this patch implement rockusb protocol on the device side. this is based on USB download gadget infrastructure. the rockusb function implements the rd, wl, rid commands. it can work with rkdeveloptool

Signed-off-by: Eddie Cai eddie.cai.linux@gmail.com Reviewed-by: Simon Glass sjg@chromium.org

Changes in v8: -none

Changes in v7: -none

Changes in v6: -move some data to f_rockusb structure

Changes in v5: -fix build error when build non-rockchip board -fix checkpatch error

Changes in v4: -use enum instead of macro define -move some structure define and macro to f_rockusb.h -add some function comment as Simon required -address other comment from Simon -fix build error as Lukasz point out

--- arch/arm/include/asm/arch-rockchip/f_rockusb.h | 132 +++++ drivers/usb/gadget/Kconfig | 8 + drivers/usb/gadget/Makefile | 1 + drivers/usb/gadget/f_rockusb.c | 691 +++++++++++++++++++++++++ 4 files changed, 832 insertions(+) create mode 100644 arch/arm/include/asm/arch-rockchip/f_rockusb.h create mode 100644 drivers/usb/gadget/f_rockusb.c

diff --git a/arch/arm/include/asm/arch-rockchip/f_rockusb.h b/arch/arm/include/asm/arch-rockchip/f_rockusb.h new file mode 100644 index 0000000..c207a78 --- /dev/null +++ b/arch/arm/include/asm/arch-rockchip/f_rockusb.h @@ -0,0 +1,132 @@ +/* + * (C) Copyright 2017 + * + * Eddie Cai eddie.cai.linux@gmail.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _F_ROCKUSB_H_ +#define _F_ROCKUSB_H_ +#include <blk.h> + +#define ROCKUSB_VERSION "0.1" + +#define ROCKUSB_INTERFACE_CLASS 0xff +#define ROCKUSB_INTERFACE_SUB_CLASS 0x06 +#define ROCKUSB_INTERFACE_PROTOCOL 0x05 + +#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 +/* + * 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. + */ + +#define CONFIG_ROCKUSB_BUF_ADDR CONFIG_SYS_LOAD_ADDR +#define CONFIG_ROCKUSB_BUF_SIZE 0x08000000 + +#define RKUSB_STATUS_IDLE 0 +#define RKUSB_STATUS_CMD 1 +#define RKUSB_STATUS_RXDATA 2 +#define RKUSB_STATUS_TXDATA 3 +#define RKUSB_STATUS_CSW 4 +#define RKUSB_STATUS_RXDATA_PREPARE 5 +#define RKUSB_STATUS_TXDATA_PREPARE 6 + +enum rkusb_command { +K_FW_TEST_UNIT_READY = 0x00, +K_FW_READ_FLASH_ID = 0x01, +K_FW_SET_DEVICE_ID = 0x02, +K_FW_TEST_BAD_BLOCK = 0x03, +K_FW_READ_10 = 0x04, +K_FW_WRITE_10 = 0x05, +K_FW_ERASE_10 = 0x06, +K_FW_WRITE_SPARE = 0x07, +K_FW_READ_SPARE = 0x08, + +K_FW_ERASE_10_FORCE = 0x0b, +K_FW_GET_VERSION = 0x0c, + +K_FW_LBA_READ_10 = 0x14, +K_FW_LBA_WRITE_10 = 0x15, +K_FW_ERASE_SYS_DISK = 0x16, +K_FW_SDRAM_READ_10 = 0x17, +K_FW_SDRAM_WRITE_10 = 0x18, +K_FW_SDRAM_EXECUTE = 0x19, +K_FW_READ_FLASH_INFO = 0x1A, +K_FW_GET_CHIP_VER = 0x1B, +K_FW_LOW_FORMAT = 0x1C, +K_FW_SET_RESET_FLAG = 0x1E, +K_FW_SPI_READ_10 = 0x21, +K_FW_SPI_WRITE_10 = 0x22, + +K_FW_SESSION = 0X30, +K_FW_RESET = 0xff, +}; + +#define CBW_DIRECTION_OUT 0x00 +#define CBW_DIRECTION_IN 0x80 + +struct cmd_dispatch_info { + enum rkusb_command cmd; + /* call back function to handle rockusb command */ + void (*cb)(struct usb_ep *ep, struct usb_request *req); +}; + +/* Bulk-only data structures */ + +/* Command Block Wrapper */ +struct fsg_bulk_cb_wrap { + __le32 signature; /* Contains 'USBC' */ + u32 tag; /* Unique per command id */ + __le32 data_transfer_length; /* Size of the data */ + u8 flags; /* Direction in bit 7 */ + u8 lun; /* lun (normally 0) */ + u8 length; /* Of the CDB, <= MAX_COMMAND_SIZE */ + u8 CDB[16]; /* Command Data Block */ +}; + +#define USB_BULK_CB_WRAP_LEN 31 +#define USB_BULK_CB_SIG 0x43425355 /* Spells out USBC */ +#define USB_BULK_IN_FLAG 0x80 + +/* Command status Wrapper */ +struct bulk_cs_wrap { + __le32 signature; /* Should = 'USBS' */ + u32 tag; /* Same as original command */ + __le32 residue; /* Amount not transferred */ + u8 status; /* See below */ +}; + +#define USB_BULK_CS_WRAP_LEN 13 +#define USB_BULK_CS_SIG 0x53425355 /* Spells out 'USBS' */ +#define USB_STATUS_PASS 0 +#define USB_STATUS_FAIL 1 +#define USB_STATUS_PHASE_ERROR 2 + +#define CSW_GOOD 0x00 +#define CSW_FAIL 0x01 + +struct f_rockusb { + struct usb_function usb_function; + struct usb_ep *in_ep, *out_ep; + struct usb_request *in_req, *out_req; + char *rockusb_dev_type; + unsigned int rockusb_dev_index; + unsigned int download_tag; + unsigned int download_lba; + unsigned int download_size; + unsigned int download_bytes; + struct blk_desc *download_desc; + int reboot_flag; +}; + +/* init rockusb device, tell rockusb which device you want to read/write*/ +void rockusb_dev_init(char *dev_type, int dev_index); +#endif /* _F_ROCKUSB_H_ */ + diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 261ed12..d61d9ad 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -112,6 +112,14 @@ config G_DNL_VENDOR_NUM config G_DNL_PRODUCT_NUM hex "Product ID of USB device"

+config USB_FUNCTION_ROCKUSB + bool "Enable USB rockusb gadget" + help + Rockusb protocol is widely used by Rockchip SoC based devices. It can + read/write info, image to/from devices. This enables the USB part of + the rockusb gadget.for more detail about Rockusb protocol, please see + doc/README.rockusb + config USBNET_DEVADDR string "USB Gadget Ethernet device mac address" default "de:ad:be:ef:00:01" diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 5e316a7..a3fb2c8 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -28,6 +28,7 @@ obj-$(CONFIG_USB_FUNCTION_THOR) += f_thor.o obj-$(CONFIG_USB_FUNCTION_DFU) += f_dfu.o obj-$(CONFIG_USB_FUNCTION_MASS_STORAGE) += f_mass_storage.o obj-$(CONFIG_USB_FUNCTION_FASTBOOT) += f_fastboot.o +obj-$(CONFIG_USB_FUNCTION_ROCKUSB) += f_rockusb.o endif endif ifdef CONFIG_USB_ETHER diff --git a/drivers/usb/gadget/f_rockusb.c b/drivers/usb/gadget/f_rockusb.c new file mode 100644 index 0000000..efd110b --- /dev/null +++ b/drivers/usb/gadget/f_rockusb.c @@ -0,0 +1,691 @@ +/* + * (C) Copyright 2017 + * + * Eddie Cai eddie.cai.linux@gmail.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <config.h> +#include <common.h> +#include <errno.h> +#include <malloc.h> +#include <memalign.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> +#include <asm/arch/f_rockusb.h> + +static inline struct f_rockusb *func_to_rockusb(struct usb_function *f) +{ + return container_of(f, struct f_rockusb, usb_function); +} + +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 = cpu_to_le16(64), +}; + +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 = 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 = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(512), +}; + +static struct usb_interface_descriptor interface_desc = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bInterfaceNumber = 0x00, + .bAlternateSetting = 0x00, + .bNumEndpoints = 0x02, + .bInterfaceClass = ROCKUSB_INTERFACE_CLASS, + .bInterfaceSubClass = ROCKUSB_INTERFACE_SUB_CLASS, + .bInterfaceProtocol = ROCKUSB_INTERFACE_PROTOCOL, +}; + +static struct usb_descriptor_header *rkusb_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 *rkusb_hs_function[] = { + (struct usb_descriptor_header *)&interface_desc, + (struct usb_descriptor_header *)&hs_ep_in, + (struct usb_descriptor_header *)&hs_ep_out, + NULL, +}; + +static const char rkusb_name[] = "Rockchip Rockusb"; + +static struct usb_string rkusb_string_defs[] = { + [0].s = rkusb_name, + { } /* end of list */ +}; + +static struct usb_gadget_strings stringtab_rkusb = { + .language = 0x0409, /* en-us */ + .strings = rkusb_string_defs, +}; + +static struct usb_gadget_strings *rkusb_strings[] = { + &stringtab_rkusb, + NULL, +}; + +static struct f_rockusb *rockusb_func; +static void rx_handler_command(struct usb_ep *ep, struct usb_request *req); +static int rockusb_tx_write_csw(u32 tag, int residue, u8 status, int size); + +struct f_rockusb *get_rkusb(void) +{ + struct f_rockusb *f_rkusb = rockusb_func; + if (!f_rkusb) { + f_rkusb = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_rkusb)); + if (!f_rkusb) + return 0; + + rockusb_func = f_rkusb; + memset(f_rkusb, 0, sizeof(*f_rkusb)); + } + return f_rkusb; +} + +static struct usb_endpoint_descriptor *rkusb_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 void rockusb_complete(struct usb_ep *ep, struct usb_request *req) +{ + int status = req->status; + if (!status) + return; + debug("status: %d ep '%s' trans: %d\n", status, ep->name, req->actual); +} + +/* config the rockusb device*/ +static int rockusb_bind(struct usb_configuration *c, struct usb_function *f) +{ + int id; + struct usb_gadget *gadget = c->cdev->gadget; + struct f_rockusb *f_rkusb = func_to_rockusb(f); + const char *s; + + 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; + + rkusb_string_defs[0].id = id; + interface_desc.iInterface = id; + + f_rkusb->in_ep = usb_ep_autoconfig(gadget, &fs_ep_in); + if (!f_rkusb->in_ep) + return -ENODEV; + f_rkusb->in_ep->driver_data = c->cdev; + + f_rkusb->out_ep = usb_ep_autoconfig(gadget, &fs_ep_out); + if (!f_rkusb->out_ep) + return -ENODEV; + f_rkusb->out_ep->driver_data = c->cdev; + + f->descriptors = rkusb_fs_function; + + if (gadget_is_dualspeed(gadget)) { + hs_ep_in.bEndpointAddress = fs_ep_in.bEndpointAddress; + hs_ep_out.bEndpointAddress = fs_ep_out.bEndpointAddress; + f->hs_descriptors = rkusb_hs_function; + } + + s = getenv("serial#"); + if (s) + g_dnl_set_serialnumber((char *)s); + + return 0; +} + +static void rockusb_unbind(struct usb_configuration *c, struct usb_function *f) +{ + /* clear the configuration*/ + memset(rockusb_func, 0, sizeof(*rockusb_func)); +} + +static void rockusb_disable(struct usb_function *f) +{ + struct f_rockusb *f_rkusb = func_to_rockusb(f); + + usb_ep_disable(f_rkusb->out_ep); + usb_ep_disable(f_rkusb->in_ep); + + if (f_rkusb->out_req) { + free(f_rkusb->out_req->buf); + usb_ep_free_request(f_rkusb->out_ep, f_rkusb->out_req); + f_rkusb->out_req = NULL; + } + if (f_rkusb->in_req) { + free(f_rkusb->in_req->buf); + usb_ep_free_request(f_rkusb->in_ep, f_rkusb->in_req); + f_rkusb->in_req = NULL; + } +} + +static struct usb_request *rockusb_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 rockusb_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_rockusb *f_rkusb = func_to_rockusb(f); + const struct usb_endpoint_descriptor *d; + + debug("%s: func: %s intf: %d alt: %d\n", + __func__, f->name, interface, alt); + + d = rkusb_ep_desc(gadget, &fs_ep_out, &hs_ep_out); + ret = usb_ep_enable(f_rkusb->out_ep, d); + if (ret) { + printf("failed to enable out ep\n"); + return ret; + } + + f_rkusb->out_req = rockusb_start_ep(f_rkusb->out_ep); + if (!f_rkusb->out_req) { + printf("failed to alloc out req\n"); + ret = -EINVAL; + goto err; + } + f_rkusb->out_req->complete = rx_handler_command; + + d = rkusb_ep_desc(gadget, &fs_ep_in, &hs_ep_in); + ret = usb_ep_enable(f_rkusb->in_ep, d); + if (ret) { + printf("failed to enable in ep\n"); + goto err; + } + + f_rkusb->in_req = rockusb_start_ep(f_rkusb->in_ep); + if (!f_rkusb->in_req) { + printf("failed alloc req in\n"); + ret = -EINVAL; + goto err; + } + f_rkusb->in_req->complete = rockusb_complete; + + ret = usb_ep_queue(f_rkusb->out_ep, f_rkusb->out_req, 0); + if (ret) + goto err; + + return 0; +err: + rockusb_disable(f); + return ret; +} + +static int rockusb_add(struct usb_configuration *c) +{ + struct f_rockusb *f_rkusb = get_rkusb(); + int status; + + debug("%s: cdev: 0x%p\n", __func__, c->cdev); + + f_rkusb->usb_function.name = "f_rockusb"; + f_rkusb->usb_function.bind = rockusb_bind; + f_rkusb->usb_function.unbind = rockusb_unbind; + f_rkusb->usb_function.set_alt = rockusb_set_alt; + f_rkusb->usb_function.disable = rockusb_disable; + f_rkusb->usb_function.strings = rkusb_strings; + + status = usb_add_function(c, &f_rkusb->usb_function); + if (status) { + free(f_rkusb); + rockusb_func = f_rkusb; + } + return status; +} + +void rockusb_dev_init(char *dev_type, int dev_index) +{ + struct f_rockusb *f_rkusb = get_rkusb(); + f_rkusb->rockusb_dev_type = dev_type; + f_rkusb->rockusb_dev_index = dev_index; +} + +DECLARE_GADGET_BIND_CALLBACK(usb_dnl_rockusb, rockusb_add); + +static int rockusb_tx_write(const char *buffer, unsigned int buffer_size) +{ + struct usb_request *in_req = rockusb_func->in_req; + int ret; + + memcpy(in_req->buf, buffer, buffer_size); + in_req->length = buffer_size; + usb_ep_dequeue(rockusb_func->in_ep, in_req); + ret = usb_ep_queue(rockusb_func->in_ep, in_req, 0); + if (ret) + printf("Error %d on queue\n", ret); + return 0; +} + +static int rockusb_tx_write_str(const char *buffer) +{ + return rockusb_tx_write(buffer, strlen(buffer)); +} + +#ifdef DEBUG +static void printcbw(char *buf) +{ + ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw, + sizeof(struct fsg_bulk_cb_wrap)); + + memcpy((char *)cbw, buf, USB_BULK_CB_WRAP_LEN); + + debug("cbw: signature:%x\n", cbw->signature); + debug("cbw: tag=%x\n", cbw->tag); + debug("cbw: data_transfer_length=%d\n", cbw->data_transfer_length); + debug("cbw: flags=%x\n", cbw->flags); + debug("cbw: lun=%d\n", cbw->lun); + debug("cbw: length=%d\n", cbw->length); + debug("cbw: ucOperCode=%x\n", cbw->CDB[0]); + debug("cbw: ucReserved=%x\n", cbw->CDB[1]); + debug("cbw: dwAddress:%x %x %x %x\n", cbw->CDB[5], cbw->CDB[4], + cbw->CDB[3], cbw->CDB[2]); + debug("cbw: ucReserved2=%x\n", cbw->CDB[6]); + debug("cbw: uslength:%x %x\n", cbw->CDB[8], cbw->CDB[7]); +} + +static void printcsw(char *buf) +{ + ALLOC_CACHE_ALIGN_BUFFER(struct bulk_cs_wrap, csw, + sizeof(struct bulk_cs_wrap)); + memcpy((char *)csw, buf, USB_BULK_CS_WRAP_LEN); + debug("csw: signature:%x\n", csw->signature); + debug("csw: tag:%x\n", csw->tag); + debug("csw: residue:%x\n", csw->residue); + debug("csw: status:%x\n", csw->status); +} +#endif + +static int rockusb_tx_write_csw(u32 tag, int residue, u8 status, int size) +{ + ALLOC_CACHE_ALIGN_BUFFER(struct bulk_cs_wrap, csw, + sizeof(struct bulk_cs_wrap)); + csw->signature = cpu_to_le32(USB_BULK_CS_SIG); + csw->tag = tag; + csw->residue = cpu_to_be32(residue); + csw->status = status; +#ifdef DEBUG + printcsw((char *)&csw); +#endif + return rockusb_tx_write((char *)csw, size); +} + +static unsigned int rx_bytes_expected(struct usb_ep *ep) +{ + struct f_rockusb *f_rkusb = get_rkusb(); + int rx_remain = f_rkusb->download_size - f_rkusb->download_bytes; + unsigned int rem; + unsigned int maxpacket = ep->maxpacket; + + if (rx_remain <= 0) + return 0; + else if (rx_remain > EP_BUFFER_SIZE) + return EP_BUFFER_SIZE; + + rem = rx_remain % maxpacket; + if (rem > 0) + rx_remain = rx_remain + (maxpacket - rem); + + return rx_remain; +} + +/* usb_request complete call back to handle down load image */ +static void rx_handler_dl_image(struct usb_ep *ep, struct usb_request *req) +{ + struct f_rockusb *f_rkusb = get_rkusb(); + unsigned int transfer_size = 0; + const unsigned char *buffer = req->buf; + unsigned int buffer_size = req->actual; + + transfer_size = f_rkusb->download_size - f_rkusb->download_bytes; + if (!f_rkusb->download_desc) { + printf("rx_handler_dl_image blk_get_dev\n"); + f_rkusb->download_desc = blk_get_dev(f_rkusb->rockusb_dev_type, + f_rkusb->rockusb_dev_index); + if (!f_rkusb->download_desc || + f_rkusb->download_desc->type == DEV_TYPE_UNKNOWN) { + error("invalid mmc device\n"); + rockusb_tx_write_csw(f_rkusb->download_tag, 0, CSW_FAIL, + USB_BULK_CS_WRAP_LEN); + return; + } + } + + if (req->status != 0) { + printf("Bad status: %d\n", req->status); + rockusb_tx_write_csw(f_rkusb->download_tag, 0, + CSW_FAIL, USB_BULK_CS_WRAP_LEN); + return; + } + + if (buffer_size < transfer_size) + transfer_size = buffer_size; + + memcpy((void *)CONFIG_ROCKUSB_BUF_ADDR + f_rkusb->download_bytes, + buffer, transfer_size); + f_rkusb->download_bytes += transfer_size; + + /* Check if transfer is done */ + if (f_rkusb->download_bytes >= f_rkusb->download_size) { + int blks = 0, blkcnt = f_rkusb->download_size/512; + printf("download %d bytes finished, start writing to lba %x\n", + f_rkusb->download_bytes, f_rkusb->download_lba); + blks = blk_dwrite(f_rkusb->download_desc, + f_rkusb->download_lba, blkcnt, + (char *)CONFIG_ROCKUSB_BUF_ADDR); + if (blks != blkcnt) { + error("failed writing to device %s: %d\n", + f_rkusb->rockusb_dev_type, + f_rkusb->rockusb_dev_index); + rockusb_tx_write_csw(f_rkusb->download_tag, 0, + CSW_FAIL, USB_BULK_CS_WRAP_LEN); + return; + } + + req->complete = rx_handler_command; + req->length = EP_BUFFER_SIZE; + f_rkusb->download_size = 0; + printf("done\n"); + rockusb_tx_write_csw(f_rkusb->download_tag, 0, CSW_GOOD, + USB_BULK_CS_WRAP_LEN); + } else { + req->length = rx_bytes_expected(ep); + } + + req->actual = 0; + usb_ep_queue(ep, req, 0); +} + +static void cb_test_unit_ready(struct usb_ep *ep, struct usb_request *req) +{ + ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw, + sizeof(struct fsg_bulk_cb_wrap)); + + memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN); + + rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length, + CSW_GOOD, USB_BULK_CS_WRAP_LEN); +} + +static void cb_read_storage_id(struct usb_ep *ep, struct usb_request *req) +{ + ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw, + sizeof(struct fsg_bulk_cb_wrap)); + char emmc_id[] = "EMMC "; + + printf("cb_read_storage_id\n"); + memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN); + rockusb_tx_write_str(emmc_id); + rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length, CSW_GOOD, + USB_BULK_CS_WRAP_LEN); +} + +static void cb_write_lba(struct usb_ep *ep, struct usb_request *req) +{ + ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw, + sizeof(struct fsg_bulk_cb_wrap)); + int sector_count; + struct f_rockusb *f_rkusb = get_rkusb(); + + memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN); + sector_count = (int)get_unaligned_be16(&cbw->CDB[7]); + f_rkusb->download_lba = get_unaligned_be32(&cbw->CDB[2]); + f_rkusb->download_size = sector_count * 512; + f_rkusb->download_bytes = 0; + f_rkusb->download_tag = cbw->tag; + if ((0 == f_rkusb->download_size) || + (f_rkusb->download_size > CONFIG_ROCKUSB_BUF_SIZE)) { + rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length, + CSW_FAIL, USB_BULK_CS_WRAP_LEN); + } else { + req->complete = rx_handler_dl_image; + req->length = rx_bytes_expected(ep); + } +} + +int __weak rkusb_set_reboot_flag(int flag) +{ + struct f_rockusb *f_rkusb = get_rkusb(); + + printf("rkusb_set_reboot_flag: %d\n", f_rkusb->reboot_flag); + return -ENOSYS; +} + +static void compl_do_reset(struct usb_ep *ep, struct usb_request *req) +{ + struct f_rockusb *f_rkusb = get_rkusb(); + + rkusb_set_reboot_flag(f_rkusb->reboot_flag); + do_reset(NULL, 0, 0, NULL); +} + +static void cb_reboot(struct usb_ep *ep, struct usb_request *req) +{ + ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw, + sizeof(struct fsg_bulk_cb_wrap)); + struct f_rockusb *f_rkusb = get_rkusb(); + + f_rkusb->reboot_flag = 0; + memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN); + f_rkusb->reboot_flag = cbw->CDB[1]; + rockusb_func->in_req->complete = compl_do_reset; + rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length, CSW_GOOD, + USB_BULK_CS_WRAP_LEN); +} + +static void cb_not_support(struct usb_ep *ep, struct usb_request *req) +{ + ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw, + sizeof(struct fsg_bulk_cb_wrap)); + + memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN); + printf("Rockusb command %x not support yet\n", cbw->CDB[0]); + rockusb_tx_write_csw(cbw->tag, 0, CSW_FAIL, USB_BULK_CS_WRAP_LEN); +} + +static const struct cmd_dispatch_info cmd_dispatch_info[] = { + { + .cmd = K_FW_TEST_UNIT_READY, + .cb = cb_test_unit_ready, + }, + { + .cmd = K_FW_READ_FLASH_ID, + .cb = cb_read_storage_id, + }, + { + .cmd = K_FW_SET_DEVICE_ID, + .cb = cb_not_support, + }, + { + .cmd = K_FW_TEST_BAD_BLOCK, + .cb = cb_not_support, + }, + { + .cmd = K_FW_READ_10, + .cb = cb_not_support, + }, + { + .cmd = K_FW_WRITE_10, + .cb = cb_not_support, + }, + { + .cmd = K_FW_ERASE_10, + .cb = cb_not_support, + }, + { + .cmd = K_FW_WRITE_SPARE, + .cb = cb_not_support, + }, + { + .cmd = K_FW_READ_SPARE, + .cb = cb_not_support, + }, + { + .cmd = K_FW_ERASE_10_FORCE, + .cb = cb_not_support, + }, + { + .cmd = K_FW_GET_VERSION, + .cb = cb_not_support, + }, + { + .cmd = K_FW_LBA_READ_10, + .cb = cb_not_support, + }, + { + .cmd = K_FW_LBA_WRITE_10, + .cb = cb_write_lba, + }, + { + .cmd = K_FW_ERASE_SYS_DISK, + .cb = cb_not_support, + }, + { + .cmd = K_FW_SDRAM_READ_10, + .cb = cb_not_support, + }, + { + .cmd = K_FW_SDRAM_WRITE_10, + .cb = cb_not_support, + }, + { + .cmd = K_FW_SDRAM_EXECUTE, + .cb = cb_not_support, + }, + { + .cmd = K_FW_READ_FLASH_INFO, + .cb = cb_not_support, + }, + { + .cmd = K_FW_GET_CHIP_VER, + .cb = cb_not_support, + }, + { + .cmd = K_FW_LOW_FORMAT, + .cb = cb_not_support, + }, + { + .cmd = K_FW_SET_RESET_FLAG, + .cb = cb_not_support, + }, + { + .cmd = K_FW_SPI_READ_10, + .cb = cb_not_support, + }, + { + .cmd = K_FW_SPI_WRITE_10, + .cb = cb_not_support, + }, + { + .cmd = K_FW_SESSION, + .cb = cb_not_support, + }, + { + .cmd = K_FW_RESET, + .cb = cb_reboot, + }, +}; + +static void rx_handler_command(struct usb_ep *ep, struct usb_request *req) +{ + void (*func_cb)(struct usb_ep *ep, struct usb_request *req) = NULL; + ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw, + sizeof(struct fsg_bulk_cb_wrap)); + char *cmdbuf = req->buf; + int i; + + if (req->status || req->length == 0) + return; + + memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN); +#ifdef DEBUG + printcbw(req->buf); +#endif + + for (i = 0; i < ARRAY_SIZE(cmd_dispatch_info); i++) { + if (cmd_dispatch_info[i].cmd == cbw->CDB[0]) { + func_cb = cmd_dispatch_info[i].cb; + break; + } + } + + if (!func_cb) { + error("unknown command: %s", (char *)req->buf); + rockusb_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"); + rockusb_tx_write_str("FAILbuffer overflow"); + } + } + + *cmdbuf = '\0'; + req->actual = 0; + usb_ep_queue(ep, req, 0); +}

add a simple readme to introduce rockusb and tell people how to use it

Signed-off-by: Eddie Cai eddie.cai.linux@gmail.com Reviewed-by: Simon Glass sjg@chromium.org

Changes in v8: -none

Changes in v7: -none

Changes in v6: -none

Changes in v5: -none

Changes in v4: -add some blank line to make it look better

Changes in v3: -fix checkpatch error

--- doc/README.rockusb | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 doc/README.rockusb

diff --git a/doc/README.rockusb b/doc/README.rockusb new file mode 100644 index 0000000..5405dc4 --- /dev/null +++ b/doc/README.rockusb @@ -0,0 +1,51 @@ +Rockusb (Rockchip USB protocol) +===================================================== + +Overview +-------- + +Rockusb protocol is widely used by Rockchip SoC based devices. It can +read/write info, image to/from devices. This document briefly describes how to +use Rockusb for upgrading firmware (e.g. kernel, u-boot, rootfs, etc.). + +Tools +-------- +There are many tools can support Rockusb protocol. rkdeveloptool +(https://github.com/rockchip-linux/rkdeveloptool) is open source, +It is maintained by Rockchip. People don't want to build from source +can download from here +(https://github.com/rockchip-linux/rkbin/blob/master/tools/rkdeveloptool) + +Usage +-------- +The Usage of Rockusb command is: + +rockusb <USB_controller> <devtype> <dev[:part]> + +e.g. rockusb 0 mmc 0 + +On your U-Boot console, type this command to enter rockusb mode. +On your host PC. use lsusb command. you should see a usb device +using 0x2207 as its USB verdor id. + +for more detail about the rkdeveloptool. please read the usage. + +rkdeveloptool -h + +use rkdeveloptool wl command to write lba. BeginSec is the lba on device +you want to write. + +sudo rkdeveloptool wl <BeginSec> <File> + +to flash U-Boot image use below command. U-Boot binary is made by mkimage. +see doc/README.rockchip for more detail about how to get U-Boot binary. + +sudo rkdeveloptool wl 64 <U-Boot binary> + +There are plenty of Rockusb command. but wl(write lba) and +rd(reboot) command. These two command can let people flash +image to device. + +To do +----- +* Fully support Rockusb protocol