We moved the EL2 switch to be function call based rather than implicit.
This patch changes the EL3 -> EL2 switch to the new way of doing things.
I've tested and verified this patch on LS2085ARDB.
Signed-off-by: Alexander Graf <ag...@suse.de>
---
York, feel free to squash this in with the EL2 switch.
---
cmd/bootefi.c | 23 ++++++++++++++++++++---
1 file changed, 20 insertions(+), 3 deletions(-)
diff --git a/cmd/bootefi.c b/cmd/bootefi.c
index ca41170..97a0fc9 100644
--- a/cmd/bootefi.c
+++ b/cmd/bootefi.c
@@ -141,6 +141,18 @@ static void *copy_fdt(void *fdt)
return new_fdt;
}
+#ifdef CONFIG_ARM64
+static unsigned long efi_run_in_el2(ulong (*entry)(void *image_handle,
+ struct efi_system_table *st), void *image_handle,
+ struct efi_system_table *st)
+{
+ /* Enable caches again */
+ dcache_enable();
+
+ return entry(image_handle, st);
+}
+#endif
+
/*
* Load an EFI payload into a newly allocated piece of memory, register all
* EFI objects it would want to access and jump to it.
@@ -231,9 +243,14 @@ static unsigned long do_bootefi_exec(void *efi, void *fdt)
if (current_el() == 3) {
smp_kick_all_cpus();
dcache_disable(); /* flush cache before switch to EL2 */
- armv8_switch_to_el2();
- /* Enable caches again */
- dcache_enable();
+
+ /* Move into EL2 and keep running there */
+ armv8_switch_to_el2((ulong)entry, (ulong)&loaded_image_info,
+ (ulong)&systab, (ulong)efi_run_in_el2,
+ ES_TO_AARCH64);
+
+ /* Should never reach here, efi exits with longjmp */
+ while (1) { }
}
#endif
--
1.8.5.6
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