||||
/* VBE_CRTC_info_block Flags */
|
||||
/** CRTC Info Block - Flags\n
|
||||
D0 = Double Scan Mode Enable.
|
||||
0 = Graphics mode is not double scanned\n
|
||||
1 = Graphics mode is double scanned */
|
||||
#define VBE_GrModeDblScanMask 0x01
|
||||
/* D1 = Interlaced Mode Enable */
|
||||
/* 0 = Graphics mode is non-interlaced */
|
||||
/* 1 = Graphics mode is interlaced */
|
||||
/** CRTC Info Block - Flags\n
|
||||
D1 = Interlaced Mode Enable.
|
||||
0 = Graphics mode is non-interlaced\n
|
||||
1 = Graphics mode is interlaced */
|
||||
#define VBE_GrModeInterlMask 0x02
|
||||
/* D2 = Horizontal sync polarity */
|
||||
/* 0 = Horizontal sync polarity is positive (+) */
|
||||
/* 1 = Horizontal sync polarity is negative (-) */
|
||||
/** CRTC Info Block - Flags\n
|
||||
D2 = Horizontal sync polarity.
|
||||
0 = Horizontal sync polarity is positive (+)\n
|
||||
1 = Horizontal sync polarity is negative (-) */
|
||||
#define VBE_HorSncPolNegMask 0x04
|
||||
/* D3 = Vertical sync polarity */
|
||||
/* 0 = Vertical sync polarity is positive (+) */
|
||||
/* 1 = Vertical sync polarity is negative (-) */
|
||||
/** CRTC Info Block - Flags\n
|
||||
D3 = Vertical sync polarity.
|
||||
0 = Vertical sync polarity is positive (+)\n
|
||||
1 = Vertical sync polarity is negative (-) */
|
||||
#define VBE_VerSncPolNegMask 0x08
|
||||
|
||||
|
||||
@@ -418,17 +563,19 @@ typedef struct {
|
||||
Version: 1.1 November 18, 1999 */
|
||||
|
||||
/* VBE/DDC subfunction numbers - passed in BL register */
|
||||
#define VBEDDC_Capabilities 0x0 /* Report VBE/DDC Capabilities */
|
||||
#define VBEDDC_ReadEDID 0x1 /* Read EDID */
|
||||
/** VBE/DDC subfunction - Report VBE/DDC Capabilities */
|
||||
#define VBEDDC_Capabilities 0x0
|
||||
/** VBE/DDC subfunction - Read EDID */
|
||||
#define VBEDDC_ReadEDID 0x1
|
||||
|
||||
/* DDC Capabilities */
|
||||
/* DDC level supported - returned in BL register */
|
||||
/* 0 - DDC1 not supported; 1 - DDC1 supported */
|
||||
/** 0 - DDC1 not supported; 1 - DDC1 supported */
|
||||
#define VBEDDC_1SupportedMask 0x1
|
||||
/* 0 - DDC2 not supported; 1 - DDC2 supported */
|
||||
/** 0 - DDC2 not supported; 1 - DDC2 supported */
|
||||
#define VBEDDC_2SupportedMask 0x2
|
||||
/* 0 - Screen not blanked during data transfer;
|
||||
1 - Screen blanked during data transfer */
|
||||
/** 0 - Screen not blanked during data transfer\n
|
||||
1 - Screen blanked during data transfer */
|
||||
#define VBEDDC_scrBlnkDatTrMs 0x4
|
||||
|
||||
|
||||
@@ -436,20 +583,31 @@ typedef struct {
|
||||
Version: 1.0 Revision: 2 Date: July 2, 1997 */
|
||||
|
||||
/* VBE/SCI subfunction numbers - passed in BL register */
|
||||
#define VBESCI_ReportCapabil 0x10 /* Report VBE/SCI Capabilities */
|
||||
#define VBESCI_BegSCLSDACtrl 0x11 /* Begin SCL/SDA control */
|
||||
#define VBESCI_EndSCLSDACtrl 0x12 /* End SCL/SDA control */
|
||||
#define VBESCI_WrtSCLClkLine 0x13 /* Write SCL clock line */
|
||||
#define VBESCI_WrtSDADatLine 0x14 /* Write SDA data line */
|
||||
#define VBESCI_RdySCLClkLine 0x15 /* Read SCL clock line */
|
||||
#define VBESCI_RdySDADatLine 0x16 /* Read SDA data line */
|
||||
/** VBE/SCI subfunction - Report VBE/SCI Capabilities */
|
||||
#define VBESCI_ReportCapabil 0x10
|
||||
/** VBE/SCI subfunction - Begin SCL/SDA control */
|
||||
#define VBESCI_BegSCLSDACtrl 0x11
|
||||
/** VBE/SCI subfunction - End SCL/SDA control */
|
||||
#define VBESCI_EndSCLSDACtrl 0x12
|
||||
/** VBE/SCI subfunction - Write SCL clock line */
|
||||
#define VBESCI_WrtSCLClkLine 0x13
|
||||
/** VBE/SCI subfunction - Write SDA data line */
|
||||
#define VBESCI_WrtSDADatLine 0x14
|
||||
/** VBE/SCI subfunction - Read SCL clock line */
|
||||
#define VBESCI_RdySCLClkLine 0x15
|
||||
/** VBE/SCI subfunction - Read SDA data line */
|
||||
#define VBESCI_RdySDADatLine 0x16
|
||||
|
||||
/* SCI Capabilities */
|
||||
/* I2C level supported - returned in BL register */
|
||||
#define VBESCI_capSCLwrtMask 0x1 /* Can write to SCL clock line */
|
||||
#define VBESCI_capSDAwrtMask 0x2 /* Can write to SDA data line */
|
||||
#define VBESCI_capSCLrdyMask 0x4 /* Can read from SCL clock line */
|
||||
#define VBESCI_capSDArdyMask 0x8 /* Can read from SDA data line */
|
||||
/** Can write to SCL clock line */
|
||||
#define VBESCI_capSCLwrtMask 0x1
|
||||
/** Can write to SDA data line */
|
||||
#define VBESCI_capSDAwrtMask 0x2
|
||||
/** Can read from SCL clock line */
|
||||
#define VBESCI_capSCLrdyMask 0x4
|
||||
/** Can read from SDA data line */
|
||||
#define VBESCI_capSDArdyMask 0x8
|
||||
|
||||
|
||||
#ifdef __cplusplus
|
||||
|
||||
@@ -1,20 +1,28 @@
|
||||
/**
|
||||
* @file realmode_int.c
|
||||
*
|
||||
* @ingroup i386_shared
|
||||
*
|
||||
* @brief Real mode interrupt call implementation
|
||||
*/
|
||||
|
||||
/*
|
||||
* Realmode interrupt call implementation.
|
||||
*
|
||||
*
|
||||
* Copyright (c) 2014 - CTU in Prague
|
||||
* Jan Doležal ( dolezj21@fel.cvut.cz )
|
||||
* Copyright (c) 2014 - CTU in Prague
|
||||
* Jan Doležal ( dolezj21@fel.cvut.cz )
|
||||
*
|
||||
* The license and distribution terms for this file may be
|
||||
* found in the file LICENSE in this distribution or at
|
||||
* http://www.rtems.org/license/LICENSE.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <bsp/realmode_int.h>
|
||||
#include <string.h>
|
||||
#include <rtems/score/cpu.h>
|
||||
|
||||
/*
|
||||
* offsets to \a i386_realmode_interrupt_registers declared in realmode_int.h
|
||||
* used in inline assmbler for better readability
|
||||
*/
|
||||
#define IR_EAX_OFF "0x00"
|
||||
#define IR_EBX_OFF "0x04"
|
||||
#define IR_ECX_OFF "0x08"
|
||||
@@ -26,25 +34,45 @@
|
||||
#define IR_FS_OFF "0x1C"
|
||||
#define IR_GS_OFF "0x1E"
|
||||
|
||||
/*
|
||||
* offsets to \a rm_int_regs_bkp_param
|
||||
*/
|
||||
#define BKP_ESP_OFF "0x20"
|
||||
#define BKP_SS_OFF "0x24"
|
||||
#define BKP_DS_OFF "0x26"
|
||||
#define RM_ENTRY "0x28"
|
||||
#define PM_ENTRY "0x2C"
|
||||
|
||||
/* parameters, results, backup values accessible in real mode */
|
||||
/**
|
||||
* @brief parameters, results, backup values accessible in real mode
|
||||
*
|
||||
* @note Struct members not necessarily used in C. This serves also as
|
||||
* layout of memory and it is used within inline assembler.
|
||||
*/
|
||||
typedef struct {
|
||||
i386_realmode_interrupt_registers inoutregs;
|
||||
/** spot for back up of protected mode stack pointer */
|
||||
uint32_t pm_esp_bkp;
|
||||
/** spot for back up of protected mode stack selector */
|
||||
uint16_t pm_ss_bkp;
|
||||
/** spot for back up of protected mode data selector */
|
||||
uint16_t ds_bkp;
|
||||
/** spot for setting up long indirect jump offset
|
||||
to real mode from 16bit protected mode */
|
||||
uint16_t rm_entry;
|
||||
/** spot for setting up long indirect jump segment
|
||||
to real mode from 16bit protected mode */
|
||||
uint16_t rm_code_segment;
|
||||
/** returning offset for long indirect jump back
|
||||
to 32bit protected mode */
|
||||
uint32_t pm_entry;
|
||||
/** returning selector for long indirect jump back
|
||||
to 32bit protected mode */
|
||||
uint16_t pm_code_selector;
|
||||
/* if modifying update offset definitions as well */
|
||||
/* if this struct is to be modified update offset definitions as well */
|
||||
} RTEMS_COMPILER_PACKED_ATTRIBUTE rm_int_regs_bkp_param;
|
||||
|
||||
/* offsets to \a pm_bkp_and_param */
|
||||
#define BKP_IDTR_LIM "0x00"
|
||||
#define BKP_IDTR_BASE "0x02"
|
||||
#define BKP_ES_OFF "0x06"
|
||||
@@ -55,18 +83,35 @@ typedef struct {
|
||||
#define RM_SS "0x14"
|
||||
#define RM_SP "0x16"
|
||||
#define RM_DS "0x18"
|
||||
/* backup values, pointers/parameters accessible in protected mode */
|
||||
|
||||
/**
|
||||
* @brief backup values, pointers/parameters accessible in protected mode
|
||||
*
|
||||
* @note Struct members not necessarily used in C. This serves also as
|
||||
* layout of memory and it is used within inline assembler.
|
||||
*/
|
||||
typedef struct {
|
||||
/** spot for backup protected mode interrupt descriptor table register */
|
||||
uint16_t idtr_lim_bkp;
|
||||
/** @see idtr_lim_bkp */
|
||||
uint32_t idtr_base_bkp;
|
||||
/** spot to backup of ES register value in 32bit protected mode */
|
||||
uint16_t es_bkp;
|
||||
/** spot to backup of FS register value in 32bit protected mode */
|
||||
uint16_t fs_bkp;
|
||||
/** spot to backup of GS register value in 32bit protected mode */
|
||||
uint16_t gs_bkp;
|
||||
/** values for indirect jump to 16bit protected mode */
|
||||
uint32_t rml_entry;
|
||||
/** @see rml_entry */
|
||||
uint16_t rml_code_selector;
|
||||
/** data selector for 16bit protected mode */
|
||||
uint16_t rml_data_selector;
|
||||
/** values determinig location of real mode stack */
|
||||
uint16_t rm_stack_segment;
|
||||
/** @see rm_stack_segment */
|
||||
uint16_t rm_stack_pointer;
|
||||
/** data segment for real mode */
|
||||
uint16_t rm_data_segment;
|
||||
} RTEMS_COMPILER_PACKED_ATTRIBUTE pm_bkp_and_param;
|
||||
|
||||
@@ -112,10 +157,14 @@ static __DP_TYPE descsPrepared = __DP_NO;
|
||||
static uint16_t rml_code_dsc_index = 0;
|
||||
static uint16_t rml_data_dsc_index = 0;
|
||||
|
||||
/*
|
||||
* Prepares real-mode like descriptors to be used for switching
|
||||
/**
|
||||
* @brief Prepares real-mode like descriptors to be used for switching
|
||||
* to real mode.
|
||||
*
|
||||
* Descriptors will be placed to the GDT.
|
||||
*
|
||||
* @param[in] base32 32-bit physical address to be used as base for 16-bit
|
||||
* protected mode descriptors
|
||||
* @retval __DP_YES descriptors are prepared
|
||||
* @retval __DP_FAIL descriptors allocation failed (GDT too small)
|
||||
*/
|
||||
|
||||
@@ -4,14 +4,14 @@
|
||||
* @ingroup i386_shared
|
||||
*
|
||||
* @brief Definitioins supporting real mode interrupt calls.
|
||||
*
|
||||
* Interface allows calling given interrupt number with content of the
|
||||
* registers defined. For passing or receiving higher amounts of the data
|
||||
* there is a buffer accessible from real mode available. Real mode pointer
|
||||
* to this buffer is passed to the interrupt in the registers.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Interface allows calling given interrupt number with content of the
|
||||
* registers defined. For passing or receiving higher amounts of the data
|
||||
* there is a buffer accessible from real mode available. Real mode pointer
|
||||
* to this buffer is passed to the interrupt in the registers.
|
||||
*
|
||||
* Copyright (C) 2014 Jan Doležal (dolezj21@fel.cvut.cz)
|
||||
* CTU in Prague.
|
||||
*
|
||||
@@ -36,7 +36,11 @@ extern "C" {
|
||||
/* number of interrupt servicing video functions */
|
||||
#define INTERRUPT_NO_VIDEO_SERVICES 0x10
|
||||
|
||||
typedef struct { /* used for passing parameters, fetching results and preserving values */
|
||||
/**
|
||||
* @brief Used for passing and retrieving registers content to/from real mode
|
||||
* interrupt call.
|
||||
*/
|
||||
typedef struct {
|
||||
uint32_t reg_eax;
|
||||
uint32_t reg_ebx;
|
||||
uint32_t reg_ecx;
|
||||
@@ -50,6 +54,8 @@ typedef struct { /* used for passing parameters, fetching results and preserving
|
||||
} RTEMS_COMPILER_PACKED_ATTRIBUTE i386_realmode_interrupt_registers;
|
||||
|
||||
/**
|
||||
* @brief Returns buffer and its size usable with real mode interrupt call.
|
||||
*
|
||||
* Provides position to real mode buffer. It is buffer
|
||||
* accessible from real mode context - it is located below
|
||||
* address ~0x100000 in order for it to be accessible
|
||||
@@ -57,22 +63,25 @@ typedef struct { /* used for passing parameters, fetching results and preserving
|
||||
* and through this get bigger portion of an information to/from
|
||||
* interrupt service routine than just by using register.
|
||||
*
|
||||
* @param size pointer to variable, where the size of buffer
|
||||
* will be filled
|
||||
* @param[out] size pointer to variable, where the size of buffer
|
||||
* will be filled
|
||||
* @retval pointer to buffer
|
||||
*/
|
||||
extern void *i386_get_default_rm_buffer(uint16_t *size);
|
||||
|
||||
/**
|
||||
* @brief Call to real mode interrupt with specified int NO and processor
|
||||
* registers.
|
||||
*
|
||||
* This function allows calling interrupts in real mode and to set processor
|
||||
* registers as desired before interrupt call is made and to retrieve the
|
||||
* registers content after call was made.
|
||||
*
|
||||
* @param interruptNumber interrupt number to be called
|
||||
* @param ir pointer to structure containing registers to be passed to interrupt
|
||||
* and to retrieve register content after call was made.
|
||||
* @param[in] interrupt_number interrupt number to be called
|
||||
* @param[in] ir pointer to structure containing registers to be passed to
|
||||
* interrupt and to retrieve register content after call was made.
|
||||
* @retval 0 call failed (GDT too small or pagin is on)
|
||||
* 1 call successful
|
||||
* @retval 1 call successful
|
||||
*/
|
||||
extern int i386_real_interrupt_call(
|
||||
uint8_t interrupt_number,
|
||||
|
||||
@@ -1,5 +1,7 @@
|
||||
/*
|
||||
* cpu.h - This file contains definitions for data structure related
|
||||
* @file cpu.h
|
||||
*
|
||||
* This file contains definitions for data structure related
|
||||
* to Intel system programming. More information can be found
|
||||
* on Intel site and more precisely in the following book :
|
||||
*
|
||||
@@ -241,7 +243,9 @@ extern int i386_get_idt_config (rtems_raw_irq_global_settings** config);
|
||||
* See page 11.12 Figure 11-8.
|
||||
*
|
||||
*/
|
||||
|
||||
/**
|
||||
* @brief describes one entry of Global/Local Descriptor Table
|
||||
*/
|
||||
typedef struct {
|
||||
unsigned int limit_15_0 : 16;
|
||||
unsigned int base_address_15_0 : 16;
|
||||
@@ -272,34 +276,36 @@ extern void i386_set_GDTR (segment_descriptors*,
|
||||
uint16_t limit);
|
||||
|
||||
/**
|
||||
* C callable function:
|
||||
* Puts global descriptor @sd to the global descriptor table on index
|
||||
* @segment_selector_index
|
||||
* @brief Allows to set a GDT entry.
|
||||
*
|
||||
* Puts global descriptor \p sd to the global descriptor table on index
|
||||
* \p segment_selector_index
|
||||
*
|
||||
* @param[in] segment_selector_index index to GDT entry
|
||||
* @param[in] sd structure to be coppied to given \p segment_selector in GDT
|
||||
* @retval 0 FAILED out of GDT range or index is 0, which is not valid
|
||||
* index in GDT
|
||||
* 1 SUCCESS
|
||||
* @retval 1 SUCCESS
|
||||
*/
|
||||
extern uint32_t i386_raw_gdt_entry (uint16_t segment_selector_index,
|
||||
segment_descriptors* sd);
|
||||
|
||||
/**
|
||||
* C callable function
|
||||
* fills @sd with provided @base in appropriate fields of @sd
|
||||
* @brief fills \p sd with provided \p base in appropriate fields of \p sd
|
||||
*
|
||||
* @param base 32-bit address to be set as descriptor's base
|
||||
* @param sd descriptor being filled with @base
|
||||
* @param[in] base 32-bit address to be set as descriptor's base
|
||||
* @param[out] sd descriptor being filled with \p base
|
||||
*/
|
||||
extern void i386_fill_segment_desc_base (uint32_t base,
|
||||
segment_descriptors* sd);
|
||||
|
||||
/**
|
||||
* C callable function
|
||||
* fills @sd with provided @limit in appropriate fields of @sd
|
||||
* also influences granularity bit
|
||||
* @brief fills \p sd with provided \p limit in appropriate fields of \p sd
|
||||
*
|
||||
* @param limit 32-bit value representing number of limit bytes
|
||||
* @param sd descriptor being filled with @limit
|
||||
* sets granularity bit if necessary
|
||||
*
|
||||
* @param[in] limit 32-bit value representing number of limit bytes
|
||||
* @param[out] sd descriptor being filled with \p limit
|
||||
*/
|
||||
extern void i386_fill_segment_desc_limit (uint32_t limit,
|
||||
segment_descriptors* sd);
|
||||
@@ -312,37 +318,40 @@ extern uint32_t i386_set_gdt_entry (uint16_t segment_selector,
|
||||
uint32_t limit);
|
||||
|
||||
/**
|
||||
* C callable function returns next empty descriptor in GDT.
|
||||
* @brief Returns next empty descriptor in GDT.
|
||||
*
|
||||
* Number of descriptors that can be returned depends on \a GDT_SIZE
|
||||
*
|
||||
* @retval 0 FAILED GDT is full
|
||||
* <1;65535> segment_selector number as index to GDT
|
||||
* @retval <1;65535> segment_selector number as index to GDT
|
||||
*/
|
||||
extern uint16_t i386_next_empty_gdt_entry (void);
|
||||
|
||||
/**
|
||||
* Copies GDT entry at index @segment_selector to structure
|
||||
* pointed to by @struct_to_fill
|
||||
* @brief Copies GDT entry at index \p segment_selector to structure
|
||||
* pointed to by \p struct_to_fill
|
||||
*
|
||||
* @param segment_selector index to GDT table for specifying descriptor to copy
|
||||
* @param[in] segment_selector index to GDT table specifying descriptor to copy
|
||||
* @param[out] struct_to_fill pointer to memory where will be descriptor coppied
|
||||
* @retval 0 FAILED segment_selector out of GDT range
|
||||
* <1;65535> retrieved segment_selector
|
||||
* @retval <1;65535> retrieved segment_selector
|
||||
*/
|
||||
extern uint16_t i386_cpy_gdt_entry (uint16_t segment_selector,
|
||||
segment_descriptors* struct_to_fill);
|
||||
|
||||
/**
|
||||
* Returns pointer to GDT table at index given by @segment_selector
|
||||
* @brief Returns pointer to GDT table at index given by \p segment_selector
|
||||
*
|
||||
* @param segment_selector index to GDT table for specifying descriptor to get
|
||||
* @param[in] sgmnt_selector index to GDT table for specifying descriptor to get
|
||||
* @retval NULL FAILED segment_selector out of GDT range
|
||||
* pointer to GDT table at @segment_selector
|
||||
* @retval pointer to GDT table at \p segment_selector
|
||||
*/
|
||||
extern segment_descriptors* i386_get_gdt_entry (uint16_t sgmnt_selector);
|
||||
|
||||
/**
|
||||
* Extracts base address from GDT entry pointed to by @gdt_entry
|
||||
* @brief Extracts base address from GDT entry pointed to by \p gdt_entry
|
||||
*
|
||||
* @param gdt_entry pointer to entry from which base should be retrieved
|
||||
* @param[in] gdt_entry pointer to entry from which base should be retrieved
|
||||
* @retval base address from GDT entry
|
||||
*/
|
||||
RTEMS_INLINE_ROUTINE void* i386_base_gdt_entry (segment_descriptors* gdt_entry)
|
||||
@@ -353,9 +362,9 @@ RTEMS_INLINE_ROUTINE void* i386_base_gdt_entry (segment_descriptors* gdt_entry)
|
||||
}
|
||||
|
||||
/**
|
||||
* Extracts limit in bytes from GDT entry pointed to by @gdt_entry
|
||||
* @brief Extracts limit in bytes from GDT entry pointed to by \p gdt_entry
|
||||
*
|
||||
* @param gdt_entry pointer to entry from which limit should be retrieved
|
||||
* @param[in] gdt_entry pointer to entry from which limit should be retrieved
|
||||
* @retval limit value in bytes from GDT entry
|
||||
*/
|
||||
extern uint32_t i386_limit_gdt_entry (segment_descriptors* gdt_entry);
|
||||
|
||||
@@ -334,9 +334,9 @@ SYM (i386_Physical_to_logical):
|
||||
* uint16_t *offset
|
||||
* );
|
||||
*
|
||||
* Fills segment:offest realmode pointer counted from thirty-two bit physical
|
||||
* Fills segment:offest real mode pointer counted from thirty-two bit physical
|
||||
* address.
|
||||
* Returns 0 if unconvertible, 1 if successfuly converted.
|
||||
* Returns 0 if inconvertible, 1 if successfuly converted.
|
||||
*/
|
||||
|
||||
.set PHYS_PTR_ARG, 4
|
||||
|
||||
@@ -185,10 +185,14 @@ void *i386_Physical_to_logical(
|
||||
void *address
|
||||
);
|
||||
|
||||
/*
|
||||
* i386_Real_to_physical
|
||||
/**
|
||||
* @brief Converts real mode pointer {segment, offset} to physical address.
|
||||
*
|
||||
* Converts real mode pointer {segment, offset} to physical address.
|
||||
* i386_Real_to_physical
|
||||
*
|
||||
* @param[in] segment used with \p offset to compute physical address
|
||||
* @param[in] offset used with \p segment to compute physical address
|
||||
* @retval physical address
|
||||
*/
|
||||
RTEMS_INLINE_ROUTINE void *i386_Real_to_physical(
|
||||
uint16_t segment,
|
||||
@@ -197,19 +201,24 @@ RTEMS_INLINE_ROUTINE void *i386_Real_to_physical(
|
||||
return (void *)(((uint32_t)segment<<4)+offset);
|
||||
}
|
||||
|
||||
/*
|
||||
* i386_Physical_to_real
|
||||
* Retreives real mode pointer elements {segmnet, offset} from physical address
|
||||
* Function returns the highest segment (base) address possible.
|
||||
* Example: input address - 0x4B3A2
|
||||
* output segment - 0x4B3A
|
||||
* offset - 0x2
|
||||
* input address - 0x10F12E
|
||||
* output segment - 0xFFFF
|
||||
* offset - 0xF13E
|
||||
/**
|
||||
* @brief Retreives real mode pointer elements {segmnet, offset} from
|
||||
* physical address.
|
||||
*
|
||||
* return 0 address not convertible, must be less than 0x10FFEF
|
||||
* 1 segment and offset extracted
|
||||
* i386_Physical_to_real
|
||||
* Function returns the highest segment (base) address possible.
|
||||
* Example: input address - 0x4B3A2
|
||||
* output segment - 0x4B3A
|
||||
* offset - 0x2
|
||||
* input address - 0x10F12E
|
||||
* output segment - 0xFFFF
|
||||
* offset - 0xF13E
|
||||
*
|
||||
* @param[in] address address to be converted, must be less than 0x10FFEF
|
||||
* @param[out] segment segment computed from \p address
|
||||
* @param[out] offset offset computed from \p address
|
||||
* @retval 0 address not convertible
|
||||
* @retval 1 segment and offset extracted
|
||||
*/
|
||||
int i386_Physical_to_real(
|
||||
void *address,
|
||||
|
||||
Reference in New Issue
Block a user