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- Fixed bug where the checksum was incorrectly programmed during a programming sequence that doesn't include data for the bootblock. 

git-svn-id: https://svn.code.sf.net/p/openblt/code/trunk@21 5dc33758-31d5-4daf-9ae8-b24bf3d40d73
This commit is contained in:
Frank Voorburg 2012-01-19 13:21:10 +00:00
parent abe5a26e27
commit 33e35e1c22
3 changed files with 27 additions and 30 deletions
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19
Target/Source/ARM7_LPC2000/Crossworks/flash.c
View File

@ -297,6 +297,15 @@ blt_bool FlashWriteChecksum(void)
* signature_checksum = Two's complement of (SUM(exception address values))
*/
/* first check that the bootblock contains valid data. if not, this means the
* bootblock is not part of the reprogramming this time and therefore no
* new checksum needs to be written
*/
if (bootBlockInfo.base_addr == FLASH_INVALID_ADDRESS)
{
return BLT_TRUE;
}
/* compute the checksum. note that the user program's vectors are not yet written
* to flash but are present in the bootblock data structure at this point.
*/
@ -310,16 +319,6 @@ blt_bool FlashWriteChecksum(void)
signature_checksum = ~signature_checksum; /* one's complement */
signature_checksum += 1; /* two's complement */
/* check that this value of the checksum is not already present, which means
* the program area with the vector table was not programmed, so the checksum
* also doesn't need to be written. this check is important because it allows
* for additional data to be programmed, such as calibration parameters, in
* which case the checksum doesn't not need to be rewritten
*/
if (signature_checksum == FlashVerifyChecksum())
{
return BLT_TRUE;
}
/* write the checksum */
return FlashWrite(flashLayout[0].sector_start+0x14, sizeof(blt_addr),
(blt_int8u*)&signature_checksum);

19
Target/Source/ARM7_LPC2000/GCC/flash.c
View File

@ -297,6 +297,15 @@ blt_bool FlashWriteChecksum(void)
* signature_checksum = Two's complement of (SUM(exception address values))
*/
/* first check that the bootblock contains valid data. if not, this means the
* bootblock is not part of the reprogramming this time and therefore no
* new checksum needs to be written
*/
if (bootBlockInfo.base_addr == FLASH_INVALID_ADDRESS)
{
return BLT_TRUE;
}
/* compute the checksum. note that the user program's vectors are not yet written
* to flash but are present in the bootblock data structure at this point.
*/
@ -310,16 +319,6 @@ blt_bool FlashWriteChecksum(void)
signature_checksum = ~signature_checksum; /* one's complement */
signature_checksum += 1; /* two's complement */
/* check that this value of the checksum is not already present, which means
* the program area with the vector table was not programmed, so the checksum
* also doesn't need to be written. this check is important because it allows
* for additional data to be programmed, such as calibration parameters, in
* which case the checksum doesn't not need to be rewritten
*/
if (signature_checksum == FlashVerifyChecksum())
{
return BLT_TRUE;
}
/* write the checksum */
return FlashWrite(flashLayout[0].sector_start+0x14, sizeof(blt_addr),
(blt_int8u*)&signature_checksum);

19
Target/Source/ARMCM3_STM32/flash.c
View File

@ -317,6 +317,15 @@ blt_bool FlashWriteChecksum(void)
* checksum.
*/
/* first check that the bootblock contains valid data. if not, this means the
* bootblock is not part of the reprogramming this time and therefore no
* new checksum needs to be written
*/
if (bootBlockInfo.base_addr == FLASH_INVALID_ADDRESS)
{
return BLT_TRUE;
}
/* compute the checksum. note that the user program's vectors are not yet written
* to flash but are present in the bootblock data structure at this point.
*/
@ -330,16 +339,6 @@ blt_bool FlashWriteChecksum(void)
signature_checksum = ~signature_checksum; /* one's complement */
signature_checksum += 1; /* two's complement */
/* check that this value of the checksum is not already present, which means
* the program area with the vector table was not programmed, so the checksum
* also doesn't need to be written. this check is important because it allows
* for additional data to be programmed, such as calibration parameters, in
* which case the checksum doesn't not need to be rewritten
*/
if (signature_checksum == FlashVerifyChecksum())
{
return BLT_TRUE;
}
/* write the checksum */
return FlashWrite(flashLayout[0].sector_start+FLASH_VECTOR_TABLE_CS_OFFSET,
sizeof(blt_addr), (blt_int8u*)&signature_checksum);