666 lines
16 KiB
C
666 lines
16 KiB
C
/*
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* Copyright (c) 2009, Google Inc.
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* All rights reserved.
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*
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* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <debug.h>
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#include <string.h>
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#include <stdlib.h>
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#include <platform.h>
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#include <target.h>
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#include <kernel/thread.h>
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#include <kernel/event.h>
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#include <dev/udc.h>
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#include "fastboot.h"
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#ifdef USB30_SUPPORT
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#include <usb30_udc.h>
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#endif
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typedef struct
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{
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int (*udc_init)(struct udc_device *devinfo);
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int (*udc_register_gadget)(struct udc_gadget *gadget);
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int (*udc_start)(void);
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int (*udc_stop)(void);
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struct udc_endpoint *(*udc_endpoint_alloc)(unsigned type, unsigned maxpkt);
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void (*udc_endpoint_free)(struct udc_endpoint *ept);
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struct udc_request *(*udc_request_alloc)(void);
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void (*udc_request_free)(struct udc_request *req);
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int (*usb_read)(void *buf, unsigned len);
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int (*usb_write)(void *buf, unsigned len);
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} usb_controller_interface_t;
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usb_controller_interface_t usb_if;
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#define MAX_USBFS_BULK_SIZE (32 * 1024)
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#define MAX_USBSS_BULK_SIZE (0x1000000)
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void boot_linux(void *bootimg, unsigned sz);
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static void fastboot_notify(struct udc_gadget *gadget, unsigned event);
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static struct udc_endpoint *fastboot_endpoints[2];
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static struct udc_device surf_udc_device = {
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.vendor_id = 0x18d1,
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.product_id = 0xD00D,
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.version_id = 0x0100,
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.manufacturer = "Google",
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.product = "Android",
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};
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static struct udc_gadget fastboot_gadget = {
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.notify = fastboot_notify,
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.ifc_class = 0xff,
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.ifc_subclass = 0x42,
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.ifc_protocol = 0x03,
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.ifc_endpoints = 2,
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.ifc_string = "fastboot",
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.ept = fastboot_endpoints,
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};
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/* todo: give lk strtoul and nuke this */
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static unsigned hex2unsigned(const char *x)
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{
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unsigned n = 0;
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while(*x) {
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switch(*x) {
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case '0': case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9':
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n = (n << 4) | (*x - '0');
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break;
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case 'a': case 'b': case 'c':
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case 'd': case 'e': case 'f':
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n = (n << 4) | (*x - 'a' + 10);
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break;
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case 'A': case 'B': case 'C':
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case 'D': case 'E': case 'F':
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n = (n << 4) | (*x - 'A' + 10);
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break;
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default:
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return n;
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}
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x++;
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}
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return n;
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}
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struct fastboot_cmd {
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struct fastboot_cmd *next;
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const char *prefix;
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unsigned prefix_len;
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void (*handle)(const char *arg, void *data, unsigned sz);
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};
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struct fastboot_var {
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struct fastboot_var *next;
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const char *name;
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const char *value;
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};
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static struct fastboot_cmd *cmdlist;
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void fastboot_register(const char *prefix,
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void (*handle)(const char *arg, void *data, unsigned sz))
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{
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struct fastboot_cmd *cmd;
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cmd = malloc(sizeof(*cmd));
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if (cmd) {
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cmd->prefix = prefix;
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cmd->prefix_len = strlen(prefix);
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cmd->handle = handle;
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cmd->next = cmdlist;
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cmdlist = cmd;
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}
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}
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static struct fastboot_var *varlist;
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void fastboot_publish(const char *name, const char *value)
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{
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struct fastboot_var *var;
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var = malloc(sizeof(*var));
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if (var) {
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var->name = name;
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var->value = value;
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var->next = varlist;
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varlist = var;
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}
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}
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static event_t usb_online;
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static event_t txn_done;
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static struct udc_endpoint *in, *out;
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static struct udc_request *req;
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int txn_status;
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static void *download_base;
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static unsigned download_max;
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static unsigned download_size;
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#define STATE_OFFLINE 0
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#define STATE_COMMAND 1
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#define STATE_COMPLETE 2
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#define STATE_ERROR 3
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static unsigned fastboot_state = STATE_OFFLINE;
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static void req_complete(struct udc_request *req, unsigned actual, int status)
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{
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txn_status = status;
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req->length = actual;
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event_signal(&txn_done, 0);
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}
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#ifdef USB30_SUPPORT
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static int usb30_usb_read(void *_buf, unsigned len)
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{
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int r;
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struct udc_request req;
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uint32_t xfer;
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int count = 0;
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uint32_t trans_len = len;
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const char *buf = _buf;
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ASSERT(buf);
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ASSERT(len);
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if (fastboot_state == STATE_ERROR)
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goto oops;
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dprintf(SPEW, "usb_read(): len = %d\n", len);
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while (len > 0)
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{
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xfer = (len > MAX_USBSS_BULK_SIZE) ? MAX_USBSS_BULK_SIZE : len;
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req.buf = (void*) PA((addr_t)buf);
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req.length = xfer;
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req.complete = req_complete;
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r = usb30_udc_request_queue(out, &req);
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if (r < 0)
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{
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dprintf(CRITICAL, "usb_read() queue failed. r = %d\n", r);
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goto oops;
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}
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event_wait(&txn_done);
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if (txn_status < 0)
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{
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dprintf(CRITICAL, "usb_read() transaction failed. txn_status = %d\n",
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txn_status);
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goto oops;
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}
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count += req.length;
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buf += req.length;
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len -= req.length;
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/* note: req.length is update by callback to reflect the amount of data
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* actually read.
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*/
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dprintf(SPEW, "usb_read(): DONE. req.length = %d\n\n", req.length);
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/* For USB3.0 if the data transfer is less than MaxpacketSize, its
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* short packet and DWC layer generates transfer complete. App layer
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* shold handle this and continue trasnferring the data instead of treating
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* this as a transfer complete. This case is not applicable for transfers
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* which involve protocol communication to exchange information whose length
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* is always equal to MAX_RSP_SIZE. This check ensures that we dont abort
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* data transfers on short packet.
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*/
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if (req.length != xfer && trans_len == MAX_RSP_SIZE) break;
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}
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/* invalidate any cached buf data (controller updates main memory) */
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arch_invalidate_cache_range((addr_t) _buf, count);
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return count;
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oops:
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fastboot_state = STATE_ERROR;
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dprintf(CRITICAL, "usb_read(): DONE: ERROR: len = %d\n", len);
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return -1;
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}
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static int usb30_usb_write(void *buf, unsigned len)
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{
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int r;
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struct udc_request req;
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ASSERT(buf);
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ASSERT(len);
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if (fastboot_state == STATE_ERROR)
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goto oops;
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dprintf(SPEW, "usb_write(): len = %d str = %s\n", len, (char *) buf);
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/* flush buffer to main memory before giving to udc */
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arch_clean_invalidate_cache_range((addr_t) buf, len);
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req.buf = (void*) PA((addr_t)buf);
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req.length = len;
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req.complete = req_complete;
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r = usb30_udc_request_queue(in, &req);
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if (r < 0) {
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dprintf(CRITICAL, "usb_write() queue failed. r = %d\n", r);
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goto oops;
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}
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event_wait(&txn_done);
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dprintf(SPEW, "usb_write(): DONE: len = %d req->length = %d str = %s\n",
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len, req.length, (char *) buf);
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if (txn_status < 0) {
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dprintf(CRITICAL, "usb_write() transaction failed. txn_status = %d\n",
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txn_status);
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goto oops;
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}
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return req.length;
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oops:
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fastboot_state = STATE_ERROR;
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dprintf(CRITICAL, "usb_write(): DONE: ERROR: len = %d\n", len);
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return -1;
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}
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#endif
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static int hsusb_usb_read(void *_buf, unsigned len)
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{
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int r;
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unsigned xfer;
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unsigned char *buf = _buf;
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int count = 0;
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if (fastboot_state == STATE_ERROR)
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goto oops;
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while (len > 0) {
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xfer = (len > MAX_USBFS_BULK_SIZE) ? MAX_USBFS_BULK_SIZE : len;
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req->buf = (unsigned char *)PA((addr_t)buf);
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req->length = xfer;
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req->complete = req_complete;
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r = udc_request_queue(out, req);
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if (r < 0) {
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dprintf(INFO, "usb_read() queue failed\n");
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goto oops;
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}
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event_wait(&txn_done);
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if (txn_status < 0) {
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dprintf(INFO, "usb_read() transaction failed\n");
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goto oops;
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}
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count += req->length;
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buf += req->length;
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len -= req->length;
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/* short transfer? */
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if (req->length != xfer) break;
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}
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/*
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* Force reload of buffer from memory
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* since transaction is complete now.
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*/
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arch_invalidate_cache_range((addr_t)_buf, count);
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return count;
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oops:
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fastboot_state = STATE_ERROR;
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return -1;
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}
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static int hsusb_usb_write(void *buf, unsigned len)
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{
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int r;
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uint32_t xfer;
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unsigned char *_buf = buf;
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int count = 0;
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if (fastboot_state == STATE_ERROR)
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goto oops;
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while (len > 0) {
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xfer = (len > MAX_USBFS_BULK_SIZE) ? MAX_USBFS_BULK_SIZE : len;
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req->buf = (unsigned char *)PA((addr_t)_buf);
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req->length = xfer;
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req->complete = req_complete;
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r = udc_request_queue(in, req);
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if (r < 0) {
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dprintf(INFO, "usb_write() queue failed\n");
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goto oops;
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}
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event_wait(&txn_done);
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if (txn_status < 0) {
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dprintf(INFO, "usb_write() transaction failed\n");
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goto oops;
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}
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count += req->length;
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_buf += req->length;
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len -= req->length;
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/* short transfer? */
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if (req->length != xfer) break;
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}
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return count;
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oops:
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fastboot_state = STATE_ERROR;
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return -1;
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}
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void fastboot_ack(const char *code, const char *reason)
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{
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STACKBUF_DMA_ALIGN(response, MAX_RSP_SIZE);
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if (fastboot_state != STATE_COMMAND)
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return;
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if (reason == 0)
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reason = "";
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snprintf((char *)response, MAX_RSP_SIZE, "%s%s", code, reason);
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fastboot_state = STATE_COMPLETE;
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usb_if.usb_write(response, strlen((const char *)response));
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}
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void fastboot_info(const char *reason)
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{
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STACKBUF_DMA_ALIGN(response, MAX_RSP_SIZE);
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if (fastboot_state != STATE_COMMAND)
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return;
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if (reason == 0)
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return;
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snprintf((char *)response, MAX_RSP_SIZE, "INFO%s", reason);
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usb_if.usb_write(response, strlen((const char *)response));
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}
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void fastboot_fail(const char *reason)
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{
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fastboot_ack("FAIL", reason);
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}
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void fastboot_okay(const char *info)
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{
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fastboot_ack("OKAY", info);
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}
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static void getvar_all()
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{
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struct fastboot_var *var;
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char getvar_all[64];
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for (var = varlist; var; var = var->next)
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{
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strlcpy((char *) getvar_all, var->name, sizeof(getvar_all));
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strlcat((char *) getvar_all, ":", sizeof(getvar_all));
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strlcat((char *) getvar_all, var->value, sizeof(getvar_all));
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fastboot_info(getvar_all);
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memset((void *) getvar_all, '\0', sizeof(getvar_all));
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}
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fastboot_okay("");
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}
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static void cmd_getvar(const char *arg, void *data, unsigned sz)
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{
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struct fastboot_var *var;
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if (!strncmp("all", arg, strlen(arg)))
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{
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getvar_all();
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return;
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}
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for (var = varlist; var; var = var->next) {
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if (!strcmp(var->name, arg)) {
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fastboot_okay(var->value);
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return;
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}
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}
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fastboot_okay("");
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}
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static void cmd_download(const char *arg, void *data, unsigned sz)
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{
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STACKBUF_DMA_ALIGN(response, MAX_RSP_SIZE);
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unsigned len = hex2unsigned(arg);
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int r;
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download_size = 0;
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if (len > download_max) {
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fastboot_fail("data too large");
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return;
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}
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snprintf((char *)response, MAX_RSP_SIZE, "DATA%08x", len);
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if (usb_if.usb_write(response, strlen((const char *)response)) < 0)
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return;
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/*
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* Discard the cache contents before starting the download
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*/
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arch_invalidate_cache_range((addr_t) download_base, len);
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r = usb_if.usb_read(download_base, len);
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if ((r < 0) || ((unsigned) r != len)) {
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fastboot_state = STATE_ERROR;
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return;
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}
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download_size = len;
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fastboot_okay("");
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}
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static void fastboot_command_loop(void)
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{
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struct fastboot_cmd *cmd;
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int r;
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dprintf(INFO,"fastboot: processing commands\n");
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uint8_t *buffer = (uint8_t *)memalign(CACHE_LINE, ROUNDUP(4096, CACHE_LINE));
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if (!buffer)
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{
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dprintf(CRITICAL, "Could not allocate memory for fastboot buffer\n.");
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ASSERT(0);
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}
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again:
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while (fastboot_state != STATE_ERROR) {
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/* Read buffer must be cleared first. If buffer is not cleared,
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* the original data in buf trailing the received command is
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* interpreted as part of the command.
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*/
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memset(buffer, 0, MAX_RSP_SIZE);
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arch_clean_invalidate_cache_range((addr_t) buffer, MAX_RSP_SIZE);
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r = usb_if.usb_read(buffer, MAX_RSP_SIZE);
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if (r < 0) break;
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buffer[r] = 0;
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dprintf(INFO,"fastboot: %s\n", buffer);
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fastboot_state = STATE_COMMAND;
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for (cmd = cmdlist; cmd; cmd = cmd->next) {
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if (memcmp(buffer, cmd->prefix, cmd->prefix_len))
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continue;
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cmd->handle((const char*) buffer + cmd->prefix_len,
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(void*) download_base, download_size);
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if (fastboot_state == STATE_COMMAND)
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fastboot_fail("unknown reason");
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goto again;
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}
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fastboot_fail("unknown command");
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}
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fastboot_state = STATE_OFFLINE;
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dprintf(INFO,"fastboot: oops!\n");
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free(buffer);
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}
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static int fastboot_handler(void *arg)
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{
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for (;;) {
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event_wait(&usb_online);
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fastboot_command_loop();
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}
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return 0;
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}
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static void fastboot_notify(struct udc_gadget *gadget, unsigned event)
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{
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if (event == UDC_EVENT_ONLINE) {
|
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event_signal(&usb_online, 0);
|
|
}
|
|
}
|
|
|
|
int fastboot_init(void *base, unsigned size)
|
|
{
|
|
char sn_buf[13];
|
|
thread_t *thr;
|
|
dprintf(INFO, "fastboot_init()\n");
|
|
|
|
download_base = base;
|
|
download_max = size;
|
|
|
|
/* target specific initialization before going into fastboot. */
|
|
target_fastboot_init();
|
|
|
|
/* setup serialno */
|
|
target_serialno((unsigned char *) sn_buf);
|
|
dprintf(SPEW,"serial number: %s\n",sn_buf);
|
|
surf_udc_device.serialno = sn_buf;
|
|
|
|
if(!strcmp(target_usb_controller(), "dwc"))
|
|
{
|
|
#ifdef USB30_SUPPORT
|
|
surf_udc_device.t_usb_if = target_usb30_init();
|
|
|
|
/* initialize udc functions to use dwc controller */
|
|
usb_if.udc_init = usb30_udc_init;
|
|
usb_if.udc_register_gadget = usb30_udc_register_gadget;
|
|
usb_if.udc_start = usb30_udc_start;
|
|
usb_if.udc_stop = usb30_udc_stop;
|
|
|
|
usb_if.udc_endpoint_alloc = usb30_udc_endpoint_alloc;
|
|
usb_if.udc_request_alloc = usb30_udc_request_alloc;
|
|
usb_if.udc_request_free = usb30_udc_request_free;
|
|
|
|
usb_if.usb_read = usb30_usb_read;
|
|
usb_if.usb_write = usb30_usb_write;
|
|
#else
|
|
dprintf(CRITICAL, "USB30 needs to be enabled for this target.\n");
|
|
ASSERT(0);
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
/* initialize udc functions to use the default chipidea controller */
|
|
usb_if.udc_init = udc_init;
|
|
usb_if.udc_register_gadget = udc_register_gadget;
|
|
usb_if.udc_start = udc_start;
|
|
usb_if.udc_stop = udc_stop;
|
|
|
|
usb_if.udc_endpoint_alloc = udc_endpoint_alloc;
|
|
usb_if.udc_request_alloc = udc_request_alloc;
|
|
usb_if.udc_request_free = udc_request_free;
|
|
|
|
usb_if.usb_read = hsusb_usb_read;
|
|
usb_if.usb_write = hsusb_usb_write;
|
|
}
|
|
|
|
/* register udc device */
|
|
usb_if.udc_init(&surf_udc_device);
|
|
|
|
event_init(&usb_online, 0, EVENT_FLAG_AUTOUNSIGNAL);
|
|
event_init(&txn_done, 0, EVENT_FLAG_AUTOUNSIGNAL);
|
|
|
|
in = usb_if.udc_endpoint_alloc(UDC_TYPE_BULK_IN, 512);
|
|
if (!in)
|
|
goto fail_alloc_in;
|
|
out = usb_if.udc_endpoint_alloc(UDC_TYPE_BULK_OUT, 512);
|
|
if (!out)
|
|
goto fail_alloc_out;
|
|
|
|
fastboot_endpoints[0] = in;
|
|
fastboot_endpoints[1] = out;
|
|
|
|
req = usb_if.udc_request_alloc();
|
|
if (!req)
|
|
goto fail_alloc_req;
|
|
|
|
/* register gadget */
|
|
if (usb_if.udc_register_gadget(&fastboot_gadget))
|
|
goto fail_udc_register;
|
|
|
|
fastboot_register("getvar:", cmd_getvar);
|
|
fastboot_register("download:", cmd_download);
|
|
fastboot_publish("version", "0.5");
|
|
|
|
thr = thread_create("fastboot", fastboot_handler, 0, DEFAULT_PRIORITY, 4096);
|
|
if (!thr)
|
|
{
|
|
goto fail_alloc_in;
|
|
}
|
|
thread_resume(thr);
|
|
|
|
usb_if.udc_start();
|
|
|
|
return 0;
|
|
|
|
fail_udc_register:
|
|
usb_if.udc_request_free(req);
|
|
fail_alloc_req:
|
|
usb_if.udc_endpoint_free(out);
|
|
fail_alloc_out:
|
|
usb_if.udc_endpoint_free(in);
|
|
fail_alloc_in:
|
|
return -1;
|
|
}
|
|
|
|
void fastboot_stop(void)
|
|
{
|
|
usb_if.udc_stop();
|
|
}
|