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Some code

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This commit is contained in:
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() {

2
build/targets.device.bootloader.mak
View File

@@ -35,7 +35,6 @@ HANDY_TARGETS += epsilon.A epsilon.B
.PHONY: epsilon
epsilon: $(BUILD_DIR)/epsilon.onboarding.bin
$(PYTHON) build/device/secure_ext.py $(BUILD_DIR)/epsilon.onboarding.bin
.DEFAULT_GOAL := epsilon
.PHONY: %_flash
@@ -54,4 +53,3 @@ binpack: $(BUILD_DIR)/epsilon.onboarding.bin
cp $(BUILD_DIR)/epsilon.onboarding.bin $(BUILD_DIR)/binpack
cd $(BUILD_DIR) && for binary in epsilon.onboarding.bin; do shasum -a 256 -b binpack/$${binary} > binpack/$${binary}.sha256;done
cd $(BUILD_DIR) && tar cvfz binpack-$(MODEL)-`git rev-parse HEAD | head -c 7`.tgz binpack/*
$(PYTHON) build/device/secure_ext.py $(BUILD_DIR)/epsilon.onboarding.bin

4
ion/src/device/shared/drivers/flash.cpp
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@@ -70,6 +70,10 @@ void EnableInternalFlashInterrupt() {
InternalFlash::EnableFlashInterrupt();
}
void ClearInternalFlashErrors() {
InternalFlash::ClearErrors();
}
void LockSlotA() {
ExternalFlash::LockSlotA();
}

1
ion/src/device/shared/drivers/flash.h
View File

@@ -20,6 +20,7 @@ void EnableInternalProtection();
void SetInternalSectorProtection(int i, bool protect);
void EnableInternalSessionLock(); // Will cause BUSERR when enabled
void EnableInternalFlashInterrupt();
void ClearInternalFlashErrors();
void LockSlotA();
void LockSlotB();

11
ion/src/device/shared/drivers/internal_flash.cpp
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@@ -363,6 +363,17 @@ void EnableFlashInterrupt() {
close();
}
void ClearErrors() {
class FLASH::SR sr(0);
// Error flags are cleared by writing 1
sr.setERSERR(true);
sr.setPGPERR(true);
sr.setPGAERR(true);
sr.setWRPERR(true);
sr.setEOP(true);
FLASH.SR()->set(sr);
}
}
}
}

1
ion/src/device/shared/drivers/internal_flash.h
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@@ -20,6 +20,7 @@ void DisableProtection();
void SetSectorProtection(int i, bool protect);
void EnableSessionLock();
void EnableFlashInterrupt();
void ClearErrors();
/* The Device is powered by a 2.8V LDO. This allows us to perform writes to the
* Flash 32 bits at once. */