[ARM] nommu: Move hardware page table definitions to pgtable-hwdef.h

Move the hardware PMD and PTE page table definitions from pgtable.h
into pgtable-hwdef.h, and include pgtable-hwdef.h as necessary.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 88 insertions, 0 deletions

diff --git a/include/asm-arm/pgtable-hwdef.h b/include/asm-arm/pgtable-hwdef.h
new file mode 100644
index 0000000..1d03349
--- /dev/null
+++ b/include/asm-arm/pgtable-hwdef.h
@@ -0,0 +1,88 @@
+/*
+ *  linux/include/asm-arm/pgtable-hwdef.h
+ *
+ *  Copyright (C) 1995-2002 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef _ASMARM_PGTABLE_HWDEF_H
+#define _ASMARM_PGTABLE_HWDEF_H
+
+/*
+ * Hardware page table definitions.
+ *
+ * + Level 1 descriptor (PMD)
+ *   - common
+ */
+#define PMD_TYPE_MASK		(3 << 0)
+#define PMD_TYPE_FAULT		(0 << 0)
+#define PMD_TYPE_TABLE		(1 << 0)
+#define PMD_TYPE_SECT		(2 << 0)
+#define PMD_BIT4		(1 << 4)
+#define PMD_DOMAIN(x)		((x) << 5)
+#define PMD_PROTECTION		(1 << 9)	/* v5 */
+/*
+ *   - section
+ */
+#define PMD_SECT_BUFFERABLE	(1 << 2)
+#define PMD_SECT_CACHEABLE	(1 << 3)
+#define PMD_SECT_AP_WRITE	(1 << 10)
+#define PMD_SECT_AP_READ	(1 << 11)
+#define PMD_SECT_TEX(x)		((x) << 12)	/* v5 */
+#define PMD_SECT_APX		(1 << 15)	/* v6 */
+#define PMD_SECT_S		(1 << 16)	/* v6 */
+#define PMD_SECT_nG		(1 << 17)	/* v6 */
+#define PMD_SECT_SUPER		(1 << 18)	/* v6 */
+
+#define PMD_SECT_UNCACHED	(0)
+#define PMD_SECT_BUFFERED	(PMD_SECT_BUFFERABLE)
+#define PMD_SECT_WT		(PMD_SECT_CACHEABLE)
+#define PMD_SECT_WB		(PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE)
+#define PMD_SECT_MINICACHE	(PMD_SECT_TEX(1) | PMD_SECT_CACHEABLE)
+#define PMD_SECT_WBWA		(PMD_SECT_TEX(1) | PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE)
+#define PMD_SECT_NONSHARED_DEV	(PMD_SECT_TEX(2))
+
+/*
+ *   - coarse table (not used)
+ */
+
+/*
+ * + Level 2 descriptor (PTE)
+ *   - common
+ */
+#define PTE_TYPE_MASK		(3 << 0)
+#define PTE_TYPE_FAULT		(0 << 0)
+#define PTE_TYPE_LARGE		(1 << 0)
+#define PTE_TYPE_SMALL		(2 << 0)
+#define PTE_TYPE_EXT		(3 << 0)	/* v5 */
+#define PTE_BUFFERABLE		(1 << 2)
+#define PTE_CACHEABLE		(1 << 3)
+
+/*
+ *   - extended small page/tiny page
+ */
+#define PTE_EXT_XN		(1 << 0)	/* v6 */
+#define PTE_EXT_AP_MASK		(3 << 4)
+#define PTE_EXT_AP0		(1 << 4)
+#define PTE_EXT_AP1		(2 << 4)
+#define PTE_EXT_AP_UNO_SRO	(0 << 4)
+#define PTE_EXT_AP_UNO_SRW	(PTE_EXT_AP0)
+#define PTE_EXT_AP_URO_SRW	(PTE_EXT_AP1)
+#define PTE_EXT_AP_URW_SRW	(PTE_EXT_AP1|PTE_EXT_AP0)
+#define PTE_EXT_TEX(x)		((x) << 6)	/* v5 */
+#define PTE_EXT_APX		(1 << 9)	/* v6 */
+#define PTE_EXT_SHARED		(1 << 10)	/* v6 */
+#define PTE_EXT_NG		(1 << 11)	/* v6 */
+
+/*
+ *   - small page
+ */
+#define PTE_SMALL_AP_MASK	(0xff << 4)
+#define PTE_SMALL_AP_UNO_SRO	(0x00 << 4)
+#define PTE_SMALL_AP_UNO_SRW	(0x55 << 4)
+#define PTE_SMALL_AP_URO_SRW	(0xaa << 4)
+#define PTE_SMALL_AP_URW_SRW	(0xff << 4)
+
+#endif