kernel: pmap: Add arch-shared pmap_init() routine

Signed-off-by: Ian Moffett <ian@osmora.org>

4 files changed, 24 insertions, 0 deletions

diff --git a/sys/arch/aarch64/aarch64/pmap.c b/sys/arch/aarch64/aarch64/pmap.c
index 7e93959..d8f298b 100644
--- a/sys/arch/aarch64/aarch64/pmap.c
+++ b/sys/arch/aarch64/aarch64/pmap.c
@@ -87,3 +87,15 @@ pmap_set_cache(struct vas vas, vaddr_t va, int type)
     /* TODO: STUB */
     return 0;
 }
+
+int
+pmap_init(void)
+{
+    uint64_t mair;
+
+    mair = MT_ATTR(MT_NORMAL, MEM_NORMAL)       |
+           MT_ATTR(MT_NORMAL_UC, MEM_NORMAL_UC) |
+           MT_ATTR(MT_DEVICE, MEM_DEV_NGNRNE);
+    mair_el1_write(mair);
+    return 0;
+}
diff --git a/sys/arch/amd64/amd64/pmap.c b/sys/arch/amd64/amd64/pmap.c
index 8193838..325ce51 100644
--- a/sys/arch/amd64/amd64/pmap.c
+++ b/sys/arch/amd64/amd64/pmap.c
@@ -344,3 +344,9 @@ pmap_mark_clean(struct vas vas, vaddr_t va)
         __invlpg(va);
     }
 }
+
+int
+pmap_init(void)
+{
+    return 0;
+}
diff --git a/sys/include/vm/pmap.h b/sys/include/vm/pmap.h
index e1f3f89..e0549d4 100644
--- a/sys/include/vm/pmap.h
+++ b/sys/include/vm/pmap.h
@@ -92,4 +92,9 @@ void pmap_mark_clean(struct vas vas, vaddr_t va);
  */
 int pmap_set_cache(struct vas vas, vaddr_t va, int type);
 
+/*
+ * Machine dependent pmap init code.
+ */
+int pmap_init(void);
+
 #endif  /* !_VM_PMAP_H_ */
diff --git a/sys/vm/vm_init.c b/sys/vm/vm_init.c
index 2846a69..7518838 100644
--- a/sys/vm/vm_init.c
+++ b/sys/vm/vm_init.c
@@ -56,6 +56,7 @@ vm_init(void)
     void *pool;
 
     vm_physmem_init();
+    pmap_init();
 
     g_kvas = pmap_read_vas();
     vm_ctx.dynalloc_pool_sz = DYNALLOC_POOL_SZ;