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
  35 ULONG SizeBits[] =
  36 {
  37     -1,      // INVALID
  38     -1,      // INVALID
  39     1 << 12, // 4KB
  40     1 << 13, // 8KB
  41     1 << 14, // 16KB
  42     1 << 15, // 32KB
  43     1 << 16, // 64KB
  44     1 << 17  // 128KB
  45 };
  46
  47 ULONG AssocBits[] =
  48 {
  49     -1,      // INVALID
  50     -1,      // INVALID
  51     4        // 4-way associative
  52 };
  53
  54 ULONG LenBits[] =
  55 {
  56     -1,      // INVALID
  57     -1,      // INVALID
  58     8        // 8 words per line (32 bytes)
  59 };
  60
  61 /* FUNCTIONS ******************************************************************/
  62
  63 VOID
  64 ArmInit(IN PARM_BOARD_CONFIGURATION_BLOCK BootContext)
  65 {
  66     /* Remember the pointer */
  67     ArmBoardBlock = BootContext;
  68
  69     /* Let's make sure we understand the LLB */
  70     ASSERT(ArmBoardBlock->MajorVersion == ARM_BOARD_CONFIGURATION_MAJOR_VERSION);
  71     ASSERT(ArmBoardBlock->MinorVersion == ARM_BOARD_CONFIGURATION_MINOR_VERSION);
  72
  73     /* This should probably go away once we support more boards */
  74     ASSERT((ArmBoardBlock->BoardType == MACH_TYPE_FEROCEON) ||
  75            (ArmBoardBlock->BoardType == MACH_TYPE_VERSATILE_PB) ||
  76            (ArmBoardBlock->BoardType == MACH_TYPE_OMAP3_BEAGLE) ||
  77            (ArmBoardBlock->BoardType == MACH_TYPE_OMAP_ZOOM2));
  78
  79     /* Call FreeLDR's portable entrypoint with our command-line */
  80     BootMain(ArmBoardBlock->CommandLine);
  81 }
  82
  83 VOID
  84 ArmPrepareForReactOS(IN BOOLEAN Setup)
  85 {
  86     return;
  87 }
  88
  89 BOOLEAN
  90 ArmDiskGetBootPath(OUT PCHAR BootPath,
  91                    IN unsigned Size)
  92 {
  93     PCCH Path = "ramdisk(0)";
  94
  95     /* Make sure enough space exists */
  96     if (Size < sizeof(Path)) return FALSE;
  97
  98     /* On ARM platforms, the loader is always in RAM */
  99     strcpy(BootPath, Path);
 100     return TRUE;
 101 }
 102
 103 BOOLEAN
 104 ArmInitializeBootDevices(VOID)
 105 {
 106     /* Emulate old behavior */
 107     return (ArmHwDetect() != NULL);
 108 }
 109
 110 PCONFIGURATION_COMPONENT_DATA
 111 ArmHwDetect(VOID)
 112 {
 113     ARM_CACHE_REGISTER CacheReg;
 114
 115     /* Create the root node */
 116     if (ArmHwDetectRan++) return RootNode;
 117     FldrCreateSystemKey(&RootNode);
 118
 119     /*
 120      * TODO:
 121      * There's no such thing as "PnP" on embedded hardware.
 122      * The boot loader will send us a device tree, similar to ACPI
 123      * or OpenFirmware device trees, and we will convert it to ARC.
 124      */
 125
 126     /* Get cache information */
 127     CacheReg = KeArmCacheRegisterGet();
 128     FirstLevelDcacheSize = SizeBits[CacheReg.DSize];
 129     FirstLevelDcacheFillSize = LenBits[CacheReg.DLength];
 130     FirstLevelDcacheFillSize <<= 2;
 131     FirstLevelIcacheSize = SizeBits[CacheReg.ISize];
 132     FirstLevelIcacheFillSize = LenBits[CacheReg.ILength];
 133     FirstLevelIcacheFillSize <<= 2;
 134     SecondLevelDcacheSize =
 135     SecondLevelDcacheFillSize =
 136     SecondLevelIcacheSize =
 137     SecondLevelIcacheFillSize = 0;
 138
 139     /* Register RAMDISK Device */
 140     RamDiskInitialize();
 141
 142     /* Fill out the ARC disk block */
 143     reactos_arc_disk_info.Signature = 0xBADAB00F;
 144     reactos_arc_disk_info.CheckSum = 0xDEADBABE;
 145     reactos_arc_disk_info.ArcName = "ramdisk(0)";
 146     reactos_disk_count = 1;
 147
 148     /* Return the root node */
 149     return RootNode;
 150 }
 151
 152 FREELDR_MEMORY_DESCRIPTOR ArmMemoryMap[32];
 153
 154 PFREELDR_MEMORY_DESCRIPTOR
 155 ArmMemGetMemoryMap(OUT ULONG *MemoryMapSize)
 156 {
 157     ASSERT(ArmBoardBlock->MemoryMapEntryCount <= 32);
 158
 159     /* Return whatever the board returned to us (CS0 Base + Size and FLASH0) */
 160     for (i = 0; i < ArmBoardBlock->MemoryMapEntryCount; i++)
 161     {
 162         ArmMemoryMap[i].BasePage = ArmBoardBlock->MemoryMap[i].BaseAddress / PAGE_SIZE;
 163         ArmMemoryMap[i].PageCount = ArmBoardBlock->MemoryMap[i].Length / PAGE_SIZE;
 164         if (ArmBoardBlock->MemoryMap[i].Type == BiosMemoryUsable)
 165             ArmMemoryMap[i].MemoryType = MemoryFree;
 166         else
 167             ArmMemoryMap[i].MemoryType = MemoryFirmwarePermanent;
 168     }
 169
 170     return ArmBoardBlock->MemoryMapEntryCount;
 171 }
 172
 173 VOID
 174 ArmHwIdle(VOID)
 175 {
 176     /* UNIMPLEMENTED */
 177 }
 178
 179 VOID
 180 MachInit(IN PCCH CommandLine)
 181 {
 182     /* Copy Machine Routines from Firmware Table */
 183     MachVtbl.ConsPutChar = ArmBoardBlock->ConsPutChar;
 184     MachVtbl.ConsKbHit = ArmBoardBlock->ConsKbHit;
 185     MachVtbl.ConsGetCh = ArmBoardBlock->ConsGetCh;
 186     MachVtbl.VideoClearScreen = ArmBoardBlock->VideoClearScreen;
 187     MachVtbl.VideoSetDisplayMode = ArmBoardBlock->VideoSetDisplayMode;
 188     MachVtbl.VideoGetDisplaySize = ArmBoardBlock->VideoGetDisplaySize;
 189     MachVtbl.VideoPutChar = ArmBoardBlock->VideoPutChar;
 190     MachVtbl.GetTime = ArmBoardBlock->GetTime;
 191
 192     /* Setup board-specific ARM routines */
 193     switch (ArmBoardBlock->BoardType)
 194     {
 195         /* Check for Feroceon-base boards */
 196         case MACH_TYPE_FEROCEON:
 197             TuiPrintf("Not implemented\n");
 198             while (TRUE);
 199             break;
 200
 201         /* Check for TI OMAP3 ZOOM-II MDK */
 202         case MACH_TYPE_OMAP_ZOOM2:
 203
 204             /* Setup the disk and file system buffers */
 205             gDiskReadBuffer = 0x81094000;
 206             gFileSysBuffer = 0x81094000;
 207             break;
 208
 209         /* Check for ARM Versatile PB boards */
 210         case MACH_TYPE_VERSATILE_PB:
 211
 212             /* Setup the disk and file system buffers */
 213             gDiskReadBuffer = 0x00090000;
 214             gFileSysBuffer = 0x00090000;
 215             break;
 216
 217         /* Check for TI OMAP3 Beagleboard */
 218         case MACH_TYPE_OMAP3_BEAGLE:
 219             TuiPrintf("Not implemented\n");
 220             while (TRUE);
 221             break;
 222
 223         default:
 224             ASSERT(FALSE);
 225     }
 226
 227     /* Setup generic ARM routines for all boards */
 228     MachVtbl.PrepareForReactOS = ArmPrepareForReactOS;
 229     MachVtbl.GetMemoryMap = ArmMemGetMemoryMap;
 230     MachVtbl.InitializeBootDevices = ArmInitializeBootDevices;
 231     MachVtbl.HwDetect = ArmHwDetect;
 232     MachVtbl.DiskGetBootPath = ArmDiskGetBootPath;
 233     MachVtbl.HwIdle = ArmHwIdle;
 234 }