boot/freeldr/freeldr/arch/arm/macharm.c

   1 /*
   2  * PROJECT:         ReactOS Boot Loader
   3  * LICENSE:         BSD - See COPYING.ARM in the top level directory
   4  * FILE:            boot/freeldr/arch/arm/marcharm.c
   5  * PURPOSE:         Provides abstraction between the ARM Boot Loader and FreeLDR
   6  * PROGRAMMERS:     ReactOS Portable Systems Group
   7  */
   8
   9 /* INCLUDES *******************************************************************/
  10
  11 #include <freeldr.h>
  12 #include <internal/arm/intrin_i.h>
  13
  14 /* GLOBALS ********************************************************************/
  15
  16 PARM_BOARD_CONFIGURATION_BLOCK ArmBoardBlock;
  17 ULONG gDiskReadBuffer, gFileSysBuffer;
  18 BOOLEAN ArmHwDetectRan;
  19 PCONFIGURATION_COMPONENT_DATA RootNode;
  20
  21 BOOLEAN AcpiPresent = FALSE;
  22
  23 ULONG FirstLevelDcacheSize;
  24 ULONG FirstLevelDcacheFillSize;
  25 ULONG FirstLevelIcacheSize;
  26 ULONG FirstLevelIcacheFillSize;
  27 ULONG SecondLevelDcacheSize;
  28 ULONG SecondLevelDcacheFillSize;
  29 ULONG SecondLevelIcacheSize;
  30 ULONG SecondLevelIcacheFillSize;
  31
  32 ARC_DISK_SIGNATURE reactos_arc_disk_info;
  33 ULONG reactos_disk_count;
  34 CHAR reactos_arc_hardware_data[256];
  35
  36 ULONG SizeBits[] =
  37 {
  38     -1,      // INVALID
  39     -1,      // INVALID
  40     1 << 12, // 4KB
  41     1 << 13, // 8KB
  42     1 << 14, // 16KB
  43     1 << 15, // 32KB
  44     1 << 16, // 64KB
  45     1 << 17  // 128KB
  46 };
  47
  48 ULONG AssocBits[] =
  49 {
  50     -1,      // INVALID
  51     -1,      // INVALID
  52     4        // 4-way associative
  53 };
  54
  55 ULONG LenBits[] =
  56 {
  57     -1,      // INVALID
  58     -1,      // INVALID
  59     8        // 8 words per line (32 bytes)
  60 };
  61
  62 /* FUNCTIONS ******************************************************************/
  63
  64 VOID
  65 ArmInit(IN PARM_BOARD_CONFIGURATION_BLOCK BootContext)
  66 {
  67     /* Remember the pointer */
  68     ArmBoardBlock = BootContext;
  69
  70     /* Let's make sure we understand the LLB */
  71     ASSERT(ArmBoardBlock->MajorVersion == ARM_BOARD_CONFIGURATION_MAJOR_VERSION);
  72     ASSERT(ArmBoardBlock->MinorVersion == ARM_BOARD_CONFIGURATION_MINOR_VERSION);
  73
  74     /* This should probably go away once we support more boards */
  75     ASSERT((ArmBoardBlock->BoardType == MACH_TYPE_FEROCEON) ||
  76            (ArmBoardBlock->BoardType == MACH_TYPE_VERSATILE_PB) ||
  77            (ArmBoardBlock->BoardType == MACH_TYPE_OMAP3_BEAGLE) ||
  78            (ArmBoardBlock->BoardType == MACH_TYPE_OMAP_ZOOM2));
  79
  80     /* Call FreeLDR's portable entrypoint with our command-line */
  81     BootMain(ArmBoardBlock->CommandLine);
  82 }
  83
  84 VOID
  85 ArmPrepareForReactOS(IN BOOLEAN Setup)
  86 {
  87     return;
  88 }
  89
  90 BOOLEAN
  91 ArmDiskGetBootPath(OUT PCHAR BootPath,
  92                    IN unsigned Size)
  93 {
  94     PCCH Path = "ramdisk(0)";
  95
  96     /* Make sure enough space exists */
  97     if (Size < sizeof(Path)) return FALSE;
  98
  99     /* On ARM platforms, the loader is always in RAM */
 100     strcpy(BootPath, Path);
 101     return TRUE;
 102 }
 103
 104 PCONFIGURATION_COMPONENT_DATA
 105 ArmHwDetect(VOID)
 106 {
 107     ARM_CACHE_REGISTER CacheReg;
 108
 109     /* Create the root node */
 110     if (ArmHwDetectRan++) return RootNode;
 111     FldrCreateSystemKey(&RootNode);
 112
 113     /*
 114      * TODO:
 115      * There's no such thing as "PnP" on embedded hardware.
 116      * The boot loader will send us a device tree, similar to ACPI
 117      * or OpenFirmware device trees, and we will convert it to ARC.
 118      */
 119
 120     /* Get cache information */
 121     CacheReg = KeArmCacheRegisterGet();
 122     FirstLevelDcacheSize = SizeBits[CacheReg.DSize];
 123     FirstLevelDcacheFillSize = LenBits[CacheReg.DLength];
 124     FirstLevelDcacheFillSize <<= 2;
 125     FirstLevelIcacheSize = SizeBits[CacheReg.ISize];
 126     FirstLevelIcacheFillSize = LenBits[CacheReg.ILength];
 127     FirstLevelIcacheFillSize <<= 2;
 128     SecondLevelDcacheSize =
 129     SecondLevelDcacheFillSize =
 130     SecondLevelIcacheSize =
 131     SecondLevelIcacheFillSize = 0;
 132
 133     /* Register RAMDISK Device */
 134     RamDiskInitialize();
 135
 136     /* Fill out the ARC disk block */
 137     reactos_arc_disk_info.Signature = 0xBADAB00F;
 138     reactos_arc_disk_info.CheckSum = 0xDEADBABE;
 139     reactos_arc_disk_info.ArcName = "ramdisk(0)";
 140     reactos_disk_count = 1;
 141
 142     /* Return the root node */
 143     return RootNode;
 144 }
 145
 146 FREELDR_MEMORY_DESCRIPTOR ArmMemoryMap[32];
 147
 148 PFREELDR_MEMORY_DESCRIPTOR
 149 ArmMemGetMemoryMap(OUT ULONG *MemoryMapSize)
 150 {
 151     ASSERT(ArmBoardBlock->MemoryMapEntryCount <= 32);
 152
 153     /* Return whatever the board returned to us (CS0 Base + Size and FLASH0) */
 154     for (i = 0; i < ArmBoardBlock->MemoryMapEntryCount; i++)
 155     {
 156         ArmMemoryMap[i].BasePage = ArmBoardBlock->MemoryMap[i].BaseAddress / PAGE_SIZE;
 157         ArmMemoryMap[i].PageCount = ArmBoardBlock->MemoryMap[i].Length / PAGE_SIZE;
 158         if (ArmBoardBlock->MemoryMap[i].Type == BiosMemoryUsable)
 159             ArmMemoryMap[i].MemoryType = MemoryFree;
 160         else
 161             ArmMemoryMap[i].MemoryType = MemoryFirmwarePermanent;
 162     }
 163
 164     return ArmBoardBlock->MemoryMapEntryCount;
 165 }
 166
 167 VOID
 168 ArmHwIdle(VOID)
 169 {
 170     /* UNIMPLEMENTED */
 171 }
 172
 173 VOID
 174 MachInit(IN PCCH CommandLine)
 175 {
 176     /* Copy Machine Routines from Firmware Table */
 177     MachVtbl.ConsPutChar = ArmBoardBlock->ConsPutChar;
 178     MachVtbl.ConsKbHit = ArmBoardBlock->ConsKbHit;
 179     MachVtbl.ConsGetCh = ArmBoardBlock->ConsGetCh;
 180     MachVtbl.VideoClearScreen = ArmBoardBlock->VideoClearScreen;
 181     MachVtbl.VideoSetDisplayMode = ArmBoardBlock->VideoSetDisplayMode;
 182     MachVtbl.VideoGetDisplaySize = ArmBoardBlock->VideoGetDisplaySize;
 183     MachVtbl.VideoPutChar = ArmBoardBlock->VideoPutChar;
 184     MachVtbl.GetTime = ArmBoardBlock->GetTime;
 185
 186     /* Setup board-specific ARM routines */
 187     switch (ArmBoardBlock->BoardType)
 188     {
 189         /* Check for Feroceon-base boards */
 190         case MACH_TYPE_FEROCEON:
 191             TuiPrintf("Not implemented\n");
 192             while (TRUE);
 193             break;
 194
 195         /* Check for TI OMAP3 ZOOM-II MDK */
 196         case MACH_TYPE_OMAP_ZOOM2:
 197
 198             /* Setup the disk and file system buffers */
 199             gDiskReadBuffer = 0x81094000;
 200             gFileSysBuffer = 0x81094000;
 201             break;
 202
 203         /* Check for ARM Versatile PB boards */
 204         case MACH_TYPE_VERSATILE_PB:
 205
 206             /* Setup the disk and file system buffers */
 207             gDiskReadBuffer = 0x00090000;
 208             gFileSysBuffer = 0x00090000;
 209             break;
 210
 211         /* Check for TI OMAP3 Beagleboard */
 212         case MACH_TYPE_OMAP3_BEAGLE:
 213             TuiPrintf("Not implemented\n");
 214             while (TRUE);
 215             break;
 216
 217         default:
 218             ASSERT(FALSE);
 219     }
 220
 221     /* Setup generic ARM routines for all boards */
 222     MachVtbl.PrepareForReactOS = ArmPrepareForReactOS;
 223     MachVtbl.GetMemoryMap = ArmMemGetMemoryMap;
 224     MachVtbl.HwDetect = ArmHwDetect;
 225     MachVtbl.DiskGetBootPath = ArmDiskGetBootPath;
 226     MachVtbl.HwIdle = ArmHwIdle;
 227 }