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brainlilo/BrainLILODrv.cpp

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/*
* BrainLILODrv
* U-Boot loader for electric dictionary.
*
* Copyright (C) 2019 C. Shirasaka <holly_programmer@outlook.com>
* based on
** ResetKitHelper
** Soft/hard reset the electronic dictionary.
**
** Copyright (C) 2012 T. Kawada <tcppjp [ at ] gmail.com>
*
* This file is licensed in MIT license.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#include <windows.h>
#include <stdint.h>
#define FSNOTIFY_POWER_OFF 1
#define FSNOTIFY_POWER_ON 0
#define BRAINLILODRV_API __declspec(dllexport)
#include "BrainLILODrv.h"
#define FILE_DEVICE_POWER FILE_DEVICE_ACPI
#define IOCTL_POWER_CAPABILITIES \
CTL_CODE(FILE_DEVICE_POWER, 0x400, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_POWER_GET \
CTL_CODE(FILE_DEVICE_POWER, 0x401, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_POWER_SET \
CTL_CODE(FILE_DEVICE_POWER, 0x402, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_POWER_QUERY \
CTL_CODE(FILE_DEVICE_POWER, 0x403, METHOD_BUFFERED, FILE_ANY_ACCESS)
typedef BOOL (*KernelIoControlProc)(DWORD dwIoControlCode, LPVOID lpInBuf,
DWORD nInBufSize, LPVOID lpOutBuf, DWORD nOutBufSize,LPDWORD lpBytesReturned);
static KernelIoControlProc KernelIoControl;
typedef LARGE_INTEGER PHYSICAL_ADDRESS, *PPHYSICAL_ADDRESS;
typedef PVOID (*MmMapIoSpaceProc)(PHYSICAL_ADDRESS, ULONG, BOOL);
static MmMapIoSpaceProc MmMapIoSpace;
typedef void (*FileSystemPowerFunctionProc)(DWORD);
static FileSystemPowerFunctionProc FileSystemPowerFunction;
typedef LPVOID (*AllocPhysMemProc)(DWORD,DWORD,DWORD,DWORD,PULONG);
typedef void (*NKForceCleanBootProc)(BOOL);
//UART
#define UART_BASE_ADDR 0x80074000
unsigned int *UARTMappedAddr;
static void serialout(char text){
*UARTMappedAddr=(unsigned int)text;
return;
}
static void print(char *string) {
do {
serialout(*string);
string++;
} while (*string != '\0');
}
static int pow(int base, int exponent) {
int ans = 1;
for (int i = 0; i < exponent; i++) {
ans *= base;
}
return ans;
}
static void printhex(int num) {
unsigned char digit=8;
print("0x");
while (digit) {
int weight = pow(16, digit - 1);
int ans;
for(ans=0;weight<=num;ans++){
num -= weight;
}
if (ans < 10){
serialout('0' + ans);
}
else{
serialout('A' + ans - 10);
}
num -= ans * weight;
digit--;
}
}
static void disableInterrupts(){
asm volatile("mrs r0, cpsr\n"
"orr r0,r0,#0x80\n"
"msr cpsr_c,r0\n"
"mov r0,#1":::"r0");
}
static void EDNA2_physicalInvoker(){
// r0-r7=params
// r8=proc address
asm volatile("nop\n" // who cares interrupt vectors?
"nop\n"
"nop\n"
"nop\n"
"nop\n"
"nop\n"
"nop\n"
"nop\n"
"nop\n"
"nop\n"
"msr cpsr_c, #211\n" // to supervisor mode
"mov r9, #0\n"
"mcr p15,0,r9,c13,c0,0\n" // clear fcse PID
"mrc p15,0,r9,c1,c0,0\n" // read ctrl regs
"bic r9, r9, #5\n" // disable MMU/DCache
"bic r9, r9, #4096\n" // disable ICache
"orr r9, r9, #8192\n" // and reset vectors to upper
"mcr p15,0,r9,c1,c0,0\n" // write ctrl regs
"mov r9, #0\n"
"mcr p15,0,r9,c7,c7,0\n" // invalidate cache
"mcr p15,0,r9,c8,c7,0\n" // invalidate tlb
"mov pc, r8\n"
"nop\n"
"nop\n"
);
}
static void EDNA2_installPhysicalInvoker(){
void *ptr=(void *)0xa8000000;
print("BrainLILO: Invoker copying to ");
printhex((int)(ptr));
print(" from ");
printhex((int)(&EDNA2_physicalInvoker));
print("\n");
memcpy(ptr, (const void *)&EDNA2_physicalInvoker, 64*4);
//clearCache();
}
__attribute__((noreturn))
static void EDNA2_runPhysicalInvoker(unsigned long bootloaderphysaddr,DWORD size){
// r0=info
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
"mcr p15,0,r0,c1,c0,0\n" // write ctrl regs
);
print("BrainLILO: U-Boot copying to ");
printhex(0x40002000);
print(" from ");
printhex((int)(bootloaderphysaddr));
print("\n");
for(unsigned int i=0;i<size;i++)*((char *)(0x40002000+i))=*((char *)(bootloaderphysaddr+i));
print("BrainLILO: U-Boot copied. Jump!\n");
asm volatile("ldr r0, =0x0000\n"
"ldr r1, =0x0000\n"
"ldr r2, =0x0000\n"
"ldr r3, =0x0000\n"
"ldr r4, =0x0000\n"
"ldr r5, =0x0000\n"
"ldr r6, =0x0000\n"
"ldr r7, =0x0000\n"
"ldr r8, =0x40002000\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!
);
// never reach here
while(true);
}
__attribute__((noreturn))
static DWORD EDNA2_callKernelEntryPoint(unsigned long bootloaderphysaddr,DWORD size){
print("BrainLILO: disabling interrupts\n");
disableInterrupts();
print("BrainLILO: injecting code to internal ram\n");
EDNA2_installPhysicalInvoker();
print("BrainLILO: invoking\n");
EDNA2_runPhysicalInvoker(bootloaderphysaddr,size);
}
static bool doLinux(){
char *bootloaderdata;
TCHAR bootloaderFileName[128]=TEXT("\\Storage Card\\loader\\u-boot.bin");
HANDLE hFile;
DWORD wReadSize;
unsigned long bootloaderphysaddr;
PULONG bootloaderptr;
HINSTANCE dll;
AllocPhysMemProc AllocPhysMem;
dll=LoadLibrary(TEXT("COREDLL.DLL"));
if (dll == NULL) {
print("Cant load DLL\n");
return false;
}
AllocPhysMem=(AllocPhysMemProc)GetProcAddress(dll,TEXT("AllocPhysMem"));
if (AllocPhysMem == NULL) {
print("Cant load AllocPhysMem function\n");
return false;
}
print("BrainLILO: loading bootloader.\n");
hFile = CreateFile(bootloaderFileName , GENERIC_READ , 0 , NULL ,OPEN_EXISTING , FILE_ATTRIBUTE_NORMAL , NULL);
if (hFile == INVALID_HANDLE_VALUE) {
print("Cant load bootloader\n");
return false;
}
bootloaderdata = (char *)malloc(GetFileSize(hFile , NULL));
ReadFile(hFile , bootloaderdata , GetFileSize(hFile , NULL) , &wReadSize , NULL);
CloseHandle(hFile);
bootloaderptr=(PULONG)AllocPhysMem(wReadSize,PAGE_EXECUTE_READWRITE,0,0,&bootloaderphysaddr);
print("BrainLILO: preloading bootloader to ");
printhex((int)(bootloaderptr));
print(" from ");
printhex((int)(bootloaderdata));
print("\n");
memcpy(bootloaderptr,bootloaderdata,wReadSize);
print("BrainLILO: bootloader preloaded\n");
free(bootloaderdata);
FreeLibrary(dll);
EDNA2_callKernelEntryPoint(bootloaderphysaddr,wReadSize);
return true;
}
extern "C" BRAINLILODRV_API BOOL LIN_IOControl(DWORD handle, DWORD dwIoControlCode, DWORD *pInBuf, DWORD nInBufSize, DWORD * pOutBuf, DWORD nOutBufSize,
PDWORD pBytesReturned){
SetLastError(0);
switch(dwIoControlCode){
case IOCTL_LIN_DO_LINUX:
if(FileSystemPowerFunction)
FileSystemPowerFunction(FSNOTIFY_POWER_OFF);
if(!doLinux()){
if(FileSystemPowerFunction)
FileSystemPowerFunction(FSNOTIFY_POWER_ON);
return FALSE;
}
return TRUE;
}
return FALSE;
}
extern "C" BRAINLILODRV_API BOOL LIN_Read(DWORD handle, LPVOID pBuffer, DWORD dwNumBytes){
SetLastError(ERROR_INVALID_FUNCTION);
return FALSE;
}
extern "C" BRAINLILODRV_API BOOL LIN_Write(DWORD handle, LPVOID pBuffer, DWORD dwNumBytes){
SetLastError(ERROR_INVALID_FUNCTION);
return FALSE;
}
extern "C" BRAINLILODRV_API DWORD LIN_Seek(DWORD handle, long lDistance, DWORD dwMoveMethod){
SetLastError(ERROR_INVALID_FUNCTION);
return FALSE;
}
extern "C" BRAINLILODRV_API void LIN_PowerUp(void){
print("BrainLILO: resuming.");
}
extern "C" BRAINLILODRV_API void LIN_PowerDown(void){
}
extern "C" BRAINLILODRV_API DWORD LIN_Init(LPCTSTR pContext,
DWORD dwBusContext){
void *ctx;
ctx=(void *)LocalAlloc(LPTR, sizeof(4));
return (DWORD)ctx;
}
extern "C" BRAINLILODRV_API DWORD LIN_Open(DWORD dwData, DWORD dwAccess, DWORD dwShareMode){
void *hnd=(void *)LocalAlloc(LPTR, 4);
return (DWORD)hnd;
}
extern "C" BRAINLILODRV_API BOOL LIN_Close(DWORD handle){
LocalFree((void *)handle);
return TRUE;
}
extern "C" BRAINLILODRV_API BOOL LIN_Deinit(DWORD dwContext){
LocalFree((void *)dwContext);
return TRUE;
}
extern "C" BOOL APIENTRY DllMainCRTStartup( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)
{
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
case DLL_THREAD_ATTACH:
KernelIoControl=(KernelIoControlProc)
GetProcAddress(LoadLibrary(L"COREDLL"),
L"KernelIoControl");
MmMapIoSpace=(MmMapIoSpaceProc)
GetProcAddress(LoadLibrary(L"CEDDK"),
L"MmMapIoSpace");
FileSystemPowerFunction=(FileSystemPowerFunctionProc)
GetProcAddress(LoadLibrary(L"COREDLL"),
L"FileSystemPowerFunction");
PHYSICAL_ADDRESS pa;
pa.QuadPart = UART_BASE_ADDR;
UARTMappedAddr=(unsigned int*)MmMapIoSpace(pa,0x48,FALSE);//Map to Virtual Addr
*(UARTMappedAddr+0x38)=0;//Interrupt Disable
*(UARTMappedAddr+0x30)=0b0100000100000001;//RTS Hardware Flow Control, Transmit, UART Enable
case DLL_THREAD_DETACH:
case DLL_PROCESS_DETACH:
break;
}
return TRUE;
}
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