Updating a memory block without status logging
View Patent ↗A technique to update a memory block without status logging is presented. An update file includes a pre-update and a post-update information verification code (IVC) for each block to be updated. By comparing the IVCs to an IVC of a block of memory, an update status may be determined.
1. An apparatus comprising:
a memory having a first portion to store a received update file, the update file including a pre-update information verification code (IVC), a post-update IVC, and difference information; and
a state machine configured to use the IVCs to determine a status of an update to a second portion of the memory, wherein to update the portion of memory, the state machine is further configured to:
calculate a current IVC of a block of memory; and
compare the current IVC with one of pre-update and post-update IVCs.
2. The apparatus as recited in claim 1 , wherein if the current IVC and the pre-update IVC are not equal and the current IVC and a post-update IVC are not equal, the block has been partially updated.
3. The apparatus as recited in claim 1 , wherein the difference information is used to update the information stored in the second portion of the memory.
4. A system comprising:
an antenna to receive an update file;
a memory having a first portion to store the update file, the update file including a pre-update information verification code (IVC), a post-update IVC, and difference information; and
a state machine configured to use the IVCs to determine a status of an update to a second portion of the memory, wherein to update the portion of memory, the state machine is further configured to:
calculate a current IVC of a block of memory; and
compare the current IVC with one of said IVCs.