From 6fca8abef7e6d7be1a9e6d93dd0f2b7fbc5b28e5 Mon Sep 17 00:00:00 2001
From: Pasha <pasha@member.fsf.org>
Date: Tue, 20 Feb 2024 18:55:36 +0000
Subject: initial risc-v example

---
 riscv/include/asm/efi.h | 50 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 riscv/include/asm/efi.h

(limited to 'riscv/include/asm/efi.h')

diff --git a/riscv/include/asm/efi.h b/riscv/include/asm/efi.h
new file mode 100644
index 0000000..46a3559
--- /dev/null
+++ b/riscv/include/asm/efi.h
@@ -0,0 +1,50 @@
+/* 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, bool);
+
+#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;
+}
+
+static inline unsigned long efi_get_kimg_min_align(void)
+{
+	/*
+	 * RISC-V requires the kernel image to placed 2 MB aligned base for 64
+	 * bit and 4MB for 32 bit.
+	 */
+	return IS_ENABLED(CONFIG_64BIT) ? SZ_2M : SZ_4M;
+}
+
+#define EFI_KIMG_PREFERRED_ADDRESS	efi_get_kimg_min_align()
+
+void arch_efi_call_virt_setup(void);
+void arch_efi_call_virt_teardown(void);
+
+unsigned long stext_offset(void);
+
+void efi_icache_sync(unsigned long start, unsigned long end);
+
+#endif /* _ASM_EFI_H */
-- 
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