upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/include/usb_mass_storage.h

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/*
* Copyright (C) 2011 Samsung Electrnoics
* Lukasz Majewski <l.majewski@samsung.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* aloong with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef __USB_MASS_STORAGE_H__
#define __USB_MASS_STORAGE_H__
#define SECTOR_SIZE 0x200
#include <mmc.h>
struct ums_device {
struct mmc *mmc;
int dev_num;
int offset;
int part_size;
};
struct ums_board_info {
int (*read_sector)(struct ums_device *ums_dev,
ulong start, lbaint_t blkcnt, void *buf);
int (*write_sector)(struct ums_device *ums_dev,
ulong start, lbaint_t blkcnt, const void *buf);
void (*get_capacity)(struct ums_device *ums_dev,
long long int *capacity);
const char *name;
struct ums_device ums_dev;
};
extern void board_usb_init(void);
extern int fsg_init(struct ums_board_info *);
extern void fsg_cleanup(void);
extern struct ums_board_info *board_ums_init(unsigned int,
unsigned int, unsigned int);
extern int usb_gadget_handle_interrupts(void);
extern int fsg_main_thread(void *);
#endif /* __USB_MASS_STORAGE_H__ */