Introduce arm_setup_page_tables() function
This patch introduces the arm_setup_page_tables() function to
set up page tables on ARM platforms. It replaces the
arm_configure_mmu_elx() functions and does the same thing except
that it doesn't enable the MMU at the end. The idea is to reduce
the amount of per-EL code that is generated by the C preprocessor
by splitting the memory regions definitions and page tables creation
(which is generic) from the MMU enablement (which is the only per-EL
configuration).
As a consequence, the call to the enable_mmu_elx() function has been
moved up into the plat_arch_setup() hook. Any other ARM standard
platforms that use the functions `arm_configure_mmu_elx()` must be
updated.
Change-Id: I6f12a20ce4e5187b3849a8574aac841a136de83d
diff --git a/plat/arm/common/arm_bl31_setup.c b/plat/arm/common/arm_bl31_setup.c
index 8eb6818..9cfa3b8 100644
--- a/plat/arm/common/arm_bl31_setup.c
+++ b/plat/arm/common/arm_bl31_setup.c
@@ -246,12 +246,14 @@
}
/*******************************************************************************
- * Perform the very early platform specific architectural setup here. At the
- * moment this is only intializes the mmu in a quick and dirty way.
+ * Perform the very early platform specific architectural setup shared between
+ * ARM standard platforms. This only does basic initialization. Later
+ * architectural setup (bl31_arch_setup()) does not do anything platform
+ * specific.
******************************************************************************/
void arm_bl31_plat_arch_setup(void)
{
- arm_configure_mmu_el3(BL31_RO_BASE,
+ arm_setup_page_tables(BL31_RO_BASE,
(BL31_END - BL31_RO_BASE),
BL31_RO_BASE,
BL31_RO_LIMIT
@@ -260,6 +262,7 @@
BL31_COHERENT_RAM_LIMIT
#endif
);
+ enable_mmu_el3(0);
}
void bl31_plat_arch_setup(void)