Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 98 insertions, 0 deletions

diff --git a/arch/sh/mm/nommu.c b/arch/sh/mm/nommu.c
new file mode 100644
index 000000000..8b4504413
--- /dev/null
+++ b/arch/sh/mm/nommu.c
@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * arch/sh/mm/nommu.c
+ *
+ * Various helper routines and stubs for MMUless SH.
+ *
+ * Copyright (C) 2002 - 2009 Paul Mundt
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <asm/tlbflush.h>
+#include <asm/page.h>
+#include <linux/uaccess.h>
+
+/*
+ * Nothing too terribly exciting here ..
+ */
+void copy_page(void *to, void *from)
+{
+	memcpy(to, from, PAGE_SIZE);
+}
+
+__kernel_size_t __copy_user(void *to, const void *from, __kernel_size_t n)
+{
+	memcpy(to, from, n);
+	return 0;
+}
+
+__kernel_size_t __clear_user(void *to, __kernel_size_t n)
+{
+	memset(to, 0, n);
+	return 0;
+}
+
+void local_flush_tlb_all(void)
+{
+	BUG();
+}
+
+void local_flush_tlb_mm(struct mm_struct *mm)
+{
+	BUG();
+}
+
+void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
+			    unsigned long end)
+{
+	BUG();
+}
+
+void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
+{
+	BUG();
+}
+
+void local_flush_tlb_one(unsigned long asid, unsigned long page)
+{
+	BUG();
+}
+
+void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
+{
+	BUG();
+}
+
+void __flush_tlb_global(void)
+{
+}
+
+void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
+{
+}
+
+void __init kmap_coherent_init(void)
+{
+}
+
+void *kmap_coherent(struct page *page, unsigned long addr)
+{
+	BUG();
+	return NULL;
+}
+
+void kunmap_coherent(void *kvaddr)
+{
+	BUG();
+}
+
+void __init page_table_range_init(unsigned long start, unsigned long end,
+				  pgd_t *pgd_base)
+{
+}
+
+void __set_fixmap(enum fixed_addresses idx, unsigned long phys, pgprot_t prot)
+{
+}