119 lines
4.8 KiB
C
119 lines
4.8 KiB
C
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/**************************************************************************/
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/*!
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@file mscd_app_romdisk.c
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@author hathach (tinyusb.org)
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@section LICENSE
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Software License Agreement (BSD License)
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Copyright (c) 2013, hathach (tinyusb.org)
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holders nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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This file is part of the tinyusb stack.
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*/
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/**************************************************************************/
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#include "mscd_app.h"
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#if TUSB_CFG_DEVICE_MSC && defined (MSCD_APP_ROMDISK)
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//--------------------------------------------------------------------+
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// INCLUDE
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//--------------------------------------------------------------------+
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//--------------------------------------------------------------------+
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// MACRO CONSTANT TYPEDEF
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//--------------------------------------------------------------------+
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#define README_CONTENTS \
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"This is tinyusb's MassStorage Class demo.\r\n\r\n\
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If you find any bugs or get any questions, feel free to file an\r\n\
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issue at github.com/hathach/tinyusb"
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//--------------------------------------------------------------------+
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// INTERNAL OBJECT & FUNCTION DECLARATION
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//--------------------------------------------------------------------+
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const uint8_t mscd_app_rommdisk[DISK_BLOCK_NUM][DISK_BLOCK_SIZE] =
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{
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//------------- Boot Sector -------------//
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[0] =
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{
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0xEB, 0x3C, 0x90, 0x4D, 0x53, 0x44, 0x4F, 0x53, 0x35, 0x2E, 0x30, 0x00, 0x02, 0x01, 0x01, 0x00,
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0x01, 0x10, 0x00, 0x10, 0x00, 0xF8, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x29, 0x34, 0x12, 0x00, 0x00, 0x74, 0x69, 0x6E, 0x79, 0x75,
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0x73, 0x62, 0x20, 0x6D, 0x73, 0x63, 0x46, 0x41, 0x54, 0x31, 0x32, 0x20, 0x20, 0x20, 0x00, 0x00,
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[510] = 0x55, [511] = 0xAA // FAT magic code
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},
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//------------- FAT12 Table (first 2 entries are F8FF, third entry is cluster end of readme file-------------//
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[1] =
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{
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0xF8, 0xFF, 0xFF, 0xFF, 0x0F
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},
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//------------- Root Directory -------------//
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[2] =
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{
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// first entry is volume label
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0x54, 0x49, 0x4E, 0x59, 0x55, 0x53, 0x42, 0x20, 0x4D, 0x53, 0x43, 0x08, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x4F, 0x6D, 0x65, 0x43, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// second entry is readme file
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0x52, 0x45, 0x41, 0x44, 0x4D, 0x45, 0x20, 0x20, 0x54, 0x58, 0x54, 0x20, 0x00, 0xC6, 0x52, 0x6D,
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0x65, 0x43, 0x65, 0x43, 0x00, 0x00, 0x88, 0x6D, 0x65, 0x43, 0x02, 0x00,
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sizeof(README_CONTENTS)-1, 0x00, 0x00, 0x00 // readme's filesize
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},
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//------------- Readme Content -------------//
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[3] = README_CONTENTS
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};
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ATTR_USB_MIN_ALIGNMENT
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static uint8_t ramdisk_buffer[DISK_BLOCK_SIZE] TUSB_CFG_ATTR_USBRAM;
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//--------------------------------------------------------------------+
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// IMPLEMENTATION
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//--------------------------------------------------------------------+
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uint16_t read10(uint8_t coreid, uint8_t lun, scsi_read10_t* p_read10, void** pp_buffer)
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{
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uint8_t block_count = __be2h_16(p_read10->block_count);
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memcpy(ramdisk_buffer, mscd_app_rommdisk[ __be2le(p_read10->lba)], DISK_BLOCK_SIZE);
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(*pp_buffer) = ramdisk_buffer;
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return block_count*DISK_BLOCK_SIZE;
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}
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// Stall write10 as this is readonly disk
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uint16_t write10(uint8_t coreid, uint8_t lun, scsi_read10_t* p_read10, void** pp_buffer)
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{
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(*pp_buffer) = NULL;
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return 0;
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}
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#endif
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