SPMD: add support to run BL32 in TDRAM and BL31 in secure DRAM on Arm FVP

This patch reserves and maps the Trusted DRAM for SPM core execution.
It also configures the TrustZone address space controller to run BL31
in secure DRAM.
Signed-off-by: Achin Gupta <achin.gupta@arm.com>
Signed-off-by: Artsem Artsemenka <artsem.artsemenka@arm.com>
Change-Id: I7e1bb3bbc61a0fec6a9cb595964ff553620c21dc

include/plat/arm/common/arm_def.h

@@ -223,6 +223,14 @@
 						ARM_EL3_TZC_DRAM1_SIZE,	\
 						MT_MEMORY | MT_RW | MT_SECURE)
 
+#if defined(SPD_spmd)
+#define ARM_MAP_TRUSTED_DRAM		MAP_REGION_FLAT(		    \
+						PLAT_ARM_TRUSTED_DRAM_BASE, \
+						PLAT_ARM_TRUSTED_DRAM_SIZE, \
+						MT_MEMORY | MT_RW | MT_SECURE)
+#endif
+
+
 /*
  * Mapping for the BL1 RW region. This mapping is needed by BL2 in order to
  * share the Mbed TLS heap. Since the heap is allocated inside BL1, it resides
@@ -471,6 +479,12 @@
 #  define BL32_BASE			(ARM_AP_TZC_DRAM1_BASE + ULL(0x200000))
 #  define BL32_LIMIT			(ARM_AP_TZC_DRAM1_BASE +	\
 						ARM_AP_TZC_DRAM1_SIZE)
+# elif defined(SPD_spmd)
+#  define TSP_SEC_MEM_BASE		(ARM_AP_TZC_DRAM1_BASE + ULL(0x200000))
+#  define TSP_SEC_MEM_SIZE		(ARM_AP_TZC_DRAM1_SIZE - ULL(0x200000))
+#  define BL32_BASE			PLAT_ARM_TRUSTED_DRAM_BASE
+#  define BL32_LIMIT			(PLAT_ARM_TRUSTED_DRAM_BASE	\
+						+ (UL(1) << 21))
 # elif ARM_BL31_IN_DRAM
 #  define TSP_SEC_MEM_BASE		(ARM_AP_TZC_DRAM1_BASE +	\
 						PLAT_ARM_MAX_BL31_SIZE)
@@ -505,12 +519,12 @@
 
 /*
  * BL32 is mandatory in AArch32. In AArch64, undefine BL32_BASE if there is no
- * SPD and no SPM, as they are the only ones that can be used as BL32.
+ * SPD and no SPM-MM, as they are the only ones that can be used as BL32.
  */
 #if defined(__aarch64__) && !JUNO_AARCH32_EL3_RUNTIME
 # if defined(SPD_none) && !SPM_MM
 #  undef BL32_BASE
-# endif /* defined(SPD_none) && !SPM_MM*/
+# endif /* defined(SPD_none) && !SPM_MM */
 #endif /* defined(__aarch64__) && !JUNO_AARCH32_EL3_RUNTIME */
 
 /*******************************************************************************

plat/arm/board/fvp/fvp_common.c

@@ -86,6 +86,9 @@ const mmap_region_t plat_arm_mmap[] = {
 #ifdef __aarch64__
 	ARM_MAP_DRAM2,
 #endif
+#if defined(SPD_spmd)
+	ARM_MAP_TRUSTED_DRAM,
+#endif
 #ifdef SPD_tspd
 	ARM_MAP_TSP_SEC_MEM,
 #endif