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authorLinus Walleij <linus.walleij@stericsson.com>2010-07-12 21:50:59 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-07-18 20:29:47 +0100
commitcb9d7707cd9be57830f31616233f6a872ca8416d (patch)
tree6b380a5fc3c0f8efcc97455ee85a08da1d6ce4f9 /arch/arm/mm/mmu.c
parentf159f4ed55bb0fa5470800641e03a13a7e0eae6e (diff)
ARM: 6222/1: add memory types for the TCMs
The earlier TCM memory regions were mapped as MT_MEMORY_UNCACHED which doesn't really work on platforms supporting the new v6 features like the NX bit. Add unique MT_MEMORY_[I|D]TCM types instead. Cc: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/mmu.c')
-rw-r--r--arch/arm/mm/mmu.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 28589417118..e53480148c0 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -258,6 +258,19 @@ static struct mem_type mem_types[] = {
.prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE,
.domain = DOMAIN_KERNEL,
},
+ [MT_MEMORY_DTCM] = {
+ .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG |
+ L_PTE_DIRTY | L_PTE_WRITE,
+ .prot_l1 = PMD_TYPE_TABLE,
+ .prot_sect = PMD_TYPE_SECT | PMD_SECT_XN,
+ .domain = DOMAIN_KERNEL,
+ },
+ [MT_MEMORY_ITCM] = {
+ .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
+ L_PTE_USER | L_PTE_EXEC,
+ .prot_l1 = PMD_TYPE_TABLE,
+ .domain = DOMAIN_IO,
+ },
};
const struct mem_type *get_mem_type(unsigned int type)