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Some code

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devdl11
2022-04-27 19:24:59 +02:00
parent 45b4dd337c
commit c73b13bd41
6 changed files with 35 additions and 16 deletions
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32
bootloader/boot.cpp
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@@ -58,12 +58,16 @@ bool Boot::isKernelPatched(const Slot & s) {
return true;
}
return *(uint32_t *)(origin_isr + sizeof(uint32_t) * 4) == (uint32_t)&_fake_isr_function_start && *(uint32_t *)(origin_isr + sizeof(uint32_t) * 5) == (uint32_t)&_fake_isr_function_start && *(uint32_t *)(origin_isr + sizeof(uint32_t) * 6) == (uint32_t)&_fake_isr_function_start && *(uint32_t *)(origin_isr + sizeof(uint32_t) * 7) == (uint32_t)&_fake_isr_function_start;
// return *(uint32_t *)(origin_isr + sizeof(uint32_t) * 4) == ((uint32_t)&_fake_isr_function_start) + 1 && *(uint32_t *)(origin_isr + sizeof(uint32_t) * 5) == ((uint32_t)&_fake_isr_function_start) + 1 && *(uint32_t *)(origin_isr + sizeof(uint32_t) * 6) == ((uint32_t)&_fake_isr_function_start) + 1 && *(uint32_t *)(origin_isr + sizeof(uint32_t) * 7) == ((uint32_t)&_fake_isr_function_start) + 1;*(uint32_t *)(origin_isr + sizeof(uint32_t) * 4) == ((uint32_t)&_fake_isr_function_start) + 1 && *(uint32_t *)(origin_isr + sizeof(uint32_t) * 5) == ((uint32_t)&_fake_isr_function_start) + 1 && *(uint32_t *)(origin_isr + sizeof(uint32_t) * 6) == ((uint32_t)&_fake_isr_function_start) + 1 && *(uint32_t *)(origin_isr + sizeof(uint32_t) * 7) == ((uint32_t)&_fake_isr_function_start) + 1;*(uint32_t *)(origin_isr + sizeof(uint32_t) * 4) == ((uint32_t)&_fake_isr_function_start) + 1 && *(uint32_t *)(origin_isr + sizeof(uint32_t) * 5) == ((uint32_t)&_fake_isr_function_start) + 1 && *(uint32_t *)(origin_isr + sizeof(uint32_t) * 6) == ((uint32_t)&_fake_isr_function_start) + 1 && *(uint32_t *)(origin_isr + sizeof(uint32_t) * 7) == ((uint32_t)&_fake_isr_function_start) + 1;
return *(uint32_t *)(origin_isr + sizeof(uint32_t) * 7) == ((uint32_t)&_fake_isr_function_start) + 1;
}
__attribute((section(".fake_isr_function"))) __attribute__((used)) void Boot::flash_interrupt() {
// a simple function
Ion::Device::Flash::ClearInternalFlashErrors();
asm("bx lr");
asm("ldr PC, [PC, -0x18]");
Ion::LED::setColor(KDColorBlue);
}
void Boot::patchKernel(const Slot & s) {
@@ -71,27 +75,27 @@ void Boot::patchKernel(const Slot & s) {
// we allocate a big buffer to store the first sector
uint8_t data[1024*4];
memcpy(data, (void*)0x90000000, 1024*4);
uint32_t dummy_address = (uint32_t)&_fake_isr_function_start;
uint32_t dummy_address = (uint32_t)&_fake_isr_function_start + 1;
uint8_t * ptr = (uint8_t *)&dummy_address;
data[origin_isr + sizeof(uint32_t) * 6] = ptr[0];
data[origin_isr + sizeof(uint32_t) * 6] = ptr[0]; // BusFault
data[origin_isr + sizeof(uint32_t) * 6 + 1] = ptr[1];
data[origin_isr + sizeof(uint32_t) * 6 + 2] = ptr[2];
data[origin_isr + sizeof(uint32_t) * 6 + 3] = ptr[3];
data[origin_isr + sizeof(uint32_t) * 5] = ptr[0];
data[origin_isr + sizeof(uint32_t) * 5 + 1] = ptr[1];
data[origin_isr + sizeof(uint32_t) * 5 + 2] = ptr[2];
data[origin_isr + sizeof(uint32_t) * 5 + 3] = ptr[3];
// data[origin_isr + sizeof(uint32_t) * 5] = ptr[0]; // MemManage
// data[origin_isr + sizeof(uint32_t) * 5 + 1] = ptr[1];
// data[origin_isr + sizeof(uint32_t) * 5 + 2] = ptr[2];
// data[origin_isr + sizeof(uint32_t) * 5 + 3] = ptr[3];
data[origin_isr + sizeof(uint32_t) * 7] = ptr[0];
data[origin_isr + sizeof(uint32_t) * 7] = ptr[0]; // UsageFault
data[origin_isr + sizeof(uint32_t) * 7 + 1] = ptr[1];
data[origin_isr + sizeof(uint32_t) * 7 + 2] = ptr[2];
data[origin_isr + sizeof(uint32_t) * 7 + 3] = ptr[3];
data[origin_isr + sizeof(uint32_t) * 4] = ptr[0];
data[origin_isr + sizeof(uint32_t) * 4 + 1] = ptr[1];
data[origin_isr + sizeof(uint32_t) * 4 + 2] = ptr[2];
data[origin_isr + sizeof(uint32_t) * 4 + 3] = ptr[3];
// data[origin_isr + sizeof(uint32_t) * 4] = ptr[0];//hardfault
// data[origin_isr + sizeof(uint32_t) * 4 + 1] = ptr[1];
// data[origin_isr + sizeof(uint32_t) * 4 + 2] = ptr[2];
// data[origin_isr + sizeof(uint32_t) * 4 + 3] = ptr[3];
Ion::Device::ExternalFlash::EraseSector(0);
Ion::Device::ExternalFlash::WriteMemory((uint8_t*)0x90000000, data, 1024*4);
@@ -119,7 +123,7 @@ void Boot::bootSelectedSlot() {
// enableFlashIntr();
config()->setBooting(true);
config()->slot()->boot();
Ion::Device::Flash::EnableInternalSessionLock();
// Ion::Device::Flash::EnableInternalSessionLock();
}
__attribute__((noreturn)) void Boot::boot() {