Hello, I've put a small program that blinks the LED of my Olimx H2294 board into the on-chip flash, with 0x1fc set to 0x87654321. Bootloader is version 1.63. JTAG doesn't work anymore. Here are the results you wanted: 190 A (entered G 0 A) 19tEsT A (entered G tEsT A) 191073741824 4 8 0 (entered T 1073741824 4 8 0) The reply was '19' (CODE_READ_PROTECTION_ENABLED) each time, indicating that the CRP works as promised. Regards, Dominic On Sunday 01 January 2006 15:45, jayasooriah wrote: > I do not wish to comment on what the T command is there for, except to > say it most will be surprised to know what it does, let alone that it > exists. I would like to give Philips an opportunity to respond to my > original question first. > > Meanwhile, could those interested in checking out CRP feature to do > the following and post the results: > > 1/ Enable CRP on a device (blank one will do). > > 2/ Verify CRP is enabled by Entering "G 0 A" and noting the result. > > 3/ Enter "G tEsT A" and observe what happens. > > 4/ Enter "T 1073741824 4 8 0" and observe the result code. > > I like to use these results to confirm that I have understood the boot > loader code correctly. I am not able to do these tests myself because > my board will not arrive for another couple of weeks. > > I will follow up with a reference to my documentation of boot loader > internals when this is ready, hopefully very soon. > > Many thanks. > > Jaya
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Re: [lpc2000] Re: voiding flash (CRP) security
2006-01-02 by Dominic Rath
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