xt-sys/exectos
xt-sys/exectos
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Create new stack and then boot XTOS, export more routines with the loader protocol
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This commit is contained in:
Rafal Kupiec 2022-12-07 20:34:16 +01:00
parent d50fb7c37d
commit 900e86c9da
Signed by: belliash
GPG Key ID: 4E829243E0CFE6B4
4 changed files with 60 additions and 7 deletions
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4
sdk/xtdk/xttarget.h
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@ -22,12 +22,16 @@
#define _XT32 1
#define EFI_ERROR_MASK 0x80000000
#define XTOS_KERNEL_ADDRESS 0x81800000
#define XTOS_KERNEL_STACK_SIZE 8
#define XTOS_VIRTUAL_MEMORY_AREA 0x80000000
#elif defined(__amd64__) || defined(__x86_64__)
#define _ARCH amd64
#define _ARCH_AMD64 1
#define _XT64 1
#define EFI_ERROR_MASK 0x8000000000000000
#define XTOS_KERNEL_ADDRESS 0xFFFFF80800000000
#define XTOS_KERNEL_STACK_SIZE 8
#define XTOS_VIRTUAL_MEMORY_AREA 0xFFFFF80000000000
#else
#error Unknown architecture
#endif

10
xtldr/includes/blproto.h
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@ -14,10 +14,15 @@
/* Loader protocol routine pointers */
typedef EFI_STATUS (*PBL_ADD_VIRTUAL_MEMORY_MAPPING)(IN PLIST_ENTRY MemoryMappings, IN PVOID VirtualAddress, IN PVOID PhysicalAddress, IN UINT NumberOfPages, LOADER_MEMORY_TYPE MemoryType);
typedef EFI_STATUS (*PBL_ALLOCATE_PAGES)(IN UINT64 Size, OUT PEFI_PHYSICAL_ADDRESS Memory);
typedef EFI_STATUS (*PBL_ALLOCATE_POOL)(IN UINT_PTR Size, OUT PVOID *Memory);
typedef EFI_STATUS (*PBL_FREE_PAGES)(IN UINT64 Size, IN EFI_PHYSICAL_ADDRESS Memory);
typedef EFI_STATUS (*PBL_FREE_POOL)(IN PVOID Memory);
typedef EFI_STATUS (*PBL_GET_MEMORY_MAP)(OUT PEFI_MEMORY_DESCRIPTOR *MemoryMap, OUT PUINT_PTR MapKey, OUT PUINT_PTR DescriptorSize, OUT PUINT_PTR DescriptorCount);
typedef EFI_STATUS (*PBL_INIT_VIRTUAL_MEMORY)(IN OUT PLIST_ENTRY MemoryMappings, IN OUT PVOID *MemoryMapAddress);
typedef EFI_STATUS (*PBL_MAP_VIRTUAL_MEMORY)(IN PLIST_ENTRY MemoryMappings, IN UINT_PTR VirtualAddress, IN UINT_PTR PhysicalAddress, IN UINT NumberOfPages, IN OUT PVOID *PtePointer);
typedef VOID (*PBL_GET_STACK)(OUT PVOID *Stack);
typedef VOID (*PBL_DBG_PRINT)(IN PUINT16 Format, IN ...);
typedef VOID (*PBL_EFI_PRINT)(IN PUINT16 Format, IN ...);
typedef EFI_STATUS (*PBL_CLOSE_VOLUME)(IN PEFI_HANDLE VolumeHandle);
@ -26,10 +31,15 @@ typedef EFI_STATUS (*PBL_OPEN_VOLUME)(IN PEFI_DEVICE_PATH_PROTOCOL DevicePath, O
/* EFI XT Boot Loader Protocol */
typedef struct _XT_BOOT_LOADER_PROTOCOL
{
PBL_ADD_VIRTUAL_MEMORY_MAPPING AddVirtualMemoryMapping;
PBL_ALLOCATE_PAGES AllocatePages;
PBL_ALLOCATE_POOL AllocatePool;
PBL_FREE_PAGES FreePages;
PBL_FREE_POOL FreePool;
PBL_GET_MEMORY_MAP GetMemoryMap;
PBL_INIT_VIRTUAL_MEMORY InitializeVirtualMemory;
PBL_MAP_VIRTUAL_MEMORY MapVirtualMemory;
PBL_GET_STACK GetStack;
PBL_DBG_PRINT DbgPrint;
PBL_EFI_PRINT EfiPrint;
PBL_CLOSE_VOLUME CloseVolume;

8
xtldr/includes/xtbl.h
View File

@ -26,6 +26,9 @@ EXTERN PEFI_SYSTEM_TABLE EfiSystemTable;
/* EFI Secure Boot status */
EXTERN INT_PTR EfiSecureBoot;
/* New bootloader stack */
EXTERN PVOID EfiLoaderStack;
/* Serial port configuration */
EXTERN CPPORT EfiSerialPort;
@ -103,6 +106,8 @@ BlGetMemoryMap(OUT PEFI_MEMORY_DESCRIPTOR *MemoryMap,
OUT PUINT_PTR DescriptorSize,
OUT PUINT_PTR DescriptorCount);
VOID BlGetStackPointer(OUT PVOID *Stack);
EFI_STATUS
BlGetVolumeDevicePath(IN PUCHAR SystemPath,
OUT PEFI_DEVICE_PATH_PROTOCOL *DevicePath,
@ -131,6 +136,9 @@ BlOpenVolume(IN PEFI_DEVICE_PATH_PROTOCOL DevicePath,
EFI_STATUS
BlRegisterXtLoaderProtocol();
EFI_STATUS
BlStartNewStack();
EFI_STATUS
BlStartXtLoader(IN EFI_HANDLE ImageHandle,
IN PEFI_SYSTEM_TABLE SystemTable);

45
xtldr/xtldr.c
View File

@ -21,9 +21,18 @@ PEFI_SYSTEM_TABLE EfiSystemTable;
/* EFI Secure Boot status */
INT_PTR EfiSecureBoot;
/* New bootloader stack */
PVOID EfiLoaderStack;
/* Serial port configuration */
CPPORT EfiSerialPort;
VOID BlGetStackPointer(OUT PVOID *Stack)
{
*Stack = EfiLoaderStack;
}
/**
* This routine loads XTLDR EFI modules.
*
@ -316,10 +325,15 @@ BlRegisterXtLoaderProtocol()
EFI_HANDLE Handle = NULL;
/* Set all routines available via loader protocol */
EfiLdrProtocol.AddVirtualMemoryMapping = BlAddVirtualMemoryMapping;
EfiLdrProtocol.AllocatePages = BlEfiMemoryAllocatePages;
EfiLdrProtocol.AllocatePool = BlEfiMemoryAllocatePool;
EfiLdrProtocol.FreePages = BlEfiMemoryFreePages;
EfiLdrProtocol.FreePool = BlEfiMemoryFreePool;
EfiLdrProtocol.GetMemoryMap = BlGetMemoryMap;
EfiLdrProtocol.InitializeVirtualMemory = BlInitializeVirtualMemory;
EfiLdrProtocol.MapVirtualMemory = BlMapVirtualMemory;
EfiLdrProtocol.GetStack = BlGetStackPointer;
EfiLdrProtocol.DbgPrint = BlDbgPrint;
EfiLdrProtocol.EfiPrint = BlEfiPrint;
EfiLdrProtocol.CloseVolume = BlCloseVolume;
@ -331,6 +345,27 @@ BlRegisterXtLoaderProtocol()
&EfiLdrProtocol);
}
EFI_STATUS
BlStartNewStack()
{
EFI_STATUS Status;
/* Boot XTOS */
Status = BlLoadXtSystem();
if(Status != STATUS_EFI_SUCCESS)
{
/* Boot process failed */
BlEfiPrint(L"Failed to start XT OS (Status code: %lx)!\n", Status);
}
/* Infinite bootloader loop */
BlEfiPrint(L"System halted!");
for(;;);
/* Return success */
return STATUS_EFI_SUCCESS;
}
/**
* This routine is the entry point of the XT EFI boot loader.
*
@ -400,15 +435,11 @@ BlStartXtLoader(IN EFI_HANDLE ImageHandle,
/* Discover and enumerate EFI block devices */
BlEnumerateEfiBlockDevices();
/* Boot XTOS */
Status = BlLoadXtSystem();
if(Status != STATUS_EFI_SUCCESS)
{
/* Boot process failed */
BlEfiPrint(L"Failed to start XT OS (Status code: %lx)!\n", Status);
}
/* Create new bootloader stack */
BlCreateStack(&EfiLoaderStack, XTOS_KERNEL_STACK_SIZE, &BlStartNewStack);
/* Infinite bootloader loop */
BlDbgPrint(L"ERROR: Unexpected exception occurred, probably did not create a new stack");
BlEfiPrint(L"System halted!");
for(;;);