feat(hikey960): define a datastore for SPMC_AT_EL3

Kinibi now has 60MB (instead of 64MB).
Increase XLAT tables for BL31

Change-Id: I6843d26198a7d8bdb812e394e4482b1c35afa4c0
Signed-off-by: vallau01 <valentin.laurent@trustonic.com>
Signed-off-by: Lukas Hanel <lukas.hanel@trustonic.com>

plat/hisilicon/hikey960/hikey960_bl31_setup.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2017-2022, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -20,6 +20,7 @@
 #include <drivers/console.h>
 #include <drivers/generic_delay_timer.h>
 #include <lib/mmio.h>
+#include <lib/xlat_tables/xlat_tables_v2.h>
 #include <plat/common/platform.h>
 
 #include <hi3660.h>
@@ -119,6 +120,11 @@ void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
 
 void bl31_plat_arch_setup(void)
 {
+#if SPMC_AT_EL3
+	mmap_add_region(DDR2_SEC_BASE, DDR2_SEC_BASE, DDR2_SEC_SIZE,
+	       MT_MEMORY | MT_RW | MT_SECURE);
+#endif
+
 	hikey960_init_mmu_el3(BL31_BASE,
 			BL31_LIMIT - BL31_BASE,
 			BL_CODE_BASE,
@@ -156,6 +162,28 @@ static void hikey960_iomcu_dma_init(void)
 	}
 }
 
+#if SPMC_AT_EL3
+/*
+ * On the hikey960 platform when using the EL3 SPMC implementation allocate the
+ * datastore for tracking shared memory descriptors in the RAM2 DRAM section
+ * to ensure sufficient storage can be allocated.
+ * Provide an implementation of the accessor method to allow the datastore
+ * details to be retrieved by the SPMC.
+ * The SPMC will take care of initializing the memory region.
+ */
+
+#define SPMC_SHARED_MEMORY_OBJ_SIZE (512 * 1024)
+
+__section("ram2_region") uint8_t plat_spmc_shmem_datastore[SPMC_SHARED_MEMORY_OBJ_SIZE];
+
+int plat_spmc_shmem_datastore_get(uint8_t **datastore, size_t *size)
+{
+	*datastore = plat_spmc_shmem_datastore;
+	*size = SPMC_SHARED_MEMORY_OBJ_SIZE;
+	return 0;
+}
+#endif
+
 void bl31_platform_setup(void)
 {
 	/* Initialize the GIC driver, cpu and distributor interfaces */

plat/hisilicon/hikey960/hikey960_def.h

@@ -24,13 +24,16 @@
  * DDR for TEE (80MB from 0x3E00000-0x43000FFF) is divided into several
  * regions:
  *   - SPMC manifest (4KB at the top) used by SPMC_AT_EL3 and the TEE
- *   - Secure DDR (default is the top 64MB) used by OP-TEE
+ *   - Datastore for SPMC_AT_EL3 (4MB at the top) used by BL31
+ *   - Secure DDR (default is the top 60MB) used by OP-TEE
  *   - Non-secure DDR used by OP-TEE (shared memory and padding) (4MB)
  *   - Secure DDR (4MB aligned on 4MB) for OP-TEE's "Secure Data Path" feature
  *   - Non-secure DDR (8MB) reserved for OP-TEE's future use
  */
-#define DDR_SEC_SIZE			0x04000000 /* reserve 64MB secure memory */
+#define DDR_SEC_SIZE			0x03C00000 /* reserve 60MB secure memory */
 #define DDR_SEC_BASE			0x3F000000
+#define DDR2_SEC_SIZE			0x00400000 /* SPMC_AT_EL3: 4MB for BL31 RAM2 */
+#define DDR2_SEC_BASE			0x42C00000
 #define DDR_SEC_CONFIG_SIZE		0x00001000 /* SPMC_AT_EL3: SPMC manifest */
 #define DDR_SEC_CONFIG_BASE		0x43000000
 

plat/hisilicon/hikey960/include/plat.ld.S

@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2022, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#ifndef PLAT_LD_S
+#define PLAT_LD_S
+
+#include <lib/xlat_tables/xlat_tables_defs.h>
+
+MEMORY {
+    RAM2 (rw): ORIGIN = DDR2_SEC_BASE, LENGTH = DDR2_SEC_SIZE
+}
+
+SECTIONS
+{
+	ram2_region (NOLOAD) : {
+	*(ram2_region)
+	}>RAM2
+}
+
+#endif /* PLAT_LD_S */

plat/hisilicon/hikey960/include/platform_def.h

@@ -121,10 +121,18 @@
 #define MAX_XLAT_TABLES			3
 #endif
 
-#if defined(IMAGE_BL2) || defined(IMAGE_BL31)
+#if defined(IMAGE_BL2)
 #define MAX_XLAT_TABLES			5
 #endif
 
+#if defined(IMAGE_BL31)
+#if defined(SPMC_AT_EL3)
+#define MAX_XLAT_TABLES			17
+#else
+#define MAX_XLAT_TABLES			5
+#endif
+#endif
+
 #define MAX_MMAP_REGIONS		16
 
 /*

plat/hisilicon/hikey960/platform.mk

@@ -164,6 +164,11 @@ FIP_ALIGN			:=	512
 
 # SPM dispatcher
 ifeq (${SPD},spmd)
+ifeq (${SPMC_AT_EL3},1)
+# Add support for platform supplied linker script for BL31 build
+$(eval $(call add_define,PLAT_EXTRA_LD_SCRIPT))
+endif
+
 ifeq ($(PLAT_SP_MANIFEST_DTS),)
         $(error "Error: A SP manifest is required for the SPMC.")
 endif