From be79b45f8c84bf6e685b408b2693f21d75d869c4 Mon Sep 17 00:00:00 2001 From: Vegard Storheil Eriksen Date: Sun, 9 Nov 2014 17:11:32 -0500 Subject: Moved files for each firmware build to its own directory. --- bootloader.cpp | 323 --------------------------------------------------------- 1 file changed, 323 deletions(-) delete mode 100644 bootloader.cpp (limited to 'bootloader.cpp') diff --git a/bootloader.cpp b/bootloader.cpp deleted file mode 100644 index 620e143..0000000 --- a/bootloader.cpp +++ /dev/null @@ -1,323 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include -#include - -static uint32_t& reset_reason = *(uint32_t*)0x10000000; -static const uint32_t* firmware_vtors = (uint32_t*)0x8002000; - -static bool do_reset; - -void reset() { - SCB.AIRCR = (0x5fa << 16) | (1 << 2); // SYSRESETREQ -} - -void chainload(uint32_t offset) { - SCB.VTOR = offset; - - asm volatile("ldr sp, [%0]; ldr %0, [%0, #4]; bx %0" :: "r" (offset)); -} - -auto report_desc = pack( - usage_page(0xff55), - usage(0xb007), - collection(Collection::Application, - logical_minimum(0), - logical_maximum(255), - report_size(8), - report_count(1), - - usage(0xb007), - input(0x02), // Status - - usage(0xb007), - feature(0x02), // Function - - usage(0xb007), - report_count(64), - output(0x02) // Data - ) -); - -auto dev_desc = device_desc(0x200, 0, 0, 0, 64, 0x1d50, 0x6084, 0x110, 1, 2, 3, 1); -auto conf_desc = configuration_desc(1, 1, 0, 0xc0, 0, - // HID interface. - interface_desc(0, 0, 1, 0x03, 0x00, 0x00, 0, - hid_desc(0x111, 0, 1, 0x22, sizeof(report_desc)), - endpoint_desc(0x81, 0x03, 64, 1) - ) -); - -desc_t dev_desc_p = {sizeof(dev_desc), (void*)&dev_desc}; -desc_t conf_desc_p = {sizeof(conf_desc), (void*)&conf_desc}; -desc_t report_desc_p = {sizeof(report_desc), (void*)&report_desc}; - -static Pin usb_dm = GPIOA[11]; -static Pin usb_dp = GPIOA[12]; -static Pin usb_pu = GPIOA[15]; - -static PinArray button_inputs = GPIOB.array(0, 10); -static PinArray button_leds = GPIOC.array(0, 10); - -static Pin led1 = GPIOA[8]; -static Pin led2 = GPIOA[9]; - -USB_f1 usb(USB, dev_desc_p, conf_desc_p); - -class Flashloader { - private: - bool state; - uint32_t addr; - - public: - Flashloader() : state(false) {} - - bool prepare() { - addr = 0x8002000; - state = true; - - // Unlock flash. - FLASH.KEYR = 0x45670123; - FLASH.KEYR = 0xCDEF89AB; - - return true; - } - - bool write_block(uint32_t size, void* data) { - if(!state) { - return false; - } - - if(size & 1) { - return false; - } - - if(addr + size > 0x8020000) { - return false; - } - - if(!(addr & (2048 - 1))) { - // Erase page. - - FLASH.CR = 1 << 1; // PER - FLASH.AR = addr; - FLASH.CR = (1 << 6) | (1 << 1); // STRT, PER - - while(FLASH.SR & (1 << 0)); // BSY - - FLASH.SR &= ~(1 << 5); // EOP - FLASH.CR = 0; - } - - uint16_t* src = (uint16_t*)data; - uint16_t* dest = (uint16_t*)addr; - - for(uint32_t n = 0; n < size; n += 2) { - FLASH.CR = 1 << 0; // PG - - *dest++ = *src++; - - while(FLASH.SR & (1 << 0)); // BSY - } - - - addr += size; - return true; - } - - bool finish() { - state = false; - - FLASH.CR = 1 << 7; // LOCK - - return true; - } -}; - -Flashloader flashloader; - -class HID_bootloader : public USB_HID { - public: - HID_bootloader(USB_generic& usbd, desc_t rdesc) : USB_HID(usbd, rdesc, 0, 1, 64) {} - - protected: - virtual bool set_output_report(uint32_t* buf, uint32_t len) { - if(len != 64) { - return false; - } - - return flashloader.write_block(len, buf); - } - - virtual bool set_feature_report(uint32_t* buf, uint32_t len) { - if(len != 1) { - return false; - } - - switch(*buf & 0xff) { - case 0: - return true; - - case 0x10: // Reset to bootloader - return false; // Not available in bootloader mode - - case 0x11: // Reset to runtime - do_reset = true; - return true; - - case 0x20: // Flash prepare - return flashloader.prepare(); - - case 0x21: // Flash finish - return flashloader.finish(); - - default: - return false; - } - } -}; - -HID_bootloader usb_hid(usb, report_desc_p); - -uint32_t serial_num() { - uint32_t* uid = (uint32_t*)0x1ffff7ac; - - return uid[0] * uid[1] * uid[2]; -} - -class USB_strings : public USB_class_driver { - private: - USB_generic& usb; - - public: - USB_strings(USB_generic& usbd) : usb(usbd) { - usb.register_driver(this); - } - - protected: - virtual SetupStatus handle_setup(uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint16_t wLength) { - // Get string descriptor. - if(bmRequestType == 0x80 && bRequest == 0x06 && (wValue & 0xff00) == 0x0300) { - const void* desc = nullptr; - uint16_t buf[9]; - - switch(wValue & 0xff) { - case 0: - desc = u"\u0304\u0409"; - break; - - case 1: - desc = u"\u0308zyp"; - break; - - case 2: - desc = u"\u0322arcin bootloader"; - break; - - case 3: - { - buf[0] = 0x0312; - uint32_t id = serial_num(); - for(int i = 8; i > 0; i--) { - buf[i] = (id & 0xf) > 9 ? 'A' + (id & 0xf) - 0xa : '0' + (id & 0xf); - id >>= 4; - } - desc = buf; - } - break; - } - - if(!desc) { - return SetupStatus::Unhandled; - } - - uint8_t len = *(uint8_t*)desc; - - if(len > wLength) { - len = wLength; - } - - usb.write(0, (uint32_t*)desc, len); - - return SetupStatus::Ok; - } - - return SetupStatus::Unhandled; - } -}; - -USB_strings usb_strings(usb); - -bool normal_boot() { - // Check if this was a reset-to-bootloader. - if(reset_reason == 0xb007) { - reset_reason = 0; - return false; - } - - // Check buttons. - if((button_inputs.get() ^ 0x7ff) == ((1 << 1) | (1 << 0))) { - return false; - } - - // Check that reset vector is a valid flash address. - uint32_t reset_vector = firmware_vtors[1]; - if(reset_vector < 0x8002000 || reset_vector >= 0x8020000) { - return false; - } - - // No reason to enter bootloader. - return true; -} - -int main() { - RCC.enable(RCC.GPIOA); - RCC.enable(RCC.GPIOB); - RCC.enable(RCC.GPIOC); - - button_inputs.set_mode(Pin::Input); - button_inputs.set_pull(Pin::PullUp); - - button_leds.set_mode(Pin::Output); - - led1.set_mode(Pin::Output); - led2.set_mode(Pin::Output); - - if(normal_boot()) { - chainload(0x8002000); - } - - rcc_init(); - - // Initialize system timer. - STK.LOAD = 72000000 / 8 / 1000; // 1000 Hz. - STK.CTRL = 0x03; - - usb_dm.set_mode(Pin::AF); - usb_dm.set_af(14); - usb_dp.set_mode(Pin::AF); - usb_dp.set_af(14); - - RCC.enable(RCC.USB); - - usb.init(); - - usb_pu.set_mode(Pin::Output); - usb_pu.on(); - - - while(1) { - usb.process(); - - if(do_reset) { - Time::sleep(10); - reset(); - } - - GPIOC[0].set(Time::time() & 512); - } -} -- cgit v1.2.3