efi_loader: make EFI_HAVE_RUNTIME_RESET a user-selectable option

Expose EFI_HAVE_RUNTIME_RESET as a proper Kconfig boolean with a prompt
so platforms can explicitly enable or disable advertising the EFI reset
runtime service.

The current PSCI-based EFI runtime reset implementation is always
enabled whenever CONFIG_PSCI_RESET is selected, but it does not support
passing the additional arguments required for specialized reset modes.
As a result, reboot requests such as bootloader mode or EDL mode cannot
be propagated correctly and instead fall back to a normal reboot.

By making EFI_HAVE_RUNTIME_RESET user-configurable, platforms that
depend on extended PSCI reset can now explicitly disable EFI runtime
reset handling even when CONFIG_PSCI_RESET is enabled, ensuring
that the kernel retains full control of advanced reboot paths.

Default behavior for existing platforms remains unchanged.

Signed-off-by: Aswin Murugan <aswin.murugan@oss.qualcomm.com>
Reviewed-by: Sumit Garg <sumit.garg@oss.qualcomm.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Link: https://patch.msgid.link/20260324175913.92858-2-aswinm@qti.qualcomm.com
Signed-off-by: Casey Connolly <casey.connolly@linaro.org>

diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index bae98e07d2382b903e116414cd062fa6d1cdb38b..48c62999787ff5871c82649a10d911c71ee7e0cf 100644 (file)
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -102,8 +102,7 @@ config EFI_SET_TIME
          can be used by an EFI application to adjust the real time clock.
 
 config EFI_HAVE_RUNTIME_RESET
-       # bool "Reset runtime service is available"
-       bool
+       bool "Reset runtime service"
        default y
        depends on ARCH_BCM283X || FSL_LAYERSCAPE || PSCI_RESET || \
                   SANDBOX || SYSRESET_SBI || SYSRESET_X86