diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/io.h | 6 | ||||
| -rw-r--r-- | arch/arm/mm/mmu.c | 14 |
2 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h index c980156f326..01b23d5352d 100644 --- a/arch/arm/include/asm/io.h +++ b/arch/arm/include/asm/io.h @@ -62,6 +62,12 @@ extern void __raw_readsl(const void __iomem *addr, void *data, int longlen); #define MT_DEVICE_CACHED 2 #define MT_DEVICE_WC 3 /* + * NOTE : U8500 v1.0/ED cut specific hack. + * look at the commit message for more details + */ +#define MT_BACKUP_RAM 4 + +/* * types 4 onwards can be found in asm/mach/map.h and are undefined * for ioremap */ diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 241c24a1c18..65fa8efbc44 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -257,6 +257,20 @@ static struct mem_type mem_types[] = { .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE, .domain = DOMAIN_KERNEL, }, + /* NOTE : this is only a temporary hack!!! + * The U8500 ED/V1.0 cuts require such a + * memory type for deep sleep resume. + * This is expected to be solved in cut v2.0 + * and we clean this up then. for more details + * look @ the commit message please + */ + [MT_BACKUP_RAM] = { + .prot_pte = PROT_PTE_DEVICE | L_PTE_MT_DEV_SHARED | + L_PTE_SHARED | L_PTE_EXEC, + .prot_l1 = PMD_TYPE_TABLE, + .prot_sect = PROT_SECT_DEVICE | PMD_SECT_S, + .domain = DOMAIN_IO, + }, }; const struct mem_type *get_mem_type(unsigned int type) |