X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fusb%2Fgadget%2Ff_fastboot.c;h=fc27dbe8de4996e6488adf0b436cf2d036317cc1;hb=c5c657644bc35fd6b3d6e5517698721e90646b8d;hp=ca01a018b5d13578a3fa36d1681f6818a30bb2b8;hpb=7c0e5d865ff0b86dfce492b656238919c659d756;p=oweals%2Fu-boot.git diff --git a/drivers/usb/gadget/f_fastboot.c b/drivers/usb/gadget/f_fastboot.c index ca01a018b5..fc27dbe8de 100644 --- a/drivers/usb/gadget/f_fastboot.c +++ b/drivers/usb/gadget/f_fastboot.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2008 - 2009 * Windriver, @@ -7,24 +8,18 @@ * * Copyright 2014 Linaro, Ltd. * Rob Herring - * - * SPDX-License-Identifier: GPL-2.0+ */ #include #include +#include #include +#include #include #include #include #include #include -#include #include -#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV -#include -#endif - -#define FASTBOOT_VERSION "0.4" #define FASTBOOT_INTERFACE_CLASS 0xff #define FASTBOOT_INTERFACE_SUB_CLASS 0x42 @@ -34,10 +29,12 @@ #define RX_ENDPOINT_MAXIMUM_PACKET_SIZE_1_1 (0x0040) #define TX_ENDPOINT_MAXIMUM_PACKET_SIZE (0x0040) -/* The 64 defined bytes plus \0 */ -#define RESPONSE_LEN (64 + 1) - #define EP_BUFFER_SIZE 4096 +/* + * EP_BUFFER_SIZE must always be an integral multiple of maxpacket size + * (64 or 512 or 1024), else we break on certain controllers like DWC3 + * that expect bulk OUT requests to be divisible by maxpacket size. + */ struct f_fastboot { struct usb_function usb_function; @@ -53,17 +50,13 @@ static inline struct f_fastboot *func_to_fastboot(struct usb_function *f) } static struct f_fastboot *fastboot_func; -static unsigned int download_size; -static unsigned int download_bytes; -static bool is_high_speed; static struct usb_endpoint_descriptor fs_ep_in = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = TX_ENDPOINT_MAXIMUM_PACKET_SIZE, - .bInterval = 0x00, + .wMaxPacketSize = cpu_to_le16(64), }; static struct usb_endpoint_descriptor fs_ep_out = { @@ -71,8 +64,15 @@ static struct usb_endpoint_descriptor fs_ep_out = { .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_OUT, .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = RX_ENDPOINT_MAXIMUM_PACKET_SIZE_1_1, - .bInterval = 0x00, + .wMaxPacketSize = cpu_to_le16(64), +}; + +static struct usb_endpoint_descriptor hs_ep_in = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(512), }; static struct usb_endpoint_descriptor hs_ep_out = { @@ -80,8 +80,7 @@ static struct usb_endpoint_descriptor hs_ep_out = { .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_OUT, .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = RX_ENDPOINT_MAXIMUM_PACKET_SIZE_2_0, - .bInterval = 0x00, + .wMaxPacketSize = cpu_to_le16(512), }; static struct usb_interface_descriptor interface_desc = { @@ -95,13 +94,28 @@ static struct usb_interface_descriptor interface_desc = { .bInterfaceProtocol = FASTBOOT_INTERFACE_PROTOCOL, }; -static struct usb_descriptor_header *fb_runtime_descs[] = { +static struct usb_descriptor_header *fb_fs_function[] = { (struct usb_descriptor_header *)&interface_desc, (struct usb_descriptor_header *)&fs_ep_in, + (struct usb_descriptor_header *)&fs_ep_out, +}; + +static struct usb_descriptor_header *fb_hs_function[] = { + (struct usb_descriptor_header *)&interface_desc, + (struct usb_descriptor_header *)&hs_ep_in, (struct usb_descriptor_header *)&hs_ep_out, NULL, }; +static struct usb_endpoint_descriptor * +fb_ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs, + struct usb_endpoint_descriptor *hs) +{ + if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) + return hs; + return fs; +} + /* * static strings, in UTF-8 */ @@ -123,7 +137,6 @@ static struct usb_gadget_strings *fastboot_strings[] = { }; static void rx_handler_command(struct usb_ep *ep, struct usb_request *req); -static int strcmp_l1(const char *s1, const char *s2); static void fastboot_complete(struct usb_ep *ep, struct usb_request *req) { @@ -162,9 +175,17 @@ static int fastboot_bind(struct usb_configuration *c, struct usb_function *f) return -ENODEV; f_fb->out_ep->driver_data = c->cdev; - hs_ep_out.bEndpointAddress = fs_ep_out.bEndpointAddress; + f->descriptors = fb_fs_function; - s = getenv("serial#"); + if (gadget_is_dualspeed(gadget)) { + /* Assume endpoint addresses are the same for both speeds */ + hs_ep_in.bEndpointAddress = fs_ep_in.bEndpointAddress; + hs_ep_out.bEndpointAddress = fs_ep_out.bEndpointAddress; + /* copy HS descriptors */ + f->hs_descriptors = fb_hs_function; + } + + s = env_get("serial#"); if (s) g_dnl_set_serialnumber((char *)s); @@ -221,18 +242,13 @@ static int fastboot_set_alt(struct usb_function *f, struct usb_composite_dev *cdev = f->config->cdev; struct usb_gadget *gadget = cdev->gadget; struct f_fastboot *f_fb = func_to_fastboot(f); + const struct usb_endpoint_descriptor *d; debug("%s: func: %s intf: %d alt: %d\n", __func__, f->name, interface, alt); - /* make sure we don't enable the ep twice */ - if (gadget->speed == USB_SPEED_HIGH) { - ret = usb_ep_enable(f_fb->out_ep, &hs_ep_out); - is_high_speed = true; - } else { - ret = usb_ep_enable(f_fb->out_ep, &fs_ep_out); - is_high_speed = false; - } + d = fb_ep_desc(gadget, &fs_ep_out, &hs_ep_out); + ret = usb_ep_enable(f_fb->out_ep, d); if (ret) { puts("failed to enable out ep\n"); return ret; @@ -246,7 +262,8 @@ static int fastboot_set_alt(struct usb_function *f, } f_fb->out_req->complete = rx_handler_command; - ret = usb_ep_enable(f_fb->in_ep, &fs_ep_in); + d = fb_ep_desc(gadget, &fs_ep_in, &hs_ep_in); + ret = usb_ep_enable(f_fb->in_ep, d); if (ret) { puts("failed to enable in ep\n"); goto err; @@ -287,7 +304,6 @@ static int fastboot_add(struct usb_configuration *c) } f_fb->usb_function.name = "f_fastboot"; - f_fb->usb_function.hs_descriptors = fb_runtime_descs; f_fb->usb_function.bind = fastboot_bind; f_fb->usb_function.unbind = fastboot_unbind; f_fb->usb_function.set_alt = fastboot_set_alt; @@ -330,97 +346,36 @@ static void compl_do_reset(struct usb_ep *ep, struct usb_request *req) do_reset(NULL, 0, 0, NULL); } -int __weak fb_set_reboot_flag(void) -{ - return -ENOSYS; -} - -static void cb_reboot(struct usb_ep *ep, struct usb_request *req) -{ - char *cmd = req->buf; - if (!strcmp_l1("reboot-bootloader", cmd)) { - if (fb_set_reboot_flag()) { - fastboot_tx_write_str("FAILCannot set reboot flag"); - return; - } - } - fastboot_func->in_req->complete = compl_do_reset; - fastboot_tx_write_str("OKAY"); -} - -static int strcmp_l1(const char *s1, const char *s2) +static unsigned int rx_bytes_expected(struct usb_ep *ep) { - if (!s1 || !s2) - return -1; - return strncmp(s1, s2, strlen(s1)); -} - -static void cb_getvar(struct usb_ep *ep, struct usb_request *req) -{ - char *cmd = req->buf; - char response[RESPONSE_LEN]; - const char *s; - size_t chars_left; - - strcpy(response, "OKAY"); - chars_left = sizeof(response) - strlen(response) - 1; - - strsep(&cmd, ":"); - if (!cmd) { - error("missing variable\n"); - fastboot_tx_write_str("FAILmissing var"); - return; - } - - if (!strcmp_l1("version", cmd)) { - strncat(response, FASTBOOT_VERSION, chars_left); - } else if (!strcmp_l1("bootloader-version", cmd)) { - strncat(response, U_BOOT_VERSION, chars_left); - } else if (!strcmp_l1("downloadsize", cmd) || - !strcmp_l1("max-download-size", cmd)) { - char str_num[12]; - - sprintf(str_num, "0x%08x", CONFIG_FASTBOOT_BUF_SIZE); - strncat(response, str_num, chars_left); - } else if (!strcmp_l1("serialno", cmd)) { - s = getenv("serial#"); - if (s) - strncat(response, s, chars_left); - else - strcpy(response, "FAILValue not set"); - } else { - error("unknown variable: %s\n", cmd); - strcpy(response, "FAILVariable not implemented"); - } - fastboot_tx_write_str(response); -} + int rx_remain = fastboot_data_remaining(); + unsigned int rem; + unsigned int maxpacket = ep->maxpacket; -static unsigned int rx_bytes_expected(unsigned int maxpacket) -{ - int rx_remain = download_size - download_bytes; - int rem = 0; - if (rx_remain < 0) + if (rx_remain <= 0) return 0; - if (rx_remain > EP_BUFFER_SIZE) + else if (rx_remain > EP_BUFFER_SIZE) return EP_BUFFER_SIZE; - if (rx_remain < maxpacket) { - rx_remain = maxpacket; - } else if (rx_remain % maxpacket != 0) { - rem = rx_remain % maxpacket; + + /* + * Some controllers e.g. DWC3 don't like OUT transfers to be + * not ending in maxpacket boundary. So just make them happy by + * always requesting for integral multiple of maxpackets. + * This shouldn't bother controllers that don't care about it. + */ + rem = rx_remain % maxpacket; + if (rem > 0) rx_remain = rx_remain + (maxpacket - rem); - } + return rx_remain; } -#define BYTES_PER_DOT 0x20000 static void rx_handler_dl_image(struct usb_ep *ep, struct usb_request *req) { - char response[RESPONSE_LEN]; - unsigned int transfer_size = download_size - download_bytes; + char response[FASTBOOT_RESPONSE_LEN] = {0}; + unsigned int transfer_size = fastboot_data_remaining(); const unsigned char *buffer = req->buf; unsigned int buffer_size = req->actual; - unsigned int pre_dot_num, now_dot_num; - unsigned int max; if (req->status != 0) { printf("Bad status: %d\n", req->status); @@ -430,235 +385,76 @@ static void rx_handler_dl_image(struct usb_ep *ep, struct usb_request *req) if (buffer_size < transfer_size) transfer_size = buffer_size; - memcpy((void *)CONFIG_FASTBOOT_BUF_ADDR + download_bytes, - buffer, transfer_size); - - pre_dot_num = download_bytes / BYTES_PER_DOT; - download_bytes += transfer_size; - now_dot_num = download_bytes / BYTES_PER_DOT; - - if (pre_dot_num != now_dot_num) { - putc('.'); - if (!(now_dot_num % 74)) - putc('\n'); - } + fastboot_data_download(buffer, transfer_size, response); + if (response[0]) { + fastboot_tx_write_str(response); + } else if (!fastboot_data_remaining()) { + fastboot_data_complete(response); - /* Check if transfer is done */ - if (download_bytes >= download_size) { /* - * Reset global transfer variable, keep download_bytes because - * it will be used in the next possible flashing command + * Reset global transfer variable */ - download_size = 0; req->complete = rx_handler_command; req->length = EP_BUFFER_SIZE; - sprintf(response, "OKAY"); fastboot_tx_write_str(response); - - printf("\ndownloading of %d bytes finished\n", download_bytes); } else { - max = is_high_speed ? hs_ep_out.wMaxPacketSize : - fs_ep_out.wMaxPacketSize; - req->length = rx_bytes_expected(max); - if (req->length < ep->maxpacket) - req->length = ep->maxpacket; + req->length = rx_bytes_expected(ep); } req->actual = 0; usb_ep_queue(ep, req, 0); } -static void cb_download(struct usb_ep *ep, struct usb_request *req) -{ - char *cmd = req->buf; - char response[RESPONSE_LEN]; - unsigned int max; - - strsep(&cmd, ":"); - download_size = simple_strtoul(cmd, NULL, 16); - download_bytes = 0; - - printf("Starting download of %d bytes\n", download_size); - - if (0 == download_size) { - sprintf(response, "FAILdata invalid size"); - } else if (download_size > CONFIG_FASTBOOT_BUF_SIZE) { - download_size = 0; - sprintf(response, "FAILdata too large"); - } else { - sprintf(response, "DATA%08x", download_size); - req->complete = rx_handler_dl_image; - max = is_high_speed ? hs_ep_out.wMaxPacketSize : - fs_ep_out.wMaxPacketSize; - req->length = rx_bytes_expected(max); - if (req->length < ep->maxpacket) - req->length = ep->maxpacket; - } - fastboot_tx_write_str(response); -} - -static void do_bootm_on_complete(struct usb_ep *ep, struct usb_request *req) -{ - char boot_addr_start[12]; - char *bootm_args[] = { "bootm", boot_addr_start, NULL }; - - puts("Booting kernel..\n"); - - sprintf(boot_addr_start, "0x%lx", load_addr); - do_bootm(NULL, 0, 2, bootm_args); - - /* This only happens if image is somehow faulty so we start over */ - do_reset(NULL, 0, 0, NULL); -} - -static void cb_boot(struct usb_ep *ep, struct usb_request *req) -{ - fastboot_func->in_req->complete = do_bootm_on_complete; - fastboot_tx_write_str("OKAY"); -} - static void do_exit_on_complete(struct usb_ep *ep, struct usb_request *req) { g_dnl_trigger_detach(); } -static void cb_continue(struct usb_ep *ep, struct usb_request *req) +static void do_bootm_on_complete(struct usb_ep *ep, struct usb_request *req) { - fastboot_func->in_req->complete = do_exit_on_complete; - fastboot_tx_write_str("OKAY"); + fastboot_boot(); + do_exit_on_complete(ep, req); } -#ifdef CONFIG_FASTBOOT_FLASH -static void cb_flash(struct usb_ep *ep, struct usb_request *req) +static void rx_handler_command(struct usb_ep *ep, struct usb_request *req) { - char *cmd = req->buf; - char response[RESPONSE_LEN]; + char *cmdbuf = req->buf; + char response[FASTBOOT_RESPONSE_LEN] = {0}; + int cmd = -1; - strsep(&cmd, ":"); - if (!cmd) { - error("missing partition name\n"); - fastboot_tx_write_str("FAILmissing partition name"); + if (req->status != 0 || req->length == 0) return; - } - - strcpy(response, "FAILno flash device defined"); -#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV - fb_mmc_flash_write(cmd, (void *)CONFIG_FASTBOOT_BUF_ADDR, - download_bytes, response); -#endif - fastboot_tx_write_str(response); -} -#endif -static void cb_oem(struct usb_ep *ep, struct usb_request *req) -{ - char *cmd = req->buf; -#ifdef CONFIG_FASTBOOT_FLASH - if (strncmp("format", cmd + 4, 6) == 0) { - char cmdbuf[32]; - sprintf(cmdbuf, "gpt write mmc %x $partitions", - CONFIG_FASTBOOT_FLASH_MMC_DEV); - if (run_command(cmdbuf, 0)) - fastboot_tx_write_str("FAIL"); - else - fastboot_tx_write_str("OKAY"); - } else -#endif - if (strncmp("unlock", cmd + 4, 8) == 0) { - fastboot_tx_write_str("FAILnot implemented"); - } - else { - fastboot_tx_write_str("FAILunknown oem command"); + if (req->actual < req->length) { + cmdbuf[req->actual] = '\0'; + cmd = fastboot_handle_command(cmdbuf, response); + } else { + pr_err("buffer overflow"); + fastboot_fail("buffer overflow", response); } -} - -#ifdef CONFIG_FASTBOOT_FLASH -static void cb_erase(struct usb_ep *ep, struct usb_request *req) -{ - char *cmd = req->buf; - char response[RESPONSE_LEN]; - strsep(&cmd, ":"); - if (!cmd) { - error("missing partition name"); - fastboot_tx_write_str("FAILmissing partition name"); - return; + if (!strncmp("DATA", response, 4)) { + req->complete = rx_handler_dl_image; + req->length = rx_bytes_expected(ep); } - strcpy(response, "FAILno flash device defined"); - -#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV - fb_mmc_erase(cmd, response); -#endif fastboot_tx_write_str(response); -} -#endif - -struct cmd_dispatch_info { - char *cmd; - void (*cb)(struct usb_ep *ep, struct usb_request *req); -}; -static const struct cmd_dispatch_info cmd_dispatch_info[] = { - { - .cmd = "reboot", - .cb = cb_reboot, - }, { - .cmd = "getvar:", - .cb = cb_getvar, - }, { - .cmd = "download:", - .cb = cb_download, - }, { - .cmd = "boot", - .cb = cb_boot, - }, { - .cmd = "continue", - .cb = cb_continue, - }, -#ifdef CONFIG_FASTBOOT_FLASH - { - .cmd = "flash", - .cb = cb_flash, - }, { - .cmd = "erase", - .cb = cb_erase, - }, -#endif - { - .cmd = "oem", - .cb = cb_oem, - }, -}; - -static void rx_handler_command(struct usb_ep *ep, struct usb_request *req) -{ - char *cmdbuf = req->buf; - void (*func_cb)(struct usb_ep *ep, struct usb_request *req) = NULL; - int i; - - if (req->status != 0 || req->length == 0) - return; + if (!strncmp("OKAY", response, 4)) { + switch (cmd) { + case FASTBOOT_COMMAND_BOOT: + fastboot_func->in_req->complete = do_bootm_on_complete; + break; - for (i = 0; i < ARRAY_SIZE(cmd_dispatch_info); i++) { - if (!strcmp_l1(cmd_dispatch_info[i].cmd, cmdbuf)) { - func_cb = cmd_dispatch_info[i].cb; + case FASTBOOT_COMMAND_CONTINUE: + fastboot_func->in_req->complete = do_exit_on_complete; break; - } - } - if (!func_cb) { - error("unknown command: %s\n", cmdbuf); - fastboot_tx_write_str("FAILunknown command"); - } else { - if (req->actual < req->length) { - u8 *buf = (u8 *)req->buf; - buf[req->actual] = 0; - func_cb(ep, req); - } else { - error("buffer overflow\n"); - fastboot_tx_write_str("FAILbuffer overflow"); + case FASTBOOT_COMMAND_REBOOT: + case FASTBOOT_COMMAND_REBOOT_BOOTLOADER: + fastboot_func->in_req->complete = compl_do_reset; + break; } }