poplar: Add BL32 (OP-TEE) support

Signed-off-by: Victor Chong <victor.chong@linaro.org>

plat/hisilicon/poplar/aarch64/platform_common.c

@@ -25,9 +25,14 @@
 					DEVICE_SIZE,			\
 					MT_DEVICE | MT_RW | MT_SECURE)
 
+#define MAP_TSP_MEM	MAP_REGION_FLAT(TSP_SEC_MEM_BASE,		\
+					TSP_SEC_MEM_SIZE,		\
+					MT_MEMORY | MT_RW | MT_SECURE)
+
 static const mmap_region_t poplar_mmap[] = {
 	MAP_DDR,
 	MAP_DEVICE,
+	MAP_TSP_MEM,
 	{0}
 };
 

plat/hisilicon/poplar/bl2_plat_setup.c

@@ -29,8 +29,10 @@
 typedef struct bl2_to_bl31_params_mem {
 	bl31_params_t		bl31_params;
 	image_info_t		bl31_image_info;
+	image_info_t		bl32_image_info;
 	image_info_t		bl33_image_info;
 	entry_point_info_t	bl33_ep_info;
+	entry_point_info_t	bl32_ep_info;
 	entry_point_info_t	bl31_ep_info;
 } bl2_to_bl31_params_mem_t;
 
@@ -61,6 +63,16 @@ bl31_params_t *bl2_plat_get_bl31_params(void)
 	SET_PARAM_HEAD(bl2_to_bl31_params->bl31_image_info,
 		       PARAM_IMAGE_BINARY, VERSION_1, 0);
 
+	/* Fill BL3-2 related information if it exists */
+#ifdef BL32_BASE
+	bl2_to_bl31_params->bl32_ep_info = &bl31_params_mem.bl32_ep_info;
+	SET_PARAM_HEAD(bl2_to_bl31_params->bl32_ep_info, PARAM_EP,
+		VERSION_1, 0);
+	bl2_to_bl31_params->bl32_image_info = &bl31_params_mem.bl32_image_info;
+	SET_PARAM_HEAD(bl2_to_bl31_params->bl32_image_info, PARAM_IMAGE_BINARY,
+		VERSION_1, 0);
+#endif
+
 	/* Fill BL3-3 related information */
 	bl2_to_bl31_params->bl33_ep_info = &bl31_params_mem.bl33_ep_info;
 	SET_PARAM_HEAD(bl2_to_bl31_params->bl33_ep_info,
@@ -89,6 +101,41 @@ void bl2_plat_set_bl31_ep_info(image_info_t *image,
 				     DISABLE_ALL_EXCEPTIONS);
 }
 
+/*******************************************************************************
+ * Before calling this function BL32 is loaded in memory and its entrypoint
+ * is set by load_image. This is a placeholder for the platform to change
+ * the entrypoint of BL32 and set SPSR and security state.
+ * On Poplar we only set the security state of the entrypoint
+ ******************************************************************************/
+#ifdef BL32_BASE
+void bl2_plat_set_bl32_ep_info(image_info_t *bl32_image_info,
+					entry_point_info_t *bl32_ep_info)
+{
+	SET_SECURITY_STATE(bl32_ep_info->h.attr, SECURE);
+	/*
+	 * The Secure Payload Dispatcher service is responsible for
+	 * setting the SPSR prior to entry into the BL32 image.
+	 */
+	bl32_ep_info->spsr = 0;
+}
+
+/*******************************************************************************
+ * Populate the extents of memory available for loading BL32
+ ******************************************************************************/
+void bl2_plat_get_bl32_meminfo(meminfo_t *bl32_meminfo)
+{
+	/*
+	 * Populate the extents of memory available for loading BL32.
+	 */
+	bl32_meminfo->total_base = BL32_BASE;
+	bl32_meminfo->free_base = BL32_BASE;
+	bl32_meminfo->total_size =
+			(TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE;
+	bl32_meminfo->free_size =
+			(TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE;
+}
+#endif /* BL32_BASE */
+
 static uint32_t hisi_get_spsr_for_bl33_entry(void)
 {
 	unsigned long el_status;

plat/hisilicon/poplar/bl31_plat_setup.c

@@ -34,6 +34,7 @@
 
 #define TZPC_SEC_ATTR_CTRL_VALUE (0x9DB98D45)
 
+static entry_point_info_t bl32_image_ep_info;
 static entry_point_info_t bl33_image_ep_info;
 
 static void hisi_tzpc_sec_init(void)
@@ -43,7 +44,19 @@ static void hisi_tzpc_sec_init(void)
 
 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
 {
-	return &bl33_image_ep_info;
+	entry_point_info_t *next_image_info;
+
+	assert(sec_state_is_valid(type));
+	next_image_info = (type == NON_SECURE)
+			? &bl33_image_ep_info : &bl32_image_ep_info;
+	/*
+	 * None of the images on the ARM development platforms can have 0x0
+	 * as the entrypoint
+	 */
+	if (next_image_info->pc)
+		return next_image_info;
+	else
+		return NULL;
 }
 
 void bl31_early_platform_setup(bl31_params_t *from_bl2,
@@ -54,6 +67,13 @@ void bl31_early_platform_setup(bl31_params_t *from_bl2,
 	/* Init console for crash report */
 	plat_crash_console_init();
 
+
+	/*
+	 * Copy BL32 (if populated by BL2) and BL33 entry point information.
+	 * They are stored in Secure RAM, in BL2's address space.
+	 */
+	if (from_bl2->bl32_ep_info)
+		bl32_image_ep_info = *from_bl2->bl32_ep_info;
 	bl33_image_ep_info = *from_bl2->bl33_ep_info;
 }
 

plat/hisilicon/poplar/include/platform_def.h

@@ -48,10 +48,54 @@
 #define TEE_SEC_MEM_BASE		(0x70000000)
 #define TEE_SEC_MEM_SIZE		(0x10000000)
 
+/* Memory location options for TSP */
+#define POPLAR_SRAM_ID	0
+#define POPLAR_DRAM_ID	1
+
+/*
+ * DDR for OP-TEE (28MB from 0x02200000 -0x04000000) is divided in several
+ * regions:
+ *   - Secure DDR (default is the top 16MB) used by OP-TEE
+ *   - Non-secure DDR (4MB) reserved for OP-TEE's future use
+ *   - Secure DDR (4MB aligned on 4MB) for OP-TEE's "Secure Data Path" feature
+ *   - Non-secure DDR used by OP-TEE (shared memory and padding) (4MB)
+ *   - Non-secure DDR (2MB) reserved for OP-TEE's future use
+ */
+#define DDR_SEC_SIZE			0x01000000
+#define DDR_SEC_BASE			0x03000000
+
 #define BL_MEM_BASE			(BL1_RO_BASE)
 #define BL_MEM_LIMIT			(BL31_LIMIT)
 #define BL_MEM_SIZE			(BL_MEM_LIMIT - BL_MEM_BASE)
 
+/*
+ * BL3-2 specific defines.
+ */
+
+/*
+ * The TSP currently executes from TZC secured area of DRAM.
+ */
+#define BL32_DRAM_BASE			0x03000000
+#define BL32_DRAM_LIMIT			0x04000000
+
+#if (POPLAR_TSP_RAM_LOCATION_ID == POPLAR_DRAM_ID)
+#define TSP_SEC_MEM_BASE		BL32_DRAM_BASE
+#define TSP_SEC_MEM_SIZE		(BL32_DRAM_LIMIT - BL32_DRAM_BASE)
+#define BL32_BASE			BL32_DRAM_BASE
+#define BL32_LIMIT			BL32_DRAM_LIMIT
+#elif (POPLAR_TSP_RAM_LOCATION_ID == POPLAR_SRAM_ID)
+#error "SRAM storage of TSP payload is currently unsupported"
+#else
+#error "Currently unsupported POPLAR_TSP_LOCATION_ID value"
+#endif
+
+/* BL32 is mandatory in AArch32 */
+#ifndef AARCH32
+#ifdef SPD_none
+#undef BL32_BASE
+#endif /* SPD_none */
+#endif
+
 #define PLAT_POPLAR_NS_IMAGE_OFFSET	0x37000000
 
 /* Page table and MMU setup constants */

plat/hisilicon/poplar/include/poplar_layout.h

@@ -74,9 +74,9 @@
  * "OFFSET" is an offset to the start of a region relative to the
  * base of the "l-loader" TEXT section (also a multiple of page size).
  */
-#define LLOADER_TEXT_BASE		0x00001000	/* page aligned */
+#define LLOADER_TEXT_BASE		0x02001000	/* page aligned */
 #define BL1_OFFSET			0x0000D000	/* page multiple */
-#define FIP_BASE			0x00040000
+#define FIP_BASE			0x02040000
 
 #define BL1_RO_SIZE			0x00008000	/* page multiple */
 #define BL1_RW_SIZE			0x00008000	/* page multiple */

plat/hisilicon/poplar/plat_storage.c

@@ -43,6 +43,10 @@ static const io_uuid_spec_t bl31_uuid_spec = {
 	.uuid = UUID_EL3_RUNTIME_FIRMWARE_BL31,
 };
 
+static const io_uuid_spec_t bl32_uuid_spec = {
+	.uuid = UUID_SECURE_PAYLOAD_BL32,
+};
+
 static const io_uuid_spec_t bl33_uuid_spec = {
 	.uuid = UUID_NON_TRUSTED_FIRMWARE_BL33,
 };
@@ -69,6 +73,11 @@ static const struct plat_io_policy policies[] = {
 		(uintptr_t)&bl31_uuid_spec,
 		open_fip
 	},
+	[BL32_IMAGE_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl32_uuid_spec,
+		open_fip
+	},
 	[BL33_IMAGE_ID] = {
 		&fip_dev_handle,
 		(uintptr_t)&bl33_uuid_spec,

plat/hisilicon/poplar/platform.mk

@@ -4,6 +4,17 @@
 # SPDX-License-Identifier: BSD-3-Clause
 #
 
+# On Poplar, the TSP can execute from TZC secure area in DRAM.
+POPLAR_TSP_RAM_LOCATION	:=	dram
+ifeq (${POPLAR_TSP_RAM_LOCATION}, dram)
+  POPLAR_TSP_RAM_LOCATION_ID = POPLAR_DRAM_ID
+else ifeq (${HIKEY960_TSP_RAM_LOCATION}, sram)
+  POPLAR_TSP_RAM_LOCATION_ID := POPLAR_SRAM_ID
+else
+  $(error "Currently unsupported POPLAR_TSP_RAM_LOCATION value")
+endif
+$(eval $(call add_define,POPLAR_TSP_RAM_LOCATION_ID))
+
 NEED_BL33			:= yes
 
 COLD_BOOT_SINGLE_CPU		:= 1