Commit 7efb8300 authored by George G. Davis's avatar George G. Davis Committed by Russell King
Browse files

[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: default avatarGeorge G. Davis <gdavis@mvista.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 0367a8d3

arch/arm/mm/mm-armv.c

+6 −0
Original line number Diff line number Diff line
@@ -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

+1 −0
Original line number Diff line number Diff line
@@ -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

+1 −0
Original line number Diff line number Diff line
@@ -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)

CRA Git | Maintained and supported by SUSTech CRA and CCSE