* 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.
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#define _NTSYSTEM_
#include <freeldr.h>
#define NDEBUG
/* Already done */
}
-void
-DumpLoaderBlock()
-{
- DbgPrint("LoaderBlock @ %p.\n", &LoaderBlock);
- DbgPrint("Flags = 0x%x.\n", LoaderBlock.Flags);
- DbgPrint("MemLower = 0x%p.\n", (PVOID)LoaderBlock.MemLower);
- DbgPrint("MemHigher = 0x%p.\n", (PVOID)LoaderBlock.MemHigher);
- DbgPrint("BootDevice = 0x%x.\n", LoaderBlock.BootDevice);
- DbgPrint("CommandLine = %s.\n", LoaderBlock.CommandLine);
- DbgPrint("ModsCount = 0x%x.\n", LoaderBlock.ModsCount);
- DbgPrint("ModsAddr = 0x%p.\n", LoaderBlock.ModsAddr);
- DbgPrint("Syms = 0x%s.\n", LoaderBlock.Syms);
- DbgPrint("MmapLength = 0x%x.\n", LoaderBlock.MmapLength);
- DbgPrint("MmapAddr = 0x%p.\n", (PVOID)LoaderBlock.MmapAddr);
- DbgPrint("RdLength = 0x%x.\n", LoaderBlock.RdLength);
- DbgPrint("RdAddr = 0x%p.\n", (PVOID)LoaderBlock.RdAddr);
- DbgPrint("DrivesCount = 0x%x.\n", LoaderBlock.DrivesCount);
- DbgPrint("DrivesAddr = 0x%p.\n", (PVOID)LoaderBlock.DrivesAddr);
- DbgPrint("ConfigTable = 0x%x.\n", LoaderBlock.ConfigTable);
- DbgPrint("BootLoaderName = 0x%x.\n", LoaderBlock.BootLoaderName);
- DbgPrint("PageDirectoryStart = 0x%p.\n", (PVOID)LoaderBlock.PageDirectoryStart);
- DbgPrint("PageDirectoryEnd = 0x%p.\n", (PVOID)LoaderBlock.PageDirectoryEnd);
- DbgPrint("KernelBase = 0x%p.\n", (PVOID)LoaderBlock.KernelBase);
- DbgPrint("ArchExtra = 0x%p.\n", (PVOID)LoaderBlock.ArchExtra);
-
-}
-
/*++
* FrLdrStartup
* INTERNAL
NTAPI
FrLdrStartup(ULONG Magic)
{
- /* Disable Interrupts */
- _disable();
-
- /* Re-initalize EFLAGS */
- KeAmd64EraseFlags();
-
- /* Initialize the page directory */
- FrLdrSetupPageDirectory();
-
- /* Set the new PML4 */
- __writecr3((ULONGLONG)pPML4);
-
- FrLdrSetupGdtIdt();
-
- LoaderBlock.FrLdrDbgPrint = DbgPrint;
-
-// DumpLoaderBlock();
-
- DbgPrint("Jumping to kernel @ %p.\n", KernelEntryPoint);
-
- /* Jump to Kernel */
- (*KernelEntryPoint)(Magic, &LoaderBlock);
-
-}
-
-PPAGE_DIRECTORY_AMD64
-FrLdrGetOrCreatePageDir(PPAGE_DIRECTORY_AMD64 pDir, ULONG Index)
-{
- PPAGE_DIRECTORY_AMD64 pSubDir;
-
- if (!pDir)
- return NULL;
-
- if (!pDir->Pde[Index].Valid)
- {
- pSubDir = MmAllocateMemoryWithType(PAGE_SIZE, LoaderSpecialMemory);
- if (!pSubDir)
- return NULL;
- RtlZeroMemory(pSubDir, PAGE_SIZE);
- pDir->Pde[Index].PageFrameNumber = PtrToPfn(pSubDir);
- pDir->Pde[Index].Valid = 1;
- pDir->Pde[Index].Write = 1;
- }
- else
- {
- pSubDir = (PPAGE_DIRECTORY_AMD64)((ULONGLONG)(pDir->Pde[Index].PageFrameNumber) * PAGE_SIZE);
- }
- return pSubDir;
-}
-
-BOOLEAN
-FrLdrMapSinglePage(ULONGLONG VirtualAddress, ULONGLONG PhysicalAddress)
-{
- PPAGE_DIRECTORY_AMD64 pDir3, pDir2, pDir1;
- ULONG Index;
-
- pDir3 = FrLdrGetOrCreatePageDir(pPML4, VAtoPXI(VirtualAddress));
- pDir2 = FrLdrGetOrCreatePageDir(pDir3, VAtoPPI(VirtualAddress));
- pDir1 = FrLdrGetOrCreatePageDir(pDir2, VAtoPDI(VirtualAddress));
-
- if (!pDir1)
- return FALSE;
-
- Index = VAtoPTI(VirtualAddress);
- if (pDir1->Pde[Index].Valid)
- {
- return FALSE;
- }
-
- pDir1->Pde[Index].Valid = 1;
- pDir1->Pde[Index].Write = 1;
- pDir1->Pde[Index].PageFrameNumber = PhysicalAddress / PAGE_SIZE;
-
- return TRUE;
-}
-
-ULONG
-FrLdrMapRangeOfPages(ULONGLONG VirtualAddress, ULONGLONG PhysicalAddress, ULONG cPages)
-{
- ULONG i;
-
- for (i = 0; i < cPages; i++)
- {
- if (!FrLdrMapSinglePage(VirtualAddress, PhysicalAddress))
- {
- return i;
- }
- VirtualAddress += PAGE_SIZE;
- PhysicalAddress += PAGE_SIZE;
- }
- return i;
-}
-
-
-/*++
- * FrLdrSetupPageDirectory
- * INTERNAL
- *
- * Sets up the ReactOS Startup Page Directory.
- *
- * Params:
- * None.
- *
- * Returns:
- * None.
- *--*/
-VOID
-FASTCALL
-FrLdrSetupPageDirectory(VOID)
-{
- ULONG KernelPages;
- PVOID UserSharedData;
-
- /* Allocate a Page for the PML4 */
- pPML4 = MmAllocateMemoryWithType(PAGE_SIZE, LoaderSpecialMemory);
-
- ASSERT(pPML4);
-
- /* The page tables are located at 0xfffff68000000000
- * We create a recursive self mapping through all 4 levels at
- * virtual address 0xfffff6fb7dbedf68 */
- pPML4->Pde[VAtoPXI(PXE_BASE)].Valid = 1;
- pPML4->Pde[VAtoPXI(PXE_BASE)].Write = 1;
- pPML4->Pde[VAtoPXI(PXE_BASE)].PageFrameNumber = PtrToPfn(pPML4);
-
- /* Setup low memory pages */
- if (FrLdrMapRangeOfPages(0, 0, 1024) < 1024)
- {
- DbgPrint("Could not map low memory pages.\n");
- }
-
- /* Setup kernel pages */
- KernelPages = (ROUND_TO_PAGES(NextModuleBase - KERNEL_BASE_PHYS) / PAGE_SIZE);
- if (FrLdrMapRangeOfPages(KernelBase, KERNEL_BASE_PHYS, KernelPages) != KernelPages)
- {
- DbgPrint("Could not map %d kernel pages.\n", KernelPages);
- }
-
- /* Setup a page for the idt */
- pIdt = MmAllocateMemoryWithType(PAGE_SIZE, LoaderSpecialMemory);
- IdtBase = KernelBase + KernelPages * PAGE_SIZE;
- if (!FrLdrMapSinglePage(IdtBase, (ULONGLONG)pIdt))
- {
- DbgPrint("Could not map idt page.\n", KernelPages);
- }
-
- /* Setup a page for the gdt & tss */
- pGdt = MmAllocateMemoryWithType(PAGE_SIZE, LoaderSpecialMemory);
- GdtBase = IdtBase + PAGE_SIZE;
- TssBase = GdtBase + 20 * sizeof(ULONG64); // FIXME: don't hardcode
- if (!FrLdrMapSinglePage(GdtBase, (ULONGLONG)pGdt))
- {
- DbgPrint("Could not map gdt page.\n", KernelPages);
- }
-
- /* Setup KUSER_SHARED_DATA page */
- UserSharedData = MmAllocateMemoryWithType(PAGE_SIZE, LoaderSpecialMemory);
- if (!FrLdrMapSinglePage(KI_USER_SHARED_DATA, (ULONG64)UserSharedData))
- {
- DbgPrint("Could not map KUSER_SHARED_DATA page.\n", KernelPages);
- }
-
- /* Map APIC page */
- if (!FrLdrMapSinglePage(APIC_BASE, APIC_PHYS_BASE))
- {
- DbgPrint("Could not map APIC page.\n");
- }
-
+ DbgPrint("ReactOS loader is unsupported! Halting.\n", KernelEntryPoint);
+ for(;;);
}
-VOID
-FrLdrSetupGdtIdt()
-{
- PKGDTENTRY64 Entry;
- KDESCRIPTOR Desc;
-
- RtlZeroMemory(pGdt, PAGE_SIZE);
-
- /* Setup KGDT_64_R0_CODE */
- Entry = KiGetGdtEntry(pGdt, KGDT_64_R0_CODE);
- *(PULONG64)Entry = 0x0020980000000000ULL;
-
- /* Setup KGDT_64_DATA */
- Entry = KiGetGdtEntry(pGdt, KGDT_64_DATA);
- *(PULONG64)Entry = 0x0000F00000000000ULL;
-
- /* Setup TSS entry */
- Entry = KiGetGdtEntry(pGdt, KGDT_TSS);
- KiInitGdtEntry(Entry, TssBase, I386_TSS, 0);
-
- /* Setup the gdt descriptor */
- Desc.Limit = 12 * sizeof(ULONG64) - 1;
- Desc.Base = (PVOID)GdtBase;
-
- /* Set the new Gdt */
- __lgdt(&Desc.Limit);
- DbgPrint("Gdtr.Base = %p\n", Desc.Base);
-
- /* Setup the idt descriptor */
- Desc.Limit = 12 * sizeof(ULONG64) - 1;
- Desc.Base = (PVOID)IdtBase;
-
- /* Set the new Idt */
- __lidt(&Desc.Limit);
- DbgPrint("Idtr.Base = %p\n", Desc.Base);
-
-}
projects / reactos.git / blobdiff