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supervisor: Add supervisor.set_usb_identification() function

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This commit is contained in:
s-ol 2022-04-05 19:53:54 +02:00
parent 7ad35bf67d
commit 0b525a285a
4 changed files with 111 additions and 15 deletions
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64
shared-bindings/supervisor/__init__.c
View File

@ -38,6 +38,7 @@
#include "supervisor/shared/traceback.h"
#include "supervisor/shared/translate.h"
#include "supervisor/shared/workflow.h"
#include "supervisor/usb.h"
#include "shared-bindings/microcontroller/__init__.h"
#include "shared-bindings/supervisor/__init__.h"
@ -311,6 +312,66 @@ STATIC mp_obj_t supervisor_reset_terminal(mp_obj_t x_pixels, mp_obj_t y_pixels)
}
MP_DEFINE_CONST_FUN_OBJ_2(supervisor_reset_terminal_obj, supervisor_reset_terminal);
#if CIRCUITPY_USB
//| def set_usb_identification(manufacturer: Optional[str] = None, product: Optional[str] = None, vid: int = -1, pid: int = -1) -> None:
//| """Override identification constants in the USB Device Descriptor.
//|
//| If passed, `manufacturer` and `product` must be ASCII strings (or buffers) of at most 126
//| characters. Any omitted arguments will be left at their default values.
//|
//| This method must be called in boot.py to have any effect."""
//| ...
//|
STATIC mp_obj_t supervisor_set_usb_identification(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_manufacturer, MP_ARG_OBJ, {.u_rom_obj = mp_const_none} },
{ MP_QSTR_product, MP_ARG_OBJ, {.u_rom_obj = mp_const_none} },
{ MP_QSTR_vid, MP_ARG_INT, {.u_int = -1} },
{ MP_QSTR_pid, MP_ARG_INT, {.u_int = -1} },
};
struct {
mp_arg_val_t manufacturer;
mp_arg_val_t product;
mp_arg_val_t vid;
mp_arg_val_t pid;
} args;
mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, (mp_arg_val_t *)&args);
if (!usb_identification_allocation) {
usb_identification_allocation = allocate_memory(sizeof(usb_identification_t), false, true);
}
usb_identification_t *identification = (usb_identification_t *)usb_identification_allocation->ptr;
mp_arg_validate_int_range(args.vid.u_int, -1, (1 << 16) - 1, MP_QSTR_vid);
mp_arg_validate_int_range(args.pid.u_int, -1, (1 << 16) - 1, MP_QSTR_pid);
identification->vid = args.vid.u_int > -1 ? args.vid.u_int : USB_VID;
identification->pid = args.pid.u_int > -1 ? args.pid.u_int : USB_PID;
mp_buffer_info_t info;
if (args.manufacturer.u_obj != mp_const_none) {
mp_get_buffer_raise(args.manufacturer.u_obj, &info, MP_BUFFER_READ);
mp_arg_validate_length_range(info.len, 0, 126, MP_QSTR_manufacturer);
memcpy(identification->manufacturer_name, info.buf, info.len);
identification->manufacturer_name[info.len] = 0;
} else {
memcpy(identification->manufacturer_name, USB_MANUFACTURER, sizeof(USB_MANUFACTURER));
}
if (args.product.u_obj != mp_const_none) {
mp_get_buffer_raise(args.product.u_obj, &info, MP_BUFFER_READ);
mp_arg_validate_length_range(info.len, 0, 126, MP_QSTR_product);
memcpy(identification->product_name, info.buf, info.len);
identification->product_name[info.len] = 0;
} else {
memcpy(identification->product_name, USB_MANUFACTURER, sizeof(USB_MANUFACTURER));
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_KW(supervisor_set_usb_identification_obj, 0, supervisor_set_usb_identification);
#endif
STATIC const mp_rom_map_elem_t supervisor_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_supervisor) },
{ MP_ROM_QSTR(MP_QSTR_enable_autoreload), MP_ROM_PTR(&supervisor_enable_autoreload_obj) },
@ -325,6 +386,9 @@ STATIC const mp_rom_map_elem_t supervisor_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR_get_previous_traceback), MP_ROM_PTR(&supervisor_get_previous_traceback_obj) },
{ MP_ROM_QSTR(MP_QSTR_disable_ble_workflow), MP_ROM_PTR(&supervisor_disable_ble_workflow_obj) },
{ MP_ROM_QSTR(MP_QSTR_reset_terminal), MP_ROM_PTR(&supervisor_reset_terminal_obj) },
#if CIRCUITPY_USB
{ MP_ROM_QSTR(MP_QSTR_set_usb_identification), MP_ROM_PTR(&supervisor_set_usb_identification_obj) },
#endif
};
STATIC MP_DEFINE_CONST_DICT(supervisor_module_globals, supervisor_module_globals_table);

28
supervisor/shared/usb/usb.c
View File

@ -118,9 +118,11 @@ void usb_set_defaults(void) {
#endif
};
supervisor_allocation *usb_identification_allocation;
// Some dynamic USB data must be saved after boot.py. How much is needed?
size_t usb_boot_py_data_size(void) {
size_t size = 0;
size_t size = sizeof(usb_identification_t);
#if CIRCUITPY_USB_HID
size += usb_hid_report_descriptor_length();
@ -131,6 +133,22 @@ size_t usb_boot_py_data_size(void) {
// Fill in the data to save.
void usb_get_boot_py_data(uint8_t *temp_storage, size_t temp_storage_size) {
if (usb_identification_allocation) {
memcpy(temp_storage, usb_identification_allocation->ptr, sizeof(usb_identification_t));
free_memory(usb_identification_allocation);
} else {
usb_identification_t defaults = {
.vid = USB_VID,
.pid = USB_PID,
.manufacturer_name = USB_MANUFACTURER,
.product_name = USB_PRODUCT,
};
memcpy(temp_storage, &defaults, sizeof(defaults));
}
temp_storage += sizeof(usb_identification_t);
temp_storage_size -= sizeof(usb_identification_t);
#if CIRCUITPY_USB_HID
usb_hid_build_report_descriptor(temp_storage, temp_storage_size);
#endif
@ -138,12 +156,18 @@ void usb_get_boot_py_data(uint8_t *temp_storage, size_t temp_storage_size) {
// After VM is gone, save data into non-heap storage (storage_allocations).
void usb_return_boot_py_data(uint8_t *temp_storage, size_t temp_storage_size) {
usb_identification_t identification;
memcpy(&identification, temp_storage, sizeof(usb_identification_t));
temp_storage += sizeof(usb_identification_t);
temp_storage_size -= sizeof(usb_identification_t);
#if CIRCUITPY_USB_HID
usb_hid_save_report_descriptor(temp_storage, temp_storage_size);
#endif
// Now we can also build the rest of the descriptors and place them in storage_allocations.
usb_build_descriptors();
usb_build_descriptors(&identification);
}
// Call this when ready to run code.py or a REPL, and a VM has been started.

21
supervisor/shared/usb/usb_desc.c
View File

@ -68,9 +68,6 @@ static supervisor_allocation *device_descriptor_allocation;
static supervisor_allocation *configuration_descriptor_allocation;
static supervisor_allocation *string_descriptors_allocation;
static const char manufacturer_name[] = USB_MANUFACTURER;
static const char product_name[] = USB_PRODUCT;
// Serial number string is UID length * 2 (2 nibbles per byte) + 1 byte for null termination.
static char serial_number_hex_string[COMMON_HAL_MCU_PROCESSOR_UID_LENGTH * 2 + 1];
@ -113,23 +110,23 @@ static const uint8_t configuration_descriptor_template[] = {
0x32, // 8 bMaxPower 100mA
};
static void usb_build_device_descriptor(uint16_t vid, uint16_t pid) {
static void usb_build_device_descriptor(const usb_identification_t *identification) {
device_descriptor_allocation =
allocate_memory(align32_size(sizeof(device_descriptor_template)),
/*high_address*/ false, /*movable*/ false);
uint8_t *device_descriptor = (uint8_t *)device_descriptor_allocation->ptr;
memcpy(device_descriptor, device_descriptor_template, sizeof(device_descriptor_template));
device_descriptor[DEVICE_VID_LO_INDEX] = vid & 0xFF;
device_descriptor[DEVICE_VID_HI_INDEX] = vid >> 8;
device_descriptor[DEVICE_PID_LO_INDEX] = pid & 0xFF;
device_descriptor[DEVICE_PID_HI_INDEX] = pid >> 8;
device_descriptor[DEVICE_VID_LO_INDEX] = identification->vid & 0xFF;
device_descriptor[DEVICE_VID_HI_INDEX] = identification->vid >> 8;
device_descriptor[DEVICE_PID_LO_INDEX] = identification->pid & 0xFF;
device_descriptor[DEVICE_PID_HI_INDEX] = identification->pid >> 8;
usb_add_interface_string(current_interface_string, manufacturer_name);
usb_add_interface_string(current_interface_string, identification->manufacturer_name);
device_descriptor[DEVICE_MANUFACTURER_STRING_INDEX] = current_interface_string;
current_interface_string++;
usb_add_interface_string(current_interface_string, product_name);
usb_add_interface_string(current_interface_string, identification->product_name);
device_descriptor[DEVICE_PRODUCT_STRING_INDEX] = current_interface_string;
current_interface_string++;
@ -319,7 +316,7 @@ static void usb_build_interface_string_table(void) {
// After boot.py runs, the USB devices to be used have been chosen, and the descriptors can be set up.
// This is called after the VM is finished, because it uses storage_allocations.
void usb_build_descriptors(void) {
void usb_build_descriptors(const usb_identification_t *identification) {
uint8_t raw_id[COMMON_HAL_MCU_PROCESSOR_UID_LENGTH];
common_hal_mcu_processor_get_uid(raw_id);
@ -336,7 +333,7 @@ void usb_build_descriptors(void) {
current_interface_string = 1;
collected_interface_strings_length = 0;
usb_build_device_descriptor(USB_VID, USB_PID);
usb_build_device_descriptor(identification);
usb_build_configuration_descriptor();
usb_build_interface_string_table();
}

13
supervisor/usb.h
View File

@ -31,6 +31,8 @@
#include <stddef.h>
#include <stdint.h>
#include "supervisor/memory.h"
// Ports must call this as frequently as they can in order to keep the USB
// connection alive and responsive. Normally this is called from background
// tasks after the USB IRQ handler is executed, but in specific circumstances
@ -58,10 +60,19 @@ typedef struct {
size_t num_out_endpoints;
} descriptor_counts_t;
typedef struct {
uint16_t vid;
uint16_t pid;
char manufacturer_name[128];
char product_name[128];
} usb_identification_t;
extern supervisor_allocation *usb_identification_allocation;
// Shared implementation.
bool usb_enabled(void);
void usb_add_interface_string(uint8_t interface_string_index, const char str[]);
void usb_build_descriptors(void);
void usb_build_descriptors(const usb_identification_t *identification);
void usb_disconnect(void);
void usb_init(void);
void usb_set_defaults(void);