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comrogue-pi/include/comrogue/internals/startup.h

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/*
* This file is part of the COMROGUE Operating System for Raspberry Pi
*
* Copyright (c) 2013, Eric J. Bowersox / Erbosoft Enterprises
* All rights reserved.
*
* This program is free for commercial and non-commercial use as long as the following conditions are
* adhered to.
*
* Copyright in this file remains Eric J. Bowersox and/or Erbosoft, and as such any copyright notices
* in the code are not to be removed.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted
* provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this list of conditions and
* the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
* the following disclaimer in the documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* "Raspberry Pi" is a trademark of the Raspberry Pi Foundation.
*/
#ifndef __STARTUP_H_INCLUDED
#define __STARTUP_H_INCLUDED
#ifdef __COMROGUE_INTERNALS__
#ifdef __COMROGUE_PRESTART__
/*------------------------------------------------
* ATAG data passed to the kernel at startup time
*------------------------------------------------
*/
/* The different ATAG types. */
#define ATAGTYPE_NONE 0 /* none - end of list */
#define ATAGTYPE_CORE 0x54410001 /* core - this one must be first */
#define ATAGTYPE_MEM 0x54410002 /* memory */
#define ATAGTYPE_VIDEOTEXT 0x54410003 /* text-mode video */
#define ATAGTYPE_RAMDISK 0x54410004 /* RAM disk */
#define ATAGTYPE_INITRD2 0x54420005 /* compressed initial RAM disk */
#define ATAGTYPE_SERIAL 0x54410006 /* serial number */
#define ATAGTYPE_REVISION 0x54410007 /* revision */
#define ATAGTYPE_VIDEOLFB 0x54410008 /* linear framebuffer video */
#define ATAGTYPE_CMDLINE 0x54410009 /* command line */
/* Flags for the core ATAG's uiFlags member. */
#define ATAG_COREFLAG_READONLY 0x00000001 /* read only */
#define ATAG_RAMDISKFLAG_LOAD 0x00000001
#define ATAG_RAMDISKFLAG_PROMPT 0x00000002
#endif /* __COMROGUE_PRESTART__ */
#ifndef __ASM__
#include <comrogue/types.h>
#ifdef __COMROGUE_PRESTART__
/* Header of all ATAGs. */
typedef struct tagATAG_HEADER {
UINT32 uiSize; /* size of the tag, in 32-bit words */
UINT32 uiTag; /* the tag indicator */
} ATAG_HEADER, *PATAG_HEADER;
/* Core ATAG - must be first in the list */
typedef struct tagATAG_CORE {
ATAG_HEADER hdr; /* header */
UINT32 uiFlags; /* core flags, see above */
UINT32 uiPageSize; /* system page size in bytes */
UINT32 uiRootDevice; /* root device number */
} ATAG_CORE, *PATAG_CORE;
/* Memory ATAG */
typedef struct tagATAG_MEM {
ATAG_HEADER hdr; /* header */
UINT32 uiSize; /* size of memory */
PHYSADDR paStart; /* physical address of start of memory */
} ATAG_MEM, *PATAG_MEM;
/* Text-mode video ATAG */
typedef struct tagATAG_VIDEOTEXT {
ATAG_HEADER hdr; /* header */
BYTE bWidth; /* display width */
BYTE bHeight; /* display height */
UINT16 uiVideoPage;
BYTE bVideoMode;
BYTE bColumns;
UINT16 uiEGABX;
BYTE bLines;
BYTE bIsVGA;
UINT16 uiPoints;
} ATAG_VIDEOTEXT, *PATAG_VIDEOTEXT;
/* RAM disk ATAG */
typedef struct tagATAG_RAMDISK {
ATAG_HEADER hdr; /* header */
UINT32 uiFlags; /* RAM disk flags, see above */
UINT32 uiSize; /* size of ramdisk in kB */
UINT32 uiStartBlock; /* starting block of ramdisk */
} ATAG_RAMDISK, *PATAG_RAMDISK;
/* Initial ramdisk image ATAG */
typedef struct tagATAG_INITRD2 {
ATAG_HEADER hdr; /* header */
PHYSADDR paStart; /* physical address of compressed ramdisk image */
UINT32 uiSize; /* size of compressed ramdisk image in bytes */
} ATAG_INITRD2, *PATAG_INITRD2;
/* Serial number ATAG */
typedef struct tagATAG_SERIAL {
ATAG_HEADER hdr; /* header */
UINT32 uiSerialNumberLow; /* low word of serial number */
UINT32 uiSerialNumberHigh; /* high word of serial number */
} ATAG_SERIAL, *PATAG_SERIAL;
/* Revision number ATAG */
typedef struct tagATAG_REVISION {
ATAG_HEADER hdr; /* header */
UINT32 uiRevision; /* revision number */
} ATAG_REVISION, *PATAG_REVISION;
/* Linear framebuffer video ATAG */
typedef struct tagATAG_VIDEOLFB {
ATAG_HEADER hdr; /* header */
UINT16 uiFrameBufferWidth;
UINT16 uiFrameBufferHeight;
UINT16 uiFrameBufferDepth;
UINT16 uiFrameBufferLineLength;
UINT32 uiFrameBufferBase;
UINT32 uiFrameBufferSize;
BYTE bRedSize;
BYTE bRedPos;
BYTE bGreenSize;
BYTE bGreenPos;
BYTE bBlueSize;
BYTE bBluePos;
BYTE bReservedSize;
BYTE bReservedPos;
} ATAG_VIDEOLFB, *PATAG_VIDEOLFB;
/* Command line ATAG */
typedef struct tagATAG_CMDLINE {
ATAG_HEADER hdr; /* header */
CHAR szCommandLine[1]; /* text of command line, null-terminated */
} ATAG_CMDLINE, *PATAG_CMDLINE;
/* Macro to advance to the next ATAG */
#define kiNextATAG(p) ((PATAG_HEADER)(((PUINT32)(p)) + ((PATAG_HEADER)(p))->uiSize))
#endif /* __COMROGUE_PRESTART__ */
/*----------------------------------------------------------------
* The startup information buffer filled in by the prestart code.
*----------------------------------------------------------------
*/
typedef struct tagSTARTUP_INFO {
/* start of structure accessed from ASM - be careful here */
UINT32 cb; /* number of bytes in this structure */
PHYSADDR paTTB; /* physical address of the TTB */
KERNADDR kaTTB; /* kernel address of the TTB */
/* end of structure accessed from ASM - be careful here */
UINT32 uiMachineType; /* machine type indicator */
UINT32 uiRevision; /* board revision */
UINT32 uiSerialNumber; /* serial number */
UINT32 cpgSystemTotal; /* total number of memory pages in the system */
UINT32 cpgSystemAvail; /* available memory pages in the system after GPU takes its bite */
UINT32 cpgTTBGap; /* number of pages in the "gap" between the end of kernel and TTB */
PHYSADDR paMPDB; /* physical address of the Master Page Database */
KERNADDR kaMPDB; /* kernel address of the Master Page Database */
UINT32 cpgMPDB; /* number of pages we allocated for Master Page Database */
PHYSADDR paFirstPageTable; /* physical address of the first page table */
UINT32 cpgPageTables; /* number of pages we allocated for page tables */
UINT32 ctblFreeOnLastPage; /* number of page tables free on last page (0 or 1) */
PHYSADDR paFirstFree; /* first free physical address after initial page tables */
KERNADDR vmaFirstFree; /* first free virtual memory address after mapped TTB */
UINT32 uiEMMCClockFreq; /* EMMC clock frequency */
PHYSADDR paVCMem; /* VideoCore memory base */
UINT32 cbVCMem; /* VideoCore memory size in bytes */
UINT16 cxFBWidth; /* frame buffer width in pixels */
UINT16 cyFBHeight; /* frame buffer height in pixels */
BYTE abMACAddress[6]; /* MAC address of the network interface */
} STARTUP_INFO, *PSTARTUP_INFO;
#endif /* __ASM__ */
#endif /* __COMROGUE_INTERNALS__ */
#endif /* __STARTUP_H_INCLUDED */
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