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This commit is contained in:
Chiharu Shirasaka 2020-10-25 20:17:25 +09:00
parent bf62b2063a
commit 5981ed804b
1 changed files with 14 additions and 26 deletions
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38
BrainLILODrv.cpp
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@ -68,9 +68,6 @@ static FileSystemPowerFunctionProc FileSystemPowerFunction;
typedef LPVOID (*AllocPhysMemProc)(DWORD,DWORD,DWORD,DWORD,PULONG);
DWORD FileSize;
unsigned long bootloaderphysaddr;
static void disableInterrupts(){
asm volatile("mrs r0, cpsr\n"
"orr r0,r0,#0x80\n"
@ -126,10 +123,11 @@ static void EDNA2_runPhysicalInvoker(){
asm volatile("msr cpsr_c, #211\n" // to supervisor mode
"mrc p15,0,r0,c1,c0,0\n" // read ctrl regs
"bic r0, r0, #8192\n" // reset vector to lower
"bic r0, r0, #5\n" // disable MMU/DCache
"mcr p15,0,r0,c1,c0,0\n" // write ctrl regs
);
for(DWORD i=0;i<FileSize;i++)*((char*)(0x40100000+i))=*((char*)bootloaderphysaddr+i);
for(int i=0;i<0x100000;i++)*((char *)(0x80200000+i))=*((char *)(0x80000000+i));
asm volatile("ldr r0, =0x0000\n"
"ldr r1, =0x0000\n"
"ldr r2, =0x0000\n"
@ -138,9 +136,12 @@ static void EDNA2_runPhysicalInvoker(){
"ldr r5, =0x0000\n"
"ldr r6, =0x0000\n"
"ldr r7, =0x0000\n"
"ldr r8, =0x40100000\n"
"ldr r8, =0x40200000\n"
"ldr r9, =0x0000\n"
"mrc p15,0,r10,c1,c0,0\n" // read ctrl regs
"bic r10, r10, #5\n" // disable MMU/DCache
"mcr p15,0,r10,c1,c0,0\n" // write ctrl regs
"swi #0\n" // jump!
);
@ -164,20 +165,7 @@ static bool doLinux(){
LPVOID bootloaderptr;
wchar_t buf[256];
HINSTANCE dll;
AllocPhysMemProc AllocPhysMem;
DWORD wReadSize;
dll=LoadLibrary(TEXT("COREDLL.DLL"));
if (dll == NULL) {
OutputDebugString(L"BrainLILO: Cant load COREDLL.DLL");
return false;
}
AllocPhysMem=(AllocPhysMemProc)GetProcAddress(dll,TEXT("AllocPhysMem"));
if (AllocPhysMem == NULL) {
OutputDebugString(L"BrainLILO: Cant load AllocPhysMem function");
return false;
}
DWORD wReadSize,FileSize;
OutputDebugString(L"BrainLILO: Opening Bootloader file...");
hFile = CreateFile(bootloaderFileName , GENERIC_READ , 0 , NULL ,OPEN_EXISTING , FILE_ATTRIBUTE_NORMAL , NULL);
@ -192,12 +180,12 @@ static bool doLinux(){
swprintf(buf, L"BrainLILO: Bootloader file size %d Byte\n",FileSize);
OutputDebugString(buf);
bootloaderptr=AllocPhysMem(FileSize,PAGE_EXECUTE_READWRITE,0,0,&bootloaderphysaddr);
swprintf(buf, L"BrainLILO: Allocated preload memory Virtual:%p Physical:%p\n",bootloaderptr,bootloaderphysaddr);
OutputDebugString(buf);
OutputDebugString(L"BrainLILO: Copying bootloader to allocated virtual memory...");
ReadFile(hFile , bootloaderptr , FileSize , &wReadSize , NULL);
OutputDebugString(L"BrainLILO: Preloading bootloader to 0x80000000...");
if (!ReadFile(hFile , (void *)0x80000000 , FileSize , &wReadSize , NULL)) {
OutputDebugString(L"Cant read bootloader");
return false;
}
OutputDebugString(L"BrainLILO: Bootloader copied! Closing file handle...");
CloseHandle(hFile);