1 files changed, 91 insertions, 0 deletions
diff --git a/arch/arm/include/asm/pgtable-nommu.h b/arch/arm/include/asm/pgtable-nommu.h
new file mode 100644
index 000000000..090011394
--- /dev/null
+++ b/arch/arm/include/asm/pgtable-nommu.h
@@ -0,0 +1,91 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ *  arch/arm/include/asm/pgtable-nommu.h
+ *
+ *  Copyright (C) 1995-2002 Russell King
+ *  Copyright (C) 2004  Hyok S. Choi
+ */
+#ifndef _ASMARM_PGTABLE_NOMMU_H
+#define _ASMARM_PGTABLE_NOMMU_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/slab.h>
+#include <asm/processor.h>
+#include <asm/page.h>
+
+/*
+ * Trivial page table functions.
+ */
+#define pgd_present(pgd)	(1)
+#define pgd_none(pgd)		(0)
+#define pgd_bad(pgd)		(0)
+#define pgd_clear(pgdp)
+#define kern_addr_valid(addr)	(1)
+/* FIXME */
+/*
+ * PMD_SHIFT determines the size of the area a second-level page table can map
+ * PGDIR_SHIFT determines what a third-level page table entry can map
+ */
+#define PGDIR_SHIFT		21
+
+#define PGDIR_SIZE		(1UL << PGDIR_SHIFT)
+#define PGDIR_MASK		(~(PGDIR_SIZE-1))
+/* FIXME */
+
+#define PAGE_NONE	__pgprot(0)
+#define PAGE_SHARED	__pgprot(0)
+#define PAGE_COPY	__pgprot(0)
+#define PAGE_READONLY	__pgprot(0)
+#define PAGE_KERNEL	__pgprot(0)
+
+#define swapper_pg_dir ((pgd_t *) 0)
+
+
+typedef pte_t *pte_addr_t;
+
+/*
+ * Mark the prot value as uncacheable and unbufferable.
+ */
+#define pgprot_noncached(prot)	(prot)
+#define pgprot_writecombine(prot) (prot)
+#define pgprot_device(prot)	(prot)
+
+
+/*
+ * These would be in other places but having them here reduces the diffs.
+ */
+extern unsigned int kobjsize(const void *objp);
+
+/*
+ * All 32bit addresses are effectively valid for vmalloc...
+ * Sort of meaningless for non-VM targets.
+ */
+#define	VMALLOC_START	0UL
+#define	VMALLOC_END	0xffffffffUL
+
+#define FIRST_USER_ADDRESS      0UL
+
+#else 
+
+/*
+ * dummy tlb and user structures.
+ */
+#define v3_tlb_fns	(0)
+#define v4_tlb_fns	(0)
+#define v4wb_tlb_fns	(0)
+#define v4wbi_tlb_fns	(0)
+#define v6wbi_tlb_fns	(0)
+#define v7wbi_tlb_fns	(0)
+
+#define v3_user_fns	(0)
+#define v4_user_fns	(0)
+#define v4_mc_user_fns	(0)
+#define v4wb_user_fns	(0)
+#define v4wt_user_fns	(0)
+#define v6_user_fns	(0)
+#define xscale_mc_user_fns (0)
+
+#endif /*__ASSEMBLY__*/
+
+#endif /* _ASMARM_PGTABLE_H */