efi_loader: remove efi_exit_caches()
Since GRUB patch d0c070179d4d ("arm/efi: Switch to arm64 linux loader",
2018-07-09) we do not need a workaround for GRUB on 32bit ARM anymore.
So let's eliminate function efi_exit_caches().
This will require Linux distributions to update grub-efi-arm to the GRUB
git HEAD (a tag containing the aforementioned GRUB patch is not available
yet).
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index b4de996..8e0e2f7 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -26,14 +26,6 @@
/* List of all events */
LIST_HEAD(efi_events);
-/*
- * If we're running on nasty systems (32bit ARM booting into non-EFI Linux)
- * we need to do trickery with caches. Since we don't want to break the EFI
- * aware boot path, only apply hacks when loading exiting directly (breaking
- * direct Linux EFI booting along the way - oh well).
- */
-static bool efi_is_direct_boot = true;
-
#ifdef CONFIG_ARM
/*
* The "gd" pointer lives in a register on ARM and AArch64 that we declare
@@ -1684,8 +1676,6 @@
EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data);
entry = info->reserved;
- efi_is_direct_boot = false;
-
/* call the image! */
if (setjmp(&info->exit_jmp)) {
/*
@@ -1800,21 +1790,6 @@
}
/**
- * efi_exit_caches() - fix up caches for EFI payloads if necessary
- */
-static void efi_exit_caches(void)
-{
-#if defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
- /*
- * Grub on 32bit ARM needs to have caches disabled before jumping into
- * a zImage, but does not know of all cache layers. Give it a hand.
- */
- if (efi_is_direct_boot)
- cleanup_before_linux();
-#endif
-}
-
-/**
* efi_exit_boot_services() - stop all boot services
* @image_handle: handle of the loaded image
* @map_key: key of the memory map
@@ -1867,9 +1842,6 @@
board_quiesce_devices();
- /* Fix up caches for EFI payloads if necessary */
- efi_exit_caches();
-
/* This stops all lingering devices */
bootm_disable_interrupts();