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Adding DFU check to validate that we aren't trying to flash too far

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- Add _app_rom_end address location that points to the end of flash
- Check when flashing each page whether the end of the page exceeds the end of the flash
This commit is contained in:
Jacob Alexander 2016-07-23 17:50:59 -07:00
parent 5162980791
commit 2f03f34877
5 changed files with 33 additions and 16 deletions
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8
Bootloader/main.c
View File

@ -1,5 +1,5 @@
/* Copyright (c) 2011,2012 Simon Schubert <2@0x2c.org>.
* Modifications by Jacob Alexander 2014-2015 <haata@kiibohd.com>
* Modifications by Jacob Alexander 2014-2016 <haata@kiibohd.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
@ -141,9 +141,15 @@ static enum dfu_status setup_write( size_t off, size_t len, void **buf )
static enum dfu_status finish_write( void *buf, size_t off, size_t len )
{
void *target;
// If nothing left to flash, this is still ok
if ( len == 0 )
return (DFU_STATUS_OK);
// If the binary is larger than the internal flash, error
if ( off + (uintptr_t)&_app_rom + len > (uintptr_t)&_app_rom_end )
return (DFU_STATUS_errADDRESS);
target = flash_get_staging_area( off + (uintptr_t)&_app_rom, USB_DFU_TRANSFER_SIZE );
if ( !target )
return (DFU_STATUS_errADDRESS);

4
Lib/mk20dx128vlf5.bootloader.ld
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@ -1,7 +1,7 @@
/* Teensyduino Core Library
* http://www.pjrc.com/teensy/
* Copyright (c) 2013 PJRC.COM, LLC.
* Modifications by Jacob Alexander 2014 for use with McHCK
* Modifications by Jacob Alexander 2014,2016 for use with McHCK
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
@ -37,7 +37,9 @@ MEMORY
}
/* Starting Address of the application ROM */
_bootloader = ORIGIN( FLASH );
_app_rom = ORIGIN( FLASH_APP );
_app_rom_end = ORIGIN( FLASH ) + LENGTH( FLASH );
FlexRAM = 0x14000000;
FTFL = 0x40020000;

6
Lib/mk20dx128vlf5.ld
View File

@ -1,7 +1,7 @@
/* Teensyduino Core Library
* http://www.pjrc.com/teensy/
* Copyright (c) 2013 PJRC.COM, LLC.
* Modifications by Jacob Alexander 2014 for use with McHCK
* Modifications by Jacob Alexander 2014,2016 for use with McHCK
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
@ -35,6 +35,10 @@ MEMORY
RAM (rwx) : ORIGIN = 0x20000000 - 16K / 2, LENGTH = 16K
}
/* Starting Address of the application ROM */
_app_rom = ORIGIN( FLASH );
_app_rom_end = ORIGIN( FLASH ) + LENGTH( FLASH );
/* Section Definitions */
SECTIONS
{

3
Lib/mk20dx256vlh7.bootloader.ld
View File

@ -1,7 +1,7 @@
/* Teensyduino Core Library
* http://www.pjrc.com/teensy/
* Copyright (c) 2013 PJRC.COM, LLC.
* Modifications by Jacob Alexander 2014-2015 for use with McHCK and Kiibohd-dfu
* Modifications by Jacob Alexander 2014-2016 for use with McHCK and Kiibohd-dfu
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
@ -39,6 +39,7 @@ MEMORY
/* Starting Address of the application ROM */
_bootloader = ORIGIN( FLASH );
_app_rom = ORIGIN( FLASH_APP );
_app_rom_end = ORIGIN( FLASH ) + LENGTH( FLASH );
FlexRAM = 0x14000000;
FTFL = 0x40020000;

6
Lib/mk20dx256vlh7.ld
View File

@ -1,7 +1,7 @@
/* Teensyduino Core Library
* http://www.pjrc.com/teensy/
* Copyright (c) 2013 PJRC.COM, LLC.
* Modifications by Jacob Alexander 2014-2015 for use with McHCK and Kiibohd-dfu
* Modifications by Jacob Alexander 2014-2016 for use with McHCK and Kiibohd-dfu
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
@ -35,6 +35,10 @@ MEMORY
RAM (rwx) : ORIGIN = 0x20000000 - 64K / 2, LENGTH = 64K
}
/* Starting Address of the application ROM */
_app_rom = ORIGIN( FLASH );
_app_rom_end = ORIGIN( FLASH ) + LENGTH( FLASH );
/* Section Definitions */
SECTIONS
{