[ARM] 3269/1: Add ARMv6 MT_NONSHARED_DEVICE mem_types[] index

Patch from George G. Davis

This Freescale Semiconductor, Inc. contributed patch adds mem_types[]
support for ARMv6 non-shared device memory region attributes. This
implementation provides support for only first level section mapped
non-shared devices. Second level non-shared device mappings are not
yet supported.

Signed-off-by: George G. Davis <gdavis@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/mm-armv.c

@@ -343,6 +343,12 @@ static struct mem_types mem_types[] __initdata = {
 				PMD_SECT_AP_WRITE | PMD_SECT_BUFFERABLE |
 				PMD_SECT_TEX(1),
 		.domain    = DOMAIN_IO,
+	},
+	[MT_NONSHARED_DEVICE] = {
+		.prot_l1   = PMD_TYPE_TABLE,
+		.prot_sect = PMD_TYPE_SECT | PMD_SECT_NONSHARED_DEV |
+				PMD_SECT_AP_WRITE,
+		.domain    = DOMAIN_IO,
 	}
 };
 

include/asm-arm/mach/map.h

@@ -26,6 +26,7 @@ struct meminfo;
 #define MT_MEMORY		5
 #define MT_ROM			6
 #define MT_IXP2000_DEVICE	7
+#define MT_NONSHARED_DEVICE	8
 
 extern void create_memmap_holes(struct meminfo *);
 extern void memtable_init(struct meminfo *);

include/asm-arm/pgtable.h

@@ -168,6 +168,7 @@ extern void __pgd_error(const char *file, int line, unsigned long val);
 #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)