arch: arm: Add macro to set ap[2] access permission bit.
Change to add macro for setting AP[2] bit (access permission bits),
mmu page table descriptor for section mapping.
This is required, as LK uses single level page level translation,
which has format of section descriptor. To make a entry read only,
for all privileged levels, we need to set this bit.
Change-Id: Ifc0dd9ce948a62e7090e8cf7671abe2e6d40fc9c
diff --git a/arch/arm/include/arch/arm/mmu.h b/arch/arm/include/arch/arm/mmu.h
index 43a474e..c870329 100644
--- a/arch/arm/include/arch/arm/mmu.h
+++ b/arch/arm/include/arch/arm/mmu.h
@@ -1,7 +1,7 @@
/*
* Copyright (c) 2008 Travis Geiselbrecht
*
- * Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2015,2018 The Linux Foundation. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
@@ -49,6 +49,7 @@
#define MMU_MEMORY_AP_NO_ACCESS (0x0 << 10)
#define MMU_MEMORY_AP_READ_ONLY (0x7 << 10)
#define MMU_MEMORY_AP_READ_WRITE (0x3 << 10)
+#define MMU_MEMORY_APX_READ_ONLY (0x1 << 15)
#define MMU_MEMORY_XN (0x1 << 4)
#else /* LPAE */