[people/ms/u-boot.git] / drivers / usb / gadget / f_fastboot.c

/*
 * (C) Copyright 2008 - 2009
 * Windriver, <www.windriver.com>
 * Tom Rix <Tom.Rix@windriver.com>
 *
 * Copyright 2011 Sebastian Andrzej Siewior <bigeasy@linutronix.de>
 *
 * Copyright 2014 Linaro, Ltd.
 * Rob Herring <robh@kernel.org>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */
#include <config.h>
#include <common.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
#ifdef CONFIG_FASTBOOT_FLASH_NAND_DEV
#include <fb_nand.h>
#endif

#define FASTBOOT_VERSION		"0.4"

#define FASTBOOT_INTERFACE_CLASS	0xff
#define FASTBOOT_INTERFACE_SUB_CLASS	0x42
#define FASTBOOT_INTERFACE_PROTOCOL	0x03

#define RX_ENDPOINT_MAXIMUM_PACKET_SIZE_2_0  (0x0200)
#define RX_ENDPOINT_MAXIMUM_PACKET_SIZE_1_1  (0x0040)
#define TX_ENDPOINT_MAXIMUM_PACKET_SIZE      (0x0040)

#define EP_BUFFER_SIZE			4096

struct f_fastboot {
	struct usb_function usb_function;

	/* IN/OUT EP's and corresponding requests */
	struct usb_ep *in_ep, *out_ep;
	struct usb_request *in_req, *out_req;
};

static inline struct f_fastboot *func_to_fastboot(struct usb_function *f)
{
	return container_of(f, struct f_fastboot, usb_function);
}

static struct f_fastboot *fastboot_func;
static unsigned int fastboot_flash_session_id;
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,
};

static struct usb_endpoint_descriptor fs_ep_out = {
	.bLength		= USB_DT_ENDPOINT_SIZE,
	.bDescriptorType	= USB_DT_ENDPOINT,
	.bEndpointAddress	= USB_DIR_OUT,
	.bmAttributes		= USB_ENDPOINT_XFER_BULK,
	.wMaxPacketSize		= RX_ENDPOINT_MAXIMUM_PACKET_SIZE_1_1,
	.bInterval		= 0x00,
};

static struct usb_endpoint_descriptor hs_ep_out = {
	.bLength		= USB_DT_ENDPOINT_SIZE,
	.bDescriptorType	= USB_DT_ENDPOINT,
	.bEndpointAddress	= USB_DIR_OUT,
	.bmAttributes		= USB_ENDPOINT_XFER_BULK,
	.wMaxPacketSize		= RX_ENDPOINT_MAXIMUM_PACKET_SIZE_2_0,
	.bInterval		= 0x00,
};

static struct usb_interface_descriptor interface_desc = {
	.bLength		= USB_DT_INTERFACE_SIZE,
	.bDescriptorType	= USB_DT_INTERFACE,
	.bInterfaceNumber	= 0x00,
	.bAlternateSetting	= 0x00,
	.bNumEndpoints		= 0x02,
	.bInterfaceClass	= FASTBOOT_INTERFACE_CLASS,
	.bInterfaceSubClass	= FASTBOOT_INTERFACE_SUB_CLASS,
	.bInterfaceProtocol	= FASTBOOT_INTERFACE_PROTOCOL,
};

static struct usb_descriptor_header *fb_runtime_descs[] = {
	(struct usb_descriptor_header *)&interface_desc,
	(struct usb_descriptor_header *)&fs_ep_in,
	(struct usb_descriptor_header *)&hs_ep_out,
	NULL,
};

/*
 * static strings, in UTF-8
 */
static const char fastboot_name[] = "Android Fastboot";

static struct usb_string fastboot_string_defs[] = {
	[0].s = fastboot_name,
	{  }			/* end of list */
};

static struct usb_gadget_strings stringtab_fastboot = {
	.language	= 0x0409,	/* en-us */
	.strings	= fastboot_string_defs,
};

static struct usb_gadget_strings *fastboot_strings[] = {
	&stringtab_fastboot,
	NULL,
};

static void rx_handler_command(struct usb_ep *ep, struct usb_request *req);
static int strcmp_l1(const char *s1, const char *s2);


void fastboot_fail(char *response, const char *reason)
{
	strncpy(response, "FAIL\0", 5);
	strncat(response, reason, FASTBOOT_RESPONSE_LEN - 4 - 1);
}

void fastboot_okay(char *response, const char *reason)
{
	strncpy(response, "OKAY\0", 5);
	strncat(response, reason, FASTBOOT_RESPONSE_LEN - 4 - 1);
}

static void fastboot_complete(struct usb_ep *ep, struct usb_request *req)
{
	int status = req->status;
	if (!status)
		return;
	printf("status: %d ep '%s' trans: %d\n", status, ep->name, req->actual);
}

static int fastboot_bind(struct usb_configuration *c, struct usb_function *f)
{
	int id;
	struct usb_gadget *gadget = c->cdev->gadget;
	struct f_fastboot *f_fb = func_to_fastboot(f);
	const char *s;

	/* DYNAMIC interface numbers assignments */
	id = usb_interface_id(c, f);
	if (id < 0)
		return id;
	interface_desc.bInterfaceNumber = id;

	id = usb_string_id(c->cdev);
	if (id < 0)
		return id;
	fastboot_string_defs[0].id = id;
	interface_desc.iInterface = id;

	f_fb->in_ep = usb_ep_autoconfig(gadget, &fs_ep_in);
	if (!f_fb->in_ep)
		return -ENODEV;
	f_fb->in_ep->driver_data = c->cdev;

	f_fb->out_ep = usb_ep_autoconfig(gadget, &fs_ep_out);
	if (!f_fb->out_ep)
		return -ENODEV;
	f_fb->out_ep->driver_data = c->cdev;

	hs_ep_out.bEndpointAddress = fs_ep_out.bEndpointAddress;

	s = getenv("serial#");
	if (s)
		g_dnl_set_serialnumber((char *)s);

	return 0;
}

static void fastboot_unbind(struct usb_configuration *c, struct usb_function *f)
{
	memset(fastboot_func, 0, sizeof(*fastboot_func));
}

static void fastboot_disable(struct usb_function *f)
{
	struct f_fastboot *f_fb = func_to_fastboot(f);

	usb_ep_disable(f_fb->out_ep);
	usb_ep_disable(f_fb->in_ep);

	if (f_fb->out_req) {
		free(f_fb->out_req->buf);
		usb_ep_free_request(f_fb->out_ep, f_fb->out_req);
		f_fb->out_req = NULL;
	}
	if (f_fb->in_req) {
		free(f_fb->in_req->buf);
		usb_ep_free_request(f_fb->in_ep, f_fb->in_req);
		f_fb->in_req = NULL;
	}
}

static struct usb_request *fastboot_start_ep(struct usb_ep *ep)
{
	struct usb_request *req;

	req = usb_ep_alloc_request(ep, 0);
	if (!req)
		return NULL;

	req->length = EP_BUFFER_SIZE;
	req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, EP_BUFFER_SIZE);
	if (!req->buf) {
		usb_ep_free_request(ep, req);
		return NULL;
	}

	memset(req->buf, 0, req->length);
	return req;
}

static int fastboot_set_alt(struct usb_function *f,
			    unsigned interface, unsigned alt)
{
	int ret;
	struct usb_composite_dev *cdev = f->config->cdev;
	struct usb_gadget *gadget = cdev->gadget;
	struct f_fastboot *f_fb = func_to_fastboot(f);

	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;
	}
	if (ret) {
		puts("failed to enable out ep\n");
		return ret;
	}

	f_fb->out_req = fastboot_start_ep(f_fb->out_ep);
	if (!f_fb->out_req) {
		puts("failed to alloc out req\n");
		ret = -EINVAL;
		goto err;
	}
	f_fb->out_req->complete = rx_handler_command;

	ret = usb_ep_enable(f_fb->in_ep, &fs_ep_in);
	if (ret) {
		puts("failed to enable in ep\n");
		goto err;
	}

	f_fb->in_req = fastboot_start_ep(f_fb->in_ep);
	if (!f_fb->in_req) {
		puts("failed alloc req in\n");
		ret = -EINVAL;
		goto err;
	}
	f_fb->in_req->complete = fastboot_complete;

	ret = usb_ep_queue(f_fb->out_ep, f_fb->out_req, 0);
	if (ret)
		goto err;

	return 0;
err:
	fastboot_disable(f);
	return ret;
}

static int fastboot_add(struct usb_configuration *c)
{
	struct f_fastboot *f_fb = fastboot_func;
	int status;

	debug("%s: cdev: 0x%p\n", __func__, c->cdev);

	if (!f_fb) {
		f_fb = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_fb));
		if (!f_fb)
			return -ENOMEM;

		fastboot_func = f_fb;
		memset(f_fb, 0, sizeof(*f_fb));
	}

	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;
	f_fb->usb_function.disable = fastboot_disable;
	f_fb->usb_function.strings = fastboot_strings;

	status = usb_add_function(c, &f_fb->usb_function);
	if (status) {
		free(f_fb);
		fastboot_func = f_fb;
	}

	return status;
}
DECLARE_GADGET_BIND_CALLBACK(usb_dnl_fastboot, fastboot_add);

static int fastboot_tx_write(const char *buffer, unsigned int buffer_size)
{
	struct usb_request *in_req = fastboot_func->in_req;
	int ret;

	memcpy(in_req->buf, buffer, buffer_size);
	in_req->length = buffer_size;

	usb_ep_dequeue(fastboot_func->in_ep, in_req);

	ret = usb_ep_queue(fastboot_func->in_ep, in_req, 0);
	if (ret)
		printf("Error %d on queue\n", ret);
	return 0;
}

static int fastboot_tx_write_str(const char *buffer)
{
	return fastboot_tx_write(buffer, strlen(buffer));
}

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)
{
	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[FASTBOOT_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);

		/*
		 * This also indicates the start of a new flashing
		 * "session", in which we could have 1-N buffers to
		 * write to a partition.
		 *
		 * Reset our session counter.
		 */
		fastboot_flash_session_id = 0;
	} 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);
}

static unsigned int rx_bytes_expected(unsigned int maxpacket)
{
	int rx_remain = download_size - download_bytes;
	int rem = 0;
	if (rx_remain < 0)
		return 0;
	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;
		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[FASTBOOT_RESPONSE_LEN];
	unsigned int transfer_size = download_size - download_bytes;
	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);
		return;
	}

	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');
	}

	/* 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
		 */
		download_size = 0;
		req->complete = rx_handler_command;
		req->length = EP_BUFFER_SIZE;

		strcpy(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->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[FASTBOOT_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) {
		strcpy(response, "FAILdata invalid size");
	} else if (download_size > CONFIG_FASTBOOT_BUF_SIZE) {
		download_size = 0;
		strcpy(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)
{
	fastboot_func->in_req->complete = do_exit_on_complete;
	fastboot_tx_write_str("OKAY");
}

#ifdef CONFIG_FASTBOOT_FLASH
static void cb_flash(struct usb_ep *ep, struct usb_request *req)
{
	char *cmd = req->buf;
	char response[FASTBOOT_RESPONSE_LEN];

	strsep(&cmd, ":");
	if (!cmd) {
		error("missing partition name\n");
		fastboot_tx_write_str("FAILmissing partition name");
		return;
	}

	strcpy(response, "FAILno flash device defined");
#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
	fb_mmc_flash_write(cmd, fastboot_flash_session_id,
			   (void *)CONFIG_FASTBOOT_BUF_ADDR,
			   download_bytes, response);
#endif
#ifdef CONFIG_FASTBOOT_FLASH_NAND_DEV
	fb_nand_flash_write(cmd, fastboot_flash_session_id,
			    (void *)CONFIG_FASTBOOT_BUF_ADDR,
			    download_bytes, response);
#endif
	fastboot_flash_session_id++;
	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_MMC_DEV
	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");
	}
}

#ifdef CONFIG_FASTBOOT_FLASH
static void cb_erase(struct usb_ep *ep, struct usb_request *req)
{
	char *cmd = req->buf;
	char response[FASTBOOT_RESPONSE_LEN];

	strsep(&cmd, ":");
	if (!cmd) {
		error("missing partition name");
		fastboot_tx_write_str("FAILmissing partition name");
		return;
	}

	strcpy(response, "FAILno flash device defined");

#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
	fb_mmc_erase(cmd, response);
#endif
#ifdef CONFIG_FASTBOOT_FLASH_NAND_DEV
	fb_nand_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;

	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;
			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");
		}
	}

	*cmdbuf = '\0';
	req->actual = 0;
	usb_ep_queue(ep, req, 0);
}
Commit	Line	Data
3aab70af SS	1	/*
	2	* (C) Copyright 2008 - 2009
	3	* Windriver, <www.windriver.com>
	4	* Tom Rix <Tom.Rix@windriver.com>
	5	*
	6	* Copyright 2011 Sebastian Andrzej Siewior <bigeasy@linutronix.de>
	7	*
	8	* Copyright 2014 Linaro, Ltd.
	9	* Rob Herring <robh@kernel.org>
	10	*
	11	* SPDX-License-Identifier: GPL-2.0+
	12	*/
593cbd93	13	#include <config.h>
3aab70af SS	14	#include <common.h>
3aab70af SS	15	#include <errno.h>
3c8f98f5	16	#include <fastboot.h>
3aab70af SS	17	#include <malloc.h>
	18	#include <linux/usb/ch9.h>
	19	#include <linux/usb/gadget.h>
	20	#include <linux/usb/composite.h>
	21	#include <linux/compiler.h>
	22	#include <version.h>
	23	#include <g_dnl.h>
d1b5ed07 SR	24	#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
	25	#include <fb_mmc.h>
	26	#endif
bf8940d3 MR	27	#ifdef CONFIG_FASTBOOT_FLASH_NAND_DEV
	28	#include <fb_nand.h>
	29	#endif
3aab70af SS	30
	31	#define FASTBOOT_VERSION "0.4"
	32
	33	#define FASTBOOT_INTERFACE_CLASS 0xff
	34	#define FASTBOOT_INTERFACE_SUB_CLASS 0x42
	35	#define FASTBOOT_INTERFACE_PROTOCOL 0x03
	36
	37	#define RX_ENDPOINT_MAXIMUM_PACKET_SIZE_2_0 (0x0200)
	38	#define RX_ENDPOINT_MAXIMUM_PACKET_SIZE_1_1 (0x0040)
	39	#define TX_ENDPOINT_MAXIMUM_PACKET_SIZE (0x0040)
	40
3aab70af SS	41	#define EP_BUFFER_SIZE 4096
	42
	43	struct f_fastboot {
	44	struct usb_function usb_function;
	45
593cbd93	46	/* IN/OUT EP's and corresponding requests */
3aab70af SS	47	struct usb_ep in_ep, out_ep;
	48	struct usb_request in_req, out_req;
	49	};
	50
	51	static inline struct f_fastboot func_to_fastboot(struct usb_function f)
	52	{
	53	return container_of(f, struct f_fastboot, usb_function);
	54	}
	55
	56	static struct f_fastboot *fastboot_func;
6c9e00ee	57	static unsigned int fastboot_flash_session_id;
3aab70af SS	58	static unsigned int download_size;
3aab70af SS	59	static unsigned int download_bytes;
9e4b510d	60	static bool is_high_speed;
3aab70af SS	61
	62	static struct usb_endpoint_descriptor fs_ep_in = {
	63	.bLength = USB_DT_ENDPOINT_SIZE,
	64	.bDescriptorType = USB_DT_ENDPOINT,
	65	.bEndpointAddress = USB_DIR_IN,
	66	.bmAttributes = USB_ENDPOINT_XFER_BULK,
	67	.wMaxPacketSize = TX_ENDPOINT_MAXIMUM_PACKET_SIZE,
	68	.bInterval = 0x00,
	69	};
	70
	71	static struct usb_endpoint_descriptor fs_ep_out = {
	72	.bLength = USB_DT_ENDPOINT_SIZE,
	73	.bDescriptorType = USB_DT_ENDPOINT,
	74	.bEndpointAddress = USB_DIR_OUT,
	75	.bmAttributes = USB_ENDPOINT_XFER_BULK,
	76	.wMaxPacketSize = RX_ENDPOINT_MAXIMUM_PACKET_SIZE_1_1,
	77	.bInterval = 0x00,
	78	};
	79
	80	static struct usb_endpoint_descriptor hs_ep_out = {
	81	.bLength = USB_DT_ENDPOINT_SIZE,
	82	.bDescriptorType = USB_DT_ENDPOINT,
	83	.bEndpointAddress = USB_DIR_OUT,
	84	.bmAttributes = USB_ENDPOINT_XFER_BULK,
	85	.wMaxPacketSize = RX_ENDPOINT_MAXIMUM_PACKET_SIZE_2_0,
	86	.bInterval = 0x00,
	87	};
	88
	89	static struct usb_interface_descriptor interface_desc = {
	90	.bLength = USB_DT_INTERFACE_SIZE,
	91	.bDescriptorType = USB_DT_INTERFACE,
	92	.bInterfaceNumber = 0x00,
	93	.bAlternateSetting = 0x00,
	94	.bNumEndpoints = 0x02,
	95	.bInterfaceClass = FASTBOOT_INTERFACE_CLASS,
	96	.bInterfaceSubClass = FASTBOOT_INTERFACE_SUB_CLASS,
	97	.bInterfaceProtocol = FASTBOOT_INTERFACE_PROTOCOL,
	98	};
	99
	100	static struct usb_descriptor_header *fb_runtime_descs[] = {
	101	(struct usb_descriptor_header *)&interface_desc,
	102	(struct usb_descriptor_header *)&fs_ep_in,
	103	(struct usb_descriptor_header *)&hs_ep_out,
	104	NULL,
	105	};
	106
	107	/*
	108	* static strings, in UTF-8
	109	*/
	110	static const char fastboot_name[] = "Android Fastboot";
	111
	112	static struct usb_string fastboot_string_defs[] = {
	113	[0].s = fastboot_name,
	114	{ } /* end of list */
	115	};
	116
	117	static struct usb_gadget_strings stringtab_fastboot = {
	118	.language = 0x0409, /* en-us */
	119	.strings = fastboot_string_defs,
	120	};
	121
	122	static struct usb_gadget_strings *fastboot_strings[] = {
	123	&stringtab_fastboot,
	124	NULL,
125	};
126
127	static void rx_handler_command(struct usb_ep ep, struct usb_request req);
e2ec3e46	128	static int strcmp_l1(const char s1, const char s2);
3aab70af	129
3c8f98f5 MR	130
	131	void fastboot_fail(char response, const char reason)
	132	{
	133	strncpy(response, "FAIL\0", 5);
	134	strncat(response, reason, FASTBOOT_RESPONSE_LEN - 4 - 1);
	135	}
	136
	137	void fastboot_okay(char response, const char reason)
	138	{
	139	strncpy(response, "OKAY\0", 5);
	140	strncat(response, reason, FASTBOOT_RESPONSE_LEN - 4 - 1);
	141	}
	142
3aab70af SS	143	static void fastboot_complete(struct usb_ep ep, struct usb_request req)
	144	{
	145	int status = req->status;
	146	if (!status)
	147	return;
	148	printf("status: %d ep '%s' trans: %d\n", status, ep->name, req->actual);
	149	}
	150
	151	static int fastboot_bind(struct usb_configuration c, struct usb_function f)
	152	{
	153	int id;
	154	struct usb_gadget *gadget = c->cdev->gadget;
	155	struct f_fastboot *f_fb = func_to_fastboot(f);
537cd072	156	const char *s;
3aab70af SS	157
	158	/* DYNAMIC interface numbers assignments */
	159	id = usb_interface_id(c, f);
	160	if (id < 0)
	161	return id;
	162	interface_desc.bInterfaceNumber = id;
	163
	164	id = usb_string_id(c->cdev);
	165	if (id < 0)
	166	return id;
	167	fastboot_string_defs[0].id = id;
	168	interface_desc.iInterface = id;
	169
	170	f_fb->in_ep = usb_ep_autoconfig(gadget, &fs_ep_in);
	171	if (!f_fb->in_ep)
	172	return -ENODEV;
	173	f_fb->in_ep->driver_data = c->cdev;
	174
	175	f_fb->out_ep = usb_ep_autoconfig(gadget, &fs_ep_out);
	176	if (!f_fb->out_ep)
	177	return -ENODEV;
	178	f_fb->out_ep->driver_data = c->cdev;
	179
	180	hs_ep_out.bEndpointAddress = fs_ep_out.bEndpointAddress;
	181
537cd072 DK	182	s = getenv("serial#");
	183	if (s)
	184	g_dnl_set_serialnumber((char *)s);
	185
3aab70af SS	186	return 0;
	187	}
	188
	189	static void fastboot_unbind(struct usb_configuration c, struct usb_function f)
	190	{
	191	memset(fastboot_func, 0, sizeof(*fastboot_func));
	192	}
	193
	194	static void fastboot_disable(struct usb_function *f)
	195	{
	196	struct f_fastboot *f_fb = func_to_fastboot(f);
	197
	198	usb_ep_disable(f_fb->out_ep);
	199	usb_ep_disable(f_fb->in_ep);
	200
	201	if (f_fb->out_req) {
	202	free(f_fb->out_req->buf);
	203	usb_ep_free_request(f_fb->out_ep, f_fb->out_req);
	204	f_fb->out_req = NULL;
	205	}
	206	if (f_fb->in_req) {
	207	free(f_fb->in_req->buf);
	208	usb_ep_free_request(f_fb->in_ep, f_fb->in_req);
	209	f_fb->in_req = NULL;
	210	}
	211	}
	212
	213	static struct usb_request fastboot_start_ep(struct usb_ep ep)
	214	{
	215	struct usb_request *req;
	216
	217	req = usb_ep_alloc_request(ep, 0);
	218	if (!req)
	219	return NULL;
	220
	221	req->length = EP_BUFFER_SIZE;
	222	req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, EP_BUFFER_SIZE);
	223	if (!req->buf) {
	224	usb_ep_free_request(ep, req);
	225	return NULL;
	226	}
	227
	228	memset(req->buf, 0, req->length);
	229	return req;
	230	}
	231
	232	static int fastboot_set_alt(struct usb_function *f,
	233	unsigned interface, unsigned alt)
	234	{
	235	int ret;
	236	struct usb_composite_dev *cdev = f->config->cdev;
	237	struct usb_gadget *gadget = cdev->gadget;
	238	struct f_fastboot *f_fb = func_to_fastboot(f);
	239
	240	debug("%s: func: %s intf: %d alt: %d\n",
	241	__func__, f->name, interface, alt);
	242
	243	/* make sure we don't enable the ep twice */
9e4b510d	244	if (gadget->speed == USB_SPEED_HIGH) {
3aab70af	245	ret = usb_ep_enable(f_fb->out_ep, &hs_ep_out);
9e4b510d DK	246	is_high_speed = true;
9e4b510d DK	247	} else {
3aab70af	248	ret = usb_ep_enable(f_fb->out_ep, &fs_ep_out);
9e4b510d DK	249	is_high_speed = false;
9e4b510d DK	250	}
3aab70af SS	251	if (ret) {
	252	puts("failed to enable out ep\n");
	253	return ret;
	254	}
	255
	256	f_fb->out_req = fastboot_start_ep(f_fb->out_ep);
	257	if (!f_fb->out_req) {
	258	puts("failed to alloc out req\n");
	259	ret = -EINVAL;
	260	goto err;
	261	}
	262	f_fb->out_req->complete = rx_handler_command;
	263
	264	ret = usb_ep_enable(f_fb->in_ep, &fs_ep_in);
	265	if (ret) {
	266	puts("failed to enable in ep\n");
	267	goto err;
	268	}
	269
	270	f_fb->in_req = fastboot_start_ep(f_fb->in_ep);
	271	if (!f_fb->in_req) {
	272	puts("failed alloc req in\n");
	273	ret = -EINVAL;
	274	goto err;
	275	}
	276	f_fb->in_req->complete = fastboot_complete;
	277
	278	ret = usb_ep_queue(f_fb->out_ep, f_fb->out_req, 0);
	279	if (ret)
	280	goto err;
	281
	282	return 0;
	283	err:
	284	fastboot_disable(f);
	285	return ret;
	286	}
	287
	288	static int fastboot_add(struct usb_configuration *c)
	289	{
	290	struct f_fastboot *f_fb = fastboot_func;
	291	int status;
	292
	293	debug("%s: cdev: 0x%p\n", __func__, c->cdev);
	294
	295	if (!f_fb) {
	296	f_fb = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_fb));
	297	if (!f_fb)
	298	return -ENOMEM;
	299
	300	fastboot_func = f_fb;
	301	memset(f_fb, 0, sizeof(*f_fb));
	302	}
	303
	304	f_fb->usb_function.name = "f_fastboot";
	305	f_fb->usb_function.hs_descriptors = fb_runtime_descs;
	306	f_fb->usb_function.bind = fastboot_bind;
	307	f_fb->usb_function.unbind = fastboot_unbind;
	308	f_fb->usb_function.set_alt = fastboot_set_alt;
	309	f_fb->usb_function.disable = fastboot_disable;
	310	f_fb->usb_function.strings = fastboot_strings;
	311
	312	status = usb_add_function(c, &f_fb->usb_function);
	313	if (status) {
	314	free(f_fb);
315	fastboot_func = f_fb;
316	}
317
318	return status;
319	}
320	DECLARE_GADGET_BIND_CALLBACK(usb_dnl_fastboot, fastboot_add);
321
593cbd93	322	static int fastboot_tx_write(const char *buffer, unsigned int buffer_size)
3aab70af SS	323	{
	324	struct usb_request *in_req = fastboot_func->in_req;
	325	int ret;
	326
	327	memcpy(in_req->buf, buffer, buffer_size);
	328	in_req->length = buffer_size;
bc9071c9 PK	329
	330	usb_ep_dequeue(fastboot_func->in_ep, in_req);
	331
3aab70af SS	332	ret = usb_ep_queue(fastboot_func->in_ep, in_req, 0);
	333	if (ret)
	334	printf("Error %d on queue\n", ret);
	335	return 0;
	336	}
	337
	338	static int fastboot_tx_write_str(const char *buffer)
	339	{
	340	return fastboot_tx_write(buffer, strlen(buffer));
	341	}
	342
	343	static void compl_do_reset(struct usb_ep ep, struct usb_request req)
	344	{
	345	do_reset(NULL, 0, 0, NULL);
	346	}
	347
e2ec3e46 AF	348	int __weak fb_set_reboot_flag(void)
	349	{
	350	return -ENOSYS;
	351	}
	352
3aab70af SS	353	static void cb_reboot(struct usb_ep ep, struct usb_request req)
3aab70af SS	354	{
e2ec3e46 AF	355	char *cmd = req->buf;
	356	if (!strcmp_l1("reboot-bootloader", cmd)) {
	357	if (fb_set_reboot_flag()) {
	358	fastboot_tx_write_str("FAILCannot set reboot flag");
	359	return;
	360	}
	361	}
3aab70af SS	362	fastboot_func->in_req->complete = compl_do_reset;
	363	fastboot_tx_write_str("OKAY");
	364	}
	365
	366	static int strcmp_l1(const char s1, const char s2)
	367	{
	368	if (!s1 \|\| !s2)
	369	return -1;
	370	return strncmp(s1, s2, strlen(s1));
	371	}
	372
	373	static void cb_getvar(struct usb_ep ep, struct usb_request req)
	374	{
	375	char *cmd = req->buf;
3c8f98f5	376	char response[FASTBOOT_RESPONSE_LEN];
3aab70af	377	const char *s;
29425be4	378	size_t chars_left;
3aab70af SS	379
3aab70af SS	380	strcpy(response, "OKAY");
29425be4 JH	381	chars_left = sizeof(response) - strlen(response) - 1;
29425be4 JH	382
3aab70af SS	383	strsep(&cmd, ":");
3aab70af SS	384	if (!cmd) {
593cbd93	385	error("missing variable\n");
3aab70af SS	386	fastboot_tx_write_str("FAILmissing var");
	387	return;
	388	}
	389
	390	if (!strcmp_l1("version", cmd)) {
29425be4	391	strncat(response, FASTBOOT_VERSION, chars_left);
3aab70af	392	} else if (!strcmp_l1("bootloader-version", cmd)) {
29425be4	393	strncat(response, U_BOOT_VERSION, chars_left);
c674a666 EN	394	} else if (!strcmp_l1("downloadsize", cmd) \|\|
c674a666 EN	395	!strcmp_l1("max-download-size", cmd)) {
3aab70af SS	396	char str_num[12];
3aab70af SS	397
a588d99a	398	sprintf(str_num, "0x%08x", CONFIG_FASTBOOT_BUF_SIZE);
29425be4	399	strncat(response, str_num, chars_left);
6c9e00ee MR	400
	401	/*
	402	* This also indicates the start of a new flashing
	403	* "session", in which we could have 1-N buffers to
	404	* write to a partition.
	405	*
	406	* Reset our session counter.
	407	*/
	408	fastboot_flash_session_id = 0;
3aab70af SS	409	} else if (!strcmp_l1("serialno", cmd)) {
	410	s = getenv("serial#");
	411	if (s)
29425be4	412	strncat(response, s, chars_left);
3aab70af SS	413	else
	414	strcpy(response, "FAILValue not set");
	415	} else {
593cbd93	416	error("unknown variable: %s\n", cmd);
3aab70af SS	417	strcpy(response, "FAILVariable not implemented");
	418	}
	419	fastboot_tx_write_str(response);
	420	}
	421
9e4b510d	422	static unsigned int rx_bytes_expected(unsigned int maxpacket)
3aab70af SS	423	{
3aab70af SS	424	int rx_remain = download_size - download_bytes;
9e4b510d	425	int rem = 0;
3aab70af SS	426	if (rx_remain < 0)
	427	return 0;
	428	if (rx_remain > EP_BUFFER_SIZE)
	429	return EP_BUFFER_SIZE;
9e4b510d DK	430	if (rx_remain < maxpacket) {
	431	rx_remain = maxpacket;
	432	} else if (rx_remain % maxpacket != 0) {
	433	rem = rx_remain % maxpacket;
	434	rx_remain = rx_remain + (maxpacket - rem);
	435	}
3aab70af SS	436	return rx_remain;
	437	}
	438
	439	#define BYTES_PER_DOT 0x20000
	440	static void rx_handler_dl_image(struct usb_ep ep, struct usb_request req)
	441	{
3c8f98f5	442	char response[FASTBOOT_RESPONSE_LEN];
3aab70af SS	443	unsigned int transfer_size = download_size - download_bytes;
	444	const unsigned char *buffer = req->buf;
	445	unsigned int buffer_size = req->actual;
23d1d10c	446	unsigned int pre_dot_num, now_dot_num;
9e4b510d	447	unsigned int max;
3aab70af SS	448
	449	if (req->status != 0) {
	450	printf("Bad status: %d\n", req->status);
	451	return;
	452	}
	453
	454	if (buffer_size < transfer_size)
	455	transfer_size = buffer_size;
	456
a588d99a	457	memcpy((void *)CONFIG_FASTBOOT_BUF_ADDR + download_bytes,
3aab70af SS	458	buffer, transfer_size);
3aab70af SS	459
23d1d10c	460	pre_dot_num = download_bytes / BYTES_PER_DOT;
3aab70af	461	download_bytes += transfer_size;
23d1d10c BS	462	now_dot_num = download_bytes / BYTES_PER_DOT;
	463
	464	if (pre_dot_num != now_dot_num) {
	465	putc('.');
	466	if (!(now_dot_num % 74))
	467	putc('\n');
	468	}
3aab70af SS	469
	470	/* Check if transfer is done */
	471	if (download_bytes >= download_size) {
	472	/*
	473	* Reset global transfer variable, keep download_bytes because
	474	* it will be used in the next possible flashing command
	475	*/
	476	download_size = 0;
	477	req->complete = rx_handler_command;
	478	req->length = EP_BUFFER_SIZE;
	479
192bc694	480	strcpy(response, "OKAY");
3aab70af SS	481	fastboot_tx_write_str(response);
	482
	483	printf("\ndownloading of %d bytes finished\n", download_bytes);
	484	} else {
9e4b510d DK	485	max = is_high_speed ? hs_ep_out.wMaxPacketSize :
	486	fs_ep_out.wMaxPacketSize;
	487	req->length = rx_bytes_expected(max);
3aab70af SS	488	if (req->length < ep->maxpacket)
	489	req->length = ep->maxpacket;
	490	}
	491
3aab70af SS	492	req->actual = 0;
	493	usb_ep_queue(ep, req, 0);
	494	}
	495
	496	static void cb_download(struct usb_ep ep, struct usb_request req)
	497	{
	498	char *cmd = req->buf;
3c8f98f5	499	char response[FASTBOOT_RESPONSE_LEN];
9e4b510d	500	unsigned int max;
3aab70af SS	501
	502	strsep(&cmd, ":");
	503	download_size = simple_strtoul(cmd, NULL, 16);
	504	download_bytes = 0;
	505
	506	printf("Starting download of %d bytes\n", download_size);
	507
	508	if (0 == download_size) {
192bc694	509	strcpy(response, "FAILdata invalid size");
a588d99a	510	} else if (download_size > CONFIG_FASTBOOT_BUF_SIZE) {
3aab70af	511	download_size = 0;
192bc694	512	strcpy(response, "FAILdata too large");
3aab70af SS	513	} else {
	514	sprintf(response, "DATA%08x", download_size);
	515	req->complete = rx_handler_dl_image;
9e4b510d DK	516	max = is_high_speed ? hs_ep_out.wMaxPacketSize :
	517	fs_ep_out.wMaxPacketSize;
	518	req->length = rx_bytes_expected(max);
3aab70af SS	519	if (req->length < ep->maxpacket)
	520	req->length = ep->maxpacket;
	521	}
	522	fastboot_tx_write_str(response);
	523	}
	524
	525	static void do_bootm_on_complete(struct usb_ep ep, struct usb_request req)
	526	{
	527	char boot_addr_start[12];
	528	char *bootm_args[] = { "bootm", boot_addr_start, NULL };
	529
	530	puts("Booting kernel..\n");
	531
	532	sprintf(boot_addr_start, "0x%lx", load_addr);
	533	do_bootm(NULL, 0, 2, bootm_args);
	534
	535	/* This only happens if image is somehow faulty so we start over */
	536	do_reset(NULL, 0, 0, NULL);
	537	}
	538
	539	static void cb_boot(struct usb_ep ep, struct usb_request req)
	540	{
	541	fastboot_func->in_req->complete = do_bootm_on_complete;
	542	fastboot_tx_write_str("OKAY");
	543	}
	544
267abc62 RH	545	static void do_exit_on_complete(struct usb_ep ep, struct usb_request req)
	546	{
	547	g_dnl_trigger_detach();
	548	}
	549
	550	static void cb_continue(struct usb_ep ep, struct usb_request req)
	551	{
	552	fastboot_func->in_req->complete = do_exit_on_complete;
	553	fastboot_tx_write_str("OKAY");
	554	}
	555
d1b5ed07 SR	556	#ifdef CONFIG_FASTBOOT_FLASH
	557	static void cb_flash(struct usb_ep ep, struct usb_request req)
	558	{
	559	char *cmd = req->buf;
3c8f98f5	560	char response[FASTBOOT_RESPONSE_LEN];
d1b5ed07 SR	561
	562	strsep(&cmd, ":");
	563	if (!cmd) {
593cbd93	564	error("missing partition name\n");
d1b5ed07 SR	565	fastboot_tx_write_str("FAILmissing partition name");
	566	return;
	567	}
	568
	569	strcpy(response, "FAILno flash device defined");
	570	#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
6c9e00ee MR	571	fb_mmc_flash_write(cmd, fastboot_flash_session_id,
6c9e00ee MR	572	(void *)CONFIG_FASTBOOT_BUF_ADDR,
d1b5ed07	573	download_bytes, response);
bf8940d3 MR	574	#endif
	575	#ifdef CONFIG_FASTBOOT_FLASH_NAND_DEV
	576	fb_nand_flash_write(cmd, fastboot_flash_session_id,
	577	(void *)CONFIG_FASTBOOT_BUF_ADDR,
	578	download_bytes, response);
d1b5ed07	579	#endif
6c9e00ee	580	fastboot_flash_session_id++;
d1b5ed07 SR	581	fastboot_tx_write_str(response);
	582	}
	583	#endif
	584
de195620 MS	585	static void cb_oem(struct usb_ep ep, struct usb_request req)
	586	{
	587	char *cmd = req->buf;
4adef270	588	#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
372d7dec RH	589	if (strncmp("format", cmd + 4, 6) == 0) {
	590	char cmdbuf[32];
	591	sprintf(cmdbuf, "gpt write mmc %x $partitions",
	592	CONFIG_FASTBOOT_FLASH_MMC_DEV);
	593	if (run_command(cmdbuf, 0))
	594	fastboot_tx_write_str("FAIL");
	595	else
	596	fastboot_tx_write_str("OKAY");
	597	} else
	598	#endif
de195620 MS	599	if (strncmp("unlock", cmd + 4, 8) == 0) {
	600	fastboot_tx_write_str("FAILnot implemented");
	601	}
	602	else {
	603	fastboot_tx_write_str("FAILunknown oem command");
	604	}
	605	}
	606
89792381 DK	607	#ifdef CONFIG_FASTBOOT_FLASH
	608	static void cb_erase(struct usb_ep ep, struct usb_request req)
	609	{
	610	char *cmd = req->buf;
3c8f98f5	611	char response[FASTBOOT_RESPONSE_LEN];
89792381 DK	612
	613	strsep(&cmd, ":");
	614	if (!cmd) {
	615	error("missing partition name");
	616	fastboot_tx_write_str("FAILmissing partition name");
	617	return;
	618	}
	619
	620	strcpy(response, "FAILno flash device defined");
	621
	622	#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
	623	fb_mmc_erase(cmd, response);
bf8940d3 MR	624	#endif
	625	#ifdef CONFIG_FASTBOOT_FLASH_NAND_DEV
	626	fb_nand_erase(cmd, response);
89792381 DK	627	#endif
	628	fastboot_tx_write_str(response);
	629	}
	630	#endif
	631
3aab70af SS	632	struct cmd_dispatch_info {
	633	char *cmd;
	634	void (cb)(struct usb_ep ep, struct usb_request *req);
	635	};
	636
	637	static const struct cmd_dispatch_info cmd_dispatch_info[] = {
	638	{
	639	.cmd = "reboot",
	640	.cb = cb_reboot,
	641	}, {
	642	.cmd = "getvar:",
	643	.cb = cb_getvar,
	644	}, {
	645	.cmd = "download:",
	646	.cb = cb_download,
	647	}, {
	648	.cmd = "boot",
	649	.cb = cb_boot,
267abc62 RH	650	}, {
	651	.cmd = "continue",
	652	.cb = cb_continue,
3aab70af	653	},
d1b5ed07 SR	654	#ifdef CONFIG_FASTBOOT_FLASH
	655	{
	656	.cmd = "flash",
	657	.cb = cb_flash,
89792381 DK	658	}, {
	659	.cmd = "erase",
	660	.cb = cb_erase,
d1b5ed07 SR	661	},
d1b5ed07 SR	662	#endif
de195620 MS	663	{
	664	.cmd = "oem",
	665	.cb = cb_oem,
	666	},
3aab70af SS	667	};
	668
	669	static void rx_handler_command(struct usb_ep ep, struct usb_request req)
	670	{
	671	char *cmdbuf = req->buf;
	672	void (func_cb)(struct usb_ep ep, struct usb_request *req) = NULL;
	673	int i;
	674
94b385fa PK	675	if (req->status != 0 \|\| req->length == 0)
	676	return;
	677
3aab70af SS	678	for (i = 0; i < ARRAY_SIZE(cmd_dispatch_info); i++) {
	679	if (!strcmp_l1(cmd_dispatch_info[i].cmd, cmdbuf)) {
	680	func_cb = cmd_dispatch_info[i].cb;
	681	break;
	682	}
	683	}
	684
593cbd93 SR	685	if (!func_cb) {
593cbd93 SR	686	error("unknown command: %s\n", cmdbuf);
3aab70af	687	fastboot_tx_write_str("FAILunknown command");
593cbd93	688	} else {
e2140588 EN	689	if (req->actual < req->length) {
	690	u8 buf = (u8 )req->buf;
	691	buf[req->actual] = 0;
	692	func_cb(ep, req);
	693	} else {
	694	error("buffer overflow\n");
	695	fastboot_tx_write_str("FAILbuffer overflow");
	696	}
593cbd93	697	}
3aab70af	698
94b385fa PK	699	*cmdbuf = '\0';
	700	req->actual = 0;
	701	usb_ep_queue(ep, req, 0);
3aab70af	702	}