[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 <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 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)

/* The 64 defined bytes plus \0 */
#define RESPONSE_LEN	(64 + 1)

#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 download_size;
static unsigned int download_bytes;

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 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);

	/* 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;

	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);
	else
		ret = usb_ep_enable(f_fb->out_ep, &fs_ep_out);
	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;
	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);
}

static void cb_reboot(struct usb_ep *ep, struct usb_request *req)
{
	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[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_USB_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);
}

static unsigned int rx_bytes_expected(void)
{
	int rx_remain = download_size - download_bytes;
	if (rx_remain < 0)
		return 0;
	if (rx_remain > EP_BUFFER_SIZE)
		return EP_BUFFER_SIZE;
	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;
	const unsigned char *buffer = req->buf;
	unsigned int buffer_size = req->actual;
	unsigned int pre_dot_num, now_dot_num;

	if (req->status != 0) {
		printf("Bad status: %d\n", req->status);
		return;
	}

	if (buffer_size < transfer_size)
		transfer_size = buffer_size;

	memcpy((void *)CONFIG_USB_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;

		sprintf(response, "OKAY");
		fastboot_tx_write_str(response);

		printf("\ndownloading of %d bytes finished\n", download_bytes);
	} else {
		req->length = rx_bytes_expected();
		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[RESPONSE_LEN];

	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_USB_FASTBOOT_BUF_SIZE) {
		download_size = 0;
		sprintf(response, "FAILdata too large");
	} else {
		sprintf(response, "DATA%08x", download_size);
		req->complete = rx_handler_dl_image;
		req->length = rx_bytes_expected();
		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[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, (void *)CONFIG_USB_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");
	}
}

#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;
	}

	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;

	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");
		}
	}

	if (req->status == 0) {
		*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>
	15	#include <errno.h>
	16	#include <malloc.h>
	17	#include <linux/usb/ch9.h>
	18	#include <linux/usb/gadget.h>
	19	#include <linux/usb/composite.h>
	20	#include <linux/compiler.h>
	21	#include <version.h>
	22	#include <g_dnl.h>
d1b5ed07 SR	23	#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
	24	#include <fb_mmc.h>
	25	#endif
3aab70af SS	26
	27	#define FASTBOOT_VERSION "0.4"
	28
	29	#define FASTBOOT_INTERFACE_CLASS 0xff
	30	#define FASTBOOT_INTERFACE_SUB_CLASS 0x42
	31	#define FASTBOOT_INTERFACE_PROTOCOL 0x03
	32
	33	#define RX_ENDPOINT_MAXIMUM_PACKET_SIZE_2_0 (0x0200)
	34	#define RX_ENDPOINT_MAXIMUM_PACKET_SIZE_1_1 (0x0040)
	35	#define TX_ENDPOINT_MAXIMUM_PACKET_SIZE (0x0040)
	36
	37	/* The 64 defined bytes plus \0 */
	38	#define RESPONSE_LEN (64 + 1)
	39
	40	#define EP_BUFFER_SIZE 4096
	41
	42	struct f_fastboot {
	43	struct usb_function usb_function;
	44
593cbd93	45	/* IN/OUT EP's and corresponding requests */
3aab70af SS	46	struct usb_ep in_ep, out_ep;
	47	struct usb_request in_req, out_req;
	48	};
	49
	50	static inline struct f_fastboot func_to_fastboot(struct usb_function f)
	51	{
	52	return container_of(f, struct f_fastboot, usb_function);
	53	}
	54
	55	static struct f_fastboot *fastboot_func;
	56	static unsigned int download_size;
	57	static unsigned int download_bytes;
	58
	59	static struct usb_endpoint_descriptor fs_ep_in = {
	60	.bLength = USB_DT_ENDPOINT_SIZE,
	61	.bDescriptorType = USB_DT_ENDPOINT,
	62	.bEndpointAddress = USB_DIR_IN,
	63	.bmAttributes = USB_ENDPOINT_XFER_BULK,
	64	.wMaxPacketSize = TX_ENDPOINT_MAXIMUM_PACKET_SIZE,
	65	.bInterval = 0x00,
	66	};
	67
	68	static struct usb_endpoint_descriptor fs_ep_out = {
	69	.bLength = USB_DT_ENDPOINT_SIZE,
	70	.bDescriptorType = USB_DT_ENDPOINT,
	71	.bEndpointAddress = USB_DIR_OUT,
	72	.bmAttributes = USB_ENDPOINT_XFER_BULK,
	73	.wMaxPacketSize = RX_ENDPOINT_MAXIMUM_PACKET_SIZE_1_1,
	74	.bInterval = 0x00,
	75	};
	76
	77	static struct usb_endpoint_descriptor hs_ep_out = {
	78	.bLength = USB_DT_ENDPOINT_SIZE,
	79	.bDescriptorType = USB_DT_ENDPOINT,
	80	.bEndpointAddress = USB_DIR_OUT,
	81	.bmAttributes = USB_ENDPOINT_XFER_BULK,
	82	.wMaxPacketSize = RX_ENDPOINT_MAXIMUM_PACKET_SIZE_2_0,
	83	.bInterval = 0x00,
	84	};
	85
	86	static struct usb_interface_descriptor interface_desc = {
	87	.bLength = USB_DT_INTERFACE_SIZE,
	88	.bDescriptorType = USB_DT_INTERFACE,
	89	.bInterfaceNumber = 0x00,
	90	.bAlternateSetting = 0x00,
	91	.bNumEndpoints = 0x02,
	92	.bInterfaceClass = FASTBOOT_INTERFACE_CLASS,
	93	.bInterfaceSubClass = FASTBOOT_INTERFACE_SUB_CLASS,
	94	.bInterfaceProtocol = FASTBOOT_INTERFACE_PROTOCOL,
	95	};
	96
	97	static struct usb_descriptor_header *fb_runtime_descs[] = {
	98	(struct usb_descriptor_header *)&interface_desc,
	99	(struct usb_descriptor_header *)&fs_ep_in,
	100	(struct usb_descriptor_header *)&hs_ep_out,
	101	NULL,
	102	};
	103
	104	/*
	105	* static strings, in UTF-8
	106	*/
	107	static const char fastboot_name[] = "Android Fastboot";
	108
	109	static struct usb_string fastboot_string_defs[] = {
110	[0].s = fastboot_name,
111	{ } /* end of list */
112	};
113
114	static struct usb_gadget_strings stringtab_fastboot = {
115	.language = 0x0409, /* en-us */
116	.strings = fastboot_string_defs,
117	};
118
119	static struct usb_gadget_strings *fastboot_strings[] = {
120	&stringtab_fastboot,
121	NULL,
122	};
123
124	static void rx_handler_command(struct usb_ep ep, struct usb_request req);
125
126	static void fastboot_complete(struct usb_ep ep, struct usb_request req)
127	{
128	int status = req->status;
129	if (!status)
130	return;
131	printf("status: %d ep '%s' trans: %d\n", status, ep->name, req->actual);
132	}
133
134	static int fastboot_bind(struct usb_configuration c, struct usb_function f)
135	{
136	int id;
137	struct usb_gadget *gadget = c->cdev->gadget;
138	struct f_fastboot *f_fb = func_to_fastboot(f);
139
140	/* DYNAMIC interface numbers assignments */
141	id = usb_interface_id(c, f);
142	if (id < 0)
143	return id;
144	interface_desc.bInterfaceNumber = id;
145
146	id = usb_string_id(c->cdev);
147	if (id < 0)
148	return id;
149	fastboot_string_defs[0].id = id;
150	interface_desc.iInterface = id;
151
152	f_fb->in_ep = usb_ep_autoconfig(gadget, &fs_ep_in);
153	if (!f_fb->in_ep)
154	return -ENODEV;
155	f_fb->in_ep->driver_data = c->cdev;
156
157	f_fb->out_ep = usb_ep_autoconfig(gadget, &fs_ep_out);
158	if (!f_fb->out_ep)
159	return -ENODEV;
160	f_fb->out_ep->driver_data = c->cdev;
161
162	hs_ep_out.bEndpointAddress = fs_ep_out.bEndpointAddress;
163
164	return 0;
165	}
166
167	static void fastboot_unbind(struct usb_configuration c, struct usb_function f)
168	{
169	memset(fastboot_func, 0, sizeof(*fastboot_func));
170	}
171
172	static void fastboot_disable(struct usb_function *f)
173	{
174	struct f_fastboot *f_fb = func_to_fastboot(f);
175
176	usb_ep_disable(f_fb->out_ep);
177	usb_ep_disable(f_fb->in_ep);
178
179	if (f_fb->out_req) {
180	free(f_fb->out_req->buf);
181	usb_ep_free_request(f_fb->out_ep, f_fb->out_req);
182	f_fb->out_req = NULL;
183	}
184	if (f_fb->in_req) {
185	free(f_fb->in_req->buf);
186	usb_ep_free_request(f_fb->in_ep, f_fb->in_req);
187	f_fb->in_req = NULL;
188	}
189	}
190
191	static struct usb_request fastboot_start_ep(struct usb_ep ep)
192	{
193	struct usb_request *req;
194
195	req = usb_ep_alloc_request(ep, 0);
196	if (!req)
197	return NULL;
198
199	req->length = EP_BUFFER_SIZE;
200	req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, EP_BUFFER_SIZE);
201	if (!req->buf) {
202	usb_ep_free_request(ep, req);
203	return NULL;
204	}
205
206	memset(req->buf, 0, req->length);
207	return req;
208	}
209
210	static int fastboot_set_alt(struct usb_function *f,
211	unsigned interface, unsigned alt)
212	{
213	int ret;
214	struct usb_composite_dev *cdev = f->config->cdev;
215	struct usb_gadget *gadget = cdev->gadget;
216	struct f_fastboot *f_fb = func_to_fastboot(f);
217
218	debug("%s: func: %s intf: %d alt: %d\n",
219	__func__, f->name, interface, alt);
220
221	/* make sure we don't enable the ep twice */
222	if (gadget->speed == USB_SPEED_HIGH)
223	ret = usb_ep_enable(f_fb->out_ep, &hs_ep_out);
224	else
225	ret = usb_ep_enable(f_fb->out_ep, &fs_ep_out);
226	if (ret) {
227	puts("failed to enable out ep\n");
228	return ret;
229	}
230
231	f_fb->out_req = fastboot_start_ep(f_fb->out_ep);
232	if (!f_fb->out_req) {
233	puts("failed to alloc out req\n");
234	ret = -EINVAL;
235	goto err;
236	}
237	f_fb->out_req->complete = rx_handler_command;
238
239	ret = usb_ep_enable(f_fb->in_ep, &fs_ep_in);
240	if (ret) {
241	puts("failed to enable in ep\n");
242	goto err;
243	}
244
245	f_fb->in_req = fastboot_start_ep(f_fb->in_ep);
246	if (!f_fb->in_req) {
247	puts("failed alloc req in\n");
248	ret = -EINVAL;
249	goto err;
250	}
251	f_fb->in_req->complete = fastboot_complete;
252
253	ret = usb_ep_queue(f_fb->out_ep, f_fb->out_req, 0);
254	if (ret)
255	goto err;
256
257	return 0;
258	err:
259	fastboot_disable(f);
260	return ret;
261	}
262
263	static int fastboot_add(struct usb_configuration *c)
264	{
265	struct f_fastboot *f_fb = fastboot_func;
266	int status;
267
268	debug("%s: cdev: 0x%p\n", __func__, c->cdev);
269
270	if (!f_fb) {
271	f_fb = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_fb));
272	if (!f_fb)
273	return -ENOMEM;
274
275	fastboot_func = f_fb;
276	memset(f_fb, 0, sizeof(*f_fb));
277	}
278
279	f_fb->usb_function.name = "f_fastboot";
280	f_fb->usb_function.hs_descriptors = fb_runtime_descs;
281	f_fb->usb_function.bind = fastboot_bind;
282	f_fb->usb_function.unbind = fastboot_unbind;
283	f_fb->usb_function.set_alt = fastboot_set_alt;
284	f_fb->usb_function.disable = fastboot_disable;
285	f_fb->usb_function.strings = fastboot_strings;
286
287	status = usb_add_function(c, &f_fb->usb_function);
288	if (status) {
289	free(f_fb);
290	fastboot_func = f_fb;
291	}
292
293	return status;
294	}
295	DECLARE_GADGET_BIND_CALLBACK(usb_dnl_fastboot, fastboot_add);
296
593cbd93	297	static int fastboot_tx_write(const char *buffer, unsigned int buffer_size)
3aab70af SS	298	{
	299	struct usb_request *in_req = fastboot_func->in_req;
	300	int ret;
	301
	302	memcpy(in_req->buf, buffer, buffer_size);
	303	in_req->length = buffer_size;
	304	ret = usb_ep_queue(fastboot_func->in_ep, in_req, 0);
	305	if (ret)
	306	printf("Error %d on queue\n", ret);
	307	return 0;
	308	}
	309
	310	static int fastboot_tx_write_str(const char *buffer)
	311	{
	312	return fastboot_tx_write(buffer, strlen(buffer));
	313	}
	314
	315	static void compl_do_reset(struct usb_ep ep, struct usb_request req)
	316	{
	317	do_reset(NULL, 0, 0, NULL);
	318	}
	319
	320	static void cb_reboot(struct usb_ep ep, struct usb_request req)
	321	{
	322	fastboot_func->in_req->complete = compl_do_reset;
	323	fastboot_tx_write_str("OKAY");
	324	}
	325
	326	static int strcmp_l1(const char s1, const char s2)
	327	{
	328	if (!s1 \|\| !s2)
	329	return -1;
	330	return strncmp(s1, s2, strlen(s1));
	331	}
	332
	333	static void cb_getvar(struct usb_ep ep, struct usb_request req)
	334	{
	335	char *cmd = req->buf;
	336	char response[RESPONSE_LEN];
	337	const char *s;
29425be4	338	size_t chars_left;
3aab70af SS	339
3aab70af SS	340	strcpy(response, "OKAY");
29425be4 JH	341	chars_left = sizeof(response) - strlen(response) - 1;
29425be4 JH	342
3aab70af SS	343	strsep(&cmd, ":");
3aab70af SS	344	if (!cmd) {
593cbd93	345	error("missing variable\n");
3aab70af SS	346	fastboot_tx_write_str("FAILmissing var");
	347	return;
	348	}
	349
	350	if (!strcmp_l1("version", cmd)) {
29425be4	351	strncat(response, FASTBOOT_VERSION, chars_left);
3aab70af	352	} else if (!strcmp_l1("bootloader-version", cmd)) {
29425be4	353	strncat(response, U_BOOT_VERSION, chars_left);
c674a666 EN	354	} else if (!strcmp_l1("downloadsize", cmd) \|\|
c674a666 EN	355	!strcmp_l1("max-download-size", cmd)) {
3aab70af SS	356	char str_num[12];
3aab70af SS	357
84c24f66	358	sprintf(str_num, "0x%08x", CONFIG_USB_FASTBOOT_BUF_SIZE);
29425be4	359	strncat(response, str_num, chars_left);
3aab70af SS	360	} else if (!strcmp_l1("serialno", cmd)) {
	361	s = getenv("serial#");
	362	if (s)
29425be4	363	strncat(response, s, chars_left);
3aab70af SS	364	else
	365	strcpy(response, "FAILValue not set");
	366	} else {
593cbd93	367	error("unknown variable: %s\n", cmd);
3aab70af SS	368	strcpy(response, "FAILVariable not implemented");
	369	}
	370	fastboot_tx_write_str(response);
	371	}
	372
	373	static unsigned int rx_bytes_expected(void)
	374	{
	375	int rx_remain = download_size - download_bytes;
	376	if (rx_remain < 0)
	377	return 0;
	378	if (rx_remain > EP_BUFFER_SIZE)
	379	return EP_BUFFER_SIZE;
	380	return rx_remain;
	381	}
	382
	383	#define BYTES_PER_DOT 0x20000
	384	static void rx_handler_dl_image(struct usb_ep ep, struct usb_request req)
	385	{
	386	char response[RESPONSE_LEN];
	387	unsigned int transfer_size = download_size - download_bytes;
	388	const unsigned char *buffer = req->buf;
	389	unsigned int buffer_size = req->actual;
23d1d10c	390	unsigned int pre_dot_num, now_dot_num;
3aab70af SS	391
	392	if (req->status != 0) {
	393	printf("Bad status: %d\n", req->status);
	394	return;
	395	}
	396
	397	if (buffer_size < transfer_size)
	398	transfer_size = buffer_size;
	399
	400	memcpy((void *)CONFIG_USB_FASTBOOT_BUF_ADDR + download_bytes,
	401	buffer, transfer_size);
	402
23d1d10c	403	pre_dot_num = download_bytes / BYTES_PER_DOT;
3aab70af	404	download_bytes += transfer_size;
23d1d10c BS	405	now_dot_num = download_bytes / BYTES_PER_DOT;
	406
	407	if (pre_dot_num != now_dot_num) {
	408	putc('.');
	409	if (!(now_dot_num % 74))
	410	putc('\n');
	411	}
3aab70af SS	412
	413	/* Check if transfer is done */
	414	if (download_bytes >= download_size) {
	415	/*
	416	* Reset global transfer variable, keep download_bytes because
	417	* it will be used in the next possible flashing command
	418	*/
	419	download_size = 0;
	420	req->complete = rx_handler_command;
	421	req->length = EP_BUFFER_SIZE;
	422
	423	sprintf(response, "OKAY");
	424	fastboot_tx_write_str(response);
	425
	426	printf("\ndownloading of %d bytes finished\n", download_bytes);
	427	} else {
	428	req->length = rx_bytes_expected();
	429	if (req->length < ep->maxpacket)
	430	req->length = ep->maxpacket;
	431	}
	432
3aab70af SS	433	req->actual = 0;
	434	usb_ep_queue(ep, req, 0);
	435	}
	436
	437	static void cb_download(struct usb_ep ep, struct usb_request req)
	438	{
	439	char *cmd = req->buf;
	440	char response[RESPONSE_LEN];
	441
	442	strsep(&cmd, ":");
	443	download_size = simple_strtoul(cmd, NULL, 16);
	444	download_bytes = 0;
	445
	446	printf("Starting download of %d bytes\n", download_size);
	447
	448	if (0 == download_size) {
	449	sprintf(response, "FAILdata invalid size");
	450	} else if (download_size > CONFIG_USB_FASTBOOT_BUF_SIZE) {
	451	download_size = 0;
	452	sprintf(response, "FAILdata too large");
	453	} else {
	454	sprintf(response, "DATA%08x", download_size);
	455	req->complete = rx_handler_dl_image;
	456	req->length = rx_bytes_expected();
	457	if (req->length < ep->maxpacket)
	458	req->length = ep->maxpacket;
	459	}
	460	fastboot_tx_write_str(response);
	461	}
	462
	463	static void do_bootm_on_complete(struct usb_ep ep, struct usb_request req)
	464	{
	465	char boot_addr_start[12];
	466	char *bootm_args[] = { "bootm", boot_addr_start, NULL };
	467
	468	puts("Booting kernel..\n");
	469
	470	sprintf(boot_addr_start, "0x%lx", load_addr);
	471	do_bootm(NULL, 0, 2, bootm_args);
	472
	473	/* This only happens if image is somehow faulty so we start over */
	474	do_reset(NULL, 0, 0, NULL);
	475	}
	476
	477	static void cb_boot(struct usb_ep ep, struct usb_request req)
	478	{
	479	fastboot_func->in_req->complete = do_bootm_on_complete;
	480	fastboot_tx_write_str("OKAY");
	481	}
	482
267abc62 RH	483	static void do_exit_on_complete(struct usb_ep ep, struct usb_request req)
	484	{
	485	g_dnl_trigger_detach();
	486	}
	487
	488	static void cb_continue(struct usb_ep ep, struct usb_request req)
	489	{
	490	fastboot_func->in_req->complete = do_exit_on_complete;
	491	fastboot_tx_write_str("OKAY");
	492	}
	493
d1b5ed07 SR	494	#ifdef CONFIG_FASTBOOT_FLASH
	495	static void cb_flash(struct usb_ep ep, struct usb_request req)
	496	{
	497	char *cmd = req->buf;
	498	char response[RESPONSE_LEN];
	499
	500	strsep(&cmd, ":");
	501	if (!cmd) {
593cbd93	502	error("missing partition name\n");
d1b5ed07 SR	503	fastboot_tx_write_str("FAILmissing partition name");
	504	return;
	505	}
	506
	507	strcpy(response, "FAILno flash device defined");
	508	#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
	509	fb_mmc_flash_write(cmd, (void *)CONFIG_USB_FASTBOOT_BUF_ADDR,
	510	download_bytes, response);
	511	#endif
	512	fastboot_tx_write_str(response);
	513	}
	514	#endif
	515
de195620 MS	516	static void cb_oem(struct usb_ep ep, struct usb_request req)
	517	{
	518	char *cmd = req->buf;
372d7dec RH	519	#ifdef CONFIG_FASTBOOT_FLASH
	520	if (strncmp("format", cmd + 4, 6) == 0) {
	521	char cmdbuf[32];
	522	sprintf(cmdbuf, "gpt write mmc %x $partitions",
	523	CONFIG_FASTBOOT_FLASH_MMC_DEV);
	524	if (run_command(cmdbuf, 0))
	525	fastboot_tx_write_str("FAIL");
	526	else
	527	fastboot_tx_write_str("OKAY");
	528	} else
	529	#endif
de195620 MS	530	if (strncmp("unlock", cmd + 4, 8) == 0) {
	531	fastboot_tx_write_str("FAILnot implemented");
	532	}
	533	else {
	534	fastboot_tx_write_str("FAILunknown oem command");
	535	}
	536	}
	537
89792381 DK	538	#ifdef CONFIG_FASTBOOT_FLASH
	539	static void cb_erase(struct usb_ep ep, struct usb_request req)
	540	{
	541	char *cmd = req->buf;
	542	char response[RESPONSE_LEN];
	543
	544	strsep(&cmd, ":");
	545	if (!cmd) {
	546	error("missing partition name");
	547	fastboot_tx_write_str("FAILmissing partition name");
	548	return;
	549	}
	550
	551	strcpy(response, "FAILno flash device defined");
	552
	553	#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
	554	fb_mmc_erase(cmd, response);
	555	#endif
	556	fastboot_tx_write_str(response);
	557	}
	558	#endif
	559
3aab70af SS	560	struct cmd_dispatch_info {
	561	char *cmd;
	562	void (cb)(struct usb_ep ep, struct usb_request *req);
	563	};
	564
	565	static const struct cmd_dispatch_info cmd_dispatch_info[] = {
	566	{
	567	.cmd = "reboot",
	568	.cb = cb_reboot,
	569	}, {
	570	.cmd = "getvar:",
	571	.cb = cb_getvar,
	572	}, {
	573	.cmd = "download:",
	574	.cb = cb_download,
	575	}, {
	576	.cmd = "boot",
	577	.cb = cb_boot,
267abc62 RH	578	}, {
	579	.cmd = "continue",
	580	.cb = cb_continue,
3aab70af	581	},
d1b5ed07 SR	582	#ifdef CONFIG_FASTBOOT_FLASH
	583	{
	584	.cmd = "flash",
	585	.cb = cb_flash,
89792381 DK	586	}, {
	587	.cmd = "erase",
	588	.cb = cb_erase,
d1b5ed07 SR	589	},
d1b5ed07 SR	590	#endif
de195620 MS	591	{
	592	.cmd = "oem",
	593	.cb = cb_oem,
	594	},
3aab70af SS	595	};
	596
	597	static void rx_handler_command(struct usb_ep ep, struct usb_request req)
	598	{
	599	char *cmdbuf = req->buf;
	600	void (func_cb)(struct usb_ep ep, struct usb_request *req) = NULL;
	601	int i;
	602
	603	for (i = 0; i < ARRAY_SIZE(cmd_dispatch_info); i++) {
	604	if (!strcmp_l1(cmd_dispatch_info[i].cmd, cmdbuf)) {
	605	func_cb = cmd_dispatch_info[i].cb;
	606	break;
	607	}
	608	}
	609
593cbd93 SR	610	if (!func_cb) {
593cbd93 SR	611	error("unknown command: %s\n", cmdbuf);
3aab70af	612	fastboot_tx_write_str("FAILunknown command");
593cbd93	613	} else {
e2140588 EN	614	if (req->actual < req->length) {
	615	u8 buf = (u8 )req->buf;
	616	buf[req->actual] = 0;
	617	func_cb(ep, req);
	618	} else {
	619	error("buffer overflow\n");
	620	fastboot_tx_write_str("FAILbuffer overflow");
	621	}
593cbd93	622	}
3aab70af SS	623
	624	if (req->status == 0) {
	625	*cmdbuf = '\0';
	626	req->actual = 0;
	627	usb_ep_queue(ep, req, 0);
	628	}
	629	}