[arty] 23835: Some intermediate work. We start loading the kernel now. Working on early boot memory mapping. We'll rely heavily on open firmware until we're on our own page table.

Author: arty
Date: Thu Aug 31 12:01:30 2006
New Revision: 23835
URL: http://svn.reactos.org/svn/reactos?rev=23835&view=rev
Log:
Some intermediate work.  We start loading the kernel now.
Working on early boot memory mapping.  We'll rely heavily on open
firmware until we're on our own page table.
Modified:
    branches/powerpc/reactos/boot/freeldr/freeldr/arch/powerpc/mach.c
    branches/powerpc/reactos/boot/freeldr/freeldr/arch/powerpc/mboot.c
Modified: branches/powerpc/reactos/boot/freeldr/freeldr/arch/powerpc/mach.c
URL:
http://svn.reactos.org/svn/reactos/branches/powerpc/reactos/boot/freeldr/fr…
==============================================================================
--- branches/powerpc/reactos/boot/freeldr/freeldr/arch/powerpc/mach.c (original)
+++ branches/powerpc/reactos/boot/freeldr/freeldr/arch/powerpc/mach.c Thu Aug 31 12:01:30
2006
@@ -25,7 +25,7 @@
 extern void BootMain( char * );
 extern char *GetFreeLoaderVersionString();
 of_proxy ofproxy;
-void *PageDirectoryStart, *PageDirectoryEnd;
+void *PageDirectoryStart, *PageDirectoryEnd, *mem_base = 0;
 static int chosen_package, stdin_handle, part_handle = -1;
 BOOLEAN AcpiPresent = FALSE;
 char BootPath[0x100] = { 0 }, BootPart[0x100] = { 0 }, CmdLine[0x100] = { 0 };
@@ -95,7 +95,7 @@
 }
 BOOLEAN PpcConsKbHit() {
-    return TRUE;
+    return FALSE;
 }
 int PpcConsGetCh() {
@@ -193,6 +193,14 @@
     printf("PpcGetMemoryMap(%d)\n", MaxMemoryMapSize);
+    if( mem_base ) {
+       BiosMemoryMap[0].Type = MEMTYPE_USABLE;
+       BiosMemoryMap[0].BaseAddress = (ULONG)mem_base;
+       BiosMemoryMap[0].Length = TOTAL_HEAP_NEEDED;
+       printf("[cached] returning 1 element\n");
+       return 1;
+    }
+
     ofw_getprop(chosen_package, "memory",
                (char *)&memhandle, sizeof(memhandle));
     ofw_getprop(chosen_package, "mmu",
@@ -207,8 +215,10 @@
     for( i = 0; i < returned / sizeof(int) && !num_mem; i += 2 ) {
        BiosMemoryMap[num_mem].Type = MEMTYPE_USABLE;
        BiosMemoryMap[num_mem].BaseAddress = memdata[i];
+       mem_base = (void *)memdata[i];
        BiosMemoryMap[num_mem].Length = memdata[i+1];
-       if( BiosMemoryMap[num_mem].Length >= TOTAL_HEAP_NEEDED ) {
+       if( BiosMemoryMap[num_mem].Length >= TOTAL_HEAP_NEEDED &&
+           total < TOTAL_HEAP_NEEDED ) {
            BiosMemoryMap[num_mem].Length = TOTAL_HEAP_NEEDED;
            ofw_claim(BiosMemoryMap[num_mem].BaseAddress,
                      BiosMemoryMap[num_mem].Length, 0x1000); /* claim it */
@@ -248,7 +258,14 @@
                              PULONGLONG StartSector,
                              PULONGLONG SectorCount,
                              int *FsType ) {
-    return FALSE;
+    char *remain = strchr(SystemPath, '\\');
+    if( remain ) {
+       strcpy( RemainingPath, remain+1 );
+    } else {
+       RemainingPath[0] = 0;
+    }
+    *Device = 0;
+    return PpcDiskGetBootVolume(DriveNumber, StartSector, SectorCount, FsType);
 }
 BOOLEAN PpcDiskGetBootPath( char *OutBootPath, unsigned Size ) {
@@ -318,6 +335,44 @@
 VOID PpcHwDetect() {
     printf("PpcHwDetect\n");
+}
+
+BOOLEAN PpcDiskNormalizeSystemPath(char *SystemPath, unsigned Size) {
+       CHAR BootPath[256];
+       ULONG PartitionNumber;
+       ULONG DriveNumber;
+       PARTITION_TABLE_ENTRY PartEntry;
+       char *p;
+
+       if (!DissectArcPath(SystemPath, BootPath, &DriveNumber, &PartitionNumber))
+       {
+               return FALSE;
+       }
+
+       if (0 != PartitionNumber)
+       {
+               return TRUE;
+       }
+
+       if (! DiskGetActivePartitionEntry(DriveNumber,
+                                         &PartEntry,
+                                         &PartitionNumber) ||
+           PartitionNumber < 1 || 9 < PartitionNumber)
+       {
+               return FALSE;
+       }
+
+       p = SystemPath;
+       while ('\0' != *p && 0 != _strnicmp(p, "partition(",
10)) {
+               p++;
+       }
+       p = strchr(p, ')');
+       if (NULL == p || '0' != *(p - 1)) {
+               return FALSE;
+       }
+       *(p - 1) = '0' + PartitionNumber;
+
+       return TRUE;
 }
 typedef unsigned int uint32_t;
@@ -368,6 +423,7 @@
     MachVtbl.GetMemoryMap = PpcGetMemoryMap;
+    MachVtbl.DiskNormalizeSystemPath = PpcDiskNormalizeSystemPath;
     MachVtbl.DiskGetBootVolume = PpcDiskGetBootVolume;
     MachVtbl.DiskGetSystemVolume = PpcDiskGetSystemVolume;
     MachVtbl.DiskGetBootPath = PpcDiskGetBootPath;
Modified: branches/powerpc/reactos/boot/freeldr/freeldr/arch/powerpc/mboot.c
URL:
http://svn.reactos.org/svn/reactos/branches/powerpc/reactos/boot/freeldr/fr…
==============================================================================
--- branches/powerpc/reactos/boot/freeldr/freeldr/arch/powerpc/mboot.c (original)
+++ branches/powerpc/reactos/boot/freeldr/freeldr/arch/powerpc/mboot.c Thu Aug 31 12:01:30
2006
@@ -1,59 +1,68 @@
 /*
- * COPYRIGHT:       See COPYING in the top level directory
- * PROJECT:         Freeloader
- * FILE:            boot/freeldr/freeldr/multiboot.c
- * PURPOSE:         ReactOS Loader
- * PROGRAMMERS:     Alex Ionescu (alex(a)relsoft.net)
+ *  FreeLoader
+ *  Copyright (C) 1998-2003  Brian Palmer  &lt;brianp(a)sginet.com&gt;
+ *  Copyright (C) 2005       Alex Ionescu  &lt;alex(a)relsoft.net&gt;
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 #include <freeldr.h>
-#include <internal/powerpc/ke.h>
+
+#include <of_call.h>
 #define NDEBUG
 #include <debug.h>
-int xstrnicmp( const char *a, const char *b, int n ) {
-       while( n-- && *a && (*a++ == *b++) );
-       return *a - *b;
-}
-
-/* Base Addres of Kernel in Physical Memory */
-#define KERNEL_BASE_PHYS 0x200000
+static PVOID KernelMemory = 0;
 /* Bits to shift to convert a Virtual Address into an Offset in the Page Table */
 #define PFN_SHIFT 12
 /* Bits to shift to convert a Virtual Address into an Offset in the Page Directory */
-#define PDE_SHIFT 20
+#define PDE_SHIFT 22
 #define PDE_SHIFT_PAE 18
-
+
 /* Converts a Relative Address read from the Kernel into a Physical Address */
-#define RaToPa(p) \
-    (ULONG_PTR)((ULONG_PTR)p + KERNEL_BASE_PHYS)
-
+ULONG RaToPa(ULONG p) {
+    return ofw_virt2phys((ULONG)(p + KernelMemory), 1);
+}
+
 /* Converts a Phsyical Address Pointer into a Page Frame Number */
 #define PaPtrToPfn(p) \
     (((ULONG_PTR)&p) >> PFN_SHIFT)
-
+
 /* Converts a Phsyical Address into a Page Frame Number */
 #define PaToPfn(p) \
     ((p) >> PFN_SHIFT)
-#define STARTUP_BASE                0xF0000000
-#define HYPERSPACE_BASE             0xF0800000
+#define STARTUP_BASE                0xC0000000
+#define HYPERSPACE_BASE             0xC0400000
+#define HYPERSPACE_PAE_BASE         0xC0800000
 #define APIC_BASE                   0xFEC00000
 #define KPCR_BASE                   0xFF000000
-
+
 #define LowMemPageTableIndex        0
-#define StartupPageTableIndex       (STARTUP_BASE >> 20)    /
sizeof(HARDWARE_PTE_X86)
-#define HyperspacePageTableIndex    (HYPERSPACE_BASE >> 20) /
sizeof(HARDWARE_PTE_X86)
-#define KpcrPageTableIndex          (KPCR_BASE >> 20)       /
sizeof(HARDWARE_PTE_X86)
-#define ApicPageTableIndex          (APIC_BASE >> 20)       /
sizeof(HARDWARE_PTE_X86)
+#define StartupPageTableIndex       (STARTUP_BASE >> 22)
+#define HyperspacePageTableIndex    (HYPERSPACE_BASE >> 22)
+#define KpcrPageTableIndex          (KPCR_BASE >> 22)
+#define ApicPageTableIndex          (APIC_BASE >> 22)
 #define LowMemPageTableIndexPae     0
 #define StartupPageTableIndexPae    (STARTUP_BASE >> 21)
-#define HyperspacePageTableIndexPae (HYPERSPACE_BASE >> 21)
+#define HyperspacePageTableIndexPae (HYPERSPACE_PAE_BASE >> 21)
 #define KpcrPageTableIndexPae       (KPCR_BASE >> 21)
 #define ApicPageTableIndexPae       (APIC_BASE >> 21)
@@ -64,7 +73,7 @@
 ULONG_PTR NextModuleBase = 0;
 /* Currently Opened Module */
-VOID *CurrentModule = NULL;
+PLOADER_MODULE CurrentModule = NULL;
 /* Unrelocated Kernel Base in Virtual Memory */
 ULONG_PTR KernelBase;
@@ -78,7 +87,7 @@
 /* FUNCTIONS *****************************************************************/
 /*++
- * FrLdrStartup
+ * FrLdrStartup
  * INTERNAL
  *
  *     Prepares the system for loading the Kernel.
@@ -96,21 +105,34 @@
 VOID
 NTAPI
 FrLdrStartup(ULONG Magic)
-{
-#if 0
-    /* Disable Interrupts */
-    KeArchDisableInterrupts();
-
-    /* Re-initalize EFLAGS */
-    KeArchEraseFlags();
-
-    /* Initialize the page directory */
-    FrLdrSetupPageDirectory();
-#endif
+{
 }
 /*++
- * FrLdrGetKernelBase
+ * FrLdrSetupPae
+ * INTERNAL
+ *
+ *     Configures PAE on a MP System, and sets the PDBR if it's supported, or if
+ *     the system is UP.
+ *
+ * Params:
+ *     Magic - Multiboot Magic
+ *
+ * Returns:
+ *     None.
+ *
+ * Remarks:
+ *     None.
+ *
+ *--*/
+VOID
+FASTCALL
+FrLdrSetupPae(ULONG Magic)
+{
+}
+
+/*++
+ * FrLdrGetKernelBase
  * INTERNAL
  *
  *     Gets the Kernel Base to use.
@@ -125,36 +147,59 @@
  *     will be used by the Kernel.
  *
  *--*/
-VOID
+static VOID
 FASTCALL
 FrLdrGetKernelBase(VOID)
 {
     PCHAR p;
-
+
+    /* Set KernelBase */
+    LoaderBlock.KernelBase = KernelBase;
+
     /* Read Command Line */
     p = (PCHAR)LoaderBlock.CommandLine;
     while ((p = strchr(p, '/')) != NULL) {
-
+
         /* Find "/3GB" */
-        if (!xstrnicmp(p + 1, "3GB", 3)) {
-
+        if (!_strnicmp(p + 1, "3GB", 3)) {
+
             /* Make sure there's nothing following it */
             if (p[4] == ' ' || p[4] == 0) {
-
+
                 /* Use 3GB */
-                KernelBase = 0xC0000000;
+                KernelBase = 0xE0000000;
+                LoaderBlock.KernelBase = 0xC0000000;
             }
         }
         p++;
     }
-
-    /* Set KernelBase */
-    LoaderBlock.KernelBase = KernelBase;
 }
 /*++
- * FrLdrSetupPageDirectory
+ * FrLdrGetPaeMode
+ * INTERNAL
+ *
+ *     Determines whether PAE mode shoudl be enabled or not.
+ *
+ * Params:
+ *     None.
+ *
+ * Returns:
+ *     None.
+ *
+ * Remarks:
+ *     None.
+ *
+ *--*/
+VOID
+FASTCALL
+FrLdrGetPaeMode(VOID)
+{
+}
+
+/*++
+ * FrLdrSetupPageDirectory
  * INTERNAL
  *
  *     Sets up the ReactOS Startup Page Directory.
@@ -174,199 +219,10 @@
 FASTCALL
 FrLdrSetupPageDirectory(VOID)
 {
-#if 0
-    PPAGE_DIRECTORY_X86 PageDir;
-    PPAGE_DIRECTORY_TABLE_X64 PageDirTablePae;
-    PPAGE_DIRECTORY_X64 PageDirPae;
-    ULONG KernelPageTableIndex;
-    ULONG i;
-
-    if (PaeModeEnabled) {
-
-        /* Get the Kernel Table Index */
-        KernelPageTableIndex = (KernelBase >> 21);
-
-        /* Get the Startup Page Directory Table */
-        PageDirTablePae = (PPAGE_DIRECTORY_TABLE_X64)&startup_pagedirectorytable_pae;
-
-        /* Get the Startup Page Directory */
-        PageDirPae = (PPAGE_DIRECTORY_X64)&startup_pagedirectory_pae;
-
-        /* Set the Startup page directory table */
-        for (i = 0; i < 4; i++)
-        {
-            PageDirTablePae->Pde[i].Valid = 1;
-            PageDirTablePae->Pde[i].PageFrameNumber =
PaPtrToPfn(startup_pagedirectory_pae) + i;
-        }
-
-        /* Set up the Low Memory PDE */
-        for (i = 0; i < 2; i++)
-        {
-            PageDirPae->Pde[LowMemPageTableIndexPae + i].Valid = 1;
-            PageDirPae->Pde[LowMemPageTableIndexPae + i].Write = 1;
-            PageDirPae->Pde[LowMemPageTableIndexPae + i].PageFrameNumber =
PaPtrToPfn(lowmem_pagetable_pae) + i;
-        }
-
-        /* Set up the Kernel PDEs */
-        for (i = 0; i < 3; i++)
-        {
-            PageDirPae->Pde[KernelPageTableIndex + i].Valid = 1;
-            PageDirPae->Pde[KernelPageTableIndex + i].Write = 1;
-            PageDirPae->Pde[KernelPageTableIndex + i].PageFrameNumber =
PaPtrToPfn(kernel_pagetable_pae) + i;
-        }
-
-        /* Set up the Startup PDE */
-        for (i = 0; i < 4; i++)
-        {
-            PageDirPae->Pde[StartupPageTableIndexPae + i].Valid = 1;
-            PageDirPae->Pde[StartupPageTableIndexPae + i].Write = 1;
-            PageDirPae->Pde[StartupPageTableIndexPae + i].PageFrameNumber =
PaPtrToPfn(startup_pagedirectory_pae) + i;
-        }
-
-        /* Set up the Hyperspace PDE */
-        for (i = 0; i < 2; i++)
-        {
-            PageDirPae->Pde[HyperspacePageTableIndexPae + i].Valid = 1;
-            PageDirPae->Pde[HyperspacePageTableIndexPae + i].Write = 1;
-            PageDirPae->Pde[HyperspacePageTableIndexPae + i].PageFrameNumber =
PaPtrToPfn(hyperspace_pagetable_pae) + i;
-        }
-
-        /* Set up the Apic PDE */
-        for (i = 0; i < 2; i++)
-        {
-            PageDirPae->Pde[ApicPageTableIndexPae + i].Valid = 1;
-            PageDirPae->Pde[ApicPageTableIndexPae + i].Write = 1;
-            PageDirPae->Pde[ApicPageTableIndexPae + i].PageFrameNumber =
PaPtrToPfn(apic_pagetable_pae) + i;
-        }
-
-        /* Set up the KPCR PDE */
-        PageDirPae->Pde[KpcrPageTableIndexPae].Valid = 1;
-        PageDirPae->Pde[KpcrPageTableIndexPae].Write = 1;
-        PageDirPae->Pde[KpcrPageTableIndexPae].PageFrameNumber =
PaPtrToPfn(kpcr_pagetable_pae);
-
-        /* Set up Low Memory PTEs */
-        PageDirPae = (PPAGE_DIRECTORY_X64)&lowmem_pagetable_pae;
-        for (i=0; i<1024; i++) {
-
-            PageDirPae->Pde[i].Valid = 1;
-            PageDirPae->Pde[i].Write = 1;
-            PageDirPae->Pde[i].Owner = 1;
-            PageDirPae->Pde[i].PageFrameNumber = i;
-        }
-
-        /* Set up Kernel PTEs */
-        PageDirPae = (PPAGE_DIRECTORY_X64)&kernel_pagetable_pae;
-        for (i=0; i<1536; i++) {
-
-            PageDirPae->Pde[i].Valid = 1;
-            PageDirPae->Pde[i].Write = 1;
-            PageDirPae->Pde[i].PageFrameNumber = PaToPfn(KERNEL_BASE_PHYS) + i;
-        }
-
-        /* Set up APIC PTEs */
-        PageDirPae = (PPAGE_DIRECTORY_X64)&apic_pagetable_pae;
-        PageDirPae->Pde[0].Valid = 1;
-        PageDirPae->Pde[0].Write = 1;
-        PageDirPae->Pde[0].CacheDisable = 1;
-        PageDirPae->Pde[0].WriteThrough = 1;
-        PageDirPae->Pde[0].PageFrameNumber = PaToPfn(APIC_BASE);
-        PageDirPae->Pde[0x200].Valid = 1;
-        PageDirPae->Pde[0x200].Write = 1;
-        PageDirPae->Pde[0x200].CacheDisable = 1;
-        PageDirPae->Pde[0x200].WriteThrough = 1;
-        PageDirPae->Pde[0x200].PageFrameNumber = PaToPfn(APIC_BASE +
KERNEL_BASE_PHYS);
-
-        /* Set up KPCR PTEs */
-        PageDirPae = (PPAGE_DIRECTORY_X64)&kpcr_pagetable_pae;
-        PageDirPae->Pde[0].Valid = 1;
-        PageDirPae->Pde[0].Write = 1;
-        PageDirPae->Pde[0].PageFrameNumber = 1;
-
-    } else {
-
-        /* Get the Kernel Table Index */
-        KernelPageTableIndex = (KernelBase >> PDE_SHIFT) /
sizeof(HARDWARE_PTE_X86);
-
-        /* Get the Startup Page Directory */
-        PageDir = (PPAGE_DIRECTORY_X86)&startup_pagedirectory;
-
-        /* Set up the Low Memory PDE */
-        PageDir->Pde[LowMemPageTableIndex].Valid = 1;
-        PageDir->Pde[LowMemPageTableIndex].Write = 1;
-        PageDir->Pde[LowMemPageTableIndex].PageFrameNumber =
PaPtrToPfn(lowmem_pagetable);
-
-        /* Set up the Kernel PDEs */
-        PageDir->Pde[KernelPageTableIndex].Valid = 1;
-        PageDir->Pde[KernelPageTableIndex].Write = 1;
-        PageDir->Pde[KernelPageTableIndex].PageFrameNumber =
PaPtrToPfn(kernel_pagetable);
-        PageDir->Pde[KernelPageTableIndex + 1].Valid = 1;
-        PageDir->Pde[KernelPageTableIndex + 1].Write = 1;
-        PageDir->Pde[KernelPageTableIndex + 1].PageFrameNumber =
PaPtrToPfn(kernel_pagetable + 4096);
-
-        /* Set up the Startup PDE */
-        PageDir->Pde[StartupPageTableIndex].Valid = 1;
-        PageDir->Pde[StartupPageTableIndex].Write = 1;
-        PageDir->Pde[StartupPageTableIndex].PageFrameNumber =
PaPtrToPfn(startup_pagedirectory);
-
-        /* Set up the Hyperspace PDE */
-        PageDir->Pde[HyperspacePageTableIndex].Valid = 1;
-        PageDir->Pde[HyperspacePageTableIndex].Write = 1;
-        PageDir->Pde[HyperspacePageTableIndex].PageFrameNumber =
PaPtrToPfn(hyperspace_pagetable);
-
-        /* Set up the Apic PDE */
-        PageDir->Pde[ApicPageTableIndex].Valid = 1;
-        PageDir->Pde[ApicPageTableIndex].Write = 1;
-        PageDir->Pde[ApicPageTableIndex].PageFrameNumber = PaPtrToPfn(apic_pagetable);
-
-        /* Set up the KPCR PDE */
-        PageDir->Pde[KpcrPageTableIndex].Valid = 1;
-        PageDir->Pde[KpcrPageTableIndex].Write = 1;
-        PageDir->Pde[KpcrPageTableIndex].PageFrameNumber = PaPtrToPfn(kpcr_pagetable);
-
-        /* Set up Low Memory PTEs */
-        PageDir = (PPAGE_DIRECTORY_X86)&lowmem_pagetable;
-        for (i=0; i<1024; i++) {
-
-            PageDir->Pde[i].Valid = 1;
-            PageDir->Pde[i].Write = 1;
-            PageDir->Pde[i].Owner = 1;
-            PageDir->Pde[i].PageFrameNumber = PaToPfn(i * PAGE_SIZE);
-        }
-
-        /* Set up Kernel PTEs */
-        PageDir = (PPAGE_DIRECTORY_X86)&kernel_pagetable;
-        for (i=0; i<1536; i++) {
-
-            PageDir->Pde[i].Valid = 1;
-            PageDir->Pde[i].Write = 1;
-            PageDir->Pde[i].PageFrameNumber = PaToPfn(KERNEL_BASE_PHYS + i *
PAGE_SIZE);
-        }
-
-        /* Set up APIC PTEs */
-        PageDir = (PPAGE_DIRECTORY_X86)&apic_pagetable;
-        PageDir->Pde[0].Valid = 1;
-        PageDir->Pde[0].Write = 1;
-        PageDir->Pde[0].CacheDisable = 1;
-        PageDir->Pde[0].WriteThrough = 1;
-        PageDir->Pde[0].PageFrameNumber = PaToPfn(APIC_BASE);
-        PageDir->Pde[0x200].Valid = 1;
-        PageDir->Pde[0x200].Write = 1;
-        PageDir->Pde[0x200].CacheDisable = 1;
-        PageDir->Pde[0x200].WriteThrough = 1;
-        PageDir->Pde[0x200].PageFrameNumber = PaToPfn(APIC_BASE + KERNEL_BASE_PHYS);
-
-        /* Set up KPCR PTEs */
-        PageDir = (PPAGE_DIRECTORY_X86)&kpcr_pagetable;
-        PageDir->Pde[0].Valid = 1;
-        PageDir->Pde[0].Write = 1;
-        PageDir->Pde[0].PageFrameNumber = 1;
-    }
-    return;
-#endif
 }
 /*++
- * FrLdrMapKernel
+ * FrLdrMapKernel
  * INTERNAL
  *
  *     Maps the Kernel into memory, does PE Section Mapping, initalizes the
@@ -386,7 +242,6 @@
 NTAPI
 FrLdrMapKernel(FILE *KernelImage)
 {
-#if 0
     PIMAGE_DOS_HEADER ImageHeader;
     PIMAGE_NT_HEADERS NtHeader;
     PIMAGE_SECTION_HEADER Section;
@@ -395,7 +250,7 @@
     ULONG_PTR SourceSection;
     ULONG_PTR TargetSection;
     ULONG SectionSize;
-    LONG i;
+    INT i;
     PIMAGE_DATA_DIRECTORY RelocationDDir;
     PIMAGE_BASE_RELOCATION RelocationDir, RelocationEnd;
     ULONG Count;
@@ -407,10 +262,10 @@
     /* Allocate 1024 bytes for PE Header */
     ImageHeader = (PIMAGE_DOS_HEADER)MmAllocateMemory(1024);
-
+
     /* Make sure it was succesful */
     if (ImageHeader == NULL) {
-
+
         return FALSE;
     }
@@ -424,94 +279,97 @@
     /* Now read the MZ header to get the offset to the PE Header */
     NtHeader = (PIMAGE_NT_HEADERS)((PCHAR)ImageHeader + ImageHeader->e_lfanew);
-
+
     /* Get Kernel Base */
-    KernelBase = NtHeader->OptionalHeader.ImageBase;
+    KernelBase = NtHeader->OptionalHeader.ImageBase;
     FrLdrGetKernelBase();
-
+
+    printf("About to do RaToPa(%x)\n",
+          NtHeader->OptionalHeader.AddressOfEntryPoint);
     /* Save Entrypoint */
     KernelEntry = RaToPa(NtHeader->OptionalHeader.AddressOfEntryPoint);
-
+    printf("RaToPa -> %x\n", KernelEntry);
+
     /* Save the Image Size */
     ImageSize = NtHeader->OptionalHeader.SizeOfImage;
-
+
     /* Free the Header */
     MmFreeMemory(ImageHeader);
     /* Set the file pointer to zero */
     FsSetFilePointer(KernelImage, 0);
+    /* Allocate kernel memory */
+    KernelMemory = MmAllocateMemory(ImageSize);
+
     /* Load the file image */
-    FsReadFile(KernelImage, ImageSize, NULL, (PVOID)KERNEL_BASE_PHYS);
-
+    FsReadFile(KernelImage, ImageSize, NULL, KernelMemory);
+
     /* Reload the NT Header */
-    NtHeader = (PIMAGE_NT_HEADERS)((PCHAR)KERNEL_BASE_PHYS + ImageHeader->e_lfanew);
-
+    NtHeader = (PIMAGE_NT_HEADERS)((PCHAR)KernelMemory + ImageHeader->e_lfanew);
+
     /* Load the first section */
     Section = IMAGE_FIRST_SECTION(NtHeader);
     SectionCount = NtHeader->FileHeader.NumberOfSections - 1;
-
+
     /* Now go to the last section */
     Section += SectionCount;
-
-    /* Walk each section backwards */
-    for (i=SectionCount; i >= 0; i--, Section--) {
-
-        /* Get the disk location and the memory location, and the size */
+
+    /* Walk each section backwards */
+    for (i=(INT)SectionCount; i >= 0; i--, Section--) {
+
+        /* Get the disk location and the memory location, and the size */
         SourceSection = RaToPa(Section->PointerToRawData);
         TargetSection = RaToPa(Section->VirtualAddress);
         SectionSize = Section->SizeOfRawData;
-
+
         /* If the section is already mapped correctly, go to the next */
         if (SourceSection == TargetSection) continue;
-
+
         /* Load it into memory */
         memmove((PVOID)TargetSection, (PVOID)SourceSection, SectionSize);
-
+
         /* Check for unitilizated data */
         if (Section->SizeOfRawData < Section->Misc.VirtualSize) {
-
+
             /* Zero it out */
-            memset((PVOID)RaToPa(Section->VirtualAddress + Section->SizeOfRawData),
+            memset((PVOID)RaToPa(Section->VirtualAddress + Section->SizeOfRawData),
                    0,
                    Section->Misc.VirtualSize - Section->SizeOfRawData);
         }
     }
-
+
     /* Get the Relocation Data Directory */
     RelocationDDir =
&NtHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
-
+
     /* Get the Relocation Section Start and End*/
-    RelocationDir = (PIMAGE_BASE_RELOCATION)(KERNEL_BASE_PHYS +
RelocationDDir->VirtualAddress);
+    RelocationDir = (PIMAGE_BASE_RELOCATION)(KernelMemory +
RelocationDDir->VirtualAddress);
     RelocationEnd = (PIMAGE_BASE_RELOCATION)((ULONG_PTR)RelocationDir +
RelocationDDir->Size);
-
+
     /* Calculate Difference between Real Base and Compiled Base*/
-    Delta = KernelBase - NtHeader->OptionalHeader.ImageBase;;
-
+    Delta = KernelBase - NtHeader->OptionalHeader.ImageBase;
+
     /* Determine how far we shoudl relocate */
-    MaxAddress = KERNEL_BASE_PHYS + ImageSize;
-
+    MaxAddress = (ULONG)KernelMemory + ImageSize;
+
     /* Relocate until we've processed all the blocks */
     while (RelocationDir < RelocationEnd && RelocationDir->SizeOfBlock >
0) {
-
+
         /* See how many Relocation Blocks we have */
         Count = (RelocationDir->SizeOfBlock - sizeof(IMAGE_BASE_RELOCATION)) /
sizeof(USHORT);
-
+
         /* Calculate the Address of this Directory */
-        Address = KERNEL_BASE_PHYS + RelocationDir->VirtualAddress;
-
+        Address = (ULONG)KernelMemory + RelocationDir->VirtualAddress;
+
         /* Calculate the Offset of the Type */
         TypeOffset = (PUSHORT)(RelocationDir + 1);
-        for (i = 0; i < Count; i++) {
-
+        for (i = 0; i < (INT)Count; i++) {
+
             ShortPtr = (PUSHORT)(Address + (*TypeOffset & 0xFFF));
-            /* Don't relocate after the end of the loaded driver */
-            if ((ULONG_PTR)ShortPtr >= MaxAddress) break;
-
             switch (*TypeOffset >> 12) {
-
+
                 case IMAGE_REL_BASED_ABSOLUTE:
                     break;
@@ -528,65 +386,63 @@
                     *LongPtr += Delta;
                     break;
             }
-
+
             TypeOffset++;
         }
-
+
         /* Move to the next Relocation Table */
         RelocationDir = (PIMAGE_BASE_RELOCATION)((ULONG_PTR)RelocationDir +
RelocationDir->SizeOfBlock);
     }
-
+
     /* Increase the next Load Base */
-    NextModuleBase = ROUND_UP(KERNEL_BASE_PHYS + ImageSize, PAGE_SIZE);
+    NextModuleBase = ROUND_UP((ULONG)KernelMemory + ImageSize, PAGE_SIZE);
     /* Return Success */
-#endif
     return TRUE;
 }
 ULONG_PTR
 NTAPI
-FrLdrLoadModule(FILE *ModuleImage,
-                LPCSTR ModuleName,
+FrLdrLoadModule(FILE *ModuleImage,
+                LPCSTR ModuleName,
                 PULONG ModuleSize)
 {
-#if 0
     ULONG LocalModuleSize;
-    PFRLDR_MODULE ModuleData;
+    PLOADER_MODULE ModuleData;
     LPSTR NameBuffer;
     LPSTR TempName;
     /* Get current module data structure and module name string array */
-    ModuleData = &multiboot_modules[LoaderBlock.ModsCount];
-
+    ModuleData = &reactos_modules[LoaderBlock.ModsCount];
+
     /* Get only the Module Name */
     do {
-
+
         TempName = strchr(ModuleName, '\\');
-
+
         if(TempName) {
             ModuleName = TempName + 1;
         }
     } while(TempName);
-    NameBuffer = multiboot_module_strings[LoaderBlock.ModsCount];
+    NameBuffer = reactos_module_strings[LoaderBlock.ModsCount];
     /* Get Module Size */
     LocalModuleSize = FsGetFileSize(ModuleImage);
-
+
     /* Fill out Module Data Structure */
-    ModuleData->ModuleStart = NextModuleBase;
-    ModuleData->ModuleEnd = NextModuleBase + LocalModuleSize;
-
+    ModuleData->ModStart = NextModuleBase;
+    ModuleData->ModEnd = NextModuleBase + LocalModuleSize;
+
     /* Save name */
     strcpy(NameBuffer, ModuleName);
-    ModuleData->ModuleName = NameBuffer;
+    ModuleData->String = (ULONG_PTR)NameBuffer;
     /* Load the file image */
     FsReadFile(ModuleImage, LocalModuleSize, NULL, (PVOID)NextModuleBase);
     /* Move to next memory block and increase Module Count */
-    NextModuleBase = ROUND_UP(ModuleData->ModuleEnd, PAGE_SIZE);
+    NextModuleBase = ROUND_UP(ModuleData->ModEnd, PAGE_SIZE);
     LoaderBlock.ModsCount++;
     /* Return Module Size if required */
@@ -594,63 +450,55 @@
         *ModuleSize = LocalModuleSize;
     }
-    return(ModuleData->ModuleStart);
-#else
-    return 0;
-#endif
+    return(ModuleData->ModStart);
 }
 ULONG_PTR
 NTAPI
 FrLdrCreateModule(LPCSTR ModuleName)
 {
-#if 0
-    PFRLDR_MODULE ModuleData;
+    PLOADER_MODULE ModuleData;
     LPSTR NameBuffer;
     /* Get current module data structure and module name string array */
-    ModuleData = &multiboot_modules[LoaderBlock.ModsCount];
-    NameBuffer = multiboot_module_strings[LoaderBlock.ModsCount];
+    ModuleData = &reactos_modules[LoaderBlock.ModsCount];
+    NameBuffer = reactos_module_strings[LoaderBlock.ModsCount];
     /* Set up the structure */
-    ModuleData->ModuleStart = NextModuleBase;
-    ModuleData->ModuleEnd = -1;
-
+    ModuleData->ModStart = NextModuleBase;
+    ModuleData->ModEnd = -1;
+
     /* Copy the name */
     strcpy(NameBuffer, ModuleName);
-    ModuleData->ModuleName = NameBuffer;
+    ModuleData->String = (ULONG_PTR)NameBuffer;
     /* Set the current Module */
     CurrentModule = ModuleData;
     /* Return Module Base Address */
-    return(ModuleData->ModuleStart);
-#else
-    return 0;
-#endif
+    return(ModuleData->ModStart);
 }
 BOOLEAN
 NTAPI
-FrLdrCloseModule(ULONG_PTR ModuleBase,
+FrLdrCloseModule(ULONG_PTR ModuleBase,
                  ULONG ModuleSize)
 {
-#if 0
-    PFRLDR_MODULE ModuleData = CurrentModule;
+    PLOADER_MODULE ModuleData = CurrentModule;
     /* Make sure a module is opened */
     if (ModuleData) {
-
+
         /* Make sure this is the right module and that it hasn't been closed */
-        if ((ModuleBase == ModuleData->ModuleStart) &&
(ModuleData->ModuleEnd == -1)) {
-
+        if ((ModuleBase == ModuleData->ModStart) && (ModuleData->ModEnd ==
(ULONG_PTR)-1)) {
+
             /* Close the Module */
-            ModuleData->ModuleEnd = ModuleData->ModuleStart + ModuleSize;
+            ModuleData->ModEnd = ModuleData->ModStart + ModuleSize;
             /* Set the next Module Base and increase the number of modules */
-            NextModuleBase = ROUND_UP(ModuleData->ModuleEnd, PAGE_SIZE);
+            NextModuleBase = ROUND_UP(ModuleData->ModEnd, PAGE_SIZE);
             LoaderBlock.ModsCount++;
-
+
             /* Close the currently opened module */
             CurrentModule = NULL;
@@ -660,6 +508,5 @@
     }
     /* Failure path */
-#endif
     return(FALSE);
 }