diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/kmi/mem.h | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/include/kmi/mem.h b/include/kmi/mem.h index a6c6bfa..f43ee08 100644 --- a/include/kmi/mem.h +++ b/include/kmi/mem.h @@ -92,7 +92,7 @@ * @param x Physical address. * @return Corresponding virtual address. */ -#define __va(x) (void *)(((uintptr_t)(x)) + VM_DMAP - RAM_BASE) +#define __va(x) (void *)(((uintptr_t)(x)) + VM_DMAP - get_ram_base()) /** * Convert virtual address to physical address in direct mapping. @@ -100,7 +100,7 @@ * @param x Virtual address. * @return Corresponding physical address. */ -#define __pa(x) (void *)(((uintptr_t)(x)) - VM_DMAP + RAM_BASE) +#define __pa(x) (void *)(((uintptr_t)(x)) - VM_DMAP + get_ram_base()) /** * Get page number of physical address. @@ -213,6 +213,22 @@ enum mm_order nearest_order(size_t size); */ void init_mem(size_t max_order, size_t shifts[10], size_t page_shift); +/** + * Set RAM base address for global access. + * For now supports only one RAM bank. + * + * @param base RAM base address. + */ +void set_ram_base(pm_t base); + +/** + * Get RAM base address. + * Very much assumes set_ram_base() has been called beforehand. + * + * @return RAM base address. + */ +pm_t get_ram_base(); + /** Base page size. */ #define BASE_PAGE_SIZE (order_size(BASE_PAGE)) |