[U-Boot] [PATCH v2 0/2] efi_loader: Patch RTS at ExitBootServices

[Heinrich Schuchardt]

On 1/28/19 4:42 PM, Alexander Graf wrote:
> While discussing something compeltely different, Ard pointed out
> that it might be legal to omit calling SetVirtualAddressMap altogether.
> 
> While that sounds great, we currently rely on that call to remove
> all function pointers to code that we do not support outside of
> boot services.
> 
> So let's patch out those bits already on the call to ExitBootServices,
> so that we can successfully run even when an OS chooses to omit
> any call to SetVirtualAddressMap.

This patch series is related to a parallel patch in Linux:

efi: arm/arm64: allow SetVirtualAddressMap() to be omitted
https://www.spinics.net/lists/linux-efi/msg15457.html

Please, mention it in the next version of the patch series.

The Python test_efi_selftest() has to be adjusted:
23     m = u_boot_console.p.expect(['resetting', 'U-Boot'])

Please, add the missing patch to the series.

Best regards

Heinrich

> 
> ---
> 
> v1 -> v2:
> 
>   - Add missing icache invalidation
>   - New patch: x86: Add efi runtime reset
> 
> Alexander Graf (2):
>   x86: Add efi runtime reset
>   efi_loader: Patch non-runtime code out at ExitBootServices already
> 
>  drivers/sysreset/sysreset_x86.c | 23 +++++++++++++++++++++++
>  include/efi_loader.h            |  2 ++
>  lib/efi_loader/efi_boottime.c   |  1 +
>  lib/efi_loader/efi_runtime.c    | 29 ++++++++++++++++++++---------
>  4 files changed, 46 insertions(+), 9 deletions(-)
>