reactos/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 extern ULONG reactos_disk_count;
  33 extern ARC_DISK_SIGNATURE reactos_arc_disk_info[];
  34 extern CHAR reactos_arc_strings[32][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 FrLdrCheckCpuCompatiblity(VOID)
  66 {
  67     /* Nothing for now */
  68 }
  69
  70 VOID
  71 ArmInit(IN PARM_BOARD_CONFIGURATION_BLOCK BootContext)
  72 {
  73     /* Remember the pointer */
  74     ArmBoardBlock = BootContext;
  75
  76     /* Let's make sure we understand the LLB */
  77     ASSERT(ArmBoardBlock->MajorVersion == ARM_BOARD_CONFIGURATION_MAJOR_VERSION);
  78     ASSERT(ArmBoardBlock->MinorVersion == ARM_BOARD_CONFIGURATION_MINOR_VERSION);
  79
  80     /* This should probably go away once we support more boards */
  81     ASSERT((ArmBoardBlock->BoardType == MACH_TYPE_FEROCEON) ||
  82            (ArmBoardBlock->BoardType == MACH_TYPE_VERSATILE_PB) ||
  83            (ArmBoardBlock->BoardType == MACH_TYPE_OMAP3_BEAGLE) ||
  84            (ArmBoardBlock->BoardType == MACH_TYPE_OMAP_ZOOM2));
  85
  86     /* Call FreeLDR's portable entrypoint with our command-line */
  87     BootMain(ArmBoardBlock->CommandLine);
  88 }
  89
  90 VOID
  91 ArmPrepareForReactOS(IN BOOLEAN Setup)
  92 {
  93     return;
  94 }
  95
  96 BOOLEAN
  97 ArmDiskGetBootPath(OUT PCHAR BootPath,
  98                    IN unsigned Size)
  99 {
 100     PCCH Path = "ramdisk(0)";
 101
 102     /* Make sure enough space exists */
 103     if (Size < sizeof(Path)) return FALSE;
 104
 105     /* On ARM platforms, the loader is always in RAM */
 106     strcpy(BootPath, Path);
 107     return TRUE;
 108 }
 109
 110 BOOLEAN
 111 ArmInitializeBootDevices(VOID)
 112 {
 113     /* Emulate old behavior */
 114     return (ArmHwDetect() != NULL);
 115 }
 116
 117 PCONFIGURATION_COMPONENT_DATA
 118 ArmHwDetect(VOID)
 119 {
 120     ARM_CACHE_REGISTER CacheReg;
 121
 122     /* Create the root node */
 123     if (ArmHwDetectRan++) return RootNode;
 124     FldrCreateSystemKey(&RootNode);
 125
 126     /*
 127      * TODO:
 128      * There's no such thing as "PnP" on embedded hardware.
 129      * The boot loader will send us a device tree, similar to ACPI
 130      * or OpenFirmware device trees, and we will convert it to ARC.
 131      */
 132
 133     /* Get cache information */
 134     CacheReg = KeArmCacheRegisterGet();
 135     FirstLevelDcacheSize = SizeBits[CacheReg.DSize];
 136     FirstLevelDcacheFillSize = LenBits[CacheReg.DLength];
 137     FirstLevelDcacheFillSize <<= 2;
 138     FirstLevelIcacheSize = SizeBits[CacheReg.ISize];
 139     FirstLevelIcacheFillSize = LenBits[CacheReg.ILength];
 140     FirstLevelIcacheFillSize <<= 2;
 141     SecondLevelDcacheSize =
 142     SecondLevelDcacheFillSize =
 143     SecondLevelIcacheSize =
 144     SecondLevelIcacheFillSize = 0;
 145
 146     /* Register RAMDISK Device */
 147     RamDiskInitialize();
 148
 149     /* Fill out the ARC disk block */
 150     reactos_arc_disk_info[reactos_disk_count].Signature = 0xBADAB00F;
 151     reactos_arc_disk_info[reactos_disk_count].CheckSum = 0xDEADBABE;
 152     strcpy(reactos_arc_strings[reactos_disk_count], "ramdisk(0)");
 153     reactos_arc_disk_info[reactos_disk_count].ArcName =
 154         reactos_arc_strings[reactos_disk_count];
 155     reactos_disk_count++;
 156     ASSERT(reactos_disk_count == 1);
 157
 158     /* Return the root node */
 159     return RootNode;
 160 }
 161
 162 FREELDR_MEMORY_DESCRIPTOR ArmMemoryMap[32];
 163
 164 PFREELDR_MEMORY_DESCRIPTOR
 165 ArmMemGetMemoryMap(OUT ULONG *MemoryMapSize)
 166 {
 167     ASSERT(ArmBoardBlock->MemoryMapEntryCount <= 32);
 168
 169     /* Return whatever the board returned to us (CS0 Base + Size and FLASH0) */
 170     for (i = 0; i < ArmBoardBlock->MemoryMapEntryCount; i++)
 171     {
 172         ArmMemoryMap[i].BasePage = ArmBoardBlock->MemoryMap[i].BaseAddress / PAGE_SIZE;
 173         ArmMemoryMap[i].PageCount = ArmBoardBlock->MemoryMap[i].Length / PAGE_SIZE;
 174         if (ArmBoardBlock->MemoryMap[i].Type == BiosMemoryUsable)
 175             ArmMemoryMap[i].MemoryType = MemoryFree;
 176         else
 177             ArmMemoryMap[i].MemoryType = MemoryFirmwarePermanent;
 178     }
 179
 180     return ArmBoardBlock->MemoryMapEntryCount;
 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 }