The bootwrapper is really doubling as firmware, so it doesn't make sense for it to drop out of the Secure World before getting a chance to parse its parameters and configuration.
Instead, it should make sense to delay switching to the Normal World for as long as possible so that we have a chance to do any required firmware-level configuration in the Secure World first. This quick hack is ***completely untested***, since I'm not working with any suitable kernel tree right now. If someone with a KVM tree ready to run could give it a try, that would definitely save me some time. Review also welcome (naturally) Changes since v1: * Don't rely on preservation of lr or sp across enter_hyp (this doesn't work because those registers are banked per-mode). I'm still not convinced this series works, due image/model/dtb mismatches in my testing, but execution at least reaches the kernel now. Cheers ---Dave Dave Martin (3): bootwrapper: Fix misaligned Hyp mode vector table bootwrapper: Refactor entry into Hyp mode to be more reusable bootwrapper: Delay switch to Hyp mode until kernel entry boot.S | 58 +++++++++++++++++++++++++++++++++++++------------------- semi_loader.h | 6 +++- 2 files changed, 42 insertions(+), 22 deletions(-) -- 1.7.4.1 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Dave Martin (3): bootwrapper: Fix misaligned Hyp mode vector table bootwrapper: Refactor entry into Hyp mode to be more reusable bootwrapper: Delay switch to Hyp mode until kernel entry boot.S | 58 +++++++++++++++++++++++++++++++++++++------------------- semi_loader.h | 6 +++- 2 files changed, 42 insertions(+), 22 deletions(-) -- 1.7.4.1 _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
