From: Heinrich Schuchardt xypron.glpk@gmx.de Date: Tue, 12 Jun 2018 20:00:28 +0200
On 06/12/2018 07:27 PM, Mark Kettenis wrote:
This series makes it possible to run EFI applications in non-secure mode. It allows me to run OpenBSD on the imx7d-pico-pi board while using the PSCI implementation provided by U-Boot.
Mark Kettenis (3): ARM: HYP/non-sec: save and restore stack efi_loader: ARM: run EFI payloads non-secure Revert "efi_loader: no support for ARMV7_NONSEC=y"
arch/arm/cpu/armv7/nonsec_virt.S | 6 ++++-- cmd/bootefi.c | 32 ++++++++++++++++++++++++++++++++ doc/README.uefi | 2 -- lib/efi_loader/Kconfig | 2 -- 4 files changed, 36 insertions(+), 6 deletions(-)
This is the output I got with your patches when trying to boot my BananaPi:
=> bootefi hello Scanning disk mmc@01c0f000.blk... Found 3 disks WARNING: booting without device tree ## Starting EFI application at 42000000 ... WARNING: using memory device/image path, this may confuse some payloads!
U-Boot SPL 2018.07-rc1-D001-00104-g5b859da7ca8 (Jun 12 2018 - 19:52:34 +0200) DRAM:
I could reproduce that. For some reason r3 gets clobbered and we still end up with a broken stack. Posted v2 that simply migrates SP_svc to SP_hyp. That seems to work on both imx7 and sun7i.