#ifndef _ASM_EFI_H
#define _ASM_EFI_H
+#include <asm/cpufeature.h>
#include <asm/io.h>
+#include <asm/mmu_context.h>
#include <asm/neon.h>
+#include <asm/tlbflush.h>
#ifdef CONFIG_EFI
extern void efi_init(void);
#define efi_init()
#endif
+int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md);
+
#define efi_call_virt(f, ...) \
({ \
efi_##f##_t *__f; \
* Services are enabled and the EFI_RUNTIME_SERVICES bit set.
*/
+static inline void efi_set_pgd(struct mm_struct *mm)
+{
+ __switch_mm(mm);
+
+ if (system_uses_ttbr0_pan()) {
+ if (mm != current->active_mm) {
+ /*
+ * Update the current thread's saved ttbr0 since it is
+ * restored as part of a return from exception. Set
+ * the hardware TTBR0_EL1 using cpu_switch_mm()
+ * directly to enable potential errata workarounds.
+ */
+ update_saved_ttbr0(current, mm);
+ cpu_switch_mm(mm->pgd, mm);
+ } else {
+ /*
+ * Defer the switch to the current thread's TTBR0_EL1
+ * until uaccess_enable(). Restore the current
+ * thread's saved ttbr0 corresponding to its active_mm
+ * (if different from init_mm).
+ */
+ cpu_set_reserved_ttbr0();
+ if (current->active_mm != &init_mm)
+ update_saved_ttbr0(current, current->active_mm);
+ }
+ }
+}
+
void efi_virtmap_load(void);
void efi_virtmap_unload(void);