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| author | Linus Walleij <linus.walleij@stericsson.com> | 2010-07-12 21:50:59 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-18 20:29:47 +0100 |
| commit | cb9d7707cd9be57830f31616233f6a872ca8416d (patch) | |
| tree | 6b380a5fc3c0f8efcc97455ee85a08da1d6ce4f9 /arch/arm/mm/mmu.c | |
| parent | f159f4ed55bb0fa5470800641e03a13a7e0eae6e (diff) | |
| download | op-kernel-dev-cb9d7707cd9be57830f31616233f6a872ca8416d.zip op-kernel-dev-cb9d7707cd9be57830f31616233f6a872ca8416d.tar.gz | |
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.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 2858941..e534801 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) |
