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trezor-mcu
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Bootloader - Switch from HID to WebUSB

This commit is contained in:
Karel Bilek 2017-12-17 04:36:47 +01:00 committed by Pavol Rusnak
parent cb067bd14c
commit a22abfe90b
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GPG Key ID: 91F3B339B9A02A3D
1 changed files with 50 additions and 83 deletions
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133
bootloader/usb.c
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@ -18,7 +18,6 @@
*/
#include <libopencm3/usb/usbd.h>
#include <libopencm3/usb/hid.h>
#include <libopencm3/stm32/flash.h>
#include <string.h>
@ -37,8 +36,16 @@
#include "secp256k1.h"
#include "memzero.h"
#include "debug.h"
#include "usb21_standard.h"
#include "webusb.h"
#include "winusb.h"
#define FIRMWARE_MAGIC "TRZR"
#define USB_INTERFACE_INDEX_MAIN 0
#define ENDPOINT_ADDRESS_IN (0x81)
#define ENDPOINT_ADDRESS_OUT (0x01)
@ -48,93 +55,54 @@ static bool old_was_unsigned;
static const struct usb_device_descriptor dev_descr = {
.bLength = USB_DT_DEVICE_SIZE,
.bDescriptorType = USB_DT_DEVICE,
.bcdUSB = 0x0200,
.bcdUSB = 0x0210,
.bDeviceClass = 0,
.bDeviceSubClass = 0,
.bDeviceProtocol = 0,
.bMaxPacketSize0 = 64,
.idVendor = 0x534c,
.idProduct = 0x0001,
.bcdDevice = 0x0100,
.bcdDevice = 0x0300,
.iManufacturer = 1,
.iProduct = 2,
.iSerialNumber = 3,
.bNumConfigurations = 1,
};
static const uint8_t hid_report_descriptor[] = {
0x06, 0x00, 0xff, // USAGE_PAGE (Vendor Defined)
0x09, 0x01, // USAGE (1)
0xa1, 0x01, // COLLECTION (Application)
0x09, 0x20, // USAGE (Input Report Data)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (255)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x40, // REPORT_COUNT (64)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x09, 0x21, // USAGE (Output Report Data)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (255)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x40, // REPORT_COUNT (64)
0x91, 0x02, // OUTPUT (Data,Var,Abs)
0xc0 // END_COLLECTION
};
static const struct {
struct usb_hid_descriptor hid_descriptor;
struct {
uint8_t bReportDescriptorType;
uint16_t wDescriptorLength;
} __attribute__((packed)) hid_report;
} __attribute__((packed)) hid_function = {
.hid_descriptor = {
.bLength = sizeof(hid_function),
.bDescriptorType = USB_DT_HID,
.bcdHID = 0x0111,
.bCountryCode = 0,
.bNumDescriptors = 1,
},
.hid_report = {
.bReportDescriptorType = USB_DT_REPORT,
.wDescriptorLength = sizeof(hid_report_descriptor),
}
};
static const struct usb_endpoint_descriptor hid_endpoints[2] = {{
static const struct usb_endpoint_descriptor endpoints[2] = {{
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = ENDPOINT_ADDRESS_IN,
.bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
.wMaxPacketSize = 64,
.bInterval = 1,
.bInterval = 2,
}, {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = ENDPOINT_ADDRESS_OUT,
.bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
.wMaxPacketSize = 64,
.bInterval = 1,
.bInterval = 2,
}};
static const struct usb_interface_descriptor hid_iface[] = {{
static const struct usb_interface_descriptor iface[] = {{
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0,
.bInterfaceNumber = USB_INTERFACE_INDEX_MAIN,
.bAlternateSetting = 0,
.bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceClass = USB_CLASS_VENDOR,
.bInterfaceSubClass = 0,
.bInterfaceProtocol = 0,
.iInterface = 0,
.endpoint = hid_endpoints,
.extra = &hid_function,
.extralen = sizeof(hid_function),
.endpoint = endpoints,
.extra = NULL,
.extralen = 0,
}};
static const struct usb_interface ifaces[] = {{
.num_altsetting = 1,
.altsetting = hid_iface,
.altsetting = iface,
}};
static const struct usb_config_descriptor config = {
@ -155,23 +123,6 @@ static const char *usb_strings[] = {
"", // empty serial
};
static int hid_control_request(usbd_device *dev, struct usb_setup_data *req, uint8_t **buf, uint16_t *len, usbd_control_complete_callback *complete)
{
(void)complete;
(void)dev;
if ((req->bmRequestType != 0x81) ||
(req->bRequest != USB_REQ_GET_DESCRIPTOR) ||
(req->wValue != 0x2200))
return 0;
/* Handle the HID report descriptor. */
*buf = (uint8_t *)hid_report_descriptor;
*len = sizeof(hid_report_descriptor);
return 1;
}
enum {
STATE_READY,
STATE_OPEN,
@ -315,8 +266,9 @@ static void restore_metadata(const uint8_t *backup)
flash_lock();
}
static void hid_rx_callback(usbd_device *dev, uint8_t ep)
static void rx_callback(usbd_device *dev, uint8_t ep)
{
debugLog(0, "", "rx_callback start");
(void)ep;
static uint8_t buf[64] __attribute__((aligned(4)));
static uint8_t towrite[4] __attribute__((aligned(4)));
@ -628,23 +580,39 @@ static void hid_rx_callback(usbd_device *dev, uint8_t ep)
}
static void hid_set_config(usbd_device *dev, uint16_t wValue)
static void set_config(usbd_device *dev, uint16_t wValue)
{
(void)wValue;
usbd_ep_setup(dev, ENDPOINT_ADDRESS_IN, USB_ENDPOINT_ATTR_INTERRUPT, 64, 0);
usbd_ep_setup(dev, ENDPOINT_ADDRESS_OUT, USB_ENDPOINT_ATTR_INTERRUPT, 64, hid_rx_callback);
usbd_register_control_callback(
dev,
USB_REQ_TYPE_STANDARD | USB_REQ_TYPE_INTERFACE,
USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT,
hid_control_request
);
usbd_ep_setup(dev, ENDPOINT_ADDRESS_IN, USB_ENDPOINT_ATTR_INTERRUPT, 64, 0);
usbd_ep_setup(dev, ENDPOINT_ADDRESS_OUT, USB_ENDPOINT_ATTR_INTERRUPT, 64, rx_callback);
debugLog(0, "", "set_config done");
}
static usbd_device *usbd_dev;
static uint8_t usbd_control_buffer[128];
static uint8_t usbd_control_buffer[256] __attribute__ ((aligned (2)));
static const struct usb_device_capability_descriptor* capabilities[] = {
(const struct usb_device_capability_descriptor*)&webusb_platform_capability_descriptor,
};
static const struct usb_bos_descriptor bos_descriptor = {
.bLength = USB_DT_BOS_SIZE,
.bDescriptorType = USB_DT_BOS,
.bNumDeviceCaps = sizeof(capabilities)/sizeof(capabilities[0]),
.capabilities = capabilities
};
void usbInit(void)
{
debugLog(0, "", "usb_init");
usbd_dev = usbd_init(&otgfs_usb_driver, &dev_descr, &config, usb_strings, sizeof(usb_strings)/sizeof(const char *), usbd_control_buffer, sizeof(usbd_control_buffer));
usbd_register_set_config_callback(usbd_dev, set_config);
usb21_setup(usbd_dev, &bos_descriptor);
static const char* origin_url = "trezor.io/start";
webusb_setup(usbd_dev, origin_url);
winusb_setup(usbd_dev, USB_INTERFACE_INDEX_MAIN);
}
void checkButtons(void)
{
@ -678,8 +646,7 @@ void checkButtons(void)
void usbLoop(bool firmware_present)
{
brand_new_firmware = !firmware_present;
usbd_dev = usbd_init(&otgfs_usb_driver, &dev_descr, &config, usb_strings, 3, usbd_control_buffer, sizeof(usbd_control_buffer));
usbd_register_set_config_callback(usbd_dev, hid_set_config);
usbInit();
for (;;) {
usbd_poll(usbd_dev);
if (brand_new_firmware && (flash_state == STATE_READY || flash_state == STATE_OPEN)) {