diff options
Diffstat (limited to 'roms/u-boot/drivers/usb/gadget/g_dnl.c')
| -rw-r--r-- | roms/u-boot/drivers/usb/gadget/g_dnl.c | 318 |
1 files changed, 318 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/usb/gadget/g_dnl.c b/roms/u-boot/drivers/usb/gadget/g_dnl.c new file mode 100644 index 000000000..afb7b74f3 --- /dev/null +++ b/roms/u-boot/drivers/usb/gadget/g_dnl.c @@ -0,0 +1,318 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * g_dnl.c -- USB Downloader Gadget + * + * Copyright (C) 2012 Samsung Electronics + * Lukasz Majewski <l.majewski@samsung.com> + */ + +#include <common.h> +#include <log.h> +#include <malloc.h> + +#include <mmc.h> +#include <part.h> +#include <usb.h> + +#include <g_dnl.h> +#include <usb_mass_storage.h> +#include <dfu.h> +#include <thor.h> + +#include <env_callback.h> + +#include "gadget_chips.h" +#include "composite.c" + +/* + * One needs to define the following: + * CONFIG_USB_GADGET_VENDOR_NUM + * CONFIG_USB_GADGET_PRODUCT_NUM + * CONFIG_USB_GADGET_MANUFACTURER + * at e.g. ./configs/<board>_defconfig + */ + +#define STRING_MANUFACTURER 25 +#define STRING_PRODUCT 2 +/* Index of String Descriptor describing this configuration */ +#define STRING_USBDOWN 2 +/* Index of String serial */ +#define STRING_SERIAL 3 +#define MAX_STRING_SERIAL 256 +/* Number of supported configurations */ +#define CONFIGURATION_NUMBER 1 + +#define DRIVER_VERSION "usb_dnl 2.0" + +static const char product[] = "USB download gadget"; +static char g_dnl_serial[MAX_STRING_SERIAL]; +static const char manufacturer[] = CONFIG_USB_GADGET_MANUFACTURER; + +void g_dnl_set_serialnumber(char *s) +{ + memset(g_dnl_serial, 0, MAX_STRING_SERIAL); + strncpy(g_dnl_serial, s, MAX_STRING_SERIAL - 1); +} + +static struct usb_device_descriptor device_desc = { + .bLength = sizeof device_desc, + .bDescriptorType = USB_DT_DEVICE, + + .bcdUSB = __constant_cpu_to_le16(0x0200), + .bDeviceClass = USB_CLASS_PER_INTERFACE, + .bDeviceSubClass = 0, /*0x02:CDC-modem , 0x00:CDC-serial*/ + + .idVendor = __constant_cpu_to_le16(CONFIG_USB_GADGET_VENDOR_NUM), + .idProduct = __constant_cpu_to_le16(CONFIG_USB_GADGET_PRODUCT_NUM), + /* .iProduct = DYNAMIC */ + /* .iSerialNumber = DYNAMIC */ + .bNumConfigurations = 1, +}; + +/* + * static strings, in UTF-8 + * IDs for those strings are assigned dynamically at g_dnl_bind() + */ +static struct usb_string g_dnl_string_defs[] = { + {.s = manufacturer}, + {.s = product}, + {.s = g_dnl_serial}, + { } /* end of list */ +}; + +static struct usb_gadget_strings g_dnl_string_tab = { + .language = 0x0409, /* en-us */ + .strings = g_dnl_string_defs, +}; + +static struct usb_gadget_strings *g_dnl_composite_strings[] = { + &g_dnl_string_tab, + NULL, +}; + +void g_dnl_set_product(const char *s) +{ + if (s) + g_dnl_string_defs[1].s = s; + else + g_dnl_string_defs[1].s = product; +} + +static int g_dnl_unbind(struct usb_composite_dev *cdev) +{ + struct usb_gadget *gadget = cdev->gadget; + + debug("%s: calling usb_gadget_disconnect for " + "controller '%s'\n", __func__, gadget->name); + usb_gadget_disconnect(gadget); + + return 0; +} + +static inline struct g_dnl_bind_callback *g_dnl_bind_callback_first(void) +{ + return ll_entry_start(struct g_dnl_bind_callback, + g_dnl_bind_callbacks); +} + +static inline struct g_dnl_bind_callback *g_dnl_bind_callback_end(void) +{ + return ll_entry_end(struct g_dnl_bind_callback, + g_dnl_bind_callbacks); +} + +static int g_dnl_do_config(struct usb_configuration *c) +{ + const char *s = c->cdev->driver->name; + struct g_dnl_bind_callback *callback = g_dnl_bind_callback_first(); + + debug("%s: configuration: 0x%p composite dev: 0x%p\n", + __func__, c, c->cdev); + + for (; callback != g_dnl_bind_callback_end(); callback++) + if (!strcmp(s, callback->usb_function_name)) + return callback->fptr(c); + return -ENODEV; +} + +static int g_dnl_config_register(struct usb_composite_dev *cdev) +{ + struct usb_configuration *config; + const char *name = "usb_dnload"; + + config = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*config)); + if (!config) + return -ENOMEM; + + memset(config, 0, sizeof(*config)); + + config->label = name; + config->bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER; + config->bConfigurationValue = CONFIGURATION_NUMBER; + config->iConfiguration = STRING_USBDOWN; + config->bind = g_dnl_do_config; + + return usb_add_config(cdev, config); +} + +__weak +int board_usb_init(int index, enum usb_init_type init) +{ + return 0; +} + +__weak +int board_usb_cleanup(int index, enum usb_init_type init) +{ + return 0; +} + +__weak +int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name) +{ + return 0; +} + +__weak int g_dnl_get_board_bcd_device_number(int gcnum) +{ + return gcnum; +} + +__weak int g_dnl_board_usb_cable_connected(void) +{ + return -EOPNOTSUPP; +} + +static bool g_dnl_detach_request; + +bool g_dnl_detach(void) +{ + return g_dnl_detach_request; +} + +void g_dnl_trigger_detach(void) +{ + g_dnl_detach_request = true; +} + +void g_dnl_clear_detach(void) +{ + g_dnl_detach_request = false; +} + +static int g_dnl_get_bcd_device_number(struct usb_composite_dev *cdev) +{ + struct usb_gadget *gadget = cdev->gadget; + int gcnum; + + gcnum = usb_gadget_controller_number(gadget); + if (gcnum > 0) + gcnum += 0x200; + + return g_dnl_get_board_bcd_device_number(gcnum); +} + +/** + * Update internal serial number variable when the "serial#" env var changes. + * + * Handle all cases, even when flags == H_PROGRAMMATIC or op == env_op_delete. + */ +static int on_serialno(const char *name, const char *value, enum env_op op, + int flags) +{ + g_dnl_set_serialnumber((char *)value); + return 0; +} +U_BOOT_ENV_CALLBACK(serialno, on_serialno); + +static int g_dnl_bind(struct usb_composite_dev *cdev) +{ + struct usb_gadget *gadget = cdev->gadget; + int id, ret; + int gcnum; + + debug("%s: gadget: 0x%p cdev: 0x%p\n", __func__, gadget, cdev); + + id = usb_string_id(cdev); + + if (id < 0) + return id; + g_dnl_string_defs[0].id = id; + device_desc.iManufacturer = id; + + id = usb_string_id(cdev); + if (id < 0) + return id; + + g_dnl_string_defs[1].id = id; + device_desc.iProduct = id; + + g_dnl_bind_fixup(&device_desc, cdev->driver->name); + + if (strlen(g_dnl_serial)) { + id = usb_string_id(cdev); + if (id < 0) + return id; + + g_dnl_string_defs[2].id = id; + device_desc.iSerialNumber = id; + } + + ret = g_dnl_config_register(cdev); + if (ret) + goto error; + + gcnum = g_dnl_get_bcd_device_number(cdev); + if (gcnum >= 0) + device_desc.bcdDevice = cpu_to_le16(gcnum); + else { + debug("%s: controller '%s' not recognized\n", + __func__, gadget->name); + device_desc.bcdDevice = __constant_cpu_to_le16(0x9999); + } + + debug("%s: calling usb_gadget_connect for " + "controller '%s'\n", __func__, gadget->name); + usb_gadget_connect(gadget); + + return 0; + + error: + g_dnl_unbind(cdev); + return -ENOMEM; +} + +static struct usb_composite_driver g_dnl_driver = { + .name = NULL, + .dev = &device_desc, + .strings = g_dnl_composite_strings, + .max_speed = USB_SPEED_SUPER, + + .bind = g_dnl_bind, + .unbind = g_dnl_unbind, +}; + +/* + * NOTICE: + * Registering via USB function name won't be necessary after rewriting + * g_dnl to support multiple USB functions. + */ +int g_dnl_register(const char *name) +{ + int ret; + + debug("%s: g_dnl_driver.name = %s\n", __func__, name); + g_dnl_driver.name = name; + + ret = usb_composite_register(&g_dnl_driver); + if (ret) { + printf("%s: failed!, error: %d\n", __func__, ret); + return ret; + } + return 0; +} + +void g_dnl_unregister(void) +{ + usb_composite_unregister(&g_dnl_driver); +} |