summaryrefslogtreecommitdiffstats
path: root/arch/riscv/include/asm/efi.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/riscv/include/asm/efi.h')
-rw-r--r--arch/riscv/include/asm/efi.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/efi.h b/arch/riscv/include/asm/efi.h
new file mode 100644
index 000000000..e229d7be4
--- /dev/null
+++ b/arch/riscv/include/asm/efi.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020 Western Digital Corporation or its affiliates.
+ */
+#ifndef _ASM_EFI_H
+#define _ASM_EFI_H
+
+#include <asm/csr.h>
+#include <asm/io.h>
+#include <asm/mmu_context.h>
+#include <asm/ptrace.h>
+#include <asm/tlbflush.h>
+#include <asm/pgalloc.h>
+
+#ifdef CONFIG_EFI
+extern void efi_init(void);
+#else
+#define efi_init()
+#endif
+
+int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md);
+int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md);
+
+#define arch_efi_call_virt_setup() ({ \
+ sync_kernel_mappings(efi_mm.pgd); \
+ efi_virtmap_load(); \
+ })
+#define arch_efi_call_virt_teardown() efi_virtmap_unload()
+
+#define ARCH_EFI_IRQ_FLAGS_MASK (SR_IE | SR_SPIE)
+
+/* Load initrd anywhere in system RAM */
+static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr)
+{
+ return ULONG_MAX;
+}
+
+#define alloc_screen_info(x...) (&screen_info)
+
+static inline void free_screen_info(struct screen_info *si)
+{
+}
+
+void efi_virtmap_load(void);
+void efi_virtmap_unload(void);
+
+#endif /* _ASM_EFI_H */