[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 000000000000..1d033495cc75
--- /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