- Define memory map structure for Versatile board/QEMU and send to OS Loader.

- Many hack removed.
- Better efficency use of memory layout.
- Region at 0x800000 now available for FreeLDR use to load kernel files.
- Implement simple ArmDiskNormalizeSystemPath so boot is allowed to happen.
- Use better stack address as defined in memory map.
- Now FreeLDR loads all files correctly from disk and is ready to jump to kernel. ARMv5 paging code must be rewritten before that can happen.


svn path=/trunk/; revision=45424

reactos/boot/armllb/boot.s

@@ -31,7 +31,7 @@
     ENTRY_END _start
 
 L_BootStackEnd:
-    .long 0x2000000
+    .long 0x00010000
         
 L_LlbStartup:
     .long LlbStartup

reactos/boot/armllb/envir.c

@@ -47,6 +47,14 @@ LlbEnvParseArguments(IN PATAG Arguments)
                 /* Save RAMDISK start and size */
                 LlbEnvRamDiskStart = Atag->u.InitRd2.Start;
                 LlbEnvRamDiskSize = Atag->u.InitRd2.Size;
+                
+                /* Make sure it's 16MB-aligned */
+                LlbEnvRamDiskSize = (LlbEnvRamDiskSize + (16 * 1024 * 1024) - 1) 
+                                    &~ ((16 * 1024 * 1024) - 1);
+                
+                /* The RAMDISK actually starts 16MB later */
+                LlbEnvRamDiskStart += 16 * 1024 * 1024;
+                LlbEnvRamDiskSize  -= 16 * 1024 * 1024;
                 break;
                 
             case ATAG_CMDLINE:

reactos/boot/armllb/hw/versatile/hwinfo.c

@@ -39,12 +39,63 @@ LlbHwGetSerialUart(VOID)
     return 0;
 }
 
+//
+// Versatile Memory Map
+//
+// 0x00000000 - 0x000000FF ARM Vectors                              [  1 KB]
+// 0x00000100 - 0x000001FF ATAG Structures                          [  1 KB]
+// 0x00000200 - 0x0000FFFF ARM STACK                                [ 62 KB]
+// 0x00010000 - 0x0001FFFF ARM LLB                                  [ 64 KB]
+// 0x00020000 - 0x0009FFFF ARM OS LOADER                            [512 KB]
+// 0x000A0000 - 0x007FFFFF OS LOADER FREE/UNUSED                    [7.3 MB]
+// 0x00800000 - 0x017FFFFF KERNEL, HAL, INITIAL DRIVER LOAD ADDR    [ 16 MB]
+// 0x01800000 - 0x037FFFFF RAM DISK                                 [ 32 MB]
+// 0x03800000 - 0x07FFFFFF FREE RAM                                 [ 72 MB]
+// 0x08000000 - 0x0FFFFFFF FREE RAM IF 256MB DEVICE                 [128 MB]
+// 0x10000000 - 0x1FFFFFFF MMIO DEVICES                             [256 MB]
+BIOS_MEMORY_MAP LlbHwVersaMemoryMap[] =
+{
+    {0x00000000, 0x00000100, BiosMemoryReserved, 0},
+    {0x00000100, 0x00000100, BiosMemoryBootStrap, 0},
+    {0x00000200, 0x0000FE00, BiosMemoryBootStrap, 0},
+    {0x00010000, 0x00010000, BiosMemoryBootStrap, 0},
+    {0x00020000, 0x00080000, BiosMemoryBootLoader, 0},
+    {0x00080000, 0x01000000, BiosMemoryUsable,   0},
+    {0x01800000, 0x02000000, BiosMemoryReserved, 0},
+    {0x10000000, 0x10000000, BiosMemoryReserved, 0},
+    {0, 0, 0, 0}
+};
+
 VOID
 NTAPI
 LlbHwBuildMemoryMap(IN PBIOS_MEMORY_MAP MemoryMap)
 {
-    /* Mark MMIO space as reserved */
+    PBIOS_MEMORY_MAP MapEntry;
-    LlbAllocateMemoryEntry(BiosMemoryReserved, 0x10000000, 128 * 1024 * 1024);
+    ULONG Base, Size, FsBase, FsSize;
+    
+    /* Parse hardware memory map */
+    MapEntry = LlbHwVersaMemoryMap;
+    while (MapEntry->Length)
+    {
+        /* Add this entry */
+        LlbAllocateMemoryEntry(MapEntry->Type, MapEntry->BaseAddress, MapEntry->Length);
+        
+        /* Move to the next one */
+        MapEntry++;
+    }
+    
+    /* Query memory and RAMDISK information */
+    LlbEnvGetMemoryInformation(&Base, &Size);
+    LlbEnvGetRamDiskInformation(&FsBase, &FsSize);
+    
+    /* Add-in the size of the ramdisk */
+    Base = FsBase + FsSize;
+    
+    /* Subtract size of ramdisk and anything else before it */
+    Size -= Base;
+    
+    /* Allocate an entry for it */
+    LlbAllocateMemoryEntry(BiosMemoryUsable, Base, Size);
 }
 
 ULONG

reactos/boot/armllb/hw/versatile/hwinit.c

@@ -33,14 +33,11 @@ LlbHwLoadOsLoaderFromRam(VOID)
     PCHAR Offset;
     CHAR CommandLine[64];
     
-    /* On versatile, the NAND image is loaded as the RAMDISK */
+    /* On versatile we load the RAMDISK with initrd */
-    LlbEnvGetRamDiskInformation(&Base, &Size);
+    LlbEnvGetRamDiskInformation(&RootFs, &Size);
     
-    /* The LLB is first, which we already have, so skip it */
+    /* The OS Loader is at 0x20000, always */
-    Base += 0x10000; // 64 KB (see nandflash)
+    Base = 0x20000;
-    
-    /* The OS loader is next, followed by the root file system */
-    RootFs = Base + 0x80000; // 512 KB (see nandflash)
     
     /* Read image offset */
     Offset = LlbEnvRead("rdoffset");

reactos/boot/armllb/os/loader.c

@@ -93,22 +93,9 @@ VOID
 NTAPI
 LlbBuildMemoryMap(VOID)
 {
-    ULONG Base, Size;
-    
     /* Zero out the memory map */
     memset(MemoryMap, 0, sizeof(MemoryMap));
 
-    /* Query memory information */
-    LlbEnvGetMemoryInformation(&Base, &Size);
-    
-    /* Don't use memory that the RAMDISK is using */
-    /* HACK HACK */
-    Base += 32 * 1024 * 1024;
-    Size -= 32 * 1024 * 1024;
-    
-    /* Allocate an entry for it */
-    LlbAllocateMemoryEntry(BiosMemoryUsable, Base, Size);
-
     /* Call the hardware-specific function for hardware-defined regions */
     LlbHwBuildMemoryMap(MemoryMap);
 }

reactos/boot/freeldr/freeldr/arcemul/mm.c

@@ -32,9 +32,7 @@ static const MEMORY_DESCRIPTOR_INT MemoryDescriptors[] =
     { { MemoryFirmwarePermanent, 0xA0, 0x60 }, 6, }, // ROM / Video
     { { MemorySpecialMemory, 0xFFF, 1 }, 7, }, // unusable memory
 #elif __arm__ // This needs to be done per-platform specific way
-    { { MemoryLoadedProgram, 0x80000, 32 }, 0, }, // X-Loader + OmapLdr
+
-    { { MemoryLoadedProgram, 0x81000, 128 }, 1, }, // FreeLDR
-    { { MemoryFirmwareTemporary, 0x80500, 4096 }, 2, }, // Video Buffer
 #endif
 };
 MEMORY_DESCRIPTOR*

reactos/boot/freeldr/freeldr/arch/arm/loader.c

@@ -1036,6 +1036,9 @@ ArmPrepareForReactOS(IN BOOLEAN Setup)
     PULONG Buffer;
     PWCHAR ArmModuleName;
 
+    TuiPrintf("About to prepare for kernel boot\n");
+    while (TRUE);
+
     //
     // Allocate the ARM Shared Heap
     //
@@ -1607,6 +1610,7 @@ FrLdrStartup(IN ULONG Magic)
     //
     // Initialize the page directory
     //
+    TuiPrintf("About to jump into kernel\n");
     while (TRUE);
     ArmSetupPageDirectory();
 

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

@@ -73,8 +73,8 @@ BOOLEAN
 ArmDiskNormalizeSystemPath(IN OUT PCHAR SystemPath,
                            IN unsigned Size)
 {
-    TuiPrintf("Called: %s\n", SystemPath);
+    /* Only RAMDISK supported for now */
-    while (TRUE);
+    if (!strstr(SystemPath, "ramdisk(0)")) return FALSE;
     return TRUE;
 }
 

reactos/boot/freeldr/freeldr/freeldr.rbuild

@@ -38,7 +38,7 @@
 			        <linkerflag>-Wl,--image-base=0x80FFF000</linkerflag>
 			    </if>
                 <if property="SARCH" value="versatile">
-			        <linkerflag>-Wl,--image-base=0x0080F000</linkerflag>
+			        <linkerflag>-Wl,--image-base=0x0001F000</linkerflag>
 			    </if>				
 			</group>
 		</module>