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secure boot

Note: This was originally posted on 5th August 2010 at http://forums.arm.com

Hallo,

I really need to know on how to write or get the secure boot code for ARM1176.
One more question is: If the secure boot code is located in internal ROM, what should I do to write the code in that location. (I have full set ARM1176 deve.board and RVDS 4.0)

** Is there any tutorial for new user like me....(boot --> secure mode --> load 2nd boot --> NSC mode --> load OS) for example..
Really really need help.Please some one guide me.

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Peter Harris over 12 years ago

Note: This was originally posted on 5th August 2010 at http://forums.arm.com

** Is there any tutorial for new user like me....(boot --> secure mode --> load 2nd boot --> NSC mode --> load OS) for example.

Some ideas about secure boot here (although only at a a very high level):

[url="http://infocenter.arm.com/help/topic/com.arm.doc.prd29-genc-009492c/CACGCHFE.html"]http://infocenter.arm.com/help/topic/com.a...c/CACGCHFE.html[/url]

For a development board you won't be able to change the ROM - hence the "read-only" part of the name - so you will have to emulate the secure boot. If you are looking to buy an off-the-shelf chip then secure boot is often an advertised feature, as it is something which much be built-in by the silicon vendor during device manufacture. As you are finding, you can't add it afterwards (unless there is some form of write-once Flash or metal fuse, but unusual for large regions suitable for code). If you are building your own chip, then part of the process will be defining your own ROM mask to use when the chip is manufactured.
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Peter Harris over 12 years ago

Note: This was originally posted on 5th August 2010 at http://forums.arm.com

** Is there any tutorial for new user like me....(boot --> secure mode --> load 2nd boot --> NSC mode --> load OS) for example.

Some ideas about secure boot here (although only at a a very high level):

[url="http://infocenter.arm.com/help/topic/com.arm.doc.prd29-genc-009492c/CACGCHFE.html"]http://infocenter.arm.com/help/topic/com.a...c/CACGCHFE.html[/url]

For a development board you won't be able to change the ROM - hence the "read-only" part of the name - so you will have to emulate the secure boot. If you are looking to buy an off-the-shelf chip then secure boot is often an advertised feature, as it is something which much be built-in by the silicon vendor during device manufacture. As you are finding, you can't add it afterwards (unless there is some form of write-once Flash or metal fuse, but unusual for large regions suitable for code). If you are building your own chip, then part of the process will be defining your own ROM mask to use when the chip is manufactured.
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