diff --git a/include/lib/aarch32/arch.h b/include/lib/aarch32/arch.h
index 9b46601..14b1080 100644
--- a/include/lib/aarch32/arch.h
+++ b/include/lib/aarch32/arch.h
@@ -114,6 +114,8 @@
 #define ID_PFR1_VIRTEXT_MASK	U(0xf)
 #define GET_VIRT_EXT(id)	(((id) >> ID_PFR1_VIRTEXT_SHIFT) \
 				 & ID_PFR1_VIRTEXT_MASK)
+#define ID_PFR1_GENTIMER_SHIFT	U(16)
+#define ID_PFR1_GENTIMER_MASK	U(0xf)
 #define ID_PFR1_GIC_SHIFT	U(28)
 #define ID_PFR1_GIC_MASK	U(0xf)
 
diff --git a/include/lib/aarch32/arch_features.h b/include/lib/aarch32/arch_features.h
index d934102..ddf0968 100644
--- a/include/lib/aarch32/arch_features.h
+++ b/include/lib/aarch32/arch_features.h
@@ -11,6 +11,12 @@
 
 #include <arch_helpers.h>
 
+static inline bool is_armv7_gentimer_present(void)
+{
+	return ((read_id_pfr1() >> ID_PFR1_GENTIMER_SHIFT) &
+		ID_PFR1_GENTIMER_MASK) != 0U;
+}
+
 static inline bool is_armv8_2_ttcnp_present(void)
 {
 	return ((read_id_mmfr4() >> ID_MMFR4_CNP_SHIFT) &
diff --git a/include/lib/aarch64/arch.h b/include/lib/aarch64/arch.h
index 07661c9..39b2a42 100644
--- a/include/lib/aarch64/arch.h
+++ b/include/lib/aarch64/arch.h
@@ -204,6 +204,10 @@
 
 /* ID_AA64MMFR2_EL1 definitions */
 #define ID_AA64MMFR2_EL1		S3_0_C0_C7_2
+
+#define ID_AA64MMFR2_EL1_ST_SHIFT	U(28)
+#define ID_AA64MMFR2_EL1_ST_MASK	ULL(0xf)
+
 #define ID_AA64MMFR2_EL1_CNP_SHIFT	U(0)
 #define ID_AA64MMFR2_EL1_CNP_MASK	ULL(0xf)
 
@@ -427,6 +431,7 @@
 
 #define TCR_TxSZ_MIN		ULL(16)
 #define TCR_TxSZ_MAX		ULL(39)
+#define TCR_TxSZ_MAX_TTST	ULL(48)
 
 /* (internal) physical address size bits in EL3/EL1 */
 #define TCR_PS_BITS_4GB		ULL(0x0)
diff --git a/include/lib/aarch64/arch_features.h b/include/lib/aarch64/arch_features.h
index 2b09ba0..da8b6e4 100644
--- a/include/lib/aarch64/arch_features.h
+++ b/include/lib/aarch64/arch_features.h
@@ -11,10 +11,22 @@
 
 #include <arch_helpers.h>
 
+static inline bool is_armv7_gentimer_present(void)
+{
+	/* The Generic Timer is always present in an ARMv8-A implementation */
+	return true;
+}
+
 static inline bool is_armv8_2_ttcnp_present(void)
 {
 	return ((read_id_aa64mmfr2_el1() >> ID_AA64MMFR2_EL1_CNP_SHIFT) &
 		ID_AA64MMFR2_EL1_CNP_MASK) != 0U;
 }
 
+static inline bool is_armv8_4_ttst_present(void)
+{
+	return ((read_id_aa64mmfr2_el1() >> ID_AA64MMFR2_EL1_ST_SHIFT) &
+		ID_AA64MMFR2_EL1_ST_MASK) == 1U;
+}
+
 #endif /* ARCH_FEATURES_H */
diff --git a/include/lib/aarch64/arch_helpers.h b/include/lib/aarch64/arch_helpers.h
index d98ce48..750bbbd 100644
--- a/include/lib/aarch64/arch_helpers.h
+++ b/include/lib/aarch64/arch_helpers.h
@@ -182,6 +182,7 @@
 DEFINE_SYSREG_READ_FUNC(id_aa64isar1_el1)
 DEFINE_SYSREG_READ_FUNC(id_aa64pfr0_el1)
 DEFINE_SYSREG_READ_FUNC(id_aa64dfr0_el1)
+DEFINE_SYSREG_READ_FUNC(id_afr0_el1)
 DEFINE_SYSREG_READ_FUNC(CurrentEl)
 DEFINE_SYSREG_READ_FUNC(ctr_el0)
 DEFINE_SYSREG_RW_FUNCS(daif)
diff --git a/include/lib/xlat_tables/aarch32/xlat_tables_aarch32.h b/include/lib/xlat_tables/aarch32/xlat_tables_aarch32.h
index 37f3b53..4afd1c8 100644
--- a/include/lib/xlat_tables/aarch32/xlat_tables_aarch32.h
+++ b/include/lib/xlat_tables/aarch32/xlat_tables_aarch32.h
@@ -63,8 +63,7 @@
  * is 1.
  *
  * Note that this macro assumes that the given virtual address space size is
- * valid. Therefore, the caller is expected to check it is the case using the
- * CHECK_VIRT_ADDR_SPACE_SIZE() macro first.
+ * valid.
  */
 #define GET_XLAT_TABLE_LEVEL_BASE(_virt_addr_space_sz)			\
 	(((_virt_addr_space_sz) > (ULL(1) << L1_XLAT_ADDRESS_SHIFT)) ?	\
diff --git a/include/lib/xlat_tables/aarch64/xlat_tables_aarch64.h b/include/lib/xlat_tables/aarch64/xlat_tables_aarch64.h
index 91ca8e4..8c29d00 100644
--- a/include/lib/xlat_tables/aarch64/xlat_tables_aarch64.h
+++ b/include/lib/xlat_tables/aarch64/xlat_tables_aarch64.h
@@ -43,14 +43,22 @@
  * state.
  *
  * TCR.TxSZ is calculated as 64 minus the width of said address space.
- * The value of TCR.TxSZ must be in the range 16 to 39 [1], which means that
- * the virtual address space width must be in the range 48 to 25 bits.
+ * The value of TCR.TxSZ must be in the range 16 to 39 [1] or 48 [2],
+ * depending on Small Translation Table Support which means that
+ * the virtual address space width must be in the range 48 to 25 or 16 bits.
  *
  * [1] See the ARMv8-A Architecture Reference Manual (DDI 0487A.j) for more
  * information:
  * Page 1730: 'Input address size', 'For all translation stages'.
+ * [2] See section 12.2.55 in the ARMv8-A Architecture Reference Manual
+ * (DDI 0487D.a)
  */
+/* Maximum value of TCR_ELx.T(0,1)SZ is 39 */
 #define MIN_VIRT_ADDR_SPACE_SIZE	(ULL(1) << (U(64) - TCR_TxSZ_MAX))
+
+/* Maximum value of TCR_ELx.T(0,1)SZ is 48 */
+#define MIN_VIRT_ADDR_SPACE_SIZE_TTST	\
+				(ULL(1) << (U(64) - TCR_TxSZ_MAX_TTST))
 #define MAX_VIRT_ADDR_SPACE_SIZE	(ULL(1) << (U(64) - TCR_TxSZ_MIN))
 
 /*
@@ -58,9 +66,13 @@
  * virtual address space size. For a 4 KB page size,
  * - level 0 supports virtual address spaces of widths 48 to 40 bits;
  * - level 1 from 39 to 31;
- * - level 2 from 30 to 25.
+ * - level 2 from 30 to 22.
+ * - level 3 from 21 to 16.
  *
- * Wider or narrower address spaces are not supported. As a result, level 3
+ * Small Translation Table (Armv8.4-TTST) support allows the starting level
+ * of the translation table from 3 for 4KB granularity. See section 12.2.55 in
+ * the ARMv8-A Architecture Reference Manual (DDI 0487D.a). In Armv8.3 and below
+ * wider or narrower address spaces are not supported. As a result, level 3
  * cannot be used as initial lookup level with 4 KB granularity. See section
  * D4.2.5 in the ARMv8-A Architecture Reference Manual (DDI 0487A.j) for more
  * information.
@@ -71,13 +83,14 @@
  * is 1.
  *
  * Note that this macro assumes that the given virtual address space size is
- * valid. Therefore, the caller is expected to check it is the case using the
- * CHECK_VIRT_ADDR_SPACE_SIZE() macro first.
+ * valid.
  */
 #define GET_XLAT_TABLE_LEVEL_BASE(_virt_addr_space_sz)		\
 	(((_virt_addr_space_sz) > (ULL(1) << L0_XLAT_ADDRESS_SHIFT))	\
 	? 0U								\
-	 : (((_virt_addr_space_sz) > (ULL(1) << L1_XLAT_ADDRESS_SHIFT))	\
-	 ? 1U : 2U))
+	: (((_virt_addr_space_sz) > (ULL(1) << L1_XLAT_ADDRESS_SHIFT))	\
+	? 1U								\
+	: (((_virt_addr_space_sz) > (ULL(1) << L2_XLAT_ADDRESS_SHIFT))	\
+	? 2U : 3U)))
 
 #endif /* XLAT_TABLES_AARCH64_H */
diff --git a/include/lib/xlat_tables/xlat_tables_arch.h b/include/lib/xlat_tables/xlat_tables_arch.h
index 251b020..7237534 100644
--- a/include/lib/xlat_tables/xlat_tables_arch.h
+++ b/include/lib/xlat_tables/xlat_tables_arch.h
@@ -14,18 +14,6 @@
 #endif
 
 /*
- * Evaluates to 1 if the given virtual address space size is valid, or 0 if it's
- * not.
- *
- * A valid size is one that is a power of 2 and is within the architectural
- * limits. Not that these limits are different for AArch32 and AArch64.
- */
-#define CHECK_VIRT_ADDR_SPACE_SIZE(size)			\
-	(((unsigned long long)(size) >= MIN_VIRT_ADDR_SPACE_SIZE) &&	\
-	((unsigned long long)(size) <= MAX_VIRT_ADDR_SPACE_SIZE) &&	\
-	IS_POWER_OF_TWO(size))
-
-/*
  * Evaluates to 1 if the given physical address space size is a power of 2,
  * or 0 if it's not.
  */
diff --git a/include/lib/xlat_tables/xlat_tables_v2.h b/include/lib/xlat_tables/xlat_tables_v2.h
index fa2f9f5..0fe388b 100644
--- a/include/lib/xlat_tables/xlat_tables_v2.h
+++ b/include/lib/xlat_tables/xlat_tables_v2.h
@@ -209,6 +209,17 @@
 void init_xlat_tables_ctx(xlat_ctx_t *ctx);
 
 /*
+ * Fill all fields of a dynamic translation tables context. It must be done
+ * either statically with REGISTER_XLAT_CONTEXT() or at runtime with this
+ * function.
+ */
+void xlat_setup_dynamic_ctx(xlat_ctx_t *ctx, unsigned long long pa_max,
+			    uintptr_t va_max, struct mmap_region *mmap,
+			    unsigned int mmap_num, uint64_t **tables,
+			    unsigned int tables_num, uint64_t *base_table,
+			    int xlat_regime, int *mapped_regions);
+
+/*
  * Add a static region with defined base PA and base VA. This function can only
  * be used before initializing the translation tables. The region cannot be
  * removed afterwards.
diff --git a/include/lib/xlat_tables/xlat_tables_v2_helpers.h b/include/lib/xlat_tables/xlat_tables_v2_helpers.h
index fa89958..aa2bd66 100644
--- a/include/lib/xlat_tables/xlat_tables_v2_helpers.h
+++ b/include/lib/xlat_tables/xlat_tables_v2_helpers.h
@@ -123,9 +123,6 @@
 #define REGISTER_XLAT_CONTEXT_FULL_SPEC(_ctx_name, _mmap_count,		\
 			_xlat_tables_count, _virt_addr_space_size,	\
 			_phy_addr_space_size, _xlat_regime, _section_name)\
-	CASSERT(CHECK_VIRT_ADDR_SPACE_SIZE(_virt_addr_space_size),	\
-		assert_invalid_virtual_addr_space_size_for_##_ctx_name);\
-									\
 	CASSERT(CHECK_PHY_ADDR_SPACE_SIZE(_phy_addr_space_size),	\
 		assert_invalid_physical_addr_space_sizefor_##_ctx_name);\
 									\