On Thursday 15 November 2012, Lee Jones wrote:

quoted

quoted

+/* for automatic boot timing testcases */
+#define ATAG_BOOTTIME  0x41000403

Where can I refer this ATAG usage? can you point out the reference URL
or patches?

I assumed this would be in Mainline u-boot, but apparently not.
On closer inspection of the internal ST-Ericsson u-boot, this
functionality appears to be provided by patches which currently
exist as delta. So in essence, the bootloader you use will have
to be patched in a similar way for you to retrieve information
surrounding bootloader boot times.

And there was me thinking it was magic. ;)

And since we're moving away from ATAG on ux500 towards DT, it won't
even work in the future. How essential is this part for the operation
of your code?

	Arnd