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