Hello Suriyan,
Suriyan Ramasami suriyan.r@gmail.com writes:
Hello Sjoerd Simons, A signed BL2 which allows unsigned BL2 chain load is already available for experimentation. Refer this link: http://forum.odroid.com/viewtopic.php?f=98&t=6147#p58984 The suriyan.bl2-hkxu3.1212.5422.zip blob contains a signed BL2 which allows the same. The layout of SD card is as follows:
BL1 (1 to 30) 15K BL2 (31 to 62) 16K indicator block (63 to 64) 1K uboot (65 to 2112) 1M tzsw (2113 to 2624) 256K unsigned BL2 (2625 to 2656) 16K
A non zero in the first byte of the indicator block instructs the signed BL2 to load the unsigned BL2 @ offset 2625.
I'm currently running mainline u-boot, and hoping to test the series that powers down secondary cores on the odroid-xu3. That series applies and builds with mainline u-boot (v2015.01-rc3), but for it to work correctly, IIUC, I'll also need to build an SPL from mainline.
Can you share your changes to mainline u-boot that enable the building of SPL?
I'd like to try that using your BL2 that will load an unsigned BL2.
Thanks,
Kevin