3 files changed, 13 insertions, 22 deletions
diff --git a/src/arch/arm/include/arch/memlayout.h b/src/arch/arm/include/arch/memlayout.h
index 9f5b38316..2c733946a 100644
--- a/src/arch/arm/include/arch/memlayout.h
+++ b/src/arch/arm/include/arch/memlayout.h
@@ -27,6 +27,11 @@
 	_ = ASSERT(size >= 16K + IS_ENABLED(CONFIG_ARM_LPAE) * 32, \
 		"TTB must be 16K (+ 32 for LPAE)!");
 
+#define TTB_SUBTABLES(addr, size) \
+	REGION(ttb_subtables, addr, size, IS_ENABLED(CONFIG_ARM_LPAE)*3K + 1K) \
+	_ = ASSERT(size % (1K + 3K * IS_ENABLED(CONFIG_ARM_LPAE)) == 0, \
+		"TTB subtable region must be evenly divisible by table size!");
+
 /* ARM stacks need 8-byte alignment and stay in one place through ramstage. */
 #define STACK(addr, size) REGION(stack, addr, size, 8)
 
diff --git a/src/arch/arm/include/armv4/arch/cache.h b/src/arch/arm/include/armv4/arch/cache.h
index e41ff9a49..65f59662a 100644
--- a/src/arch/arm/include/armv4/arch/cache.h
+++ b/src/arch/arm/include/armv4/arch/cache.h
@@ -72,23 +72,4 @@ void cache_sync_instructions(void);
 /* tlb invalidate all */
 void tlb_invalidate_all(void);
 
-/*
- * Generalized setup/init functions
- */
-
-/* mmu initialization (set page table address, set permissions, etc) */
-void mmu_init(void);
-
-enum dcache_policy {
-	DCACHE_OFF,
-	DCACHE_WRITEBACK,
-	DCACHE_WRITETHROUGH,
-};
-
-/* disable the mmu for a range. Primarily useful to lock out address 0. */
-void mmu_disable_range(unsigned long start_mb, unsigned long size_mb);
-/* mmu range configuration (set dcache policy) */
-void mmu_config_range(unsigned long start_mb, unsigned long size_mb,
-						enum dcache_policy policy);
-
 #endif /* ARM_CACHE_H */
diff --git a/src/arch/arm/include/armv7/arch/cache.h b/src/arch/arm/include/armv7/arch/cache.h
index dde2c08c1..f23dec1bb 100644
--- a/src/arch/arm/include/armv7/arch/cache.h
+++ b/src/arch/arm/include/armv7/arch/cache.h
@@ -345,9 +345,14 @@ enum dcache_policy {
 };
 
 /* disable the mmu for a range. Primarily useful to lock out address 0. */
-void mmu_disable_range(unsigned long start_mb, unsigned long size_mb);
+void mmu_disable_range(u32 start_mb, u32 size_mb);
 /* mmu range configuration (set dcache policy) */
-void mmu_config_range(unsigned long start_mb, unsigned long size_mb,
-						enum dcache_policy policy);
+void mmu_config_range(u32 start_mb, u32 size_mb, enum dcache_policy policy);
+
+/* Reconfigure memory mappings at the fine-grained (4K) page level. Must be
+ * called on a range contained within a single, already mapped block/superpage.
+ * Careful: Do NOT map over this address range with mmu_config_range() again
+ * later, or you will leak resources and may desync your TLB! */
+void mmu_config_range_kb(u32 start_kb, u32 size_kb, enum dcache_policy policy);
 
 #endif /* ARM_CACHE_H */