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/freeldr/arch/arm/macharm.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 extern ULONG reactos_disk_count;
  33
  34 ULONG SizeBits[] =
  35 {
  36     -1,      // INVALID
  37     -1,      // INVALID
  38     1 << 12, // 4KB
  39     1 << 13, // 8KB
  40     1 << 14, // 16KB
  41     1 << 15, // 32KB
  42     1 << 16, // 64KB
  43     1 << 17  // 128KB
  44 };
  45
  46 ULONG AssocBits[] =
  47 {
  48     -1,      // INVALID
  49     -1,      // INVALID
  50     4        // 4-way associative
  51 };
  52
  53 ULONG LenBits[] =
  54 {
  55     -1,      // INVALID
  56     -1,      // INVALID
  57     8        // 8 words per line (32 bytes)
  58 };
  59
  60 /* FUNCTIONS ******************************************************************/
  61
  62 VOID DiskStopFloppyMotor(VOID)
  63 {
  64 }
  65
  66 VOID
  67 FrLdrCheckCpuCompatibility(VOID)
  68 {
  69     /* Nothing for now */
  70 }
  71
  72 VOID
  73 ArmInit(IN PARM_BOARD_CONFIGURATION_BLOCK BootContext)
  74 {
  75     /* Remember the pointer */
  76     ArmBoardBlock = BootContext;
  77
  78     /* Let's make sure we understand the LLB */
  79     ASSERT(ArmBoardBlock->MajorVersion == ARM_BOARD_CONFIGURATION_MAJOR_VERSION);
  80     ASSERT(ArmBoardBlock->MinorVersion == ARM_BOARD_CONFIGURATION_MINOR_VERSION);
  81
  82     /* This should probably go away once we support more boards */
  83     ASSERT((ArmBoardBlock->BoardType == MACH_TYPE_FEROCEON) ||
  84            (ArmBoardBlock->BoardType == MACH_TYPE_VERSATILE_PB) ||
  85            (ArmBoardBlock->BoardType == MACH_TYPE_OMAP3_BEAGLE) ||
  86            (ArmBoardBlock->BoardType == MACH_TYPE_OMAP_ZOOM2));
  87
  88     /* Call FreeLDR's portable entrypoint with our command-line */
  89     BootMain(ArmBoardBlock->CommandLine);
  90 }
  91
  92 VOID
  93 ArmPrepareForReactOS(IN BOOLEAN Setup)
  94 {
  95     return;
  96 }
  97
  98 BOOLEAN
  99 ArmDiskGetBootPath(OUT PCHAR BootPath, IN ULONG Size)
 100 {
 101     PCCH Path = "ramdisk(0)";
 102
 103     /* Make sure enough space exists */
 104     if (Size < sizeof(Path)) return FALSE;
 105
 106     /* On ARM platforms, the loader is always in RAM */
 107     strcpy(BootPath, Path);
 108     return TRUE;
 109 }
 110
 111 PCONFIGURATION_COMPONENT_DATA
 112 ArmHwDetect(VOID)
 113 {
 114     ARM_CACHE_REGISTER CacheReg;
 115
 116     /* Create the root node */
 117     if (ArmHwDetectRan++) return RootNode;
 118     FldrCreateSystemKey(&RootNode);
 119
 120     /*
 121      * TODO:
 122      * There's no such thing as "PnP" on embedded hardware.
 123      * The boot loader will send us a device tree, similar to ACPI
 124      * or OpenFirmware device trees, and we will convert it to ARC.
 125      */
 126
 127     /* Get cache information */
 128     CacheReg = KeArmCacheRegisterGet();
 129     FirstLevelDcacheSize = SizeBits[CacheReg.DSize];
 130     FirstLevelDcacheFillSize = LenBits[CacheReg.DLength];
 131     FirstLevelDcacheFillSize <<= 2;
 132     FirstLevelIcacheSize = SizeBits[CacheReg.ISize];
 133     FirstLevelIcacheFillSize = LenBits[CacheReg.ILength];
 134     FirstLevelIcacheFillSize <<= 2;
 135     SecondLevelDcacheSize =
 136     SecondLevelDcacheFillSize =
 137     SecondLevelIcacheSize =
 138     SecondLevelIcacheFillSize = 0;
 139
 140     /* Register RAMDISK Device */
 141     RamDiskInitialize();
 142
 143     /* Fill out the ARC disk block */
 144     AddReactOSArcDiskInfo("ramdisk(0)", 0xBADAB00F, 0xDEADBABE, TRUE);
 145     ASSERT(reactos_disk_count == 1);
 146
 147     /* Return the root node */
 148     return RootNode;
 149 }
 150
 151 BOOLEAN
 152 ArmInitializeBootDevices(VOID)
 153 {
 154     /* Emulate old behavior */
 155     return (ArmHwDetect() != NULL);
 156 }
 157
 158 FREELDR_MEMORY_DESCRIPTOR ArmMemoryMap[32];
 159
 160 PFREELDR_MEMORY_DESCRIPTOR
 161 ArmMemGetMemoryMap(OUT ULONG *MemoryMapSize)
 162 {
 163     ULONG i;
 164     ASSERT(ArmBoardBlock->MemoryMapEntryCount <= 32);
 165
 166     /* Return whatever the board returned to us (CS0 Base + Size and FLASH0) */
 167     for (i = 0; i < ArmBoardBlock->MemoryMapEntryCount; i++)
 168     {
 169         ArmMemoryMap[i].BasePage = ArmBoardBlock->MemoryMap[i].BaseAddress / PAGE_SIZE;
 170         ArmMemoryMap[i].PageCount = ArmBoardBlock->MemoryMap[i].Length / PAGE_SIZE;
 171         if (ArmBoardBlock->MemoryMap[i].Type == BiosMemoryUsable)
 172             ArmMemoryMap[i].MemoryType = MemoryFree;
 173         else
 174             ArmMemoryMap[i].MemoryType = MemoryFirmwarePermanent;
 175     }
 176
 177     *MemoryMapSize = ArmBoardBlock->MemoryMapEntryCount;
 178
 179     // FIXME
 180     return NULL;
 181 }
 182
 183 VOID
 184 ArmHwIdle(VOID)
 185 {
 186     /* UNIMPLEMENTED */
 187 }
 188
 189 VOID
 190 MachInit(IN PCCH CommandLine)
 191 {
 192     /* Copy Machine Routines from Firmware Table */
 193     MachVtbl.ConsPutChar = ArmBoardBlock->ConsPutChar;
 194     MachVtbl.ConsKbHit = ArmBoardBlock->ConsKbHit;
 195     MachVtbl.ConsGetCh = ArmBoardBlock->ConsGetCh;
 196     MachVtbl.VideoClearScreen = ArmBoardBlock->VideoClearScreen;
 197     MachVtbl.VideoSetDisplayMode = ArmBoardBlock->VideoSetDisplayMode;
 198     MachVtbl.VideoGetDisplaySize = ArmBoardBlock->VideoGetDisplaySize;
 199     MachVtbl.VideoPutChar = ArmBoardBlock->VideoPutChar;
 200     MachVtbl.GetTime = ArmBoardBlock->GetTime;
 201
 202     /* Setup board-specific ARM routines */
 203     switch (ArmBoardBlock->BoardType)
 204     {
 205         /* Check for Feroceon-base boards */
 206         case MACH_TYPE_FEROCEON:
 207             TuiPrintf("Not implemented\n");
 208             while (TRUE);
 209             break;
 210
 211         /* Check for TI OMAP3 ZOOM-II MDK */
 212         case MACH_TYPE_OMAP_ZOOM2:
 213
 214             /* Setup the disk and file system buffers */
 215             gDiskReadBuffer = 0x81094000;
 216             gFileSysBuffer = 0x81094000;
 217             break;
 218
 219         /* Check for ARM Versatile PB boards */
 220         case MACH_TYPE_VERSATILE_PB:
 221
 222             /* Setup the disk and file system buffers */
 223             gDiskReadBuffer = 0x00090000;
 224             gFileSysBuffer = 0x00090000;
 225             break;
 226
 227         /* Check for TI OMAP3 Beagleboard */
 228         case MACH_TYPE_OMAP3_BEAGLE:
 229             TuiPrintf("Not implemented\n");
 230             while (TRUE);
 231             break;
 232
 233         default:
 234             ASSERT(FALSE);
 235     }
 236
 237     /* Setup generic ARM routines for all boards */
 238     MachVtbl.PrepareForReactOS = ArmPrepareForReactOS;
 239     MachVtbl.GetMemoryMap = ArmMemGetMemoryMap;
 240     MachVtbl.InitializeBootDevices = ArmInitializeBootDevices;
 241     MachVtbl.HwDetect = ArmHwDetect;
 242     MachVtbl.DiskGetBootPath = ArmDiskGetBootPath;
 243     MachVtbl.HwIdle = ArmHwIdle;
 244 }