SPM: Move S-EL1/S-EL0 xlat tables to TZC DRAM
A new platform define, `PLAT_SP_IMAGE_XLAT_SECTION_NAME`, has been
introduced to select the section where the translation tables used by
the S-EL1/S-EL0 are placed.
This define has been used to move the translation tables to DRAM secured
by TrustZone.
Most of the extra needed space in BL31 when SPM is enabled is due to the
large size of the translation tables. By moving them to this memory
region we can save 44 KiB.
A new argument has been added to REGISTER_XLAT_CONTEXT2() to specify the
region where the translation tables have to be placed by the linker.
Change-Id: Ia81709b4227cb8c92601f0caf258f624c0467719
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/include/plat/arm/common/arm_spm_def.h b/include/plat/arm/common/arm_spm_def.h
index 83277a6..3f5c958 100644
--- a/include/plat/arm/common/arm_spm_def.h
+++ b/include/plat/arm/common/arm_spm_def.h
@@ -98,6 +98,12 @@
/* Total number of memory regions with distinct properties */
#define ARM_SP_IMAGE_NUM_MEM_REGIONS 6
+/*
+ * Name of the section to put the translation tables used by the S-EL1/S-EL0
+ * context of a Secure Partition.
+ */
+#define PLAT_SP_IMAGE_XLAT_SECTION_NAME "arm_el3_tzc_dram"
+
/* Cookies passed to the Secure Partition at boot. Not used by ARM platforms. */
#define PLAT_SPM_COOKIE_0 ULL(0)
#define PLAT_SPM_COOKIE_1 ULL(0)