+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2008 - 2009
* Windriver, <www.windriver.com>
*
* Copyright 2014 Linaro, Ltd.
* Rob Herring <robh@kernel.org>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#include <common.h>
+#include <env.h>
#include <errno.h>
+#include <fastboot.h>
#include <malloc.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb/composite.h>
#include <linux/compiler.h>
-#include <version.h>
#include <g_dnl.h>
-#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
-#include <fb_mmc.h>
-#endif
-
-#define FASTBOOT_VERSION "0.4"
#define FASTBOOT_INTERFACE_CLASS 0xff
#define FASTBOOT_INTERFACE_SUB_CLASS 0x42
#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;
}
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 = {
.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 = {
.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 = {
.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
*/
};
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)
{
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);
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;
}
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;
}
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;
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);
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;
}
}
projects / oweals / u-boot.git / blobdiff