ARM platforms: Demonstrate mem_protect from el3_runtime
Previously mem_protect used to be only supported from BL2. This is not
helpful in the case when ARM TF-A BL2 is not used. This patch demonstrates
mem_protect from el3_runtime firmware on ARM Platforms specifically
when RESET_TO_BL31 or RESET_TO_SP_MIN flag is set as BL2 may be absent
in these cases. The Non secure DRAM is dynamically mapped into EL3 mmap
tables temporarily and then the protected regions are then cleared. This
avoids the need to map the non secure DRAM permanently to BL31/sp_min.
The stack size is also increased, because DYNAMIC_XLAT_TABLES require
a bigger stack.
Change-Id: Ia44c594192ed5c5adc596c0cff2c7cc18c001fde
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>
diff --git a/include/plat/arm/common/plat_arm.h b/include/plat/arm/common/plat_arm.h
index f79450c..612a63a 100644
--- a/include/plat/arm/common/plat_arm.h
+++ b/include/plat/arm/common/plat_arm.h
@@ -166,7 +166,8 @@
void arm_program_trusted_mailbox(uintptr_t address);
int arm_psci_read_mem_protect(int *enabled);
int arm_nor_psci_write_mem_protect(int val);
-void arm_nor_psci_do_mem_protect(void);
+void arm_nor_psci_do_static_mem_protect(void);
+void arm_nor_psci_do_dyn_mem_protect(void);
int arm_psci_mem_protect_chk(uintptr_t base, u_register_t length);
/* Topology utility function */